v0.27.6

Signed-off-by: MiaoWoo <admin@yumc.pw>

.gitignore

@@ -1,3 +1,4 @@
+.yarn*
 .vscode
 .theia
 node_modules

lerna.json

@@ -1,16 +1,16 @@
 {
-    "version": "0.24.0",
-    "useWorkspaces": true,
-    "npmClient": "yarn",
-    "packages": [
-        "packages/*"
-    ],
-    "command": {
-        "run": {
-            "stream": true
-        }
-    },
-    "publishConfig": {
-        "access": "public"
+  "version": "0.27.6",
+  "useWorkspaces": true,
+  "npmClient": "yarn",
+  "packages": [
+    "packages/*"
+  ],
+  "command": {
+    "run": {
+      "stream": true
     }
+  },
+  "publishConfig": {
+    "access": "public"
+  }
 }

package.json

@@ -12,14 +12,16 @@
         "build": "lerna run build",
         "ug": "yarn upgrade-interactive --latest",
         "np": "./script/push.sh",
-        "lsp": "npm login --registry=https://registry.npmjs.org --scope=@ccms",
-        "lp": "lerna publish --registry https://registry.npmjs.org",
-        "lpb": "lerna publish --registry https://registry.npmjs.org --canary --preid beta --pre-dist-tag beta"
+        "lsp": "npm login -scope=@ccms",
+        "lp": "lerna publish --verify-access --force-publish",
+        "lpb": "lerna publish --preid beta --dist-tag beta --verify-access --force-publish",
+        "lpc": "lerna publish --canary --preid beta --pre-dist-tag beta --verify-access --force-publish",
+        "lpf": "lerna publish from-package --yes"
     },
     "workspaces": [
         "packages/*"
     ],
     "devDependencies": {
-        "lerna": "^4.0.0"
+        "lerna": "^6.4.1"
     }
 }

packages/amqp/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/amqp",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript amqp package",
     "keywords": [
         "miaoscript",
@@ -19,17 +19,17 @@
         "test": "echo \"Error: run tests from root\" && exit 1"
     },
     "dependencies": {
-        "@ccms/api": "^0.24.0",
-        "@ccms/common": "^0.24.0",
-        "@ccms/container": "^0.24.0"
+        "@ccms/api": "^0.27.6",
+        "@ccms/common": "^0.27.6",
+        "@ccms/container": "^0.27.6"
     },
     "devDependencies": {
-        "@ccms/nashorn": "^0.24.0",
+        "@ccms/nashorn": "^0.27.6",
         "@javatypes/amqp-client": "^0.0.3",
         "@javatypes/spring-amqp": "^0.0.3",
         "@javatypes/spring-rabbit": "^0.0.3",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     }
 }

packages/api/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/api",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript api package",
     "keywords": [
         "miaoscript",
@@ -19,16 +19,16 @@
         "test": "echo \"Error: run tests from root\" && exit 1"
     },
     "dependencies": {
-        "@ccms/common": "^0.24.0",
-        "@ccms/container": "^0.24.0",
-        "@ccms/polyfill": "^0.24.0",
+        "@ccms/common": "^0.27.6",
+        "@ccms/container": "^0.27.6",
+        "@ccms/polyfill": "^0.27.6",
         "base64-js": "^1.5.1",
         "source-map-builder": "^0.0.7"
     },
     "devDependencies": {
         "@types/base64-js": "^1.3.0",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     }
 }

packages/api/src/console.ts

@@ -44,13 +44,13 @@ export namespace jsconsole {
                             let file = Paths.get(Paths.get(fileName, '..', sourceMappingURL).toFile().getCanonicalPath()).toFile()
                             if (file.exists()) {
                                 sourceContent = base.read(file)
+                                sourceFileMaps[fileName] = file.getCanonicalPath()
                             } else if (global.debug) {
                                 console.debug('readSourceMap can\'t found', fileName, 'source map file', sourceMappingURL)
                             }
                         }
                         if (sourceContent) {
                             sourceMaps[fileName] = new SourceMapBuilder(JSON.parse(sourceContent))
-                            sourceFileMaps[fileName] = Paths.get(fileName, '..', sourceMaps[fileName].sources[0]).toFile().getCanonicalPath()
                         }
                     }
                 }
@@ -88,9 +88,9 @@ export namespace jsconsole {
                 let { fileName, lineNumber } = readSourceMap(trace.fileName, trace.lineNumber)
                 if (fileName.startsWith(root)) { fileName = fileName.split(root)[1] }
                 if (color) {
-                    cache.push(`    §e->§c ${fileName}:${lineNumber} => §4${trace.methodName}`)
+                    cache.push(`    §e->§c ${fileName}:${lineNumber}(${trace.lineNumber}) => §4${trace.methodName}`)
                 } else {
-                    cache.push(`    -> ${fileName}:${lineNumber} => ${trace.methodName}`)
+                    cache.push(`    -> ${fileName}:${lineNumber}(${trace.lineNumber}) => ${trace.methodName}`)
                 }
             } else {
                 let className = trace.className

packages/api/src/database.ts

@@ -30,6 +30,10 @@ export namespace database {
          * 链接属性
          */
         properties?: { [key: string]: any }
+        /**
+         * 调试模式
+         */
+        debug?: boolean
     }
 
     @injectable()

packages/api/src/event.ts

@@ -26,6 +26,7 @@ export namespace event {
 
         private mapEvent = [];
         private listenerMap = [];
+        private cacheSlowEventKey = {};
 
         protected baseEventDir = '';
 
@@ -92,17 +93,23 @@ export namespace event {
             return eventCls
         }
 
-        execute(name, exec, eventCls) {
+        /**
+         * 创建命令执行器
+         * @param name 插件名称
+         * @param exec 执行方法
+         * @param eventCls 事件类
+         * @returns
+         */
+        createExecute(name, exec, eventCls) {
             return (...args: any[]) => {
+                let event = args[args.length - 1]
                 try {
-                    let event = args[args.length - 1]
-                    if (eventCls.isAssignableFrom(event.getClass())) {
-                        let time = Date.now()
-                        exec(event)
-                        let cost = Date.now() - time
-                        if (cost > global.ScriptSlowExecuteTime) {
-                            console.i18n("ms.api.event.execute.slow", { name, event: this.class2Name(eventCls), cost })
-                        }
+                    if (!eventCls.isAssignableFrom(event.getClass())) { return }
+                    let time = Date.now(); exec(event); let cost = Date.now() - time
+                    if (cost > global.ScriptSlowExecuteTime && !event.async) {
+                        let eventKey = `${name}-${this.class2Name(eventCls)}`
+                        if (!this.cacheSlowEventKey[eventKey]) { return this.cacheSlowEventKey[eventKey] = cost }
+                        console.i18n("ms.api.event.execute.slow", { name, event: this.class2Name(eventCls), cost })
                     }
                 } catch (ex: any) {
                     console.i18n("ms.api.event.execute.error", { name, event: this.class2Name(eventCls), ex })
@@ -113,11 +120,11 @@ export namespace event {
 
         /**
         * 添加事件监听
-        * @param plugin {any}
-        * @param event {string}
-        * @param exec {function}
-        * @param priority {string} [LOWEST,LOW,NORMAL,HIGH,HIGHEST,MONITOR]
-        * @param ignoreCancel
+        * @param plugin {any} 插件
+        * @param event {string} 事件名称
+        * @param exec {function} 事件执行器
+        * @param priority {string} [LOWEST,LOW,NORMAL,HIGH,HIGHEST,MONITOR] 优先级
+        * @param ignoreCancel 是否忽略已取消事件
         */
         listen(plugin: any, event: string, exec: (event: any) => void, priority: EventPriority = EventPriority.NORMAL, ignoreCancel = false) {
             if (!plugin || !plugin.description || !plugin.description.name) throw new TypeError(i18n.translate("ms.api.event.listen.plugin.name.empty"))
@@ -135,7 +142,7 @@ export namespace event {
             // noinspection JSUnusedGlobalSymbols
             var listener = this.register(
                 eventCls,
-                this.execute(name, exec, eventCls),
+                this.createExecute(name, exec, eventCls),
                 priority,
                 ignoreCancel
             )
@@ -171,7 +178,7 @@ export namespace event {
         disable(plugin: any) {
             var eventCache = this.listenerMap[plugin.description.name]
             if (eventCache) {
-                eventCache.forEach(off => off())
+                eventCache.forEach((off: () => any) => off())
                 delete this.listenerMap[plugin.description.name]
             }
         }

packages/api/src/item.ts

@@ -5,7 +5,7 @@ export namespace item {
     export abstract class Item {
         abstract builder(): ItemBuilder
         abstract toJson(item: any): string
-        abstract fromJSON(json: string): any
+        abstract fromJson(json: string): any
     }
     export interface ItemBuilder {
         from(item: any): ItemBuilder

packages/api/src/particle.ts

@@ -6,6 +6,11 @@ const UUID = Java.type('java.util.UUID')
 const Math = Java.type('java.lang.Math')
 
 export namespace particle {
+    @injectable()
+    export abstract class ParticleSpawner {
+        abstract spawn(location: any, particle: Particle)
+        abstract spawnToPlayer(player: any, location: any, particle: Particle)
+    }
     /**
      * 表示一个特效对象
      *
@@ -23,6 +28,11 @@ export namespace particle {
         private extra: number = 0;
         private data: Object = null;
 
+        /**
+         * Only Show To Player
+         */
+        private player: any
+
         constructor() {
             this.uuid = UUID.randomUUID().toString()
         }
@@ -105,6 +115,15 @@ export namespace particle {
             return this
         }
 
+        getPlayer() {
+            return this.player
+        }
+
+        setPlayer(player) {
+            this.player = player
+            return this
+        }
+
         /**
          * 通过给定一个坐标就可以使用已经指定的参数来播放粒子
          *
@@ -112,9 +131,14 @@ export namespace particle {
          */
         spawn(location: any) {
             if (!this.spawner) throw new Error(`particle ${this.uuid} not set spawner can't spawn!`)
-            this.spawner.spawn(location, this)
+            if (this.player) {
+                this.spawner.spawnToPlayer(this.player, location, this)
+            } else {
+                this.spawner.spawn(location, this)
+            }
         }
     }
+
     /**
      * 表示一条线
      *
@@ -158,8 +182,7 @@ export namespace particle {
 
         show() {
             for (let i = 0; i < this.length; i += this.step) {
-                let vectorTemp = this.vector.clone().multiply(i)
-                this.spawn(this.start.clone().add(vectorTemp))
+                this.spawn(this.start.clone().add(this.vector.clone().multiply(i)))
             }
         }
 
@@ -234,15 +257,6 @@ export namespace particle {
             this.length = this.vector.length()
             this.vector.normalize()
         }
-
-        public static buildLine(locA: any, locB: any, step: number, particle: any) {
-            let vectorAB = locB.clone().subtract(locA).toVector()
-            let vectorLength = vectorAB.length()
-            vectorAB.normalize()
-            for (let i = 0; i < vectorLength; i += step) {
-                ParticleManager.globalSpawner.spawn(locA.clone().add(vectorAB.clone().multiply(i)), particle)
-            }
-        }
     }
     /**
      * 表示一个弧
@@ -331,9 +345,10 @@ export namespace particle {
 
     @injectable()
     export abstract class ParticleManager {
-        public static globalSpawner: ParticleSpawner = undefined
         @Autowired()
         private taskManager: task.TaskManager
+        @Autowired()
+        private particleSpawner: particle.ParticleSpawner
 
         protected taskId: java.util.concurrent.atomic.AtomicInteger
         protected cacheTasks = new Map<string, ParticleTask>()
@@ -354,6 +369,10 @@ export namespace particle {
             return this.taskManager
         }
 
+        public getParticleSpawner() {
+            return this.particleSpawner
+        }
+
         public create(particle: Particle, plugin?: plugin.Plugin) {
             let uuid = particle.getUUID()
             if (this.cacheTasks.has(uuid)) {
@@ -389,14 +408,12 @@ export namespace particle {
             }
         }
         protected create0(owner: plugin.Plugin, particle: Particle): ParticleTask {
-            particle.setSpawner(this.getGlobalSpawner())
+            particle.setSpawner(this.getParticleSpawner())
             return new ParticleTask(owner, particle, this)
         }
-        protected abstract getGlobalSpawner(): ParticleSpawner
     }
 
     export class ParticleTask {
-
         private particle: Particle
         private isAsync: boolean = false
         private interval: number = 0
@@ -486,9 +503,4 @@ export namespace particle {
             }
         }
     }
-
-    export abstract class ParticleSpawner {
-        abstract spawnParticle(location: any, particle: any, count: number)
-        abstract spawn(location: any, particle: Particle)
-    }
 }

packages/api/src/server.ts

@@ -29,6 +29,7 @@ export namespace server {
         origin: any
         [key: string]: any
     }
+
     @injectable()
     export abstract class NativePluginManager {
         list(): NativePlugin[] {
@@ -53,6 +54,7 @@ export namespace server {
             throw new Error("Method not implemented.")
         }
     }
+
     /**
      * MiaoScript Server
      */
@@ -98,6 +100,7 @@ export namespace server {
             throw new Error("Method not implemented.")
         }
     }
+
     @injectable()
     export class ServerChecker {
         @Autowired(ServerType)
@@ -116,6 +119,22 @@ export namespace server {
             }
         }
     }
+
+    @injectable()
+    export class NativePluginChecker {
+        @Autowired(NativePluginManager)
+        private nativePluginManager: NativePluginManager
+
+        check(plugins: string[]) {
+            // Not set plugins -> allow
+            if (!plugins || !plugins.length) return true
+            for (const plugin of plugins) {
+                if (!this.nativePluginManager.has(plugin)) { return false }
+            }
+            return true
+        }
+    }
+
     @injectable()
     export abstract class ReflectServer extends server.Server {
         @Autowired(ContainerInstance)
@@ -185,15 +204,25 @@ export namespace server {
                     }
                 }
             }
+            if (this.rootLogger.class.name.indexOf('slf4j') !== -1) {
+                try {
+                    let LogManager = Java.type('org.apache.logging.log4j.LogManager')
+                    this.rootLogger = LogManager.getLogger('ROOT')
+                } catch (error: any) {
+                    if (global.debug) {
+                        console.ex(error)
+                    }
+                }
+            }
             if (this.rootLogger && this.rootLogger.class.name.indexOf('Logger') === -1) {
                 console.error('Error Logger Class: ' + this.rootLogger.class.name)
                 this.rootLogger = undefined
             }
+            if (!this.rootLogger) { console.error("Can't found rootLogger!") }
             // get root logger
             for (let index = 0; index < 5 && this.rootLogger.parent; index++) {
                 this.rootLogger = this.rootLogger.parent
             }
-            if (!this.rootLogger) { console.error("Can't found rootLogger!") }
             this.container.bind(constants.ServiceIdentifier.RootLogger).toConstantValue(this.rootLogger)
         }
     }

packages/bukkit/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/bukkit",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript bukkit package",
     "keywords": [
         "miaoscript",
@@ -21,12 +21,12 @@
     "devDependencies": {
         "@javatypes/spigot-api": "^0.0.3",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "dependencies": {
-        "@ccms/api": "^0.24.0",
-        "@ccms/common": "^0.24.0",
-        "@ccms/container": "^0.24.0"
+        "@ccms/api": "^0.27.6",
+        "@ccms/common": "^0.27.6",
+        "@ccms/container": "^0.27.6"
     }
 }

packages/bukkit/src/internal/chat.ts

@@ -161,16 +161,17 @@ class BukkitChatInvoke_1_17_1 extends BukkitChatInvoke_1_16_5 {
         return base.getClass('net.minecraft.network.protocol.Packet')
     }
 }
-
-class BukkitChatInvoke_1_19 extends BukkitChatInvoke_1_17_1 {
+class BukkitChatInvoke_1_18_2 extends BukkitChatInvoke_1_17_1 {
     getSendPacketMethodName(playerConnectionClass: any) {
         return playerConnectionClass.getMethod('a', this.getPacketClass()).getName()
     }
+}
+class BukkitChatInvoke_1_19 extends BukkitChatInvoke_1_18_2 {
     getPacketPlayOutChatClass() {
         return base.getClass('net.minecraft.network.protocol.game.ClientboundSystemChatPacket')
     }
     getPacketPlayOutChat(sender: any, json: any, type: number) {
-        return new this.PacketPlayOutChat(this.ChatSerializer[this.nmsChatSerializerMethodName](json), type == 0 ? 1 : type)
+        return new this.PacketPlayOutChat(this.ChatSerializer[this.nmsChatSerializerMethodName](json), type)
     }
 }
 
@@ -181,6 +182,8 @@ try {
     let nmsSubVersion = nmsVersion.split("_")[1]
     if (nmsSubVersion >= 19) {
         bukkitChatInvoke = new BukkitChatInvoke_1_19(nmsVersion)
+    } else if (nmsSubVersion >= 18) {
+        bukkitChatInvoke = new BukkitChatInvoke_1_18_2(nmsVersion)
     } else if (nmsSubVersion >= 17) {
         bukkitChatInvoke = new BukkitChatInvoke_1_17_1(nmsVersion)
     } else if (nmsSubVersion >= 16) {

packages/bukkit/src/item.ts

@@ -12,6 +12,7 @@ export class BukkitItem extends item.Item {
     private NBTTagCompound: any
     private nmsSaveNBTMethodName: any
     private MojangsonParser: any
+    private nmsItemStack: any
     private mpParseMethodName: any
     private nmsVersion: any
     constructor() {
@@ -25,8 +26,8 @@ export class BukkitItem extends item.Item {
         let nbt = new this.NBTTagCompound()
         return this.CraftItemStack.asNMSCopy(item)[this.nmsSaveNBTMethodName](nbt).toString()
     }
-    fromJSON(json: string) {
-        return this.CraftItemStack.asBukkitCopy(this.MojangsonParser[this.mpParseMethodName](json))
+    fromJson(json: string) {
+        return this.CraftItemStack.asBukkitCopy(new this.nmsItemStack(this.MojangsonParser[this.mpParseMethodName](json)))
     }
     private obcCls(name: string) {
         return base.getClass(['org.bukkit.craftbukkit', this.nmsVersion, name].join('.'))
@@ -44,6 +45,7 @@ export class BukkitItem extends item.Item {
             // @ts-ignore
             let asNMSCopyMethod = CraftItemStackClass.getMethod('asNMSCopy', ItemStack.class)
             let nmsItemStackClass = asNMSCopyMethod.getReturnType()
+            this.nmsItemStack = Java.type(nmsItemStackClass.getName())
             let nmsNBTTagCompoundClass = undefined
             for (let method of Java.from(nmsItemStackClass.getMethods())) {
                 let rt = method.getReturnType()
@@ -61,7 +63,7 @@ export class BukkitItem extends item.Item {
                 }
             }
             try {
-                this.MojangsonParser = this.nmsCls('MojangsonParser')
+                this.MojangsonParser = this.nmsCls('MojangsonParser').static
             } catch (error) {
                 this.MojangsonParser = Java.type('net.minecraft.nbt.MojangsonParser')
             }

packages/bukkit/src/particle.ts

@@ -3,20 +3,11 @@ import { particle } from '@ccms/api'
 
 @provideSingleton(particle.ParticleManager)
 export class BukkitParticleManager extends particle.ParticleManager {
-    private globalSpawner = new BukkitParticleSpawner()
-    constructor() {
-        super()
-        particle.ParticleManager.globalSpawner = this.globalSpawner
-    }
-    protected getGlobalSpawner() {
-        return this.globalSpawner
-    }
 }
+
+@provideSingleton(particle.ParticleSpawner)
 export class BukkitParticleSpawner extends particle.ParticleSpawner {
-    spawnParticle(location: any, particle: any, count: number = 1) {
-        location.getWorld().spawnParticle(particle, location, count)
-    }
-    spawn(location: any, particle: particle.Particle) {
+    spawn(location: org.bukkit.Location, particle: particle.Particle) {
         location.getWorld().spawnParticle(
             particle.getParticle(),
             location,
@@ -28,4 +19,15 @@ export class BukkitParticleSpawner extends particle.ParticleSpawner {
             particle.getData()
         )
     }
+    spawnToPlayer(player: org.bukkit.entity.Player, location: org.bukkit.Location, particle: particle.Particle) {
+        player.spawnParticle(
+            particle.getParticle(),
+            location,
+            particle.getCount(),
+            particle.getOffsetX(),
+            particle.getOffsetY(),
+            particle.getOffsetZ(),
+            particle.getExtra(),
+            particle.getData())
+    }
 }

packages/bungee/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/bungee",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript bungee package",
     "keywords": [
         "miaoscript",
@@ -21,12 +21,12 @@
     "devDependencies": {
         "@javatypes/bungee-api": "^0.0.3",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "dependencies": {
-        "@ccms/api": "^0.24.0",
-        "@ccms/common": "^0.24.0",
-        "@ccms/container": "^0.24.0"
+        "@ccms/api": "^0.27.6",
+        "@ccms/common": "^0.27.6",
+        "@ccms/container": "^0.27.6"
     }
 }

packages/client/.gitignore

@@ -1 +0,0 @@
-src/emp.ts

packages/client/package.json

@@ -1,37 +0,0 @@
-{
-    "private": true,
-    "name": "@ccms/client",
-    "version": "0.24.0",
-    "description": "MiaoScript client package",
-    "keywords": [
-        "miaoscript",
-        "minecraft",
-        "bukkit",
-        "sponge"
-    ],
-    "author": "MiaoWoo <admin@yumc.pw>",
-    "homepage": "https://github.com/circlecloud/ms.git",
-    "license": "ISC",
-    "main": "dist/index.js",
-    "scripts": {
-        "dev": "ts-node-dev --respawn --debounce=1500 src/index.ts",
-        "clean": "rimraf dist",
-        "watch": "tsc --watch",
-        "build": "yarn clean && tsc",
-        "start": "node dist/index.js",
-        "debug": "DEBUG=minecraft-protocol node dist/index.js",
-        "emp": "node dist/emp.js",
-        "test": "echo \"Error: run tests from root\" && exit 1"
-    },
-    "dependencies": {
-        "axios": "^0.27.2",
-        "minecraft-protocol": "^1.34.0",
-        "minecraft-protocol-forge": "^1.0.0",
-        "proxy-agent": "^5.0.0"
-    },
-    "devDependencies": {
-        "@types/node": "^17.0.25",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
-    }
-}

packages/client/src/color.ts

@@ -1,101 +0,0 @@
-class MessagePart {
-    text: string
-    color: string
-    clickEvent: MessagePartEvent
-    hoverEvent: MessagePartEvent
-    translate: string
-    with: MessagePart[]
-    extra: MessagePart[]
-}
-
-class MessagePartEvent {
-    action: string
-    value: string
-}
-
-var colorMap = []
-colorMap['0'] = '38;5;0'
-colorMap['1'] = '38;5;4'
-colorMap['2'] = '38;5;2'
-colorMap['3'] = '38;5;6'
-colorMap['4'] = '38;5;1'
-colorMap['5'] = '38;5;5'
-colorMap['6'] = '38;5;3'
-colorMap['7'] = '38;5;7'
-colorMap['8'] = '38;5;8'
-colorMap['9'] = '38;5;12'
-colorMap['a'] = '38;5;10'
-colorMap['b'] = '38;5;14'
-colorMap['c'] = '38;5;9'
-colorMap['d'] = '38;5;13'
-colorMap['e'] = '38;5;11'
-colorMap['f'] = '38;5;15'
-colorMap['r'] = '0'
-colorMap['l'] = '1'
-colorMap['n'] = '4'
-var regexMap = []
-for (const c in colorMap) {
-    regexMap[colorMap[c]] = new RegExp(`§${c}`, "g")
-}
-function mcColor2ANSI(str) {
-    for (const regex in regexMap) {
-        str = str.replace(regexMap[regex], `\u001b[${regex}m`)
-    }
-    return str;
-}
-
-let jsonColorMap = {
-    "black": '0',
-    "dark_blue": '1',
-    "dark_green": '2',
-    "dark_aqua": '3',
-    "dark_red": '4',
-    "dark_purple": '5',
-    "gold": '6',
-    "gray": '7',
-    "dark_gray": '8',
-    "blue": '9',
-    "green": 'a',
-    "aqua": 'b',
-    "red": 'c',
-    "light_purple": 'd',
-    "yellow": 'e',
-    "white": 'f',
-    "obfuscated": 'k',
-    "bold": 'l',
-    "strikethrough": 'm',
-    "underline": 'n',
-    "italic": 'o',
-    "reset": 'r',
-};
-
-function json2text(json: MessagePart): string {
-    let temp = "";
-    if (json.color) {
-        temp += `§${jsonColorMap[json.color]}`
-    }
-    temp += json.text || json.translate || ''
-    if (json.extra) {
-        json.extra.forEach((ext) => {
-            temp += json2text(ext)
-        })
-    }
-    return temp += '§r'
-}
-
-function $(input: any) {
-    if (typeof input === "string") {
-        input = JSON.parse(input)
-    }
-    input = json2text(input) + '§r'
-    if (input.startsWith('§卐')) {
-        input = input.substring(2)
-    }
-    return mcColor2ANSI(input)
-}
-
-export {
-    json2text,
-    mcColor2ANSI,
-    $
-}

packages/client/src/event.ts

@@ -1,33 +0,0 @@
-import { $ } from './color'
-
-export function attachEvents(client) {
-    client.on('chat', (packet) => {
-        // Listen for chat messages and echo them back.
-        var jsonMsg = JSON.parse(packet.message)
-        console.log($(jsonMsg))
-    })
-    client.on('state', (newState, oldState) => {
-        console.log('Client Change State', oldState, 'to', newState)
-        let targetServer = process.argv[6]
-        if (newState == "play" && targetServer) {
-            setTimeout(() => {
-                client.write('chat', {
-                    message: '/server ' + targetServer
-                })
-            }, 3000)
-        }
-    })
-    client.on('update_health', (packet) => {
-        if (packet.health <= 0) {
-            console.log("Player Dead Auto Respawn...")
-            client.write('client_command', { payload: 0 })
-        } else if (packet.health > 0) {
-        }
-    })
-    client.on('kick_disconnect', (packet) => {
-        console.log($(packet.reason))
-    })
-    client.on('disconnect', (packet) => {
-        console.log($(packet.reason))
-    })
-}

packages/client/src/forge.ts

@@ -1,14 +0,0 @@
-export function attachForge(client) {
-    client.on('custom_payload', function(packet) {
-        if (packet.channel === 'FML|HS') {
-            client.write('custom_payload', {
-                channel: 'FML|HS',
-                data: Buffer.of(0x01, 0x02)
-            });
-            client.write('custom_payload', {
-                channel: 'FML|HS',
-                data: Buffer.of(0x02, 0x00)
-            });
-        }
-    });
-}

packages/client/src/index.ts

@@ -1,124 +0,0 @@
-import { createInterface } from 'readline'
-import { Client, createClient } from 'minecraft-protocol'
-
-import { attachForge } from './forge'
-import { attachEvents } from './event'
-
-let readUserInfo = process.argv[2] || 'Mr_jtb'
-let realUserInfo = readUserInfo.split(":")
-let username = realUserInfo[0]
-let password = realUserInfo[1] || ''
-let version = process.argv[3] || '1.12.2'
-let readAddress = process.argv[4] || '192.168.2.25:25565'
-let realAddress = readAddress.split(":")
-let address = realAddress[0]
-let port = parseInt(realAddress[1] || "25565")
-let client = commandLineCreateClient()
-
-function commandLineCreateClient() {
-    return createConnection(address, port, username, password)
-}
-
-function createConnection(host: string, port: number, username: string, password: string) {
-    let clientOptions: any = {
-        version,
-        host,
-        port,
-        username,
-        password,
-        // clientToken: 'd02c7f39-2376-45da-a5a5-50e24fa8b185',
-        //@ts-ignore
-        // authServer: 'https://skin.yumc.pw/api/yggdrasil/authserver',
-        // sessionServer: 'https://skin.yumc.pw/api/yggdrasil/sessionserver'
-    }
-    if (clientOptions.password) {
-        clientOptions.clientToken = 'd02c7f39-2376-45da-a5a5-50e24fa8b185'
-        clientOptions.authServer = 'https://skin.yumc.pw/api/yggdrasil/authserver'
-        clientOptions.sessionServer = 'https://skin.yumc.pw/api/yggdrasil/sessionserver'
-    }
-    let client = createClient(clientOptions)
-
-    attachCommon(client)
-    attachForge(client)
-    attachEvents(client)
-    return client
-}
-
-function attachCommon(client: Client) {
-    client.on('login', () => {
-        // client.registerChannel('updater', ['string', []])
-        // client.registerChannel('updater-enabled', ['string', []])
-        // client.registerChannel('dragoncore', ['string', []])
-        // client.registerChannel('dragoncore:main', ['string', []])
-        client.on('REGISTER', (array) => {
-            for (const channel of array) {
-                client.on('channel', console.log)
-            }
-        })
-        // client.on('dragoncore:main', (data) => {
-        //     console.log(data)
-        // })
-    })
-    client.on('custom_payload', (data) => {
-        console.log('custom_payload' + JSON.stringify(data))
-    })
-    client.on('error', (error) => {
-        console.log("Client Error", error)
-    })
-    client.on('end', (resone) => {
-        console.log("Client End Resone:", resone)
-        if (`${resone}` != "SocketClosed") {
-            setTimeout(() => {
-                client = commandLineCreateClient()
-            }, 500)
-        } else {
-            process.exit(0)
-        }
-    })
-}
-
-const rl = createInterface({
-    input: process.stdin,
-    output: process.stdout,
-    completer: (line, func) => {
-        let args = line.split(' ')
-        let comp = args[args.length - 1]
-        client.once('tab_complete', (msg) => {
-            let mcts = msg.matches.filter(s => s)
-            func(null, [mcts, comp])
-        })
-        client.write('tab_complete', {
-            text: line
-        })
-    },
-    terminal: true,
-    prompt: ''
-})
-
-rl.on('line', function (line) {
-    switch (line) {
-        case "":
-            break
-        case "eval":
-            break
-        case "write":
-            break
-        case "/respawn":
-            client.write('client_command', { payload: 0 })
-            break
-        case "//reco":
-            client.end("")
-            client = commandLineCreateClient()
-            break
-        case "//quit":
-            console.info('Disconnected')
-            client.end("")
-            break
-        case "//end":
-            console.info('Forcibly ended client')
-            process.exit(0)
-        default:
-            client.write('chat', { message: line })
-    }
-    rl.prompt()
-})

packages/client/start.sh

@@ -1,5 +0,0 @@
-while :; do
-    yarn emp
-    echo 进程退出 休眠120秒!
-    sleep 120
-done

packages/common/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/common",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript common package",
     "keywords": [
         "miaoscript",
@@ -19,11 +19,11 @@
         "test": "echo \"Error: run tests from root\" && exit 1"
     },
     "devDependencies": {
-        "@ccms/nashorn": "^0.24.0",
+        "@ccms/nashorn": "^0.27.6",
         "@javatypes/jdk": "^0.0.3",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "gitHead": "562e2d00175c9d3a99c8b672aa07e6d92706a027"
 }

packages/common/src/http.ts

@@ -19,12 +19,20 @@ interface RequestConfig {
     method?: Method
     headers?: { [key: string]: string }
     params?: { [key: string]: string }
-    data?: any
+    data?: any,
+    connectTimeout?: number,
+    readTimeout?: number,
 }
 
 function request(config: RequestConfig) {
     // @ts-ignore XMLHttpRequest class only exist nashorn polyfill
     let xhr = new XMLHttpRequest()
+    if (config.connectTimeout) {
+        xhr.connectTimeout = config.connectTimeout
+    }
+    if (config.readTimeout) {
+        xhr.readTimeout = config.readTimeout
+    }
     xhr.open(config.method, config.url, false)
     for (const header in config.headers) {
         xhr.setRequestHeader(header, config.headers[header])

packages/compile/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/compile",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript compile package",
     "keywords": [
         "miaoscript",
@@ -20,7 +20,7 @@
     },
     "devDependencies": {
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     }
 }

packages/container/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/container",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript container package",
     "keywords": [
         "miaoscript",
@@ -19,10 +19,10 @@
         "test": "echo \"Error: run tests from root\" && exit 1"
     },
     "devDependencies": {
-        "@ccms/nashorn": "^0.24.0",
+        "@ccms/nashorn": "^0.27.6",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "dependencies": {
         "inversify": "^6.0.1",

packages/core/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/core",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript core package",
     "keywords": [
         "miaoscript",
@@ -20,12 +20,12 @@
     },
     "devDependencies": {
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "dependencies": {
-        "@ccms/api": "^0.24.0",
-        "@ccms/container": "^0.24.0"
+        "@ccms/api": "^0.27.6",
+        "@ccms/container": "^0.27.6"
     },
     "gitHead": "781524f83e52cad26d7c480513e3c525df867121"
 }

packages/core/src/.gitignore

@@ -0,0 +1 @@
+script

packages/core/src/index.ts

@@ -9,6 +9,7 @@ import * as fs from '@ccms/common/dist/fs'
 import { VersionUtils } from '@ccms/common/dist/version'
 
 const UUID = Java.type('java.util.UUID')
+const MiaoScriptAPI = Java.type('pw.yumc.MiaoScript.api.MiaoScriptAPI')
 
 @provideSingleton(MiaoScriptCore)
 class MiaoScriptCore {
@@ -24,6 +25,10 @@ class MiaoScriptCore {
     enable() {
         process.emit('core.before.enable')
         this.loadServerConsole()
+        try {
+            MiaoScriptAPI.setPluginManager(this.pluginManager)
+        } catch (error) {
+        }
         this.loadPlugins()
         process.emit('core.after.enable')
         console.i18n("ms.core.engine.completed", {
@@ -105,7 +110,7 @@ function loadCoreScript(name) {
     try {
         let scriptname = name + (global.debug ? '-debug' : '')
         engineLoad({
-            script: http.get(`https://ms.yumc.pw/api/plugin/download/name/${scriptname}`),
+            script: http.get(`https://mscript.yumc.pw/api/plugin/download/name/${scriptname}`),
             name: `core/${scriptname}.js`
         })
     } catch (error: any) {
@@ -141,6 +146,7 @@ function createCore() {
     container.bind(server.ServerType).toConstantValue(type)
     container.bind(server.ServerChecker).toSelf().inSingletonScope()
     container.bind(server.NativePluginManager).toSelf().inSingletonScope()
+    container.bind(server.NativePluginChecker).toSelf().inSingletonScope()
     process.emit('core.after.initialize.detect')
 
     process.emit('core.before.package.initialize')

packages/database/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/database",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript database package",
     "keywords": [
         "miaoscript",
@@ -21,11 +21,11 @@
     "devDependencies": {
         "@javatypes/spring-jdbc": "^0.0.3",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "dependencies": {
-        "@ccms/api": "^0.24.0",
-        "@ccms/container": "^0.24.0"
+        "@ccms/api": "^0.27.6",
+        "@ccms/container": "^0.27.6"
     }
 }

packages/i18n/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/i18n",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript i18n package",
     "keywords": [
         "miaoscript",
@@ -19,11 +19,11 @@
         "test": "echo \"Error: run tests from root\" && exit 1"
     },
     "devDependencies": {
-        "@ccms/nashorn": "^0.24.0",
+        "@ccms/nashorn": "^0.27.6",
         "@types/js-yaml": "^4.0.5",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "dependencies": {
         "js-yaml": "^4.1.0"

packages/keyvalue/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/keyvalue",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript keyvalue package",
     "keywords": [
         "miaoscript",
@@ -19,18 +19,18 @@
         "test": "echo \"Error: run tests from root\" && exit 1"
     },
     "dependencies": {
-        "@ccms/api": "^0.24.0",
-        "@ccms/common": "^0.24.0",
-        "@ccms/container": "^0.24.0"
+        "@ccms/api": "^0.27.6",
+        "@ccms/common": "^0.27.6",
+        "@ccms/container": "^0.27.6"
     },
     "devDependencies": {
-        "@ccms/nashorn": "^0.24.0",
+        "@ccms/nashorn": "^0.27.6",
         "@javatypes/amqp-client": "^0.0.3",
         "@javatypes/spring-amqp": "^0.0.3",
         "@javatypes/spring-rabbit": "^0.0.3",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "gitHead": "2589633069d24f646ac09261b1b2304c21d4ea75"
 }

packages/molang/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/molang",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "A fast parser for Minecraft's MoLang",
     "main": "dist/index.js",
     "types": "dist/index.d.ts",
@@ -21,9 +21,9 @@
     },
     "homepage": "https://github.com/solvedDev/MoLang#readme",
     "devDependencies": {
-        "@types/node": "^17.0.25",
-        "rimraf": "^3.0.2",
-        "tslib": "^2.3.1",
-        "typescript": "^4.6.3"
+        "@types/node": "^18.13.0",
+        "rimraf": "^4.1.2",
+        "tslib": "^2.5.0",
+        "typescript": "^4.9.5"
     }
 }

packages/nashorn/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/nashorn",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript nashorn package",
     "keywords": [
         "miaoscript",
@@ -21,7 +21,7 @@
     },
     "devDependencies": {
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     }
 }

packages/nashorn/src/index.ts

@@ -64,8 +64,18 @@ declare global {
              * 引擎渠道
              */
             ScriptEngineChannel: string
+            /**
+             * 慢执行检测时间
+             */
             ScriptSlowExecuteTime: number
             ScriptEngineStartTime: number
+            /**
+             * 设置全局对象
+             * @param key 对象名称
+             * @param value 对象值
+             * @param config 对象属性
+             * @returns
+             */
             setGlobal: (key: string, value: any, config?: PropertyDescriptor & ThisType<any>) => void
             noop: () => void
             console: Console

packages/nodejs/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/nodejs",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript nodejs package",
     "keywords": [
         "miaoscript",
@@ -19,11 +19,11 @@
         "test": "echo \"Error: run tests from root\" && exit 1"
     },
     "devDependencies": {
-        "@ccms/nashorn": "^0.24.0",
+        "@ccms/nashorn": "^0.27.6",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "tslib": "^2.3.1",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "tslib": "^2.5.0",
+        "typescript": "^4.9.5"
     },
     "gitHead": "781524f83e52cad26d7c480513e3c525df867121"
 }

packages/nukkit/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/nukkit",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript nukkit package",
     "keywords": [
         "miaoscript",
@@ -21,12 +21,12 @@
     "devDependencies": {
         "@javatypes/nukkit-api": "^0.0.3",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "dependencies": {
-        "@ccms/api": "^0.24.0",
-        "@ccms/common": "^0.24.0",
-        "@ccms/container": "^0.24.0"
+        "@ccms/api": "^0.27.6",
+        "@ccms/common": "^0.27.6",
+        "@ccms/container": "^0.27.6"
     }
 }

packages/plugin/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/plugin",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript plugin package",
     "keywords": [
         "miaoscript",
@@ -22,15 +22,15 @@
         "@types/crypto-js": "^4.1.1",
         "@types/js-yaml": "^4.0.5",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "dependencies": {
-        "@ccms/api": "^0.24.0",
-        "@ccms/common": "^0.24.0",
-        "@ccms/container": "^0.24.0",
-        "@ccms/i18n": "^0.24.0",
-        "@ccms/verify": "^0.21.1",
+        "@ccms/api": "^0.27.6",
+        "@ccms/common": "^0.27.6",
+        "@ccms/container": "^0.27.6",
+        "@ccms/i18n": "^0.27.6",
+        "@ccms/verify": "^0.25.1",
         "crypto-js": "^4.1.1",
         "js-yaml": "^4.1.0"
     }

packages/plugin/src/command.ts

@@ -78,7 +78,7 @@ export class PluginCommandManager {
                         permission = `${pluginInstance.description.name.toLocaleLowerCase()}.${command}.${subcommand || 'main'}`
                     }
                     if (!sender.hasPermission(permission)) {
-                        return pluginInstance.logger.sender(sender, `§c你需要 ${permission} 权限 才可执行此命令.`)
+                        return pluginInstance.logger.sender(sender, `§c你需要 §4${permission} §c权限 才可执行此命令.`)
                     }
                 }
                 args.shift()
@@ -98,7 +98,7 @@ export class PluginCommandManager {
                 return (args.length == 1 ? cmdSubCache : []).concat(originCompleter?.apply(pluginInstance, [sender, command, args]) || [])
             }
         }
-        if (!cmdCompleter) { console.warn(`[${pluginInstance.description.name}] command ${cmd.name} is not registry tabCompleter`) }
+        if (!cmdCompleter) { console.debug(`[${pluginInstance.description.name}] command ${cmd.name} is not registry tabCompleter`) }
         return [cmdExecutor, cmdCompleter]
     }
 }

packages/plugin/src/config.ts

@@ -7,8 +7,7 @@ import { interfaces } from './interfaces'
 import { getPluginConfigMetadata } from './utils'
 
 import { PluginConfigLoader } from './config/interfaces'
-import './config/loader/json-loader'
-import './config/loader/yaml-loader'
+import './config/loader'
 
 @provideSingleton(PluginConfigManager)
 export class PluginConfigManager {
@@ -68,30 +67,25 @@ export class PluginConfigManager {
     private loadConfig0(plugin: plugin.Plugin, metadata: interfaces.ConfigMetadata) {
         try {
             let defaultValue = metadata.default ?? plugin[metadata.variable]
-            let configValue = defaultValue || {}
-            if (defaultValue) {
-                metadata.file = fs.concat(
-                    fs.file(plugin.description.loadMetadata.file).parent,
-                    plugin.description.name,
-                    metadata.filename
-                )
-                let configLoader = this.getConfigLoader(metadata.format)
-                if (!fs.exists(metadata.file)) {
-                    base.save(metadata.file, configLoader.dump(defaultValue))
-                    console.i18n("ms.plugin.manager.config.save.default", {
-                        plugin: plugin.description.name,
-                        name: metadata.name,
-                        format: metadata.format
-                    })
-                } else if (metadata.migrate) {
-                    configValue = configLoader.load(base.read(metadata.file)) || {}
-                    if (defaultValue && this.setDefaultValue(configValue, defaultValue, !!metadata.default)) {
-                        base.save(metadata.file, configLoader.dump(configValue))
-                    }
-                    console.debug(`[${plugin.description.name}] Load Config ${metadata.variable} from file ${metadata.file} =>
-${JSON.stringify(configValue, undefined, 4).substring(0, 500)}`)
-                }
+            metadata.file = fs.concat(
+                fs.file(plugin.description.loadMetadata.file).parent,
+                plugin.description.name,
+                metadata.filename
+            )
+            let configLoader = this.getConfigLoader(metadata.format)
+            if (!fs.exists(metadata.file) && defaultValue) {
+                base.save(metadata.file, configLoader.dump(defaultValue))
+                console.i18n("ms.plugin.manager.config.save.default", {
+                    plugin: plugin.description.name,
+                    name: metadata.name,
+                    format: metadata.format
+                })
             }
+            let configValue = configLoader.load(base.read(metadata.file)) || {}
+            if (metadata.migrate && defaultValue && this.setDefaultValue(configValue, defaultValue, !!metadata.default)) {
+                base.save(metadata.file, configLoader.dump(configValue))
+            }
+            console.debug(`[${plugin.description.name}] Load Config ${metadata.variable} from file ${metadata.file}`)
             this.defienConfigProp(plugin, metadata, configValue)
         } catch (error: any) {
             console.i18n("ms.plugin.manager.config.load.error", {

packages/plugin/src/event.ts

@@ -5,9 +5,11 @@ import { getPluginListenerMetadata } from './utils'
 @provideSingleton(PluginEventManager)
 export class PluginEventManager {
     @Autowired()
-    private EventManager: event.Event
+    private eventManager: event.Event
     @Autowired()
-    private ServerChecker: server.ServerChecker
+    private serverChecker: server.ServerChecker
+    @Autowired()
+    private nativePluginChecker: server.NativePluginChecker
 
     constructor() {
         process.on('plugin.before.enable', this.registryListener.bind(this))
@@ -15,26 +17,31 @@ export class PluginEventManager {
     }
 
     mapEventName() {
-        return this.EventManager.mapEventName().toFixed(0)
+        return this.eventManager.mapEventName().toFixed(0)
     }
 
     private registryListener(pluginInstance: plugin.Plugin) {
         let events = getPluginListenerMetadata(pluginInstance)
         for (const event of events) {
             // ignore space listener
-            if (!this.ServerChecker.check(event.servers)) {
-                console.debug(`[${pluginInstance.description.name}] ${event.target.constructor.name} incompatible event ${event.name} server(${event.servers}) ignore.`)
+            if (!this.serverChecker.check(event.servers)) {
+                console.debug(`[${pluginInstance.description.name}] ${event.target.constructor.name} incompatible server(${event.servers}) ignore event ${event.name}.`)
+                continue
+            }
+            // ignore space listener
+            if (!this.nativePluginChecker.check(event.plugins)) {
+                console.debug(`[${pluginInstance.description.name}] ${event.target.constructor.name} require native plugins(${event.plugins}) ignore event ${event.name}.`)
                 continue
             }
             // here must bind this to pluginInstance
             let exec = event.target[event.executor]
             let execBinded = exec.bind(pluginInstance)
             execBinded.executor = event.executor
-            exec.off = this.EventManager.listen(pluginInstance, event.name, execBinded, event.priority, event.ignoreCancel)
+            exec.off = this.eventManager.listen(pluginInstance, event.name, execBinded, event.priority, event.ignoreCancel)
         }
     }
 
     private unregistryListener(pluginInstance: plugin.Plugin) {
-        this.EventManager.disable(pluginInstance)
+        this.eventManager.disable(pluginInstance)
     }
 }

packages/plugin/src/interfaces.ts

@@ -73,6 +73,10 @@ export namespace interfaces {
          * 是否忽略已取消的事件
          */
         ignoreCancel?: boolean
+        /**
+         * 依赖插件 没有就不加载
+         */
+        plugins?: string[]
     }
     export interface ConfigMetadata extends plugin.BaseMetadata {
         /**

packages/plugin/src/manager.ts

@@ -2,12 +2,11 @@ import i18n from '@ccms/i18n'
 import { plugin, server } from '@ccms/api'
 import { provideSingleton, Container, ContainerInstance, Autowired } from '@ccms/container'
 
-import './config'
 import { interfaces } from './interfaces'
 import { PluginTaskManager } from './task'
 import { PluginEventManager } from './event'
-import { PluginCommandManager } from './command'
 import { PluginConfigManager } from './config'
+import { PluginCommandManager } from './command'
 
 const Thread = Java.type('java.lang.Thread')
 
@@ -93,18 +92,17 @@ export class PluginManagerImpl implements plugin.PluginManager {
         for (const [, scanner] of this.sacnnerMap) {
             try {
                 console.i18n('ms.plugin.manager.scan', { scanner: scanner.type, folder })
-                let plugins = scanner.scan(folder)
-                console.i18n('ms.plugin.manager.scan.finish', { scanner: scanner.type, folder, size: plugins.length })
-                plugins.forEach(loadMetadata => {
+                let loadMetadatas = scanner.scan(folder)
+                console.i18n('ms.plugin.manager.scan.finish', { scanner: scanner.type, folder, size: loadMetadatas.length })
+                for (const loadMetadata of loadMetadatas) {
                     try {
                         this.loadAndRequirePlugin(loadMetadata)
                     } catch (error: any) {
-                        console.error(`plugin scanner ${scanner.type} load ${loadMetadata.file} occurred error ${error}`)
+                        console.console(`§c扫描器 §4${scanner.type} §c文件 §4${loadMetadata.file.toString().replace(root, '')} §c编译失败 请提供下列错误给开发者`)
                         console.ex(error)
                     }
-                })
+                }
             } catch (error: any) {
-                console.error(`plugin scanner ${scanner.type} occurred error ${error}`)
                 console.ex(error)
             }
         }
@@ -229,8 +227,16 @@ export class PluginManagerImpl implements plugin.PluginManager {
         })
     }
 
+    has(name: string) {
+        return this.instanceMap.has(name)
+    }
+
+    get(name: string) {
+        return this.instanceMap.get(name) || null
+    }
+
     getPlugin(name: string) {
-        return this.instanceMap.get(name)
+        return this.instanceMap.get(name) || null
     }
 
     getPlugins() {

packages/polyfill/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/polyfill",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript polyfill package",
     "author": "MiaoWoo <admin@yumc.pw>",
     "homepage": "https://github.com/circlecloud/ms.git",
@@ -14,14 +14,14 @@
         "test": "echo \"Error: run tests from root\" && exit 1"
     },
     "dependencies": {
-        "@ccms/i18n": "^0.24.0",
-        "@ccms/nodejs": "^0.24.0",
-        "core-js": "^3.22.1"
+        "@ccms/i18n": "^0.27.6",
+        "@ccms/nodejs": "^0.27.6",
+        "core-js": "^3.27.2"
     },
     "devDependencies": {
-        "@ccms/nashorn": "^0.24.0",
+        "@ccms/nashorn": "^0.27.6",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     }
 }

packages/polyfill/src/index.ts

@@ -12,6 +12,7 @@ import 'core-js'
 process.on('exit', () => require.disable())
 global.setGlobal('Proxy', require('./proxy').Proxy)
 global.setGlobal('XMLHttpRequest', require('./xml-http-request').XMLHttpRequest)
+global.setGlobal('Buffer', require('./buffer').Buffer)
 global.setGlobal('Blob', require('blob-polyfill').Blob)
 console.i18n("ms.polyfill.completed", { time: (new Date().getTime() - polyfillStartTime) / 1000 })
 export default true

packages/polyfill/src/xml-http-request.ts

@@ -68,13 +68,14 @@ type EventType =
     | 'timeout'
     | 'loadend'
     | 'loadstart'
-type HttpHeader = { [key: string]: string }
-
+type RequestHttpHeader = { [key: string]: string }
+type HttpHeader = { [key: string]: string[] }
 
 const executor = Executors.newCachedThreadPool()
 
 export class XMLHttpRequest {
-    private _timeout: number = 120000;
+    private _connectTimeout: number = 5000;
+    private _readTimeout: number = 120000;
     private _responseType: ResponseType = 'text';
     private _withCredentials: boolean
 
@@ -84,7 +85,7 @@ export class XMLHttpRequest {
     private _url: string
     private _async: boolean
     private _mimeType: string
-    private _requestHeaders: HttpHeader = {};
+    private _requestHeaders: RequestHttpHeader = {};
 
     private _status: number = 0;
     private _statusText: string = null;
@@ -96,10 +97,22 @@ export class XMLHttpRequest {
     private _connection = null;
 
     get timeout() {
-        return this._timeout
+        return this._readTimeout
     }
     set timeout(timeout: number) {
-        this._timeout = timeout
+        this._readTimeout = timeout
+    }
+    get connectTimeout() {
+        return this._connectTimeout
+    }
+    set connectTimeout(timeout: number) {
+        this._connectTimeout = timeout
+    }
+    get readTimeout() {
+        return this._readTimeout
+    }
+    set readTimeout(timeout: number) {
+        this._readTimeout = timeout
     }
     get readyState() {
         return this._readyState
@@ -143,7 +156,7 @@ export class XMLHttpRequest {
         this._requestHeaders[key] = val
     }
     getResponseHeader(key: string): string {
-        return this._responseHeaders[key]
+        return this._responseHeaders[key]?.[0]
     }
     getAllResponseHeaders(): any {
         return this._responseHeaders
@@ -169,8 +182,8 @@ export class XMLHttpRequest {
         this._connection.setRequestMethod(this._method)
         this._connection.setDoOutput(true)
         this._connection.setDoInput(true)
-        this._connection.setConnectTimeout(this._timeout)
-        this._connection.setReadTimeout(this._timeout)
+        this._connection.setConnectTimeout(this._connectTimeout)
+        this._connection.setReadTimeout(this._readTimeout)
 
         this.setRequestHeader('X-Requested-With', 'XMLHttpRequest')
         this.setReadyState(ReadyState.OPENED)
@@ -181,7 +194,7 @@ export class XMLHttpRequest {
         }
         if (this._readyState !== ReadyState.OPENED) { throw new Error(`Error Status ${this._readyState}!`) }
         let future = executor.submit(new Callable({ call: () => this._send(body) }))
-        if (!this._async) { future.get(this._timeout, TimeUnit.MILLISECONDS) }
+        if (!this._async) { future.get(this._connectTimeout + this._readTimeout + 100, TimeUnit.MILLISECONDS) }
         return future
     }
     get() {
@@ -199,22 +212,23 @@ export class XMLHttpRequest {
     }
     abort() {
         this._connection.disconnect()
-        this.onabort && this.onabort()
+        this.onabort?.()
     }
 
     private _send(body?: string | object) {
         try {
             this._connection.connect()
-            this.onloadstart && this.onloadstart()
+            this.onloadstart?.()
             if (body) {
                 let bodyType = Object.prototype.toString.call(body)
-                if (typeof body !== "string") { throw new Error(`body(${bodyType}) must be string!`) }
+                if (typeof body !== "string") { throw new Error(`body(${bodyType}) must be string.`) }
                 var out = this._connection.getOutputStream()
                 out.write(new JavaString(body).getBytes(UTF_8))
                 out.flush()
                 out.close()
             }
             this.setReadyState(ReadyState.LOADING)
+            this.onload?.()
             this._status = this._connection.getResponseCode()
             this._statusText = this._connection.getResponseMessage()
             if (this._status >= 0 && this._status < 300) {
@@ -224,8 +238,8 @@ export class XMLHttpRequest {
             } else {
                 this._responseText = this.readOutput(this._connection.getErrorStream())
             }
-            this.setResponseHeaders(this._connection.getHeaderFields())
-            this.onloadend && this.onloadend()
+            this.setResponseHeaders()
+            this.onloadend?.()
         } catch (ex: any) {
             if (ex instanceof SocketTimeoutException && this.ontimeout) {
                 return this.ontimeout(ex)
@@ -239,15 +253,15 @@ export class XMLHttpRequest {
         }
     }
 
-    private setResponseHeaders(header: any) {
-        header.forEach((key: string | number, value: string | any[]) => {
-            this._responseHeaders[key + ''] = value[value.length - 1] + ''
+    private setResponseHeaders() {
+        this._connection.getHeaderFields().forEach((key: string | number, value: any[]) => {
+            this._responseHeaders[key + ''] = Java.from(value)
         })
     }
 
     private setReadyState(state: ReadyState) {
         this._readyState = state
-        this.onreadystatechange && this.onreadystatechange()
+        this.onreadystatechange?.()
     }
 
     private readOutput(input: any) {

packages/protocol/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/protocol",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript protocol package",
     "keywords": [
         "miaoscript",
@@ -21,7 +21,7 @@
     },
     "devDependencies": {
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     }
 }

packages/qrcode/package.json

@@ -0,0 +1,26 @@
+{
+    "name": "@ccms/qrcode",
+    "version": "0.27.6",
+    "description": "MiaoScript qrcode package",
+    "keywords": [
+        "miaoscript",
+        "minecraft",
+        "bukkit",
+        "sponge"
+    ],
+    "author": "MiaoWoo <admin@yumc.pw>",
+    "homepage": "https://github.com/circlecloud/ms.git",
+    "license": "ISC",
+    "main": "dist/index.js",
+    "scripts": {
+        "clean": "rimraf dist",
+        "watch": "tsc --watch",
+        "build": "yarn clean && tsc",
+        "test": "echo \"Error: run tests from root\" && exit 1"
+    },
+    "devDependencies": {
+        "reflect-metadata": "^0.1.13",
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
+    }
+}

packages/sponge/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/sponge",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript sponge package",
     "keywords": [
         "miaoscript",
@@ -21,12 +21,12 @@
     "devDependencies": {
         "@javatypes/sponge-api": "^0.0.3",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "dependencies": {
-        "@ccms/api": "^0.24.0",
-        "@ccms/common": "^0.24.0",
-        "@ccms/container": "^0.24.0"
+        "@ccms/api": "^0.27.6",
+        "@ccms/common": "^0.27.6",
+        "@ccms/container": "^0.27.6"
     }
 }

packages/sponge/src/particle.ts

@@ -1,32 +1,15 @@
 import { provideSingleton } from '@ccms/container'
-import { particle, plugin } from '@ccms/api'
+import { particle } from '@ccms/api'
 
 @provideSingleton(particle.ParticleManager)
 export class SpongeParticleManager extends particle.ParticleManager {
-    private globalSpawner = new SpongeParticleSpawner()
-    constructor() {
-        super()
-        particle.ParticleManager.globalSpawner = this.globalSpawner
-    }
-    protected getGlobalSpawner() {
-        return this.globalSpawner
-    }
 }
+@provideSingleton(particle.ParticleSpawner)
 export class SpongeParticleSpawner extends particle.ParticleSpawner {
-    spawnParticle(location: org.spongepowered.api.world.Location<any>, particle: any, count: number = 1) {
-        location.getPosition()
-        // location.getWorld().spawnParticle(particle, location, count)
-    }
     spawn(location: any, particle: particle.Particle) {
-        location.getWorld().spawnParticle(
-            particle.getParticle(),
-            location,
-            particle.getCount(),
-            particle.getOffsetX(),
-            particle.getOffsetY(),
-            particle.getOffsetZ(),
-            particle.getExtra(),
-            particle.getData()
-        )
+        throw new Error('Not Impl.')
+    }
+    spawnToPlayer(player: any, location: any, particle: particle.Particle) {
+        throw new Error('Not Impl.')
     }
 }

packages/spring/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/spring",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript spring package",
     "keywords": [
         "miaoscript",
@@ -20,13 +20,13 @@
     },
     "devDependencies": {
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "dependencies": {
-        "@ccms/api": "^0.24.0",
-        "@ccms/common": "^0.24.0",
-        "@ccms/container": "^0.24.0",
-        "@ccms/database": "^0.24.0"
+        "@ccms/api": "^0.27.6",
+        "@ccms/common": "^0.27.6",
+        "@ccms/container": "^0.27.6",
+        "@ccms/database": "^0.27.6"
     }
 }

packages/web/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/web",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript web package",
     "keywords": [
         "miaoscript",
@@ -25,11 +25,11 @@
         "@javatypes/spring-web": "^0.0.3",
         "@javatypes/tomcat": "^0.0.3",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     },
     "dependencies": {
-        "@ccms/api": "^0.24.0",
-        "@ccms/container": "^0.24.0"
+        "@ccms/api": "^0.27.6",
+        "@ccms/container": "^0.27.6"
     }
 }

packages/websocket/.prettierrc

@@ -0,0 +1,4 @@
+{
+    "tabWidth": 2,
+    "semi": true
+}

packages/websocket/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@ccms/websocket",
-    "version": "0.24.0",
+    "version": "0.27.6",
     "description": "MiaoScript websocket package",
     "keywords": [
         "miaoscript",
@@ -19,14 +19,15 @@
         "test": "echo \"Error: run tests from root\" && exit 1"
     },
     "dependencies": {
+        "@socket.io/component-emitter": "3.1.0",
         "backo2": "^1.0.2",
         "parseuri": "^0.0.6"
     },
     "devDependencies": {
-        "@ccms/nashorn": "^0.24.0",
+        "@ccms/nashorn": "^0.27.6",
         "@javatypes/tomcat-websocket-api": "^0.0.3",
         "reflect-metadata": "^0.1.13",
-        "rimraf": "^3.0.2",
-        "typescript": "^4.6.3"
+        "rimraf": "^4.1.2",
+        "typescript": "^4.9.5"
     }
 }

packages/websocket/src/client/index.ts

@@ -38,7 +38,7 @@ export class WebSocket extends EventEmitter {
 
     private client: Transport
 
-    constructor(url: string, subProtocol: string = '', headers: WebSocketHeader = {}) {
+    constructor(url: string, subProtocol: string | string[] = '', headers: WebSocketHeader = {}) {
         super()
         this.manager = manager
         this._url = url

packages/websocket/src/debug.ts

@@ -1 +1,57 @@
-export = (namepsace) => (...args) => { }//console.debug(namepsace, ...args)
+export = (namepsace) =>
+    (...args) => {
+        console.trace(`[${namepsace}] ` + format(...args))
+    } //console.debug(namepsace, ...args)
+let formatters: any = {}
+formatters.s = function (v) {
+    return v
+}
+formatters.j = function (v) {
+    try {
+        return JSON.stringify(v)
+    } catch (error: any) {
+        return "[UnexpectedJSONParseError]: " + error.message
+    }
+}
+/**
+ * Coerce `val`.
+ *
+ * @param {Mixed} val
+ * @return {Mixed}
+ * @api private
+ */
+function coerce(val) {
+    if (val instanceof Error) {
+        return val.stack || val.message
+    }
+    return val
+}
+function format(...args) {
+    // Apply any `formatters` transformations
+    args[0] = coerce(args[0])
+
+    if (typeof args[0] !== "string") {
+        // Anything else let's inspect with %O
+        args.unshift("%O")
+    }
+
+    let index = 0
+    args[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {
+        // If we encounter an escaped % then don't increase the array index
+        if (match === "%%") {
+            return "%"
+        }
+        index++
+        const formatter = formatters[format]
+        if (typeof formatter === "function") {
+            const val = args[index]
+            match = formatter.call(format, val)
+
+            // Now we need to remove `args[index]` since it's inlined in the `format`
+            args.splice(index, 1)
+            index--
+        }
+        return match
+    })
+    return args[0]
+}

packages/websocket/src/engine.io-client/contrib/has-cors.ts

@@ -0,0 +1,12 @@
+// imported from https://github.com/component/has-cors
+let value = false;
+
+try {
+    value = typeof XMLHttpRequest !== 'undefined' &&
+        'withCredentials' in new XMLHttpRequest();
+} catch (err) {
+    // if XMLHttp support is disabled in IE then it will throw
+    // when trying to create
+}
+
+export const hasCORS = value;

packages/websocket/src/engine.io-client/contrib/parseqs.ts

@@ -0,0 +1,38 @@
+// imported from https://github.com/galkn/querystring
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+
+export function encode(obj) {
+    let str = ''
+
+    for (let i in obj) {
+        if (obj.hasOwnProperty(i)) {
+            if (str.length) str += '&'
+            str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i])
+        }
+    }
+
+    return str
+}
+
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+
+export function decode(qs) {
+    let qry = {}
+    let pairs = qs.split('&')
+    for (let i = 0, l = pairs.length; i < l; i++) {
+        let pair = pairs[i].split('=')
+        qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1])
+    }
+    return qry
+}

packages/websocket/src/engine.io-client/contrib/parseuri.ts

@@ -0,0 +1,68 @@
+// imported from https://github.com/galkn/parseuri
+/**
+ * Parses an URI
+ *
+ * @author Steven Levithan <stevenlevithan.com> (MIT license)
+ * @api private
+ */
+const re = /^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/
+
+const parts = [
+    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
+]
+
+export function parse(str) {
+    const src = str,
+        b = str.indexOf('['),
+        e = str.indexOf(']')
+
+    if (b != -1 && e != -1) {
+        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length)
+    }
+
+    let m = re.exec(str || ''),
+        uri = {} as any,
+        i = 14
+
+    while (i--) {
+        uri[parts[i]] = m[i] || ''
+    }
+
+    if (b != -1 && e != -1) {
+        uri.source = src
+        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':')
+        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':')
+        uri.ipv6uri = true
+    }
+
+    uri.pathNames = pathNames(uri, uri['path'])
+    uri.queryKey = queryKey(uri, uri['query'])
+
+    return uri
+}
+
+function pathNames(obj, path) {
+    const regx = /\/{2,9}/g,
+        names = path.replace(regx, "/").split("/")
+
+    if (path.slice(0, 1) == '/' || path.length === 0) {
+        names.splice(0, 1)
+    }
+    if (path.slice(-1) == '/') {
+        names.splice(names.length - 1, 1)
+    }
+
+    return names
+}
+
+function queryKey(uri, query) {
+    const data = {}
+
+    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
+        if ($1) {
+            data[$1] = $2
+        }
+    })
+
+    return data
+}

packages/websocket/src/engine.io-client/contrib/yeast.ts

@@ -0,0 +1,62 @@
+// imported from https://github.com/unshiftio/yeast
+'use strict'
+
+const alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')
+    , length = 64
+    , map = {}
+let seed = 0
+    , i = 0
+    , prev
+
+/**
+ * Return a string representing the specified number.
+ *
+ * @param {Number} num The number to convert.
+ * @returns {String} The string representation of the number.
+ * @api public
+ */
+export function encode(num) {
+    let encoded = ''
+
+    do {
+        encoded = alphabet[num % length] + encoded
+        num = Math.floor(num / length)
+    } while (num > 0)
+
+    return encoded
+}
+
+/**
+ * Return the integer value specified by the given string.
+ *
+ * @param {String} str The string to convert.
+ * @returns {Number} The integer value represented by the string.
+ * @api public
+ */
+export function decode(str) {
+    let decoded = 0
+
+    for (i = 0; i < str.length; i++) {
+        decoded = decoded * length + map[str.charAt(i)]
+    }
+
+    return decoded
+}
+
+/**
+ * Yeast: A tiny growing id generator.
+ *
+ * @returns {String} A unique id.
+ * @api public
+ */
+export function yeast() {
+    const now = encode(+new Date())
+
+    if (now !== prev) return seed = 0, prev = now
+    return now + '.' + encode(seed++)
+}
+
+//
+// Map each character to its index.
+//
+for (; i < length; i++) map[alphabet[i]] = i

packages/websocket/src/engine.io-client/index.ts

@@ -1,16 +1,10 @@
-import { Socket } from './socket'
+import { Socket } from "./socket"
 
-export default (uri, opts) => new Socket(uri, opts)
-
-/**
- * Expose deps for legacy compatibility
- * and standalone browser access.
- */
-const protocol = Socket.protocol // this is an int
-export { Socket, protocol }
-// module.exports.Transport = require("./transport")
-// module.exports.transports = require("./transports/index")
-// module.exports.parser = require("../engine.io-parser")
-export * from './transport'
-export * from './transports/index'
-export * from '../engine.io-parser'
+export { Socket }
+export { SocketOptions } from "./socket"
+export const protocol = Socket.protocol
+export { Transport } from "./transport"
+export { transports } from "./transports/index"
+export { installTimerFunctions } from "./util"
+export { parse } from "./contrib/parseuri"
+export { nextTick } from "./transports/websocket-constructor"

packages/websocket/src/engine.io-client/socket.ts

@@ -1,21 +1,295 @@
-import transports from "./transports"
-// const transports = require("./transports/index")
-const Emitter = require("component-emitter")
-const debug = (...args: any) => console.debug('engine.io-client:socket', ...args)//require("debug")("engine.io-client:socket")
-import parser from "../engine.io-parser"
-const parseuri = require("parseuri")
-const parseqs = require("parseqs")
-import { installTimerFunctions } from "./util"
+// import { transports } from "./transports/index.js";
+import { transports } from "./transports"
+import { installTimerFunctions, byteLength } from "./util"
+import { decode } from "./contrib/parseqs"
+import { parse } from "./contrib/parseuri"
+// import debugModule from "debug"; // debug()
+import { Emitter } from "@socket.io/component-emitter"
+// import { protocol } from "engine.io-parser";
+import { protocol } from "../engine.io-parser"
+import type { Packet, BinaryType, PacketType, RawData } from "../engine.io-parser"
+import { CloseDetails, Transport } from "./transport"
+
+// const debug = debugModule("engine.io-client:socket"); // debug()
+const debug = require('../debug')('engine.io-client:socket')
+
+export interface SocketOptions {
+    /**
+     * The host that we're connecting to. Set from the URI passed when connecting
+     */
+    host: string
+
+    /**
+     * The hostname for our connection. Set from the URI passed when connecting
+     */
+    hostname: string
+
+    /**
+     * If this is a secure connection. Set from the URI passed when connecting
+     */
+    secure: boolean
+
+    /**
+     * The port for our connection. Set from the URI passed when connecting
+     */
+    port: string | number
+
+    /**
+     * Any query parameters in our uri. Set from the URI passed when connecting
+     */
+    query: { [key: string]: any }
+
+    /**
+     * `http.Agent` to use, defaults to `false` (NodeJS only)
+     */
+    agent: string | boolean
+
+    /**
+     * Whether the client should try to upgrade the transport from
+     * long-polling to something better.
+     * @default true
+     */
+    upgrade: boolean
+
+    /**
+     * Forces base 64 encoding for polling transport even when XHR2
+     * responseType is available and WebSocket even if the used standard
+     * supports binary.
+     */
+    forceBase64: boolean
+
+    /**
+     * The param name to use as our timestamp key
+     * @default 't'
+     */
+    timestampParam: string
+
+    /**
+     * Whether to add the timestamp with each transport request. Note: this
+     * is ignored if the browser is IE or Android, in which case requests
+     * are always stamped
+     * @default false
+     */
+    timestampRequests: boolean
+
+    /**
+     * A list of transports to try (in order). Engine.io always attempts to
+     * connect directly with the first one, provided the feature detection test
+     * for it passes.
+     * @default ['polling','websocket']
+     */
+    transports: string[]
+
+    /**
+     * The port the policy server listens on
+     * @default 843
+     */
+    policyPost: number
+
+    /**
+     * If true and if the previous websocket connection to the server succeeded,
+     * the connection attempt will bypass the normal upgrade process and will
+     * initially try websocket. A connection attempt following a transport error
+     * will use the normal upgrade process. It is recommended you turn this on
+     * only when using SSL/TLS connections, or if you know that your network does
+     * not block websockets.
+     * @default false
+     */
+    rememberUpgrade: boolean
+
+    /**
+     * Are we only interested in transports that support binary?
+     */
+    onlyBinaryUpgrades: boolean
+
+    /**
+     * Timeout for xhr-polling requests in milliseconds (0) (only for polling transport)
+     */
+    requestTimeout: number
+
+    /**
+     * Transport options for Node.js client (headers etc)
+     */
+    transportOptions: Object
+
+    /**
+     * (SSL) Certificate, Private key and CA certificates to use for SSL.
+     * Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    pfx: string
+
+    /**
+     * (SSL) Private key to use for SSL. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    key: string
+
+    /**
+     * (SSL) A string or passphrase for the private key or pfx. Can be
+     * used in Node.js client environment to manually specify certificate
+     * information.
+     */
+    passphrase: string
+
+    /**
+     * (SSL) Public x509 certificate to use. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    cert: string
+
+    /**
+     * (SSL) An authority certificate or array of authority certificates to
+     * check the remote host against.. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    ca: string | string[]
+
+    /**
+     * (SSL) A string describing the ciphers to use or exclude. Consult the
+     * [cipher format list]
+     * (http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT) for
+     * details on the format.. Can be used in Node.js client environment to
+     * manually specify certificate information.
+     */
+    ciphers: string
+
+    /**
+     * (SSL) If true, the server certificate is verified against the list of
+     * supplied CAs. An 'error' event is emitted if verification fails.
+     * Verification happens at the connection level, before the HTTP request
+     * is sent. Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    rejectUnauthorized: boolean
+
+    /**
+     * Headers that will be passed for each request to the server (via xhr-polling and via websockets).
+     * These values then can be used during handshake or for special proxies.
+     */
+    extraHeaders?: { [header: string]: string }
+
+    /**
+     * Whether to include credentials (cookies, authorization headers, TLS
+     * client certificates, etc.) with cross-origin XHR polling requests
+     * @default false
+     */
+    withCredentials: boolean
+
+    /**
+     * Whether to automatically close the connection whenever the beforeunload event is received.
+     * @default true
+     */
+    closeOnBeforeunload: boolean
+
+    /**
+     * Whether to always use the native timeouts. This allows the client to
+     * reconnect when the native timeout functions are overridden, such as when
+     * mock clocks are installed.
+     * @default false
+     */
+    useNativeTimers: boolean
+
+    /**
+     * weather we should unref the reconnect timer when it is
+     * create automatically
+     * @default false
+     */
+    autoUnref: boolean
+
+    /**
+     * parameters of the WebSocket permessage-deflate extension (see ws module api docs). Set to false to disable.
+     * @default false
+     */
+    perMessageDeflate: { threshold: number }
+
+    /**
+     * The path to get our client file from, in the case of the server
+     * serving it
+     * @default '/engine.io'
+     */
+    path: string
+
+    /**
+     * Whether we should add a trailing slash to the request path.
+     * @default true
+     */
+    addTrailingSlash: boolean
+
+    /**
+     * Either a single protocol string or an array of protocol strings. These strings are used to indicate sub-protocols,
+     * so that a single server can implement multiple WebSocket sub-protocols (for example, you might want one server to
+     * be able to handle different types of interactions depending on the specified protocol)
+     * @default []
+     */
+    protocols: string | string[]
+}
+
+interface HandshakeData {
+    sid: string
+    upgrades: string[]
+    pingInterval: number
+    pingTimeout: number
+    maxPayload: number
+}
+
+interface SocketReservedEvents {
+    open: () => void
+    handshake: (data: HandshakeData) => void
+    packet: (packet: Packet) => void
+    packetCreate: (packet: Packet) => void
+    data: (data) => void
+    message: (data) => void
+    drain: () => void
+    flush: () => void
+    heartbeat: () => void
+    ping: () => void
+    pong: () => void
+    error: (err: string | Error) => void
+    upgrading: (transport) => void
+    upgrade: (transport) => void
+    upgradeError: (err: Error) => void
+    close: (reason: string, description?: CloseDetails | Error) => void
+}
+
+type SocketState = "opening" | "open" | "closing" | "closed"
+
+export class Socket extends Emitter<{}, {}, SocketReservedEvents> {
+    public id: string
+    public transport: Transport
+    public binaryType: BinaryType
+    public readyState: SocketState
+    public writeBuffer: Packet[] = [];
+
+    private prevBufferLen: number
+    private upgrades
+    private pingInterval: number
+    private pingTimeout: number
+    private pingTimeoutTimer: NodeJS.Timer
+    private setTimeoutFn: typeof setTimeout
+    private clearTimeoutFn: typeof clearTimeout
+    private readonly beforeunloadEventListener: () => void
+    private readonly offlineEventListener: () => void
+    private upgrading: boolean
+    private maxPayload?: number
+
+    private readonly opts: Partial<SocketOptions>
+    private readonly secure: boolean
+    private readonly hostname: string
+    private readonly port: string | number
+    private readonly transports: string[]
+
+    static priorWebsocketSuccess: boolean
+    static protocol = protocol;
 
-export class Socket extends Emitter {
     /**
      * Socket constructor.
      *
      * @param {String|Object} uri or options
-     * @param {Object} options
+     * @param {Object} opts - options
      * @api public
      */
-    constructor(uri, opts: any = {}) {
+    constructor(uri, opts: Partial<SocketOptions> = {}) {
         super()
 
         if (uri && "object" === typeof uri) {
@@ -24,13 +298,13 @@ export class Socket extends Emitter {
         }
 
         if (uri) {
-            uri = parseuri(uri)
+            uri = parse(uri)
             opts.hostname = uri.host
             opts.secure = uri.protocol === "https" || uri.protocol === "wss"
             opts.port = uri.port
             if (uri.query) opts.query = uri.query
         } else if (opts.host) {
-            opts.hostname = parseuri(opts.host).host
+            opts.hostname = parse(opts.host).host
         }
 
         installTimerFunctions(this, opts)
@@ -53,11 +327,10 @@ export class Socket extends Emitter {
             (typeof location !== "undefined" && location.port
                 ? location.port
                 : this.secure
-                    ? 443
-                    : 80)
+                    ? "443"
+                    : "80")
 
-        this.transports = ["websocket"]
-        this.readyState = ""
+        this.transports = opts.transports || ["polling", "websocket"]
         this.writeBuffer = []
         this.prevBufferLen = 0
 
@@ -67,9 +340,9 @@ export class Socket extends Emitter {
                 agent: false,
                 withCredentials: false,
                 upgrade: true,
-                jsonp: true,
                 timestampParam: "t",
                 rememberUpgrade: false,
+                addTrailingSlash: true,
                 rejectUnauthorized: true,
                 perMessageDeflate: {
                     threshold: 1024
@@ -80,10 +353,12 @@ export class Socket extends Emitter {
             opts
         )
 
-        this.opts.path = this.opts.path.replace(/\/$/, "") + "/"
+        this.opts.path =
+            this.opts.path.replace(/\/$/, "") +
+            (this.opts.addTrailingSlash ? "/" : "")
 
         if (typeof this.opts.query === "string") {
-            this.opts.query = parseqs.decode(this.opts.query)
+            this.opts.query = decode(this.opts.query)
         }
 
         // set on handshake
@@ -100,21 +375,20 @@ export class Socket extends Emitter {
                 // Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener
                 // ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is
                 // closed/reloaded)
-                addEventListener(
-                    "beforeunload",
-                    () => {
-                        if (this.transport) {
-                            // silently close the transport
-                            this.transport.removeAllListeners()
-                            this.transport.close()
-                        }
-                    },
-                    false
-                )
+                this.beforeunloadEventListener = () => {
+                    if (this.transport) {
+                        // silently close the transport
+                        this.transport.removeAllListeners()
+                        this.transport.close()
+                    }
+                }
+                addEventListener("beforeunload", this.beforeunloadEventListener, false)
             }
             if (this.hostname !== "localhost") {
                 this.offlineEventListener = () => {
-                    this.onClose("transport close")
+                    this.onClose("transport close", {
+                        description: "network connection lost",
+                    })
                 }
                 addEventListener("offline", this.offlineEventListener, false)
             }
@@ -126,19 +400,16 @@ export class Socket extends Emitter {
     /**
      * Creates transport of the given type.
      *
-     * @param {String} transport name
+     * @param {String} name - transport name
      * @return {Transport}
-     * @api private
+     * @private
      */
-    createTransport(name, opt?) {
-        if (name != 'websocket') {
-            throw new Error('Only Support WebSocket in MiaoScript!')
-        }
+    private createTransport(name) {
         debug('creating transport "%s"', name)
-        const query: any = clone(this.opts.query)
+        const query: any = Object.assign({}, this.opts.query)
 
         // append engine.io protocol identifier
-        query.EIO = parser.protocol
+        query.EIO = protocol
 
         // transport name
         query.transport = name
@@ -155,21 +426,21 @@ export class Socket extends Emitter {
                 socket: this,
                 hostname: this.hostname,
                 secure: this.secure,
-                port: this.port
+                port: this.port,
             }
         )
 
-        debug("options: %j", JSON.stringify(opts))
-        debug("new func", transports[name])
+        debug("options: %j", opts)
+
         return new transports[name](opts)
     }
 
     /**
-     * Initializes transport to use and starts probe.
-     *
-     * @api private
-     */
-    open() {
+    * Initializes transport to use and starts probe.
+    *
+    * @private
+    */
+    private open() {
         let transport
         if (
             this.opts.rememberUpgrade &&
@@ -180,7 +451,7 @@ export class Socket extends Emitter {
         } else if (0 === this.transports.length) {
             // Emit error on next tick so it can be listened to
             this.setTimeoutFn(() => {
-                this.emit("error", "No transports available")
+                this.emitReserved("error", "No transports available")
             }, 0)
             return
         } else {
@@ -191,8 +462,8 @@ export class Socket extends Emitter {
         // Retry with the next transport if the transport is disabled (jsonp: false)
         try {
             transport = this.createTransport(transport)
-        } catch (error: any) {
-            debug("error while creating transport: %s", error)
+        } catch (e) {
+            debug("error while creating transport: %s", e)
             this.transports.shift()
             this.open()
             return
@@ -205,9 +476,9 @@ export class Socket extends Emitter {
     /**
      * Sets the current transport. Disables the existing one (if any).
      *
-     * @api private
+     * @private
      */
-    setTransport(transport) {
+    private setTransport(transport) {
         debug("setting transport %s", transport.name)
 
         if (this.transport) {
@@ -223,9 +494,7 @@ export class Socket extends Emitter {
             .on("drain", this.onDrain.bind(this))
             .on("packet", this.onPacket.bind(this))
             .on("error", this.onError.bind(this))
-            .on("close", () => {
-                this.onClose("transport close")
-            })
+            .on("close", (reason) => this.onClose("transport close", reason))
     }
 
     /**
@@ -234,9 +503,9 @@ export class Socket extends Emitter {
      * @param {String} transport name
      * @api private
      */
-    probe(name) {
+    private probe(name) {
         debug('probing transport "%s"', name)
-        let transport = this.createTransport(name, { probe: 1 })
+        let transport = this.createTransport(name)
         let failed = false
 
         Socket.priorWebsocketSuccess = false
@@ -251,7 +520,7 @@ export class Socket extends Emitter {
                 if ("pong" === msg.type && "probe" === msg.data) {
                     debug('probe transport "%s" pong', name)
                     this.upgrading = true
-                    this.emit("upgrading", transport)
+                    this.emitReserved("upgrading", transport)
                     if (!transport) return
                     Socket.priorWebsocketSuccess = "websocket" === transport.name
 
@@ -265,16 +534,17 @@ export class Socket extends Emitter {
 
                         this.setTransport(transport)
                         transport.send([{ type: "upgrade" }])
-                        this.emit("upgrade", transport)
+                        this.emitReserved("upgrade", transport)
                         transport = null
                         this.upgrading = false
                         this.flush()
                     })
                 } else {
                     debug('probe transport "%s" failed', name)
-                    const err: any = new Error("probe error")
+                    const err = new Error("probe error")
+                    // @ts-ignore
                     err.transport = transport.name
-                    this.emit("upgradeError", err)
+                    this.emitReserved("upgradeError", err)
                 }
             })
         }
@@ -293,14 +563,15 @@ export class Socket extends Emitter {
 
         // Handle any error that happens while probing
         const onerror = err => {
-            const error: any = new Error("probe error: " + err)
+            const error = new Error("probe error: " + err)
+            // @ts-ignore
             error.transport = transport.name
 
             freezeTransport()
 
             debug('probe transport "%s" failed because of error: %s', name, err)
 
-            this.emit("upgradeError", error)
+            this.emitReserved("upgradeError", error)
         }
 
         function onTransportClose() {
@@ -325,8 +596,8 @@ export class Socket extends Emitter {
             transport.removeListener("open", onTransportOpen)
             transport.removeListener("error", onerror)
             transport.removeListener("close", onTransportClose)
-            this.removeListener("close", onclose)
-            this.removeListener("upgrading", onupgrade)
+            this.off("close", onclose)
+            this.off("upgrading", onupgrade)
         }
 
         transport.once("open", onTransportOpen)
@@ -342,13 +613,13 @@ export class Socket extends Emitter {
     /**
      * Called when connection is deemed open.
      *
-     * @api public
+     * @api private
      */
-    onOpen() {
+    private onOpen() {
         debug("socket open")
         this.readyState = "open"
         Socket.priorWebsocketSuccess = "websocket" === this.transport.name
-        this.emit("open")
+        this.emitReserved("open")
         this.flush()
 
         // we check for `readyState` in case an `open`
@@ -372,7 +643,7 @@ export class Socket extends Emitter {
      *
      * @api private
      */
-    onPacket(packet) {
+    private onPacket(packet) {
         if (
             "opening" === this.readyState ||
             "open" === this.readyState ||
@@ -380,10 +651,10 @@ export class Socket extends Emitter {
         ) {
             debug('socket receive: type "%s", data "%s"', packet.type, packet.data)
 
-            this.emit("packet", packet)
+            this.emitReserved("packet", packet)
 
             // Socket is live - any packet counts
-            this.emit("heartbeat")
+            this.emitReserved("heartbeat")
 
             switch (packet.type) {
                 case "open":
@@ -393,19 +664,20 @@ export class Socket extends Emitter {
                 case "ping":
                     this.resetPingTimeout()
                     this.sendPacket("pong")
-                    this.emit("ping")
-                    this.emit("pong")
+                    this.emitReserved("ping")
+                    this.emitReserved("pong")
                     break
 
                 case "error":
-                    const err: any = new Error("server error")
+                    const err = new Error("server error")
+                    // @ts-ignore
                     err.code = packet.data
                     this.onError(err)
                     break
 
                 case "message":
-                    this.emit("data", packet.data)
-                    this.emit("message", packet.data)
+                    this.emitReserved("data", packet.data)
+                    this.emitReserved("message", packet.data)
                     break
             }
         } else {
@@ -416,16 +688,17 @@ export class Socket extends Emitter {
     /**
      * Called upon handshake completion.
      *
-     * @param {Object} handshake obj
+     * @param {Object} data - handshake obj
      * @api private
      */
-    onHandshake(data) {
-        this.emit("handshake", data)
+    private onHandshake(data) {
+        this.emitReserved("handshake", data)
         this.id = data.sid
         this.transport.query.sid = data.sid
         this.upgrades = this.filterUpgrades(data.upgrades)
         this.pingInterval = data.pingInterval
         this.pingTimeout = data.pingTimeout
+        this.maxPayload = data.maxPayload
         this.onOpen()
         // In case open handler closes socket
         if ("closed" === this.readyState) return
@@ -437,7 +710,7 @@ export class Socket extends Emitter {
      *
      * @api private
      */
-    resetPingTimeout() {
+    private resetPingTimeout() {
         this.clearTimeoutFn(this.pingTimeoutTimer)
         this.pingTimeoutTimer = this.setTimeoutFn(() => {
             this.onClose("ping timeout")
@@ -452,7 +725,7 @@ export class Socket extends Emitter {
      *
      * @api private
      */
-    onDrain() {
+    private onDrain() {
         this.writeBuffer.splice(0, this.prevBufferLen)
 
         // setting prevBufferLen = 0 is very important
@@ -461,7 +734,7 @@ export class Socket extends Emitter {
         this.prevBufferLen = 0
 
         if (0 === this.writeBuffer.length) {
-            this.emit("drain")
+            this.emitReserved("drain")
         } else {
             this.flush()
         }
@@ -472,22 +745,53 @@ export class Socket extends Emitter {
      *
      * @api private
      */
-    flush() {
+    private flush() {
         if (
             "closed" !== this.readyState &&
             this.transport.writable &&
             !this.upgrading &&
             this.writeBuffer.length
         ) {
-            debug("flushing %d packets in socket", this.writeBuffer.length)
-            this.transport.send(this.writeBuffer)
+            const packets = this.getWritablePackets()
+            debug("flushing %d packets in socket", packets.length)
+            this.transport.send(packets)
             // keep track of current length of writeBuffer
             // splice writeBuffer and callbackBuffer on `drain`
-            this.prevBufferLen = this.writeBuffer.length
-            this.emit("flush")
+            this.prevBufferLen = packets.length
+            this.emitReserved("flush")
         }
     }
 
+    /**
+     * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
+     * long-polling)
+     *
+     * @private
+     */
+    private getWritablePackets() {
+        const shouldCheckPayloadSize =
+            this.maxPayload &&
+            this.transport.name === "polling" &&
+            this.writeBuffer.length > 1
+        if (!shouldCheckPayloadSize) {
+            return this.writeBuffer
+        }
+        let payloadSize = 1 // first packet type
+        for (let i = 0; i < this.writeBuffer.length; i++) {
+            const data = this.writeBuffer[i].data
+            if (data) {
+                payloadSize += byteLength(data)
+            }
+            if (i > 0 && payloadSize > this.maxPayload) {
+                debug("only send %d out of %d packets", i, this.writeBuffer.length)
+                return this.writeBuffer.slice(0, i)
+            }
+            payloadSize += 2 // separator + packet type
+        }
+        debug("payload size is %d (max: %d)", payloadSize, this.maxPayload)
+        return this.writeBuffer
+    }
+
     /**
      * Sends a message.
      *
@@ -497,12 +801,12 @@ export class Socket extends Emitter {
      * @return {Socket} for chaining.
      * @api public
      */
-    write(msg, options, fn) {
+    public write(msg, options, fn?) {
         this.sendPacket("message", msg, options, fn)
         return this
     }
 
-    send(msg, options, fn) {
+    public send(msg, options, fn?) {
         this.sendPacket("message", msg, options, fn)
         return this
     }
@@ -516,7 +820,7 @@ export class Socket extends Emitter {
      * @param {Function} callback function.
      * @api private
      */
-    sendPacket(type, data?, options?, fn?) {
+    private sendPacket(type, data?, options?, fn?) {
         if ("function" === typeof data) {
             fn = data
             data = undefined
@@ -539,7 +843,7 @@ export class Socket extends Emitter {
             data: data,
             options: options
         }
-        this.emit("packetCreate", packet)
+        this.emitReserved("packetCreate", packet)
         this.writeBuffer.push(packet)
         if (fn) this.once("flush", fn)
         this.flush()
@@ -548,9 +852,9 @@ export class Socket extends Emitter {
     /**
      * Closes the connection.
      *
-     * @api private
+     * @api public
      */
-    close() {
+    public close() {
         const close = () => {
             this.onClose("forced close")
             debug("socket closing - telling transport to close")
@@ -558,8 +862,8 @@ export class Socket extends Emitter {
         }
 
         const cleanupAndClose = () => {
-            this.removeListener("upgrade", cleanupAndClose)
-            this.removeListener("upgradeError", cleanupAndClose)
+            this.off("upgrade", cleanupAndClose)
+            this.off("upgradeError", cleanupAndClose)
             close()
         }
 
@@ -595,10 +899,10 @@ export class Socket extends Emitter {
      *
      * @api private
      */
-    onError(err) {
+    private onError(err) {
         debug("socket error %j", err)
         Socket.priorWebsocketSuccess = false
-        this.emit("error", err)
+        this.emitReserved("error", err)
         this.onClose("transport error", err)
     }
 
@@ -607,7 +911,7 @@ export class Socket extends Emitter {
      *
      * @api private
      */
-    onClose(reason, desc?) {
+    private onClose(reason: string, description?: CloseDetails | Error) {
         if (
             "opening" === this.readyState ||
             "open" === this.readyState ||
@@ -616,7 +920,6 @@ export class Socket extends Emitter {
             debug('socket close with reason: "%s"', reason)
 
             // clear timers
-            this.clearTimeoutFn(this.pingIntervalTimer)
             this.clearTimeoutFn(this.pingTimeoutTimer)
 
             // stop event from firing again for transport
@@ -629,6 +932,11 @@ export class Socket extends Emitter {
             this.transport.removeAllListeners()
 
             if (typeof removeEventListener === "function") {
+                removeEventListener(
+                    "beforeunload",
+                    this.beforeunloadEventListener,
+                    false
+                )
                 removeEventListener("offline", this.offlineEventListener, false)
             }
 
@@ -639,7 +947,7 @@ export class Socket extends Emitter {
             this.id = null
 
             // emit close event
-            this.emit("close", reason, desc)
+            this.emitReserved("close", reason, description)
 
             // clean buffers after, so users can still
             // grab the buffers on `close` event
@@ -655,7 +963,7 @@ export class Socket extends Emitter {
      * @api private
      *
      */
-    filterUpgrades(upgrades) {
+    private filterUpgrades(upgrades) {
         const filteredUpgrades = []
         let i = 0
         const j = upgrades.length
@@ -666,23 +974,3 @@ export class Socket extends Emitter {
         return filteredUpgrades
     }
 }
-
-Socket.priorWebsocketSuccess = false
-
-/**
- * Protocol version.
- *
- * @api public
- */
-
-Socket.protocol = parser.protocol // this is an int
-
-function clone(obj) {
-    const o = {}
-    for (let i in obj) {
-        if (obj.hasOwnProperty(i)) {
-            o[i] = obj[i]
-        }
-    }
-    return o
-}

packages/websocket/src/engine.io-client/transport.ts

@@ -1,61 +1,103 @@
-import parser from "../engine.io-parser"
-const Emitter = require("component-emitter")
+// import { decodePacket, Packet, RawData } from "engine.io-parser"
+import { decodePacket, Packet, RawData } from "../engine.io-parser"
+import { Emitter } from "@socket.io/component-emitter"
 import { installTimerFunctions } from "./util"
-const debug = (...args: any) => console.debug('engine.io-client:transport', ...args)//require("debug")("engine.io-client:transport")
+// import debugModule from "debug"; // debug()
+import { SocketOptions } from "./socket"
+
+// const debug = debugModule("engine.io-client:transport"); // debug()
+const debug = require('../debug')("engine.io-client:transport") // debug()
+
+class TransportError extends Error {
+    public readonly type = "TransportError";
+
+    constructor(
+        reason: string,
+        readonly description: any,
+        readonly context: any
+    ) {
+        super(reason)
+    }
+}
+
+export interface CloseDetails {
+    description: string
+    context?: unknown // context should be typed as CloseEvent | XMLHttpRequest, but these types are not available on non-browser platforms
+}
+
+interface TransportReservedEvents {
+    open: () => void
+    error: (err: TransportError) => void
+    packet: (packet: Packet) => void
+    close: (details?: CloseDetails) => void
+    poll: () => void
+    pollComplete: () => void
+    drain: () => void
+}
+
+type TransportState = "opening" | "open" | "closed" | "pausing" | "paused"
+
+export abstract class Transport extends Emitter<
+    Record<never, never>,
+    Record<never, never>,
+    TransportReservedEvents
+> {
+    public query: Record<string, string>
+    public writable: boolean = false;
+
+    protected opts: SocketOptions
+    protected supportsBinary: boolean
+    protected readyState: TransportState
+    protected socket: any
+    protected setTimeoutFn: typeof setTimeout
 
-export class Transport extends Emitter {
     /**
-     * Transport abstract constructor.
-     *
-     * @param {Object} options.
-     * @api private
-     */
+      * Transport abstract constructor.
+      *
+      * @param {Object} opts - options
+      * @protected
+      */
     constructor(opts) {
         super()
         installTimerFunctions(this, opts)
 
         this.opts = opts
         this.query = opts.query
-        this.readyState = ""
         this.socket = opts.socket
     }
 
     /**
      * Emits an error.
      *
-     * @param {String} str
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
      * @return {Transport} for chaining
-     * @api public
+     * @protected
      */
-    onError(msg, desc) {
-        const err: any = new Error(msg)
-        err.type = "TransportError"
-        err.description = desc
-        this.emit("error", err)
+    protected onError(reason: string, description: any, context?: any) {
+        super.emitReserved(
+            "error",
+            new TransportError(reason, description, context)
+        )
         return this
     }
 
     /**
      * Opens the transport.
-     *
-     * @api public
      */
-    open() {
-        if ("closed" === this.readyState || "" === this.readyState) {
-            this.readyState = "opening"
-            this.doOpen()
-        }
+    public open() {
+        this.readyState = "opening"
+        this.doOpen()
 
         return this
     }
 
     /**
      * Closes the transport.
-     *
-     * @api private
      */
-    close() {
-        if ("opening" === this.readyState || "open" === this.readyState) {
+    public close() {
+        if (this.readyState === "opening" || this.readyState === "open") {
             this.doClose()
             this.onClose()
         }
@@ -67,10 +109,9 @@ export class Transport extends Emitter {
      * Sends multiple packets.
      *
      * @param {Array} packets
-     * @api private
      */
-    send(packets) {
-        if ("open" === this.readyState) {
+    public send(packets) {
+        if (this.readyState === "open") {
             this.write(packets)
         } else {
             // this might happen if the transport was silently closed in the beforeunload event handler
@@ -81,39 +122,58 @@ export class Transport extends Emitter {
     /**
      * Called upon open
      *
-     * @api private
+     * @protected
      */
-    onOpen() {
+    protected onOpen() {
         this.readyState = "open"
         this.writable = true
-        this.emit("open")
+        super.emitReserved("open")
     }
 
     /**
      * Called with data.
      *
      * @param {String} data
-     * @api private
+     * @protected
      */
-    onData(data) {
-        const packet = parser.decodePacket(data, this.socket.binaryType)
+    protected onData(data: RawData) {
+        const packet = decodePacket(data, this.socket.binaryType)
         this.onPacket(packet)
     }
 
+
     /**
      * Called with a decoded packet.
+     *
+     * @protected
      */
-    onPacket(packet) {
-        this.emit("packet", packet)
+    protected onPacket(packet: Packet) {
+        super.emitReserved("packet", packet)
     }
 
     /**
      * Called upon close.
      *
-     * @api private
+     * @protected
      */
-    onClose() {
+    protected onClose(details?: CloseDetails) {
         this.readyState = "closed"
-        this.emit("close")
+        super.emitReserved("close", details)
     }
+
+    /**
+     * The name of the transport
+     */
+    public abstract get name(): string
+
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    public pause(onPause: () => void) { }
+
+    protected abstract doOpen()
+    protected abstract doClose()
+    protected abstract write(packets: Packet[])
 }

packages/websocket/src/engine.io-client/transports/index.ts

@@ -1,4 +1,5 @@
-import { WS } from "./websocket"
-export default {
-    'websocket': WS
+import { WS } from "./websocket.js"
+
+export const transports = {
+    websocket: WS,
 }

packages/websocket/src/engine.io-client/transports/websocket-constructor.ts

@@ -0,0 +1,6 @@
+import { WebSocket as ws } from "../../client"
+
+export const WebSocket = ws
+export const usingBrowserWebSocket = false
+export const defaultBinaryType = "nodebuffer"
+export const nextTick = process.nextTick

packages/websocket/src/engine.io-client/transports/websocket.ts

@@ -1,21 +1,18 @@
-import { Transport } from '../transport'
-// const Transport = require("../transport")
-import parser from '../../engine.io-parser'
-// const parser = require("../engine.io-parser")
-const parseqs = require("parseqs")
-const yeast = require("yeast")
-import { pick } from '../util'
-// const { pick } = require("../util")
-import { WebSocket } from '../../client'
-const usingBrowserWebSocket = true
-// const {
-//     WebSocket,
-//     usingBrowserWebSocket,
-//     defaultBinaryType,
-//     nextTick
-// } = require("./websocket-constructor")
+import { Transport } from "../transport"
+import { encode } from "../contrib/parseqs"
+import { yeast } from "../contrib/yeast"
+import { pick } from "../util"
+import {
+    defaultBinaryType,
+    nextTick,
+    usingBrowserWebSocket,
+    WebSocket
+} from "./websocket-constructor"
+// import debugModule from "debug" // debug()
+import { encodePacket } from "../../engine.io-parser"
 
-const debug = (...args: any) => console.debug('engine.io-client:websocket', ...args)//require("debug")("engine.io-client:websocket")
+// const debug = debugModule("engine.io-client:websocket") // debug()
+const debug = (...args: any) => console.debug('engine.io-client:websocket', ...args)
 
 // detect ReactNative environment
 const isReactNative =
@@ -24,11 +21,13 @@ const isReactNative =
     navigator.product.toLowerCase() === "reactnative"
 
 export class WS extends Transport {
+    private ws: any
+
     /**
      * WebSocket transport constructor.
      *
-     * @api {Object} connection options
-     * @api public
+     * @param {Object} opts - connection options
+     * @protected
      */
     constructor(opts) {
         super(opts)
@@ -36,21 +35,11 @@ export class WS extends Transport {
         this.supportsBinary = !opts.forceBase64
     }
 
-    /**
-     * Transport name.
-     *
-     * @api public
-     */
-    get name() {
+    override get name() {
         return "websocket"
     }
 
-    /**
-     * Opens socket.
-     *
-     * @api private
-     */
-    doOpen() {
+    override doOpen() {
         if (!this.check()) {
             // let probe timeout
             return
@@ -86,17 +75,17 @@ export class WS extends Transport {
         }
 
         try {
-            this.ws = new WebSocket(uri, protocols)
-            // usingBrowserWebSocket && !isReactNative
-            //     ? protocols
-            //         ? new WebSocket(uri, protocols)
-            //         : new WebSocket(uri)
-            //     : new WebSocket(uri, protocols, opts)
-        } catch (err) {
-            return this.emit("error", err)
+            this.ws =
+                usingBrowserWebSocket && !isReactNative
+                    ? protocols
+                        ? new WebSocket(uri, protocols)
+                        : new WebSocket(uri)
+                    : new WebSocket(uri, protocols, opts)
+        } catch (err: any) {
+            return this.emitReserved("error", err)
         }
 
-        this.ws.binaryType = this.socket.binaryType || 'arraybuffer'
+        this.ws.binaryType = this.socket.binaryType || defaultBinaryType
 
         this.addEventListeners()
     }
@@ -104,27 +93,25 @@ export class WS extends Transport {
     /**
      * Adds event listeners to the socket
      *
-     * @api private
+     * @private
      */
-    addEventListeners() {
+    private addEventListeners() {
         this.ws.onopen = () => {
             if (this.opts.autoUnref) {
                 this.ws._socket.unref()
             }
             this.onOpen()
         }
-        this.ws.onclose = this.onClose.bind(this)
-        this.ws.onmessage = ev => this.onData(ev.data)
-        this.ws.onerror = e => this.onError("websocket error", e)
+        this.ws.onclose = (closeEvent) =>
+            this.onClose({
+                description: "websocket connection closed",
+                context: closeEvent,
+            })
+        this.ws.onmessage = (ev) => this.onData(ev.data)
+        this.ws.onerror = (e) => this.onError("websocket error", e)
     }
 
-    /**
-     * Writes data to socket.
-     *
-     * @param {Array} array of packets.
-     * @api private
-     */
-    write(packets) {
+    override write(packets) {
         this.writable = false
 
         // encodePacket efficient as it uses WS framing
@@ -133,9 +120,9 @@ export class WS extends Transport {
             const packet = packets[i]
             const lastPacket = i === packets.length - 1
 
-            parser.encodePacket(packet, this.supportsBinary, data => {
+            encodePacket(packet, this.supportsBinary, (data) => {
                 // always create a new object (GH-437)
-                const opts: any = {}
+                const opts: { compress?: boolean } = {}
                 if (!usingBrowserWebSocket) {
                     if (packet.options) {
                         opts.compress = packet.options.compress
@@ -143,6 +130,7 @@ export class WS extends Transport {
 
                     if (this.opts.perMessageDeflate) {
                         const len =
+                            // @ts-ignore
                             "string" === typeof data ? Buffer.byteLength(data) : data.length
                         if (len < this.opts.perMessageDeflate.threshold) {
                             opts.compress = false
@@ -160,37 +148,23 @@ export class WS extends Transport {
                     } else {
                         this.ws.send(data, opts)
                     }
-                } catch (error: any) {
+                } catch (e) {
                     debug("websocket closed before onclose event")
                 }
 
                 if (lastPacket) {
                     // fake drain
                     // defer to next tick to allow Socket to clear writeBuffer
-                    process.nextTick(() => {
+                    nextTick(() => {
                         this.writable = true
-                        this.emit("drain")
+                        this.emitReserved("drain")
                     }, this.setTimeoutFn)
                 }
             })
         }
     }
 
-    /**
-     * Called upon close
-     *
-     * @api private
-     */
-    onClose() {
-        Transport.prototype.onClose.call(this)
-    }
-
-    /**
-     * Closes socket.
-     *
-     * @api private
-     */
-    doClose() {
+    override doClose() {
         if (typeof this.ws !== "undefined") {
             this.ws.close()
             this.ws = null
@@ -200,10 +174,10 @@ export class WS extends Transport {
     /**
      * Generates uri for connection.
      *
-     * @api private
+     * @private
      */
     uri() {
-        let query = this.query || {}
+        let query: { b64?: number } = this.query || {}
         const schema = this.opts.secure ? "wss" : "ws"
         let port = ""
 
@@ -226,21 +200,16 @@ export class WS extends Transport {
             query.b64 = 1
         }
 
-        query = parseqs.encode(query)
-
-        // prepend ? to query
-        if (query.length) {
-            query = "?" + query
-        }
-
+        const encodedQuery = encode(query)
         const ipv6 = this.opts.hostname.indexOf(":") !== -1
+
         return (
             schema +
             "://" +
             (ipv6 ? "[" + this.opts.hostname + "]" : this.opts.hostname) +
             port +
             this.opts.path +
-            query
+            (encodedQuery.length ? "?" + encodedQuery : "")
         )
     }
 
@@ -248,12 +217,9 @@ export class WS extends Transport {
      * Feature detection for WebSocket.
      *
      * @return {Boolean} whether this transport is available.
-     * @api public
+     * @private
      */
-    check() {
-        return (
-            !!WebSocket &&
-            !("__initialize" in WebSocket && this.name === WS.prototype.name)
-        )
+    private check() {
+        return !!WebSocket
     }
 }

packages/websocket/src/engine.io-client/util.ts

@@ -1,4 +1,6 @@
-const pick = (obj, ...attr) => {
+// import { globalThisShim as globalThis } from "./globalThis.js"
+
+export function pick(obj, ...attr) {
     return attr.reduce((acc, k) => {
         if (obj.hasOwnProperty(k)) {
             acc[k] = obj[k]
@@ -8,16 +10,46 @@ const pick = (obj, ...attr) => {
 }
 
 // Keep a reference to the real timeout functions so they can be used when overridden
-const NATIVE_SET_TIMEOUT = setTimeout
-const NATIVE_CLEAR_TIMEOUT = clearTimeout
+const NATIVE_SET_TIMEOUT = globalThis.setTimeout
+const NATIVE_CLEAR_TIMEOUT = globalThis.clearTimeout
 
-const installTimerFunctions = (obj, opts) => {
+export function installTimerFunctions(obj, opts) {
     if (opts.useNativeTimers) {
         obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globalThis)
         obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globalThis)
     } else {
-        obj.setTimeoutFn = setTimeout.bind(globalThis)
-        obj.clearTimeoutFn = clearTimeout.bind(globalThis)
+        obj.setTimeoutFn = globalThis.setTimeout.bind(globalThis)
+        obj.clearTimeoutFn = globalThis.clearTimeout.bind(globalThis)
     }
 }
-export { pick, installTimerFunctions }
+
+// base64 encoded buffers are about 33% bigger (https://en.wikipedia.org/wiki/Base64)
+const BASE64_OVERHEAD = 1.33
+
+// we could also have used `new Blob([obj]).size`, but it isn't supported in IE9
+export function byteLength(obj) {
+    if (typeof obj === "string") {
+        return utf8Length(obj)
+    }
+    // arraybuffer or blob
+    return Math.ceil((obj.byteLength || obj.size) * BASE64_OVERHEAD)
+}
+
+function utf8Length(str) {
+    let c = 0,
+        length = 0
+    for (let i = 0, l = str.length; i < l; i++) {
+        c = str.charCodeAt(i)
+        if (c < 0x80) {
+            length += 1
+        } else if (c < 0x800) {
+            length += 2
+        } else if (c < 0xd800 || c >= 0xe000) {
+            length += 3
+        } else {
+            i++
+            length += 4
+        }
+    }
+    return length
+}

packages/websocket/src/engine.io-parser/commons.ts

@@ -1,21 +1,39 @@
-const PACKET_TYPES = Object.create(null) // no Map = no polyfill
-PACKET_TYPES["open"] = "0"
-PACKET_TYPES["close"] = "1"
-PACKET_TYPES["ping"] = "2"
-PACKET_TYPES["pong"] = "3"
-PACKET_TYPES["message"] = "4"
-PACKET_TYPES["upgrade"] = "5"
-PACKET_TYPES["noop"] = "6"
+const PACKET_TYPES = Object.create(null); // no Map = no polyfill
+PACKET_TYPES["open"] = "0";
+PACKET_TYPES["close"] = "1";
+PACKET_TYPES["ping"] = "2";
+PACKET_TYPES["pong"] = "3";
+PACKET_TYPES["message"] = "4";
+PACKET_TYPES["upgrade"] = "5";
+PACKET_TYPES["noop"] = "6";
 
-const PACKET_TYPES_REVERSE = Object.create(null)
+const PACKET_TYPES_REVERSE = Object.create(null);
 Object.keys(PACKET_TYPES).forEach(key => {
-    PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key
-})
+  PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;
+});
 
-const ERROR_PACKET = { type: "error", data: "parser error" }
+const ERROR_PACKET: Packet = { type: "error", data: "parser error" };
 
-export = {
-    PACKET_TYPES,
-    PACKET_TYPES_REVERSE,
-    ERROR_PACKET
+export { PACKET_TYPES, PACKET_TYPES_REVERSE, ERROR_PACKET };
+
+export type PacketType =
+  | "open"
+  | "close"
+  | "ping"
+  | "pong"
+  | "message"
+  | "upgrade"
+  | "noop"
+  | "error";
+
+// RawData should be "string | Buffer | ArrayBuffer | ArrayBufferView | Blob", but Blob does not exist in Node.js and
+// requires to add the dom lib in tsconfig.json
+export type RawData = any;
+
+export interface Packet {
+  type: PacketType;
+  options?: { compress: boolean };
+  data?: RawData;
 }
+
+export type BinaryType = "nodebuffer" | "arraybuffer" | "blob";

packages/websocket/src/engine.io-parser/decodePacket.ts

@@ -1,48 +1,60 @@
-const { PACKET_TYPES_REVERSE, ERROR_PACKET } = require("./commons")
+import {
+  ERROR_PACKET,
+  PACKET_TYPES_REVERSE,
+  Packet,
+  BinaryType,
+  RawData
+} from "./commons.js";
 
-export const decodePacket = (encodedPacket, binaryType) => {
-    if (typeof encodedPacket !== "string") {
-        return {
-            type: "message",
-            data: mapBinary(encodedPacket, binaryType)
-        }
-    }
-    const type = encodedPacket.charAt(0)
-    if (type === "b") {
-        const buffer = Buffer.from(encodedPacket.substring(1), "base64")
-        return {
-            type: "message",
-            data: mapBinary(buffer, binaryType)
-        }
-    }
-    if (!PACKET_TYPES_REVERSE[type]) {
-        return ERROR_PACKET
-    }
-    return encodedPacket.length > 1
-        ? {
-            type: PACKET_TYPES_REVERSE[type],
-            data: encodedPacket.substring(1)
-        }
-        : {
-            type: PACKET_TYPES_REVERSE[type]
-        }
-}
+const decodePacket = (
+  encodedPacket: RawData,
+  binaryType?: BinaryType
+): Packet => {
+  if (typeof encodedPacket !== "string") {
+    return {
+      type: "message",
+      data: mapBinary(encodedPacket, binaryType)
+    };
+  }
+  const type = encodedPacket.charAt(0);
+  if (type === "b") {
+    const buffer = Buffer.from(encodedPacket.substring(1), "base64");
+    return {
+      type: "message",
+      data: mapBinary(buffer, binaryType)
+    };
+  }
+  if (!PACKET_TYPES_REVERSE[type]) {
+    return ERROR_PACKET;
+  }
+  return encodedPacket.length > 1
+    ? {
+        type: PACKET_TYPES_REVERSE[type],
+        data: encodedPacket.substring(1)
+      }
+    : {
+        type: PACKET_TYPES_REVERSE[type]
+      };
+};
 
-const mapBinary = (data, binaryType) => {
-    switch (binaryType) {
-        case "arraybuffer":
-            return Buffer.isBuffer(data) ? toArrayBuffer(data) : data
-        case "nodebuffer":
-        default:
-            return data // assuming the data is already a Buffer
-    }
-}
+const mapBinary = (data: RawData, binaryType?: BinaryType) => {
+  const isBuffer = Buffer.isBuffer(data);
+  switch (binaryType) {
+    case "arraybuffer":
+      return isBuffer ? toArrayBuffer(data) : data;
+    case "nodebuffer":
+    default:
+      return data; // assuming the data is already a Buffer
+  }
+};
 
-const toArrayBuffer = buffer => {
-    const arrayBuffer = new ArrayBuffer(buffer.length)
-    const view = new Uint8Array(arrayBuffer)
-    for (let i = 0; i < buffer.length; i++) {
-        view[i] = buffer[i]
-    }
-    return arrayBuffer
-}
+const toArrayBuffer = (buffer: Buffer): ArrayBuffer => {
+  const arrayBuffer = new ArrayBuffer(buffer.length);
+  const view = new Uint8Array(arrayBuffer);
+  for (let i = 0; i < buffer.length; i++) {
+    view[i] = buffer[i];
+  }
+  return arrayBuffer;
+};
+
+export default decodePacket;

packages/websocket/src/engine.io-parser/encodePacket.ts

@@ -1,26 +1,31 @@
-const { PACKET_TYPES } = require("./commons")
+import { PACKET_TYPES, Packet, RawData } from "./commons.js";
 
-export const encodePacket = ({ type, data }, supportsBinary, callback) => {
-    console.trace('encodePacket', type, JSON.stringify(data))
-    if (data instanceof ArrayBuffer || ArrayBuffer.isView(data)) {
-        const buffer = toBuffer(data)
-        return callback(encodeBuffer(buffer, supportsBinary))
-    }
-    // plain string
-    return callback(PACKET_TYPES[type] + (data || ""))
-}
+const encodePacket = (
+  { type, data }: Packet,
+  supportsBinary: boolean,
+  callback: (encodedPacket: RawData) => void
+) => {
+  if (data instanceof ArrayBuffer || ArrayBuffer.isView(data)) {
+    const buffer = toBuffer(data);
+    return callback(encodeBuffer(buffer, supportsBinary));
+  }
+  // plain string
+  return callback(PACKET_TYPES[type] + (data || ""));
+};
 
 const toBuffer = data => {
-    if (Buffer.isBuffer(data)) {
-        return data
-    } else if (data instanceof ArrayBuffer) {
-        return Buffer.from(data)
-    } else {
-        return Buffer.from(data.buffer, data.byteOffset, data.byteLength)
-    }
-}
+  if (Buffer.isBuffer(data)) {
+    return data;
+  } else if (data instanceof ArrayBuffer) {
+    return Buffer.from(data);
+  } else {
+    return Buffer.from(data.buffer, data.byteOffset, data.byteLength);
+  }
+};
 
 // only 'message' packets can contain binary, so the type prefix is not needed
-const encodeBuffer = (data, supportsBinary) => {
-    return supportsBinary ? data : "b" + data.toString("base64")
-}
+const encodeBuffer = (data: Buffer, supportsBinary: boolean): RawData => {
+  return supportsBinary ? data : "b" + data.toString("base64");
+};
+
+export default encodePacket;

packages/websocket/src/engine.io-parser/index.ts

@@ -1,42 +1,53 @@
-import { encodePacket } from "./encodePacket"
-import { decodePacket } from "./decodePacket"
+import encodePacket from "./encodePacket.js";
+import decodePacket from "./decodePacket.js";
+import { Packet, PacketType, RawData, BinaryType } from "./commons.js";
 
-const SEPARATOR = String.fromCharCode(30) // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text
+const SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text
 
-const encodePayload = (packets, callback) => {
-    // some packets may be added to the array while encoding, so the initial length must be saved
-    const length = packets.length
-    const encodedPackets = new Array(length)
-    let count = 0
+const encodePayload = (
+  packets: Packet[],
+  callback: (encodedPayload: string) => void
+) => {
+  // some packets may be added to the array while encoding, so the initial length must be saved
+  const length = packets.length;
+  const encodedPackets = new Array(length);
+  let count = 0;
 
-    packets.forEach((packet, i) => {
-        // force base64 encoding for binary packets
-        encodePacket(packet, false, encodedPacket => {
-            encodedPackets[i] = encodedPacket
-            if (++count === length) {
-                callback(encodedPackets.join(SEPARATOR))
-            }
-        })
-    })
-}
+  packets.forEach((packet, i) => {
+    // force base64 encoding for binary packets
+    encodePacket(packet, false, encodedPacket => {
+      encodedPackets[i] = encodedPacket;
+      if (++count === length) {
+        callback(encodedPackets.join(SEPARATOR));
+      }
+    });
+  });
+};
 
-const decodePayload = (encodedPayload, binaryType) => {
-    const encodedPackets = encodedPayload.split(SEPARATOR)
-    const packets = []
-    for (let i = 0; i < encodedPackets.length; i++) {
-        const decodedPacket = decodePacket(encodedPackets[i], binaryType)
-        packets.push(decodedPacket)
-        if (decodedPacket.type === "error") {
-            break
-        }
+const decodePayload = (
+  encodedPayload: string,
+  binaryType?: BinaryType
+): Packet[] => {
+  const encodedPackets = encodedPayload.split(SEPARATOR);
+  const packets = [];
+  for (let i = 0; i < encodedPackets.length; i++) {
+    const decodedPacket = decodePacket(encodedPackets[i], binaryType);
+    packets.push(decodedPacket);
+    if (decodedPacket.type === "error") {
+      break;
     }
-    return packets
-}
+  }
+  return packets;
+};
 
-export default {
-    protocol: 4,
-    encodePacket,
-    encodePayload,
-    decodePacket,
-    decodePayload
-}
+export const protocol = 4;
+export {
+  encodePacket,
+  encodePayload,
+  decodePacket,
+  decodePayload,
+  Packet,
+  PacketType,
+  RawData,
+  BinaryType
+};

packages/websocket/src/engine.io/index.ts

@@ -1,10 +1,45 @@
-/**
- * Module dependencies.
- */
+// import { createServer } from "http"
+import { Server, AttachOptions, ServerOptions } from "./server";
+import transports from "./transports/index";
+import * as parser from "../engine.io-parser";
 
-// const http = require("http")
-// const Server = require("./server")
-import { Server } from './server'
+// export { Server, transports, listen, attach, parser }
+export { Server, transports, attach, parser };
+export { AttachOptions, ServerOptions } from "./server";
+// export { uServer } from "./userver";
+export { Socket } from "./socket";
+export { Transport } from "./transport";
+export const protocol = parser.protocol;
+
+// /**
+//  * Creates an http.Server exclusively used for WS upgrades.
+//  *
+//  * @param {Number} port
+//  * @param {Function} callback
+//  * @param {Object} options
+//  * @return {Server} websocket.io server
+//  * @api public
+//  */
+//
+// function listen(port, options: AttachOptions & ServerOptions, fn) {
+//   if ("function" === typeof options) {
+//     fn = options;
+//     options = {};
+//   }
+
+//   const server = createServer(function(req, res) {
+//     res.writeHead(501);
+//     res.end("Not Implemented");
+//   });
+
+//   // create engine server
+//   const engine = attach(server, options);
+//   engine.httpServer = server;
+
+//   server.listen(port, fn);
+
+//   return engine;
+// }
 
 /**
  * Captures upgrade requests for a http.Server.
@@ -15,12 +50,8 @@ import { Server } from './server'
  * @api public
  */
 
-function attach(srv, options) {
-    const engine = new Server(options)
-    engine.attach(srv, options)
-    return engine
-}
-
-export = {
-    attach
+function attach(server, options: AttachOptions & ServerOptions) {
+  const engine = new Server(options);
+  engine.attach(server, options);
+  return engine;
 }

packages/websocket/src/engine.io/parser-v3/index.ts

@@ -0,0 +1,485 @@
+// imported from https://github.com/socketio/engine.io-parser/tree/2.2.x
+
+/**
+ * Module dependencies.
+ */
+
+ var utf8 = require('./utf8');
+
+ /**
+  * Current protocol version.
+  */
+ export const protocol = 3;
+
+ const hasBinary = (packets) => {
+   for (const packet of packets) {
+     if (packet.data instanceof ArrayBuffer || ArrayBuffer.isView(packet.data)) {
+       return true;
+     }
+   }
+   return false;
+ }
+
+ /**
+  * Packet types.
+  */
+
+ export const packets = {
+     open:     0    // non-ws
+   , close:    1    // non-ws
+   , ping:     2
+   , pong:     3
+   , message:  4
+   , upgrade:  5
+   , noop:     6
+ };
+
+ var packetslist = Object.keys(packets);
+
+ /**
+  * Premade error packet.
+  */
+
+ var err = { type: 'error', data: 'parser error' };
+
+ const EMPTY_BUFFER = Buffer.concat([]);
+
+ /**
+  * Encodes a packet.
+  *
+  *     <packet type id> [ <data> ]
+  *
+  * Example:
+  *
+  *     5hello world
+  *     3
+  *     4
+  *
+  * Binary is encoded in an identical principle
+  *
+  * @api private
+  */
+
+ export function encodePacket (packet, supportsBinary, utf8encode, callback) {
+   if (typeof supportsBinary === 'function') {
+     callback = supportsBinary;
+     supportsBinary = null;
+   }
+
+   if (typeof utf8encode === 'function') {
+     callback = utf8encode;
+     utf8encode = null;
+   }
+
+   if (Buffer.isBuffer(packet.data)) {
+     return encodeBuffer(packet, supportsBinary, callback);
+   } else if (packet.data && (packet.data.buffer || packet.data) instanceof ArrayBuffer) {
+     return encodeBuffer({ type: packet.type, data: arrayBufferToBuffer(packet.data) }, supportsBinary, callback);
+   }
+
+   // Sending data as a utf-8 string
+   var encoded = packets[packet.type];
+
+   // data fragment is optional
+   if (undefined !== packet.data) {
+     encoded += utf8encode ? utf8.encode(String(packet.data), { strict: false }) : String(packet.data);
+   }
+
+   return callback('' + encoded);
+ };
+
+ /**
+  * Encode Buffer data
+  */
+
+ function encodeBuffer(packet, supportsBinary, callback) {
+   if (!supportsBinary) {
+     return encodeBase64Packet(packet, callback);
+   }
+
+   var data = packet.data;
+   var typeBuffer = Buffer.allocUnsafe(1);
+   typeBuffer[0] = packets[packet.type];
+   return callback(Buffer.concat([typeBuffer, data]));
+ }
+
+ /**
+  * Encodes a packet with binary data in a base64 string
+  *
+  * @param {Object} packet, has `type` and `data`
+  * @return {String} base64 encoded message
+  */
+
+ export function encodeBase64Packet (packet, callback){
+   var data = Buffer.isBuffer(packet.data) ? packet.data : arrayBufferToBuffer(packet.data);
+   var message = 'b' + packets[packet.type];
+   message += data.toString('base64');
+   return callback(message);
+ };
+
+ /**
+  * Decodes a packet. Data also available as an ArrayBuffer if requested.
+  *
+  * @return {Object} with `type` and `data` (if any)
+  * @api private
+  */
+
+ export function decodePacket (data, binaryType, utf8decode) {
+   if (data === undefined) {
+     return err;
+   }
+
+   var type;
+
+   // String data
+   if (typeof data === 'string') {
+
+     type = data.charAt(0);
+
+     if (type === 'b') {
+       return decodeBase64Packet(data.substr(1), binaryType);
+     }
+
+     if (utf8decode) {
+       data = tryDecode(data);
+       if (data === false) {
+         return err;
+       }
+     }
+
+     if (Number(type) != type || !packetslist[type]) {
+       return err;
+     }
+
+     if (data.length > 1) {
+       return { type: packetslist[type], data: data.substring(1) };
+     } else {
+       return { type: packetslist[type] };
+     }
+   }
+
+   // Binary data
+   if (binaryType === 'arraybuffer') {
+     // wrap Buffer/ArrayBuffer data into an Uint8Array
+     var intArray = new Uint8Array(data);
+     type = intArray[0];
+     return { type: packetslist[type], data: intArray.buffer.slice(1) };
+   }
+
+   if (data instanceof ArrayBuffer) {
+     data = arrayBufferToBuffer(data);
+   }
+   type = data[0];
+   return { type: packetslist[type], data: data.slice(1) };
+ };
+
+ function tryDecode(data) {
+   try {
+     data = utf8.decode(data, { strict: false });
+   } catch (e) {
+     return false;
+   }
+   return data;
+ }
+
+ /**
+  * Decodes a packet encoded in a base64 string.
+  *
+  * @param {String} base64 encoded message
+  * @return {Object} with `type` and `data` (if any)
+  */
+
+ export function decodeBase64Packet (msg, binaryType) {
+   var type = packetslist[msg.charAt(0)];
+   var data = Buffer.from(msg.substr(1), 'base64');
+   if (binaryType === 'arraybuffer') {
+     var abv = new Uint8Array(data.length);
+     for (var i = 0; i < abv.length; i++){
+       abv[i] = data[i];
+     }
+     // @ts-ignore
+     data = abv.buffer;
+   }
+   return { type: type, data: data };
+ };
+
+ /**
+  * Encodes multiple messages (payload).
+  *
+  *     <length>:data
+  *
+  * Example:
+  *
+  *     11:hello world2:hi
+  *
+  * If any contents are binary, they will be encoded as base64 strings. Base64
+  * encoded strings are marked with a b before the length specifier
+  *
+  * @param {Array} packets
+  * @api private
+  */
+
+ export function encodePayload (packets, supportsBinary, callback) {
+   if (typeof supportsBinary === 'function') {
+     callback = supportsBinary;
+     supportsBinary = null;
+   }
+
+   if (supportsBinary && hasBinary(packets)) {
+     return encodePayloadAsBinary(packets, callback);
+   }
+
+   if (!packets.length) {
+     return callback('0:');
+   }
+
+   function encodeOne(packet, doneCallback) {
+     encodePacket(packet, supportsBinary, false, function(message) {
+       doneCallback(null, setLengthHeader(message));
+     });
+   }
+
+   map(packets, encodeOne, function(err, results) {
+     return callback(results.join(''));
+   });
+ };
+
+ function setLengthHeader(message) {
+   return message.length + ':' + message;
+ }
+
+ /**
+  * Async array map using after
+  */
+
+ function map(ary, each, done) {
+   const results = new Array(ary.length);
+   let count = 0;
+
+   for (let i = 0; i < ary.length; i++) {
+     each(ary[i], (error, msg) => {
+       results[i] = msg;
+       if (++count === ary.length) {
+         done(null, results);
+       }
+     });
+   }
+ }
+
+ /*
+  * Decodes data when a payload is maybe expected. Possible binary contents are
+  * decoded from their base64 representation
+  *
+  * @param {String} data, callback method
+  * @api public
+  */
+
+ export function decodePayload (data, binaryType, callback) {
+   if (typeof data !== 'string') {
+     return decodePayloadAsBinary(data, binaryType, callback);
+   }
+
+   if (typeof binaryType === 'function') {
+     callback = binaryType;
+     binaryType = null;
+   }
+
+   if (data === '') {
+     // parser error - ignoring payload
+     return callback(err, 0, 1);
+   }
+
+   var length = '', n, msg, packet;
+
+   for (var i = 0, l = data.length; i < l; i++) {
+     var chr = data.charAt(i);
+
+     if (chr !== ':') {
+       length += chr;
+       continue;
+     }
+
+     // @ts-ignore
+     if (length === '' || (length != (n = Number(length)))) {
+       // parser error - ignoring payload
+       return callback(err, 0, 1);
+     }
+
+     msg = data.substr(i + 1, n);
+
+     if (length != msg.length) {
+       // parser error - ignoring payload
+       return callback(err, 0, 1);
+     }
+
+     if (msg.length) {
+       packet = decodePacket(msg, binaryType, false);
+
+       if (err.type === packet.type && err.data === packet.data) {
+         // parser error in individual packet - ignoring payload
+         return callback(err, 0, 1);
+       }
+
+       var more = callback(packet, i + n, l);
+       if (false === more) return;
+     }
+
+     // advance cursor
+     i += n;
+     length = '';
+   }
+
+   if (length !== '') {
+     // parser error - ignoring payload
+     return callback(err, 0, 1);
+   }
+
+ };
+
+ /**
+  *
+  * Converts a buffer to a utf8.js encoded string
+  *
+  * @api private
+  */
+
+ function bufferToString(buffer) {
+   var str = '';
+   for (var i = 0, l = buffer.length; i < l; i++) {
+     str += String.fromCharCode(buffer[i]);
+   }
+   return str;
+ }
+
+ /**
+  *
+  * Converts a utf8.js encoded string to a buffer
+  *
+  * @api private
+  */
+
+ function stringToBuffer(string) {
+   var buf = Buffer.allocUnsafe(string.length);
+   for (var i = 0, l = string.length; i < l; i++) {
+     buf.writeUInt8(string.charCodeAt(i), i);
+   }
+   return buf;
+ }
+
+ /**
+  *
+  * Converts an ArrayBuffer to a Buffer
+  *
+  * @api private
+  */
+
+ function arrayBufferToBuffer(data) {
+   // data is either an ArrayBuffer or ArrayBufferView.
+   var length = data.byteLength || data.length;
+   var offset = data.byteOffset || 0;
+
+   return Buffer.from(data.buffer || data, offset, length);
+ }
+
+ /**
+  * Encodes multiple messages (payload) as binary.
+  *
+  * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number
+  * 255><data>
+  *
+  * Example:
+  * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers
+  *
+  * @param {Array} packets
+  * @return {Buffer} encoded payload
+  * @api private
+  */
+
+ export function encodePayloadAsBinary (packets, callback) {
+   if (!packets.length) {
+     return callback(EMPTY_BUFFER);
+   }
+
+   map(packets, encodeOneBinaryPacket, function(err, results) {
+     return callback(Buffer.concat(results));
+   });
+ };
+
+ function encodeOneBinaryPacket(p, doneCallback) {
+
+   function onBinaryPacketEncode(packet) {
+
+     var encodingLength = '' + packet.length;
+     var sizeBuffer;
+
+     if (typeof packet === 'string') {
+       sizeBuffer = Buffer.allocUnsafe(encodingLength.length + 2);
+       sizeBuffer[0] = 0; // is a string (not true binary = 0)
+       for (var i = 0; i < encodingLength.length; i++) {
+         sizeBuffer[i + 1] = parseInt(encodingLength[i], 10);
+       }
+       sizeBuffer[sizeBuffer.length - 1] = 255;
+       return doneCallback(null, Buffer.concat([sizeBuffer, stringToBuffer(packet)]));
+     }
+
+     sizeBuffer = Buffer.allocUnsafe(encodingLength.length + 2);
+     sizeBuffer[0] = 1; // is binary (true binary = 1)
+     for (var i = 0; i < encodingLength.length; i++) {
+       sizeBuffer[i + 1] = parseInt(encodingLength[i], 10);
+     }
+     sizeBuffer[sizeBuffer.length - 1] = 255;
+
+     doneCallback(null, Buffer.concat([sizeBuffer, packet]));
+   }
+
+   encodePacket(p, true, true, onBinaryPacketEncode);
+
+ }
+
+
+ /*
+  * Decodes data when a payload is maybe expected. Strings are decoded by
+  * interpreting each byte as a key code for entries marked to start with 0. See
+  * description of encodePayloadAsBinary
+
+  * @param {Buffer} data, callback method
+  * @api public
+  */
+
+ export function decodePayloadAsBinary (data, binaryType, callback) {
+   if (typeof binaryType === 'function') {
+     callback = binaryType;
+     binaryType = null;
+   }
+
+   var bufferTail = data;
+   var buffers = [];
+   var i;
+
+   while (bufferTail.length > 0) {
+     var strLen = '';
+     var isString = bufferTail[0] === 0;
+     for (i = 1; ; i++) {
+       if (bufferTail[i] === 255)  break;
+       // 310 = char length of Number.MAX_VALUE
+       if (strLen.length > 310) {
+         return callback(err, 0, 1);
+       }
+       strLen += '' + bufferTail[i];
+     }
+     bufferTail = bufferTail.slice(strLen.length + 1);
+
+     var msgLength = parseInt(strLen, 10);
+
+     var msg = bufferTail.slice(1, msgLength + 1);
+     if (isString) msg = bufferToString(msg);
+     buffers.push(msg);
+     bufferTail = bufferTail.slice(msgLength + 1);
+   }
+
+   var total = buffers.length;
+   for (i = 0; i < total; i++) {
+     var buffer = buffers[i];
+     callback(decodePacket(buffer, binaryType, true), i, total);
+   }
+ };

packages/websocket/src/engine.io/parser-v3/utf8.ts

@@ -0,0 +1,210 @@
+/*! https://mths.be/utf8js v2.1.2 by @mathias */
+
+var stringFromCharCode = String.fromCharCode;
+
+// Taken from https://mths.be/punycode
+function ucs2decode(string) {
+	var output = [];
+	var counter = 0;
+	var length = string.length;
+	var value;
+	var extra;
+	while (counter < length) {
+		value = string.charCodeAt(counter++);
+		if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
+			// high surrogate, and there is a next character
+			extra = string.charCodeAt(counter++);
+			if ((extra & 0xFC00) == 0xDC00) { // low surrogate
+				output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
+			} else {
+				// unmatched surrogate; only append this code unit, in case the next
+				// code unit is the high surrogate of a surrogate pair
+				output.push(value);
+				counter--;
+			}
+		} else {
+			output.push(value);
+		}
+	}
+	return output;
+}
+
+// Taken from https://mths.be/punycode
+function ucs2encode(array) {
+	var length = array.length;
+	var index = -1;
+	var value;
+	var output = '';
+	while (++index < length) {
+		value = array[index];
+		if (value > 0xFFFF) {
+			value -= 0x10000;
+			output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
+			value = 0xDC00 | value & 0x3FF;
+		}
+		output += stringFromCharCode(value);
+	}
+	return output;
+}
+
+function checkScalarValue(codePoint, strict) {
+	if (codePoint >= 0xD800 && codePoint <= 0xDFFF) {
+		if (strict) {
+			throw Error(
+				'Lone surrogate U+' + codePoint.toString(16).toUpperCase() +
+				' is not a scalar value'
+			);
+		}
+		return false;
+	}
+	return true;
+}
+/*--------------------------------------------------------------------------*/
+
+function createByte(codePoint, shift) {
+	return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);
+}
+
+function encodeCodePoint(codePoint, strict) {
+	if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence
+		return stringFromCharCode(codePoint);
+	}
+	var symbol = '';
+	if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence
+		symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);
+	}
+	else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence
+		if (!checkScalarValue(codePoint, strict)) {
+			codePoint = 0xFFFD;
+		}
+		symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);
+		symbol += createByte(codePoint, 6);
+	}
+	else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence
+		symbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);
+		symbol += createByte(codePoint, 12);
+		symbol += createByte(codePoint, 6);
+	}
+	symbol += stringFromCharCode((codePoint & 0x3F) | 0x80);
+	return symbol;
+}
+
+function utf8encode(string, opts) {
+	opts = opts || {};
+	var strict = false !== opts.strict;
+
+	var codePoints = ucs2decode(string);
+	var length = codePoints.length;
+	var index = -1;
+	var codePoint;
+	var byteString = '';
+	while (++index < length) {
+		codePoint = codePoints[index];
+		byteString += encodeCodePoint(codePoint, strict);
+	}
+	return byteString;
+}
+
+/*--------------------------------------------------------------------------*/
+
+function readContinuationByte() {
+	if (byteIndex >= byteCount) {
+		throw Error('Invalid byte index');
+	}
+
+	var continuationByte = byteArray[byteIndex] & 0xFF;
+	byteIndex++;
+
+	if ((continuationByte & 0xC0) == 0x80) {
+		return continuationByte & 0x3F;
+	}
+
+	// If we end up here, it’s not a continuation byte
+	throw Error('Invalid continuation byte');
+}
+
+function decodeSymbol(strict) {
+	var byte1;
+	var byte2;
+	var byte3;
+	var byte4;
+	var codePoint;
+
+	if (byteIndex > byteCount) {
+		throw Error('Invalid byte index');
+	}
+
+	if (byteIndex == byteCount) {
+		return false;
+	}
+
+	// Read first byte
+	byte1 = byteArray[byteIndex] & 0xFF;
+	byteIndex++;
+
+	// 1-byte sequence (no continuation bytes)
+	if ((byte1 & 0x80) == 0) {
+		return byte1;
+	}
+
+	// 2-byte sequence
+	if ((byte1 & 0xE0) == 0xC0) {
+		byte2 = readContinuationByte();
+		codePoint = ((byte1 & 0x1F) << 6) | byte2;
+		if (codePoint >= 0x80) {
+			return codePoint;
+		} else {
+			throw Error('Invalid continuation byte');
+		}
+	}
+
+	// 3-byte sequence (may include unpaired surrogates)
+	if ((byte1 & 0xF0) == 0xE0) {
+		byte2 = readContinuationByte();
+		byte3 = readContinuationByte();
+		codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;
+		if (codePoint >= 0x0800) {
+			return checkScalarValue(codePoint, strict) ? codePoint : 0xFFFD;
+		} else {
+			throw Error('Invalid continuation byte');
+		}
+	}
+
+	// 4-byte sequence
+	if ((byte1 & 0xF8) == 0xF0) {
+		byte2 = readContinuationByte();
+		byte3 = readContinuationByte();
+		byte4 = readContinuationByte();
+		codePoint = ((byte1 & 0x07) << 0x12) | (byte2 << 0x0C) |
+			(byte3 << 0x06) | byte4;
+		if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
+			return codePoint;
+		}
+	}
+
+	throw Error('Invalid UTF-8 detected');
+}
+
+var byteArray;
+var byteCount;
+var byteIndex;
+function utf8decode(byteString, opts) {
+	opts = opts || {};
+	var strict = false !== opts.strict;
+
+	byteArray = ucs2decode(byteString);
+	byteCount = byteArray.length;
+	byteIndex = 0;
+	var codePoints = [];
+	var tmp;
+	while ((tmp = decodeSymbol(strict)) !== false) {
+		codePoints.push(tmp);
+	}
+	return ucs2encode(codePoints);
+}
+
+module.exports = {
+	version: '2.1.2',
+	encode: utf8encode,
+	decode: utf8decode
+};

packages/websocket/src/engine.io/transport.ts

@@ -1,121 +1,145 @@
-import { EventEmitter } from 'events'
-import parser_v4 from "../engine.io-parser"
-import type { WebSocketClient } from '../server/client'
+import { EventEmitter } from "events";
+import * as parser_v4 from "../engine.io-parser";
+import * as parser_v3 from "./parser-v3";
+// import debugModule from "debug"
+// import { IncomingMessage } from "http"
+import { Packet } from "../engine.io-parser";
+
+// const debug = debugModule("engine:transport")
+const debug = require("../debug")("engine:transport");
+
 /**
  * Noop function.
  *
  * @api private
  */
 
-function noop() { }
+function noop() {}
 
 export abstract class Transport extends EventEmitter {
-    public sid: string
-    public req /**http.IncomingMessage */
-    public socket: WebSocketClient
-    public writable: boolean
-    public readyState: string
-    public discarded: boolean
-    public protocol: Number
-    public parser: any
-    public perMessageDeflate: any
-    public supportsBinary: boolean = false
+  public sid: string;
+  public writable: boolean;
+  public protocol: number;
 
-    /**
-     * Transport constructor.
-     *
-     * @param {http.IncomingMessage} request
-     * @api public
-     */
-    constructor(req) {
-        super()
-        this.readyState = "open"
-        this.discarded = false
-        this.protocol = req._query.EIO === "4" ? 4 : 3 // 3rd revision by default
-        this.parser = parser_v4//= this.protocol === 4 ? parser_v4 : parser_v3
+  protected _readyState: string;
+  protected discarded: boolean;
+  protected parser: any;
+  // protected req: IncomingMessage & { cleanup: Function }
+  protected req: { cleanup: Function };
+  protected supportsBinary: boolean;
+
+  get readyState() {
+    return this._readyState;
+  }
+
+  set readyState(state) {
+    debug(
+      "readyState updated from %s to %s (%s)",
+      this._readyState,
+      state,
+      this.name
+    );
+    this._readyState = state;
+  }
+
+  /**
+   * Transport constructor.
+   *
+   * @param {http.IncomingMessage} request
+   * @api public
+   */
+  constructor(req) {
+    super();
+    this.readyState = "open";
+    this.discarded = false;
+    this.protocol = req._query.EIO === "4" ? 4 : 3; // 3rd revision by default
+    this.parser = this.protocol === 4 ? parser_v4 : parser_v3;
+  }
+
+  /**
+   * Flags the transport as discarded.
+   *
+   * @api private
+   */
+  discard() {
+    this.discarded = true;
+  }
+
+  /**
+   * Called with an incoming HTTP request.
+   *
+   * @param {http.IncomingMessage} request
+   * @api protected
+   */
+  protected onRequest(req) {
+    debug("setting request");
+    this.req = req;
+  }
+
+  /**
+   * Closes the transport.
+   *
+   * @api private
+   */
+  close(fn?) {
+    if ("closed" === this.readyState || "closing" === this.readyState) return;
+
+    this.readyState = "closing";
+    this.doClose(fn || noop);
+  }
+
+  /**
+   * Called with a transport error.
+   *
+   * @param {String} message error
+   * @param {Object} error description
+   * @api protected
+   */
+  protected onError(msg: string, desc?) {
+    if (this.listeners("error").length) {
+      const err = new Error(msg);
+      // @ts-ignore
+      err.type = "TransportError";
+      // @ts-ignore
+      err.description = desc;
+      this.emit("error", err);
+    } else {
+      debug("ignored transport error %s (%s)", msg, desc);
     }
+  }
 
-    /**
-     * Flags the transport as discarded.
-     *
-     * @api private
-     */
-    discard() {
-        this.discarded = true
-    }
+  /**
+   * Called with parsed out a packets from the data stream.
+   *
+   * @param {Object} packet
+   * @api protected
+   */
+  protected onPacket(packet: Packet) {
+    this.emit("packet", packet);
+  }
 
-    /**
-     * Called with an incoming HTTP request.
-     *
-     * @param {http.IncomingMessage} request
-     * @api private
-     */
-    onRequest(req) {
-        console.debug(`engine.io transport ${this.socket.id} setting request`, JSON.stringify(req))
-        this.req = req
-    }
+  /**
+   * Called with the encoded packet data.
+   *
+   * @param {String} data
+   * @api protected
+   */
+  protected onData(data) {
+    this.onPacket(this.parser.decodePacket(data));
+  }
 
-    /**
-     * Closes the transport.
-     *
-     * @api private
-     */
-    close(fn?) {
-        if ("closed" === this.readyState || "closing" === this.readyState) return
+  /**
+   * Called upon transport close.
+   *
+   * @api protected
+   */
+  protected onClose() {
+    this.readyState = "closed";
+    this.emit("close");
+  }
 
-        this.readyState = "closing"
-        this.doClose(fn || noop)
-    }
-
-    /**
-     * Called with a transport error.
-     *
-     * @param {String} message error
-     * @param {Object} error description
-     * @api private
-     */
-    onError(msg: string, desc?: string) {
-        if (this.listeners("error").length) {
-            const err: any = new Error(msg)
-            err.type = "TransportError"
-            err.description = desc
-            this.emit("error", err)
-        } else {
-            console.debug(`ignored transport error ${msg} (${desc})`)
-        }
-    }
-
-    /**
-     * Called with parsed out a packets from the data stream.
-     *
-     * @param {Object} packet
-     * @api private
-     */
-    onPacket(packet) {
-        this.emit("packet", packet)
-    }
-
-    /**
-     * Called with the encoded packet data.
-     *
-     * @param {String} data
-     * @api private
-     */
-    onData(data) {
-        this.onPacket(this.parser.decodePacket(data))
-    }
-
-    /**
-     * Called upon transport close.
-     *
-     * @api private
-     */
-    onClose() {
-        this.readyState = "closed"
-        this.emit("close")
-    }
-    abstract get supportsFraming()
-    abstract get name()
-    abstract send(...args: any[])
-    abstract doClose(d: Function)
+  abstract get supportsFraming();
+  abstract get name();
+  abstract send(packets);
+  abstract doClose(fn?);
 }

packages/websocket/src/engine.io/transports/index.ts

@@ -1,3 +1,24 @@
+// import { Polling as XHR } from "./polling"
+// import { JSONP } from "./polling-jsonp"
+import { WebSocket } from "./websocket";
+
 export default {
-    websocket: require("./websocket").WebSocket
-}
+  // polling: polling,
+  websocket: WebSocket,
+};
+
+// /**
+//  * Polling polymorphic constructor.
+//  *
+//  * @api private
+//  */
+
+// function polling(req) {
+//     if ("string" === typeof req._query.j) {
+//         return new JSONP(req)
+//     } else {
+//         return new XHR(req)
+//     }
+// }
+
+// polling.upgradesTo = ["websocket"]

packages/websocket/src/engine.io/transports/websocket.ts

@@ -1,116 +1,111 @@
-import { Transport } from '../transport'
-// const debug = require("debug")("engine:ws")
+import { Transport } from "../transport";
+// import debugModule from "debug";
+
+const debug = require("../../debug")("engine:ws");
 
 export class WebSocket extends Transport {
-    public perMessageDeflate: any
+  protected perMessageDeflate: any;
+  private socket: any;
 
-    /**
-     * WebSocket transport
-     *
-     * @param {http.IncomingMessage}
-     * @api public
-     */
-    constructor(req) {
-        super(req)
-        this.socket = req.websocket
-        this.socket.on("message", this.onData.bind(this))
-        this.socket.once("close", this.onClose.bind(this))
-        this.socket.on("error", this.onError.bind(this))
-        this.writable = true
-        this.perMessageDeflate = null
+  /**
+   * WebSocket transport
+   *
+   * @param {http.IncomingMessage}
+   * @api public
+   */
+  constructor(req) {
+    super(req);
+    this.socket = req.websocket;
+    this.socket.on("message", (data, isBinary) => {
+      const message = isBinary ? data : data.toString();
+      debug('received "%s"', message);
+      super.onData(message);
+    });
+    this.socket.once("close", this.onClose.bind(this));
+    this.socket.on("error", this.onError.bind(this));
+    this.writable = true;
+    this.perMessageDeflate = null;
+  }
+
+  /**
+   * Transport name
+   *
+   * @api public
+   */
+  get name() {
+    return "websocket";
+  }
+
+  /**
+   * Advertise upgrade support.
+   *
+   * @api public
+   */
+  get handlesUpgrades() {
+    return true;
+  }
+
+  /**
+   * Advertise framing support.
+   *
+   * @api public
+   */
+  get supportsFraming() {
+    return true;
+  }
+
+  /**
+   * Writes a packet payload.
+   *
+   * @param {Array} packets
+   * @api private
+   */
+  send(packets) {
+    const packet = packets.shift();
+    if (typeof packet === "undefined") {
+      this.writable = true;
+      this.emit("drain");
+      return;
     }
 
-    /**
-     * Transport name
-     *
-     * @api public
-     */
-    get name() {
-        return "websocket"
+    // always creates a new object since ws modifies it
+    const opts: { compress?: boolean } = {};
+    if (packet.options) {
+      opts.compress = packet.options.compress;
     }
 
-    /**
-     * Advertise upgrade support.
-     *
-     * @api public
-     */
-    get handlesUpgrades() {
-        return true
-    }
-
-    /**
-     * Advertise framing support.
-     *
-     * @api public
-     */
-    get supportsFraming() {
-        return true
-    }
-
-    /**
-     * Processes the incoming data.
-     *
-     * @param {String} encoded packet
-     * @api private
-     */
-    onData(data) {
-        // debug('received "%s"', data)
-        super.onData(data)
-    }
-
-    /**
-     * Writes a packet payload.
-     *
-     * @param {Array} packets
-     * @api private
-     */
-    send(packets) {
-        // console.log('WebSocket send packets', JSON.stringify(packets))
-        const packet = packets.shift()
-        if (typeof packet === "undefined") {
-            this.writable = true
-            this.emit("drain")
-            return
+    const send = data => {
+      if (this.perMessageDeflate) {
+        const len =
+          "string" === typeof data ? Buffer.byteLength(data) : data.length;
+        if (len < this.perMessageDeflate.threshold) {
+          opts.compress = false;
         }
+      }
+      debug('writing "%s"', data);
+      this.writable = false;
 
-        // always creates a new object since ws modifies it
-        const opts: any = {}
-        if (packet.options) {
-            opts.compress = packet.options.compress
-        }
+      this.socket.send(data, opts, err => {
+        if (err) return this.onError("write error", err.stack);
+        this.send(packets);
+      });
+    };
 
-        const send = data => {
-            if (this.perMessageDeflate) {
-                const len =
-                    "string" === typeof data ? Buffer.byteLength(data) : data.length
-                if (len < this.perMessageDeflate.threshold) {
-                    opts.compress = false
-                }
-            }
-            console.trace('writing', data)
-            this.writable = false
-
-            this.socket.send(data, opts, err => {
-                if (err) return this.onError("write error", err.stack)
-                this.send(packets)
-            })
-        }
-
-        if (packet.options && typeof packet.options.wsPreEncoded === "string") {
-            send(packet.options.wsPreEncoded)
-        } else {
-            this.parser.encodePacket(packet, this.supportsBinary, send)
-        }
+    if (packet.options && typeof packet.options.wsPreEncoded === "string") {
+      send(packet.options.wsPreEncoded);
+    } else {
+      this.parser.encodePacket(packet, this.supportsBinary, send);
     }
+  }
 
-    /**
-     * Closes the transport.
-     *
-     * @api private
-     */
-    doClose(fn) {
-        // debug("closing")
-        this.socket.close()
-        fn && fn()
-    }
+  /**
+   * Closes the transport.
+   *
+   * @api private
+   */
+  doClose(fn) {
+    debug("closing");
+    this.socket.close();
+    fn && fn();
+  }
 }

packages/websocket/src/socket.io-adapter/contrib/yeast.ts

@@ -0,0 +1,65 @@
+// imported from https://github.com/unshiftio/yeast
+"use strict";
+
+const alphabet =
+    "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_".split(
+      ""
+    ),
+  length = 64,
+  map = {};
+let seed = 0,
+  i = 0,
+  prev;
+
+/**
+ * Return a string representing the specified number.
+ *
+ * @param {Number} num The number to convert.
+ * @returns {String} The string representation of the number.
+ * @api public
+ */
+export function encode(num) {
+  let encoded = "";
+
+  do {
+    encoded = alphabet[num % length] + encoded;
+    num = Math.floor(num / length);
+  } while (num > 0);
+
+  return encoded;
+}
+
+/**
+ * Return the integer value specified by the given string.
+ *
+ * @param {String} str The string to convert.
+ * @returns {Number} The integer value represented by the string.
+ * @api public
+ */
+export function decode(str) {
+  let decoded = 0;
+
+  for (i = 0; i < str.length; i++) {
+    decoded = decoded * length + map[str.charAt(i)];
+  }
+
+  return decoded;
+}
+
+/**
+ * Yeast: A tiny growing id generator.
+ *
+ * @returns {String} A unique id.
+ * @api public
+ */
+export function yeast() {
+  const now = encode(+new Date());
+
+  if (now !== prev) return (seed = 0), (prev = now);
+  return now + "." + encode(seed++);
+}
+
+//
+// Map each character to its index.
+//
+for (; i < length; i++) map[alphabet[i]] = i;

packages/websocket/src/socket.io-adapter/index.ts

@@ -1,279 +1,507 @@
-import { EventEmitter } from "events"
+import { EventEmitter } from "events";
+import { yeast } from "./contrib/yeast";
+// import WebSocket = require("ws");
 
-export type SocketId = string
-export type Room = string
+// const canPreComputeFrame = typeof WebSocket?.Sender?.frame === "function";
+
+/**
+ * A public ID, sent by the server at the beginning of the Socket.IO session and which can be used for private messaging
+ */
+export type SocketId = string;
+/**
+ * A private ID, sent by the server at the beginning of the Socket.IO session and used for connection state recovery
+ * upon reconnection
+ */
+export type PrivateSessionId = string;
+
+// we could extend the Room type to "string | number", but that would be a breaking change
+// related: https://github.com/socketio/socket.io-redis-adapter/issues/418
+export type Room = string;
 
 export interface BroadcastFlags {
-    volatile?: boolean
-    compress?: boolean
-    local?: boolean
-    broadcast?: boolean
-    binary?: boolean
+  volatile?: boolean;
+  compress?: boolean;
+  local?: boolean;
+  broadcast?: boolean;
+  binary?: boolean;
+  timeout?: number;
 }
 
 export interface BroadcastOptions {
-    rooms: Set<Room>
-    except?: Set<SocketId>
-    flags?: BroadcastFlags
+  rooms: Set<Room>;
+  except?: Set<Room>;
+  flags?: BroadcastFlags;
 }
 
+interface SessionToPersist {
+  sid: SocketId;
+  pid: PrivateSessionId;
+  rooms: Room[];
+  data: unknown;
+}
+
+export type Session = SessionToPersist & { missedPackets: unknown[][] };
+
 export class Adapter extends EventEmitter {
-    public rooms: Map<Room, Set<SocketId>> = new Map();
-    public sids: Map<SocketId, Set<Room>> = new Map();
-    private readonly encoder
+  public rooms: Map<Room, Set<SocketId>> = new Map();
+  public sids: Map<SocketId, Set<Room>> = new Map();
+  private readonly encoder;
 
-    /**
-     * In-memory adapter constructor.
-     *
-     * @param {Namespace} nsp
-     */
-    constructor(readonly nsp: any) {
-        super()
-        this.encoder = nsp.server.encoder
+  /**
+   * In-memory adapter constructor.
+   *
+   * @param {Namespace} nsp
+   */
+  constructor(readonly nsp: any) {
+    super();
+    this.encoder = nsp.server.encoder;
+  }
+
+  /**
+   * To be overridden
+   */
+  public init(): Promise<void> | void {}
+
+  /**
+   * To be overridden
+   */
+  public close(): Promise<void> | void {}
+
+  /**
+   * Returns the number of Socket.IO servers in the cluster
+   *
+   * @public
+   */
+  public serverCount(): Promise<number> {
+    return Promise.resolve(1);
+  }
+
+  /**
+   * Adds a socket to a list of room.
+   *
+   * @param {SocketId}  id      the socket id
+   * @param {Set<Room>} rooms   a set of rooms
+   * @public
+   */
+  public addAll(id: SocketId, rooms: Set<Room>): Promise<void> | void {
+    if (!this.sids.has(id)) {
+      this.sids.set(id, new Set());
     }
 
-    /**
-     * To be overridden
-     */
-    public init(): Promise<void> | void { }
+    for (const room of rooms) {
+      this.sids.get(id).add(room);
 
-    /**
-     * To be overridden
-     */
-    public close(): Promise<void> | void { }
+      if (!this.rooms.has(room)) {
+        this.rooms.set(room, new Set());
+        this.emit("create-room", room);
+      }
+      if (!this.rooms.get(room).has(id)) {
+        this.rooms.get(room).add(id);
+        this.emit("join-room", room, id);
+      }
+    }
+  }
 
-    /**
-     * Adds a socket to a list of room.
-     *
-     * @param {SocketId}  id      the socket id
-     * @param {Set<Room>} rooms   a set of rooms
-     * @public
-     */
-    public addAll(id: SocketId, rooms: Set<Room>): Promise<void> | void {
-        if (!this.sids.has(id)) {
-            this.sids.set(id, new Set())
-        }
-
-        for (const room of rooms) {
-            this.sids.get(id).add(room)
-
-            if (!this.rooms.has(room)) {
-                this.rooms.set(room, new Set())
-                this.emit("create-room", room)
-            }
-            if (!this.rooms.get(room).has(id)) {
-                this.rooms.get(room).add(id)
-                this.emit("join-room", room, id)
-            }
-        }
+  /**
+   * Removes a socket from a room.
+   *
+   * @param {SocketId} id     the socket id
+   * @param {Room}     room   the room name
+   */
+  public del(id: SocketId, room: Room): Promise<void> | void {
+    if (this.sids.has(id)) {
+      this.sids.get(id).delete(room);
     }
 
-    /**
-     * Removes a socket from a room.
-     *
-     * @param {SocketId} id     the socket id
-     * @param {Room}     room   the room name
-     */
-    public del(id: SocketId, room: Room): Promise<void> | void {
-        if (this.sids.has(id)) {
-            this.sids.get(id).delete(room)
-        }
+    this._del(room, id);
+  }
 
-        this._del(room, id)
+  private _del(room: Room, id: SocketId) {
+    const _room = this.rooms.get(room);
+    if (_room != null) {
+      const deleted = _room.delete(id);
+      if (deleted) {
+        this.emit("leave-room", room, id);
+      }
+      if (_room.size === 0 && this.rooms.delete(room)) {
+        this.emit("delete-room", room);
+      }
+    }
+  }
+
+  /**
+   * Removes a socket from all rooms it's joined.
+   *
+   * @param {SocketId} id   the socket id
+   */
+  public delAll(id: SocketId): void {
+    if (!this.sids.has(id)) {
+      return;
     }
 
-    private _del(room, id) {
+    for (const room of this.sids.get(id)) {
+      this._del(room, id);
+    }
+
+    this.sids.delete(id);
+  }
+
+  /**
+   * Broadcasts a packet.
+   *
+   * Options:
+   *  - `flags` {Object} flags for this packet
+   *  - `except` {Array} sids that should be excluded
+   *  - `rooms` {Array} list of rooms to broadcast to
+   *
+   * @param {Object} packet   the packet object
+   * @param {Object} opts     the options
+   * @public
+   */
+  public broadcast(packet: any, opts: BroadcastOptions): void {
+    const flags = opts.flags || {};
+    const packetOpts = {
+      preEncoded: true,
+      volatile: flags.volatile,
+      compress: flags.compress,
+    };
+
+    packet.nsp = this.nsp.name;
+    const encodedPackets = this._encode(packet, packetOpts);
+
+    this.apply(opts, (socket) => {
+      if (typeof socket.notifyOutgoingListeners === "function") {
+        socket.notifyOutgoingListeners(packet);
+      }
+
+      socket.client.writeToEngine(encodedPackets, packetOpts);
+    });
+  }
+
+  /**
+   * Broadcasts a packet and expects multiple acknowledgements.
+   *
+   * Options:
+   *  - `flags` {Object} flags for this packet
+   *  - `except` {Array} sids that should be excluded
+   *  - `rooms` {Array} list of rooms to broadcast to
+   *
+   * @param {Object} packet   the packet object
+   * @param {Object} opts     the options
+   * @param clientCountCallback - the number of clients that received the packet
+   * @param ack                 - the callback that will be called for each client response
+   *
+   * @public
+   */
+  public broadcastWithAck(
+    packet: any,
+    opts: BroadcastOptions,
+    clientCountCallback: (clientCount: number) => void,
+    ack: (...args: any[]) => void
+  ) {
+    const flags = opts.flags || {};
+    const packetOpts = {
+      preEncoded: true,
+      volatile: flags.volatile,
+      compress: flags.compress,
+    };
+
+    packet.nsp = this.nsp.name;
+    // we can use the same id for each packet, since the _ids counter is common (no duplicate)
+    packet.id = this.nsp._ids++;
+
+    const encodedPackets = this._encode(packet, packetOpts);
+
+    let clientCount = 0;
+
+    this.apply(opts, (socket) => {
+      // track the total number of acknowledgements that are expected
+      clientCount++;
+      // call the ack callback for each client response
+      socket.acks.set(packet.id, ack);
+
+      if (typeof socket.notifyOutgoingListeners === "function") {
+        socket.notifyOutgoingListeners(packet);
+      }
+
+      socket.client.writeToEngine(encodedPackets, packetOpts);
+    });
+
+    clientCountCallback(clientCount);
+  }
+
+  private _encode(packet: unknown, packetOpts: Record<string, unknown>) {
+    const encodedPackets = this.encoder.encode(packet);
+
+    // if (
+    //   canPreComputeFrame &&
+    //   encodedPackets.length === 1 &&
+    //   typeof encodedPackets[0] === "string"
+    // ) {
+    //   // "4" being the "message" packet type in the Engine.IO protocol
+    //   const data = Buffer.from("4" + encodedPackets[0]);
+    //   // see https://github.com/websockets/ws/issues/617#issuecomment-283002469
+    //   packetOpts.wsPreEncodedFrame = WebSocket.Sender.frame(data, {
+    //     readOnly: false,
+    //     mask: false,
+    //     rsv1: false,
+    //     opcode: 1,
+    //     fin: true,
+    //   });
+    // }
+
+    return encodedPackets;
+  }
+
+  /**
+   * Gets a list of sockets by sid.
+   *
+   * @param {Set<Room>} rooms   the explicit set of rooms to check.
+   */
+  public sockets(rooms: Set<Room>): Promise<Set<SocketId>> {
+    const sids = new Set<SocketId>();
+
+    this.apply({ rooms }, (socket) => {
+      sids.add(socket.id);
+    });
+
+    return Promise.resolve(sids);
+  }
+
+  /**
+   * Gets the list of rooms a given socket has joined.
+   *
+   * @param {SocketId} id   the socket id
+   */
+  public socketRooms(id: SocketId): Set<Room> | undefined {
+    return this.sids.get(id);
+  }
+
+  /**
+   * Returns the matching socket instances
+   *
+   * @param opts - the filters to apply
+   */
+  public fetchSockets(opts: BroadcastOptions): Promise<any[]> {
+    const sockets = [];
+
+    this.apply(opts, (socket) => {
+      sockets.push(socket);
+    });
+
+    return Promise.resolve(sockets);
+  }
+
+  /**
+   * Makes the matching socket instances join the specified rooms
+   *
+   * @param opts - the filters to apply
+   * @param rooms - the rooms to join
+   */
+  public addSockets(opts: BroadcastOptions, rooms: Room[]): void {
+    this.apply(opts, (socket) => {
+      socket.join(rooms);
+    });
+  }
+
+  /**
+   * Makes the matching socket instances leave the specified rooms
+   *
+   * @param opts - the filters to apply
+   * @param rooms - the rooms to leave
+   */
+  public delSockets(opts: BroadcastOptions, rooms: Room[]): void {
+    this.apply(opts, (socket) => {
+      rooms.forEach((room) => socket.leave(room));
+    });
+  }
+
+  /**
+   * Makes the matching socket instances disconnect
+   *
+   * @param opts - the filters to apply
+   * @param close - whether to close the underlying connection
+   */
+  public disconnectSockets(opts: BroadcastOptions, close: boolean): void {
+    this.apply(opts, (socket) => {
+      socket.disconnect(close);
+    });
+  }
+
+  private apply(opts: BroadcastOptions, callback: (socket) => void): void {
+    const rooms = opts.rooms;
+    const except = this.computeExceptSids(opts.except);
+
+    if (rooms.size) {
+      const ids = new Set();
+      for (const room of rooms) {
+        if (!this.rooms.has(room)) continue;
+
+        for (const id of this.rooms.get(room)) {
+          if (ids.has(id) || except.has(id)) continue;
+          const socket = this.nsp.sockets.get(id);
+          if (socket) {
+            callback(socket);
+            ids.add(id);
+          }
+        }
+      }
+    } else {
+      for (const [id] of this.sids) {
+        if (except.has(id)) continue;
+        const socket = this.nsp.sockets.get(id);
+        if (socket) callback(socket);
+      }
+    }
+  }
+
+  private computeExceptSids(exceptRooms?: Set<Room>) {
+    const exceptSids = new Set();
+    if (exceptRooms && exceptRooms.size > 0) {
+      for (const room of exceptRooms) {
         if (this.rooms.has(room)) {
-            const deleted = this.rooms.get(room).delete(id)
-            if (deleted) {
-                this.emit("leave-room", room, id)
-            }
-            if (this.rooms.get(room).size === 0) {
-                this.rooms.delete(room)
-                this.emit("delete-room", room)
-            }
+          this.rooms.get(room).forEach((sid) => exceptSids.add(sid));
         }
+      }
     }
+    return exceptSids;
+  }
 
-    /**
-     * Removes a socket from all rooms it's joined.
-     *
-     * @param {SocketId} id   the socket id
-     */
-    public delAll(id: SocketId): void {
-        if (!this.sids.has(id)) {
-            return
-        }
+  /**
+   * Send a packet to the other Socket.IO servers in the cluster
+   * @param packet - an array of arguments, which may include an acknowledgement callback at the end
+   */
+  public serverSideEmit(packet: any[]): void {
+    console.warn(
+      "this adapter does not support the serverSideEmit() functionality"
+    );
+  }
 
-        for (const room of this.sids.get(id)) {
-            this._del(room, id)
-        }
+  /**
+   * Save the client session in order to restore it upon reconnection.
+   */
+  public persistSession(session: SessionToPersist) {}
 
-        this.sids.delete(id)
-    }
-
-    /**
-     * Broadcasts a packet.
-     *
-     * Options:
-     *  - `flags` {Object} flags for this packet
-     *  - `except` {Array} sids that should be excluded
-     *  - `rooms` {Array} list of rooms to broadcast to
-     *
-     * @param {Object} packet   the packet object
-     * @param {Object} opts     the options
-     * @public
-     */
-    public broadcast(packet: any, opts: BroadcastOptions): void {
-        const flags = opts.flags || {}
-        const basePacketOpts = {
-            preEncoded: true,
-            volatile: flags.volatile,
-            compress: flags.compress
-        }
-
-        packet.nsp = this.nsp.name
-        const encodedPackets = this.encoder.encode(packet)
-
-        const packetOpts = encodedPackets.map(encodedPacket => {
-            if (typeof encodedPacket === "string") {
-                return {
-                    ...basePacketOpts,
-                    wsPreEncoded: "4" + encodedPacket // "4" being the "message" packet type in Engine.IO
-                }
-            } else {
-                return basePacketOpts
-            }
-        })
-
-        this.apply(opts, socket => {
-            for (let i = 0; i < encodedPackets.length; i++) {
-                socket.client.writeToEngine(encodedPackets[i], packetOpts[i])
-            }
-        })
-    }
-
-    /**
-     * Gets a list of sockets by sid.
-     *
-     * @param {Set<Room>} rooms   the explicit set of rooms to check.
-     */
-    public sockets(rooms: Set<Room>): Promise<Set<SocketId>> {
-        const sids = new Set<SocketId>()
-
-        this.apply({ rooms }, socket => {
-            sids.add(socket.id)
-        })
-
-        return Promise.resolve(sids)
-    }
-
-    /**
-     * Gets the list of rooms a given socket has joined.
-     *
-     * @param {SocketId} id   the socket id
-     */
-    public socketRooms(id: SocketId): Set<Room> | undefined {
-        return this.sids.get(id)
-    }
-
-    /**
-     * Returns the matching socket instances
-     *
-     * @param opts - the filters to apply
-     */
-    public fetchSockets(opts: BroadcastOptions): Promise<any[]> {
-        const sockets = []
-
-        this.apply(opts, socket => {
-            sockets.push(socket)
-        })
-
-        return Promise.resolve(sockets)
-    }
-
-    /**
-     * Makes the matching socket instances join the specified rooms
-     *
-     * @param opts - the filters to apply
-     * @param rooms - the rooms to join
-     */
-    public addSockets(opts: BroadcastOptions, rooms: Room[]): void {
-        this.apply(opts, socket => {
-            socket.join(rooms)
-        })
-    }
-
-    /**
-     * Makes the matching socket instances leave the specified rooms
-     *
-     * @param opts - the filters to apply
-     * @param rooms - the rooms to leave
-     */
-    public delSockets(opts: BroadcastOptions, rooms: Room[]): void {
-        this.apply(opts, socket => {
-            rooms.forEach(room => socket.leave(room))
-        })
-    }
-
-    /**
-     * Makes the matching socket instances disconnect
-     *
-     * @param opts - the filters to apply
-     * @param close - whether to close the underlying connection
-     */
-    public disconnectSockets(opts: BroadcastOptions, close: boolean): void {
-        this.apply(opts, socket => {
-            socket.disconnect(close)
-        })
-    }
-
-    private apply(opts: BroadcastOptions, callback: (socket) => void): void {
-        const rooms = opts.rooms
-        const except = this.computeExceptSids(opts.except)
-
-        if (rooms.size) {
-            const ids = new Set()
-            for (const room of rooms) {
-                if (!this.rooms.has(room)) continue
-
-                for (const id of this.rooms.get(room)) {
-                    if (ids.has(id) || except.has(id)) continue
-                    const socket = this.nsp.sockets.get(id)
-                    if (socket) {
-                        callback(socket)
-                        ids.add(id)
-                    }
-                }
-            }
-        } else {
-            for (const [id] of this.sids) {
-                if (except.has(id)) continue
-                const socket = this.nsp.sockets.get(id)
-                if (socket) callback(socket)
-            }
-        }
-    }
-
-    private computeExceptSids(exceptRooms?: Set<Room>) {
-        const exceptSids = new Set()
-        if (exceptRooms && exceptRooms.size > 0) {
-            for (const room of exceptRooms) {
-                if (this.rooms.has(room)) {
-                    this.rooms.get(room).forEach(sid => exceptSids.add(sid))
-                }
-            }
-        }
-        return exceptSids
-    }
-
-    /**
-     * Send a packet to the other Socket.IO servers in the cluster
-     * @param packet - an array of arguments, which may include an acknowledgement callback at the end
-     */
-    public serverSideEmit(packet: any[]): void {
-        throw new Error(
-            "this adapter does not support the serverSideEmit() functionality"
-        )
-    }
+  /**
+   * Restore the session and find the packets that were missed by the client.
+   * @param pid
+   * @param offset
+   */
+  public restoreSession(
+    pid: PrivateSessionId,
+    offset: string
+  ): Session {
+    return null;
+  }
+}
+
+interface PersistedPacket {
+  id: string;
+  emittedAt: number;
+  data: unknown[];
+  opts: BroadcastOptions;
+}
+
+type SessionWithTimestamp = SessionToPersist & { disconnectedAt: number };
+
+export class SessionAwareAdapter extends Adapter {
+  private readonly maxDisconnectionDuration: number;
+
+  private sessions: Map<PrivateSessionId, SessionWithTimestamp> = new Map();
+  private packets: PersistedPacket[] = [];
+
+  constructor(readonly nsp: any) {
+    super(nsp);
+    this.maxDisconnectionDuration =
+      nsp.server.opts.connectionStateRecovery.maxDisconnectionDuration;
+
+    const timer = setInterval(() => {
+      const threshold = Date.now() - this.maxDisconnectionDuration;
+      this.sessions.forEach((session, sessionId) => {
+        const hasExpired = session.disconnectedAt < threshold;
+        if (hasExpired) {
+          this.sessions.delete(sessionId);
+        }
+      });
+      for (let i = this.packets.length - 1; i >= 0; i--) {
+        const hasExpired = this.packets[i].emittedAt < threshold;
+        if (hasExpired) {
+          this.packets.splice(0, i + 1);
+          break;
+        }
+      }
+    }, 60 * 1000);
+    // prevents the timer from keeping the process alive
+    timer.unref();
+  }
+
+  override persistSession(session: SessionToPersist) {
+    (session as SessionWithTimestamp).disconnectedAt = Date.now();
+    this.sessions.set(session.pid, session as SessionWithTimestamp);
+  }
+
+  override restoreSession(
+    pid: PrivateSessionId,
+    offset: string
+  ): Session {
+    const session = this.sessions.get(pid);
+    if (!session) {
+      // the session may have expired
+      return null;
+    }
+    const hasExpired =
+      session.disconnectedAt + this.maxDisconnectionDuration < Date.now();
+    if (hasExpired) {
+      // the session has expired
+      this.sessions.delete(pid);
+      return null;
+    }
+    const index = this.packets.findIndex((packet) => packet.id === offset);
+    if (index === -1) {
+      // the offset may be too old
+      return null;
+    }
+    const missedPackets = [];
+    for (let i = index + 1; i < this.packets.length; i++) {
+      const packet = this.packets[i];
+      if (shouldIncludePacket(session.rooms, packet.opts)) {
+        missedPackets.push(packet.data);
+      }
+    }
+    return {
+      ...session,
+      missedPackets,
+    };
+  }
+
+  override broadcast(packet: any, opts: BroadcastOptions) {
+    const isEventPacket = packet.type === 2;
+    // packets with acknowledgement are not stored because the acknowledgement function cannot be serialized and
+    // restored on another server upon reconnection
+    const withoutAcknowledgement = packet.id === undefined;
+    const notVolatile = opts.flags?.volatile === undefined;
+    if (isEventPacket && withoutAcknowledgement && notVolatile) {
+      const id = yeast();
+      // the offset is stored at the end of the data array, so the client knows the ID of the last packet it has
+      // processed (and the format is backward-compatible)
+      packet.data.push(id);
+      this.packets.push({
+        id,
+        opts,
+        data: packet.data,
+        emittedAt: Date.now(),
+      });
+    }
+    super.broadcast(packet, opts);
+  }
+}
+
+function shouldIncludePacket(
+  sessionRooms: Room[],
+  opts: BroadcastOptions
+): boolean {
+  const included =
+    opts.rooms.size === 0 || sessionRooms.some((room) => opts.rooms.has(room));
+  const notExcluded = sessionRooms.every((room) => !opts.except.has(room));
+  return included && notExcluded;
 }

packages/websocket/src/socket.io-client/contrib/backo2.ts

@@ -0,0 +1,77 @@
+/**
+ * Initialize backoff timer with `opts`.
+ *
+ * - `min` initial timeout in milliseconds [100]
+ * - `max` max timeout [10000]
+ * - `jitter` [0]
+ * - `factor` [2]
+ *
+ * @param {Object} opts
+ * @api public
+ */
+
+export function Backoff(this: any, opts) {
+    opts = opts || {}
+    this.ms = opts.min || 100
+    this.max = opts.max || 10000
+    this.factor = opts.factor || 2
+    this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0
+    this.attempts = 0
+}
+
+/**
+ * Return the backoff duration.
+ *
+ * @return {Number}
+ * @api public
+ */
+
+Backoff.prototype.duration = function () {
+    var ms = this.ms * Math.pow(this.factor, this.attempts++)
+    if (this.jitter) {
+        var rand = Math.random()
+        var deviation = Math.floor(rand * this.jitter * ms)
+        ms = (Math.floor(rand * 10) & 1) == 0 ? ms - deviation : ms + deviation
+    }
+    return Math.min(ms, this.max) | 0
+}
+
+/**
+ * Reset the number of attempts.
+ *
+ * @api public
+ */
+
+Backoff.prototype.reset = function () {
+    this.attempts = 0
+}
+
+/**
+ * Set the minimum duration
+ *
+ * @api public
+ */
+
+Backoff.prototype.setMin = function (min) {
+    this.ms = min
+}
+
+/**
+ * Set the maximum duration
+ *
+ * @api public
+ */
+
+Backoff.prototype.setMax = function (max) {
+    this.max = max
+}
+
+/**
+ * Set the jitter
+ *
+ * @api public
+ */
+
+Backoff.prototype.setJitter = function (jitter) {
+    this.jitter = jitter
+}

packages/websocket/src/socket.io-client/index.ts

@@ -1,19 +1,14 @@
 import { url } from "./url"
 import { Manager, ManagerOptions } from "./manager"
 import { Socket, SocketOptions } from "./socket"
+// import debugModule from "debug"; // debug()
 
 const debug = require("../debug")("socket.io-client")
 
-/**
- * Module exports.
- */
-
-module.exports = exports = lookup
-
 /**
  * Managers cache.
  */
-const cache: Record<string, Manager> = (exports.managers = {})
+const cache: Record<string, Manager> = {}
 
 /**
  * Looks up an existing `Manager` for multiplexing.
@@ -76,6 +71,15 @@ function lookup(
     return io.socket(parsed.path, opts)
 }
 
+// so that "lookup" can be used both as a function (e.g. `io(...)`) and as a
+// namespace (e.g. `io.connect(...)`), for backward compatibility
+Object.assign(lookup, {
+    Manager,
+    Socket,
+    io: lookup,
+    connect: lookup,
+})
+
 /**
  * Protocol version.
  *
@@ -84,22 +88,18 @@ function lookup(
 
 export { protocol } from "../socket.io-parser"
 
-/**
- * `connect`.
- *
- * @param {String} uri
- * @public
- */
-
-exports.connect = lookup
-
 /**
  * Expose constructors for standalone build.
  *
  * @public
  */
 
-export { Manager, ManagerOptions } from "./manager"
-export { Socket } from "./socket"
-export { lookup as io, SocketOptions }
-export default lookup
+export {
+    Manager,
+    ManagerOptions,
+    Socket,
+    SocketOptions,
+    lookup as io,
+    lookup as connect,
+    lookup as default,
+}

packages/websocket/src/socket.io-client/manager.ts

@@ -1,210 +1,26 @@
-import eio from "../engine.io-client"
-import { Socket, SocketOptions } from "./socket"
+import {
+    Socket as Engine,
+    SocketOptions as EngineOptions,
+    installTimerFunctions,
+    nextTick,
+} from "../engine.io-client"
+import { Socket, SocketOptions, DisconnectDescription } from "./socket.js"
+// import * as parser from "socket.io-parser"
 import * as parser from "../socket.io-parser"
+// import { Decoder, Encoder, Packet } from "socket.io-parser"
 import { Decoder, Encoder, Packet } from "../socket.io-parser"
-import { on } from "./on"
-import * as Backoff from "backo2"
+import { on } from "./on.js"
+import { Backoff } from "./contrib/backo2.js"
 import {
     DefaultEventsMap,
     EventsMap,
-    StrictEventEmitter,
-} from "./typed-events"
+    Emitter,
+} from "@socket.io/component-emitter"
+// import debugModule from "debug" // debug()
 
+// const debug = debugModule("socket.io-client:manager") // debug()
 const debug = require("../debug")("socket.io-client")
 
-interface EngineOptions {
-    /**
-     * The host that we're connecting to. Set from the URI passed when connecting
-     */
-    host: string
-
-    /**
-     * The hostname for our connection. Set from the URI passed when connecting
-     */
-    hostname: string
-
-    /**
-     * If this is a secure connection. Set from the URI passed when connecting
-     */
-    secure: boolean
-
-    /**
-     * The port for our connection. Set from the URI passed when connecting
-     */
-    port: string
-
-    /**
-     * Any query parameters in our uri. Set from the URI passed when connecting
-     */
-    query: { [key: string]: string }
-
-    /**
-     * `http.Agent` to use, defaults to `false` (NodeJS only)
-     */
-    agent: string | boolean
-
-    /**
-     * Whether the client should try to upgrade the transport from
-     * long-polling to something better.
-     * @default true
-     */
-    upgrade: boolean
-
-    /**
-     * Forces JSONP for polling transport.
-     */
-    forceJSONP: boolean
-
-    /**
-     * Determines whether to use JSONP when necessary for polling. If
-     * disabled (by settings to false) an error will be emitted (saying
-     * "No transports available") if no other transports are available.
-     * If another transport is available for opening a connection (e.g.
-     * WebSocket) that transport will be used instead.
-     * @default true
-     */
-    jsonp: boolean
-
-    /**
-     * Forces base 64 encoding for polling transport even when XHR2
-     * responseType is available and WebSocket even if the used standard
-     * supports binary.
-     */
-    forceBase64: boolean
-
-    /**
-     * Enables XDomainRequest for IE8 to avoid loading bar flashing with
-     * click sound. default to `false` because XDomainRequest has a flaw
-     * of not sending cookie.
-     * @default false
-     */
-    enablesXDR: boolean
-
-    /**
-     * The param name to use as our timestamp key
-     * @default 't'
-     */
-    timestampParam: string
-
-    /**
-     * Whether to add the timestamp with each transport request. Note: this
-     * is ignored if the browser is IE or Android, in which case requests
-     * are always stamped
-     * @default false
-     */
-    timestampRequests: boolean
-
-    /**
-     * A list of transports to try (in order). Engine.io always attempts to
-     * connect directly with the first one, provided the feature detection test
-     * for it passes.
-     * @default ['polling','websocket']
-     */
-    transports: string[]
-
-    /**
-     * The port the policy server listens on
-     * @default 843
-     */
-    policyPost: number
-
-    /**
-     * If true and if the previous websocket connection to the server succeeded,
-     * the connection attempt will bypass the normal upgrade process and will
-     * initially try websocket. A connection attempt following a transport error
-     * will use the normal upgrade process. It is recommended you turn this on
-     * only when using SSL/TLS connections, or if you know that your network does
-     * not block websockets.
-     * @default false
-     */
-    rememberUpgrade: boolean
-
-    /**
-     * Are we only interested in transports that support binary?
-     */
-    onlyBinaryUpgrades: boolean
-
-    /**
-     * Timeout for xhr-polling requests in milliseconds (0) (only for polling transport)
-     */
-    requestTimeout: number
-
-    /**
-     * Transport options for Node.js client (headers etc)
-     */
-    transportOptions: Object
-
-    /**
-     * (SSL) Certificate, Private key and CA certificates to use for SSL.
-     * Can be used in Node.js client environment to manually specify
-     * certificate information.
-     */
-    pfx: string
-
-    /**
-     * (SSL) Private key to use for SSL. Can be used in Node.js client
-     * environment to manually specify certificate information.
-     */
-    key: string
-
-    /**
-     * (SSL) A string or passphrase for the private key or pfx. Can be
-     * used in Node.js client environment to manually specify certificate
-     * information.
-     */
-    passphrase: string
-
-    /**
-     * (SSL) Public x509 certificate to use. Can be used in Node.js client
-     * environment to manually specify certificate information.
-     */
-    cert: string
-
-    /**
-     * (SSL) An authority certificate or array of authority certificates to
-     * check the remote host against.. Can be used in Node.js client
-     * environment to manually specify certificate information.
-     */
-    ca: string | string[]
-
-    /**
-     * (SSL) A string describing the ciphers to use or exclude. Consult the
-     * [cipher format list]
-     * (http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT) for
-     * details on the format.. Can be used in Node.js client environment to
-     * manually specify certificate information.
-     */
-    ciphers: string
-
-    /**
-     * (SSL) If true, the server certificate is verified against the list of
-     * supplied CAs. An 'error' event is emitted if verification fails.
-     * Verification happens at the connection level, before the HTTP request
-     * is sent. Can be used in Node.js client environment to manually specify
-     * certificate information.
-     */
-    rejectUnauthorized: boolean
-
-    /**
-     * Headers that will be passed for each request to the server (via xhr-polling and via websockets).
-     * These values then can be used during handshake or for special proxies.
-     */
-    extraHeaders?: { [header: string]: string }
-
-    /**
-     * Whether to include credentials (cookies, authorization headers, TLS
-     * client certificates, etc.) with cross-origin XHR polling requests
-     * @default false
-     */
-    withCredentials: boolean
-
-    /**
-     * Whether to automatically close the connection whenever the beforeunload event is received.
-     * @default true
-     */
-    closeOnBeforeunload: boolean
-}
-
 export interface ManagerOptions extends EngineOptions {
     /**
      * Should we force a new Manager for this connection?
@@ -267,13 +83,6 @@ export interface ManagerOptions extends EngineOptions {
      */
     autoConnect: boolean
 
-    /**
-     * weather we should unref the reconnect timer when it is
-     * create automatically
-     * @default false
-     */
-    autoUnref: boolean
-
     /**
      * the parser to use. Defaults to an instance of the Parser that ships with socket.io.
      */
@@ -285,7 +94,7 @@ interface ManagerReservedEvents {
     error: (err: Error) => void
     ping: () => void
     packet: (packet: Packet) => void
-    close: (reason: string) => void
+    close: (reason: string, description?: DisconnectDescription) => void
     reconnect_failed: () => void
     reconnect_attempt: (attempt: number) => void
     reconnect_error: (err: Error) => void
@@ -295,13 +104,13 @@ interface ManagerReservedEvents {
 export class Manager<
     ListenEvents extends EventsMap = DefaultEventsMap,
     EmitEvents extends EventsMap = ListenEvents
-    > extends StrictEventEmitter<{}, {}, ManagerReservedEvents> {
+> extends Emitter<{}, {}, ManagerReservedEvents> {
     /**
      * The Engine.IO client instance
      *
      * @public
      */
-    public engine: any
+    public engine: Engine
     /**
      * @private
      */
@@ -320,7 +129,9 @@ export class Manager<
 
     private nsps: Record<string, Socket> = {};
     private subs: Array<ReturnType<typeof on>> = [];
+    // @ts-ignore
     private backoff: Backoff
+    private setTimeoutFn: typeof setTimeout
     private _reconnection: boolean
     private _reconnectionAttempts: number
     private _reconnectionDelay: number
@@ -358,6 +169,7 @@ export class Manager<
 
         opts.path = opts.path || "/socket.io"
         this.opts = opts
+        installTimerFunctions(this, opts)
         this.reconnection(opts.reconnection !== false)
         this.reconnectionAttempts(opts.reconnectionAttempts || Infinity)
         this.reconnectionDelay(opts.reconnectionDelay || 1000)
@@ -507,8 +319,7 @@ export class Manager<
         if (~this._readyState.indexOf("open")) return this
 
         debug("opening %s", this.uri)
-        // @ts-ignore
-        this.engine = eio(this.uri, this.opts)
+        this.engine = new Engine(this.uri, this.opts)
         const socket = this.engine
         const self = this
         this._readyState = "opening"
@@ -543,10 +354,11 @@ export class Manager<
             }
 
             // set timer
-            const timer = setTimeout(() => {
+            const timer = this.setTimeoutFn(() => {
                 debug("connect attempt timed out after %d", timeout)
                 openSubDestroy()
                 socket.close()
+                // @ts-ignore
                 socket.emit("error", new Error("timeout"))
             }, timeout)
 
@@ -616,7 +428,11 @@ export class Manager<
      * @private
      */
     private ondata(data): void {
-        this.decoder.add(data)
+        try {
+            this.decoder.add(data)
+        } catch (e) {
+            this.onclose("parse error", e as Error)
+        }
     }
 
     /**
@@ -625,7 +441,10 @@ export class Manager<
      * @private
      */
     private ondecoded(packet): void {
-        this.emitReserved("packet", packet)
+        // the nextTick call prevents an exception in a user-provided event listener from triggering a disconnection due to a "parse error"
+        nextTick(() => {
+            this.emitReserved("packet", packet)
+        }, this.setTimeoutFn)
     }
 
     /**
@@ -651,6 +470,10 @@ export class Manager<
             this.nsps[nsp] = socket
         }
 
+        if (this._autoConnect) {
+            socket.connect()
+        }
+
         return socket
     }
 
@@ -713,13 +536,7 @@ export class Manager<
         debug("disconnect")
         this.skipReconnect = true
         this._reconnecting = false
-        if ("opening" === this._readyState) {
-            // `onclose` will not fire because
-            // an open event never happened
-            this.cleanup()
-        }
-        this.backoff.reset()
-        this._readyState = "closed"
+        this.onclose("forced close")
         if (this.engine) this.engine.close()
     }
 
@@ -737,13 +554,13 @@ export class Manager<
      *
      * @private
      */
-    private onclose(reason: string): void {
-        debug("onclose")
+    private onclose(reason: string, description?: DisconnectDescription): void {
+        debug("closed due to %s", reason)
 
         this.cleanup()
         this.backoff.reset()
         this._readyState = "closed"
-        this.emitReserved("close", reason)
+        this.emitReserved("close", reason, description)
 
         if (this._reconnection && !this.skipReconnect) {
             this.reconnect()
@@ -770,7 +587,7 @@ export class Manager<
             debug("will wait %dms before reconnect attempt", delay)
 
             this._reconnecting = true
-            const timer = setTimeout(() => {
+            const timer = this.setTimeoutFn(() => {
                 if (self.skipReconnect) return
 
                 debug("attempting reconnect")

packages/websocket/src/socket.io-client/on.ts

@@ -1,9 +1,7 @@
-// import type * as Emitter from "component-emitter";
-import { EventEmitter } from "events"
-import { StrictEventEmitter } from "./typed-events"
+import { Emitter } from "@socket.io/component-emitter"
 
 export function on(
-    obj: EventEmitter | StrictEventEmitter<any, any>,
+    obj: Emitter<any, any>,
     ev: string,
     fn: (err?: any) => any
 ): VoidFunction {

packages/websocket/src/socket.io-client/socket.ts

@@ -1,21 +1,82 @@
+// import { Packet, PacketType } from "socket.io-parser"
 import { Packet, PacketType } from "../socket.io-parser"
-import { on } from "./on"
-import { Manager } from "./manager"
+import { on } from "./on.js"
+import { Manager } from "./manager.js"
 import {
     DefaultEventsMap,
     EventNames,
     EventParams,
     EventsMap,
-    StrictEventEmitter,
-} from "./typed-events"
+    Emitter,
+} from "@socket.io/component-emitter"
+// import debugModule from "debug" // debug()
 
+// const debug = debugModule("socket.io-client:socket") // debug()
 const debug = require("../debug")("socket.io-client")
 
+type PrependTimeoutError<T extends any[]> = {
+    [K in keyof T]: T[K] extends (...args: infer Params) => infer Result
+    ? (err: Error, ...args: Params) => Result
+    : T[K]
+}
+
+/**
+ * Utility type to decorate the acknowledgement callbacks with a timeout error.
+ *
+ * This is needed because the timeout() flag breaks the symmetry between the sender and the receiver:
+ *
+ * @example
+ * interface Events {
+ *   "my-event": (val: string) => void;
+ * }
+ *
+ * socket.on("my-event", (cb) => {
+ *   cb("123"); // one single argument here
+ * });
+ *
+ * socket.timeout(1000).emit("my-event", (err, val) => {
+ *   // two arguments there (the "err" argument is not properly typed)
+ * });
+ *
+ */
+export type DecorateAcknowledgements<E> = {
+    [K in keyof E]: E[K] extends (...args: infer Params) => infer Result
+    ? (...args: PrependTimeoutError<Params>) => Result
+    : E[K]
+}
+
+export type Last<T extends any[]> = T extends [...infer H, infer L] ? L : any
+export type AllButLast<T extends any[]> = T extends [...infer H, infer L]
+    ? H
+    : any[]
+export type FirstArg<T> = T extends (arg: infer Param) => infer Result
+    ? Param
+    : any
+
 export interface SocketOptions {
     /**
      * the authentication payload sent when connecting to the Namespace
      */
-    auth: { [key: string]: any } | ((cb: (data: object) => void) => void)
+    auth?: { [key: string]: any } | ((cb: (data: object) => void) => void)
+    /**
+     * The maximum number of retries. Above the limit, the packet will be discarded.
+     *
+     * Using `Infinity` means the delivery guarantee is "at-least-once" (instead of "at-most-once" by default), but a
+     * smaller value like 10 should be sufficient in practice.
+     */
+    retries?: number
+    /**
+     * The default timeout in milliseconds used when waiting for an acknowledgement.
+     */
+    ackTimeout?: number
+}
+
+type QueuedPacket = {
+    id: number
+    args: unknown[]
+    flags: Flags
+    pending: boolean
+    tryCount: number
 }
 
 /**
@@ -35,58 +96,180 @@ const RESERVED_EVENTS = Object.freeze({
 interface Flags {
     compress?: boolean
     volatile?: boolean
+    timeout?: number
+    fromQueue?: boolean
 }
 
+export type DisconnectDescription =
+    | Error
+    | {
+        description: string
+        context?: unknown // context should be typed as CloseEvent | XMLHttpRequest, but these types are not available on non-browser platforms
+    }
+
 interface SocketReservedEvents {
     connect: () => void
     connect_error: (err: Error) => void
-    disconnect: (reason: Socket.DisconnectReason) => void
+    disconnect: (
+        reason: Socket.DisconnectReason,
+        description?: DisconnectDescription
+    ) => void
 }
 
+/**
+ * A Socket is the fundamental class for interacting with the server.
+ *
+ * A Socket belongs to a certain Namespace (by default /) and uses an underlying {@link Manager} to communicate.
+ *
+ * @example
+ * const socket = io();
+ *
+ * socket.on("connect", () => {
+ *   console.log("connected");
+ * });
+ *
+ * // send an event to the server
+ * socket.emit("foo", "bar");
+ *
+ * socket.on("foobar", () => {
+ *   // an event was received from the server
+ * });
+ *
+ * // upon disconnection
+ * socket.on("disconnect", (reason) => {
+ *   console.log(`disconnected due to ${reason}`);
+ * });
+ */
 export class Socket<
     ListenEvents extends EventsMap = DefaultEventsMap,
     EmitEvents extends EventsMap = ListenEvents
-    > extends StrictEventEmitter<ListenEvents, EmitEvents, SocketReservedEvents> {
+> extends Emitter<ListenEvents, EmitEvents, SocketReservedEvents> {
     public readonly io: Manager<ListenEvents, EmitEvents>
 
+    /**
+   * A unique identifier for the session.
+   *
+   * @example
+   * const socket = io();
+   *
+   * console.log(socket.id); // undefined
+   *
+   * socket.on("connect", () => {
+   *   console.log(socket.id); // "G5p5..."
+   * });
+   */
     public id: string
-    public connected: boolean
-    public disconnected: boolean
 
+    /**
+     * The session ID used for connection state recovery, which must not be shared (unlike {@link id}).
+     *
+     * @private
+     */
+    private _pid: string
+
+    /**
+     * The offset of the last received packet, which will be sent upon reconnection to allow for the recovery of the connection state.
+     *
+     * @private
+     */
+    private _lastOffset: string
+
+    /**
+     * Whether the socket is currently connected to the server.
+     *
+     * @example
+     * const socket = io();
+     *
+     * socket.on("connect", () => {
+     *   console.log(socket.connected); // true
+     * });
+     *
+     * socket.on("disconnect", () => {
+     *   console.log(socket.connected); // false
+     * });
+     */
+    public connected: boolean = false;
+    /**
+     * Whether the connection state was recovered after a temporary disconnection. In that case, any missed packets will
+     * be transmitted by the server.
+     */
+    public recovered: boolean = false;
+    /**
+     * Credentials that are sent when accessing a namespace.
+     *
+     * @example
+     * const socket = io({
+     *   auth: {
+     *     token: "abcd"
+     *   }
+     * });
+     *
+     * // or with a function
+     * const socket = io({
+     *   auth: (cb) => {
+     *     cb({ token: localStorage.token })
+     *   }
+     * });
+     */
     public auth: { [key: string]: any } | ((cb: (data: object) => void) => void)
+    /**
+     * Buffer for packets received before the CONNECT packet
+     */
     public receiveBuffer: Array<ReadonlyArray<any>> = [];
+    /**
+     * Buffer for packets that will be sent once the socket is connected
+     */
     public sendBuffer: Array<Packet> = [];
+    /**
+     * The queue of packets to be sent with retry in case of failure.
+     *
+     * Packets are sent one by one, each waiting for the server acknowledgement, in order to guarantee the delivery order.
+     * @private
+     */
+    private _queue: Array<QueuedPacket> = [];
 
     private readonly nsp: string
+    private readonly _opts: SocketOptions
 
     private ids: number = 0;
     private acks: object = {};
     private flags: Flags = {};
     private subs?: Array<VoidFunction>
     private _anyListeners: Array<(...args: any[]) => void>
+    private _anyOutgoingListeners: Array<(...args: any[]) => void>
 
     /**
      * `Socket` constructor.
-     *
-     * @public
      */
     constructor(io: Manager, nsp: string, opts?: Partial<SocketOptions>) {
         super()
         this.io = io
         this.nsp = nsp
-        this.ids = 0
-        this.acks = {}
-        this.receiveBuffer = []
-        this.sendBuffer = []
-        this.connected = false
-        this.disconnected = true
-        this.flags = {}
         if (opts && opts.auth) {
             this.auth = opts.auth
         }
+        this._opts = Object.assign({}, opts)
         if (this.io._autoConnect) this.open()
     }
 
+    /**
+     * Whether the socket is currently disconnected
+     *
+     * @example
+     * const socket = io();
+     *
+     * socket.on("connect", () => {
+     *   console.log(socket.disconnected); // false
+     * });
+     *
+     * socket.on("disconnect", () => {
+     *   console.log(socket.disconnected); // true
+     * });
+     */
+    public get disconnected(): boolean {
+        return !this.connected
+    }
+
     /**
      * Subscribe to open, close and packet events
      *
@@ -105,7 +288,21 @@ export class Socket<
     }
 
     /**
-     * Whether the Socket will try to reconnect when its Manager connects or reconnects
+     * Whether the Socket will try to reconnect when its Manager connects or reconnects.
+     *
+     * @example
+     * const socket = io();
+     *
+     * console.log(socket.active); // true
+     *
+     * socket.on("disconnect", (reason) => {
+     *   if (reason === "io server disconnect") {
+     *     // the disconnection was initiated by the server, you need to manually reconnect
+     *     console.log(socket.active); // false
+     *   }
+     *   // else the socket will automatically try to reconnect
+     *   console.log(socket.active); // true
+     * });
      */
     public get active(): boolean {
         return !!this.subs
@@ -114,7 +311,12 @@ export class Socket<
     /**
      * "Opens" the socket.
      *
-     * @public
+     * @example
+     * const socket = io({
+     *   autoConnect: false
+     * });
+     *
+     * socket.connect();
      */
     public connect(): this {
         if (this.connected) return this
@@ -126,7 +328,7 @@ export class Socket<
     }
 
     /**
-     * Alias for connect()
+     * Alias for {@link connect()}.
      */
     public open(): this {
         return this.connect()
@@ -135,8 +337,17 @@ export class Socket<
     /**
      * Sends a `message` event.
      *
+     * This method mimics the WebSocket.send() method.
+     *
+     * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/send
+     *
+     * @example
+     * socket.send("hello");
+     *
+     * // this is equivalent to
+     * socket.emit("message", "hello");
+     *
      * @return self
-     * @public
      */
     public send(...args: any[]): this {
         args.unshift("message")
@@ -149,18 +360,34 @@ export class Socket<
      * Override `emit`.
      * If the event is in `events`, it's emitted normally.
      *
+     * @example
+     * socket.emit("hello", "world");
+     *
+     * // all serializable datastructures are supported (no need to call JSON.stringify)
+     * socket.emit("hello", 1, "2", { 3: ["4"], 5: Uint8Array.from([6]) });
+     *
+     * // with an acknowledgement from the server
+     * socket.emit("hello", "world", (val) => {
+     *   // ...
+     * });
+     *
      * @return self
-     * @public
      */
     public emit<Ev extends EventNames<EmitEvents>>(
         ev: Ev,
         ...args: EventParams<EmitEvents, Ev>
     ): this {
         if (RESERVED_EVENTS.hasOwnProperty(ev)) {
-            throw new Error('"' + ev + '" is a reserved event name')
+            throw new Error('"' + ev.toString() + '" is a reserved event name')
         }
 
         args.unshift(ev)
+
+        if (this._opts.retries && !this.flags.fromQueue && !this.flags.volatile) {
+            this._addToQueue(args)
+            return this
+        }
+
         const packet: any = {
             type: PacketType.EVENT,
             data: args,
@@ -171,9 +398,12 @@ export class Socket<
 
         // event ack callback
         if ("function" === typeof args[args.length - 1]) {
-            debug("emitting packet with ack id %d", this.ids)
-            this.acks[this.ids] = args.pop()
-            packet.id = this.ids++
+            const id = this.ids++
+            debug("emitting packet with ack id %d", id)
+
+            const ack = args.pop() as Function
+            this._registerAckCallback(id, ack)
+            packet.id = id
         }
 
         const isTransportWritable =
@@ -186,6 +416,7 @@ export class Socket<
         if (discardPacket) {
             debug("discard packet as the transport is not currently writable")
         } else if (this.connected) {
+            this.notifyOutgoingListeners(packet)
             this.packet(packet)
         } else {
             this.sendBuffer.push(packet)
@@ -196,6 +427,152 @@ export class Socket<
         return this
     }
 
+    /**
+     * @private
+     */
+    private _registerAckCallback(id: number, ack: Function) {
+        const timeout = this.flags.timeout ?? this._opts.ackTimeout
+        if (timeout === undefined) {
+            this.acks[id] = ack
+            return
+        }
+
+        // @ts-ignore
+        const timer = this.io.setTimeoutFn(() => {
+            delete this.acks[id]
+            for (let i = 0; i < this.sendBuffer.length; i++) {
+                if (this.sendBuffer[i].id === id) {
+                    debug("removing packet with ack id %d from the buffer", id)
+                    this.sendBuffer.splice(i, 1)
+                }
+            }
+            debug("event with ack id %d has timed out after %d ms", id, timeout)
+            ack.call(this, new Error("operation has timed out"))
+        }, timeout)
+
+        this.acks[id] = (...args) => {
+            // @ts-ignore
+            this.io.clearTimeoutFn(timer)
+            ack.apply(this, [null, ...args])
+        }
+    }
+
+    /**
+     * Emits an event and waits for an acknowledgement
+     *
+     * @example
+     * // without timeout
+     * const response = await socket.emitWithAck("hello", "world");
+     *
+     * // with a specific timeout
+     * try {
+     *   const response = await socket.timeout(1000).emitWithAck("hello", "world");
+     * } catch (err) {
+     *   // the server did not acknowledge the event in the given delay
+     * }
+     *
+     * @return a Promise that will be fulfilled when the server acknowledges the event
+     */
+    public emitWithAck<Ev extends EventNames<EmitEvents>>(
+        ev: Ev,
+        ...args: AllButLast<EventParams<EmitEvents, Ev>>
+    ): Promise<FirstArg<Last<EventParams<EmitEvents, Ev>>>> {
+        // the timeout flag is optional
+        const withErr =
+            this.flags.timeout !== undefined || this._opts.ackTimeout !== undefined
+        return new Promise((resolve, reject) => {
+            args.push((arg1, arg2) => {
+                if (withErr) {
+                    return arg1 ? reject(arg1) : resolve(arg2)
+                } else {
+                    return resolve(arg1)
+                }
+            })
+            this.emit(ev, ...(args as any[] as EventParams<EmitEvents, Ev>))
+        })
+    }
+
+    /**
+     * Add the packet to the queue.
+     * @param args
+     * @private
+     */
+    private _addToQueue(args: unknown[]) {
+        let ack
+        if (typeof args[args.length - 1] === "function") {
+            ack = args.pop()
+        }
+
+        const packet = {
+            id: this.ids++,
+            tryCount: 0,
+            pending: false,
+            args,
+            flags: Object.assign({ fromQueue: true }, this.flags),
+        }
+
+        args.push((err, ...responseArgs) => {
+            if (packet !== this._queue[0]) {
+                // the packet has already been acknowledged
+                return
+            }
+            const hasError = err !== null
+            if (hasError) {
+                if (packet.tryCount > this._opts.retries) {
+                    debug(
+                        "packet [%d] is discarded after %d tries",
+                        packet.id,
+                        packet.tryCount
+                    )
+                    this._queue.shift()
+                    if (ack) {
+                        ack(err)
+                    }
+                }
+            } else {
+                debug("packet [%d] was successfully sent", packet.id)
+                this._queue.shift()
+                if (ack) {
+                    ack(null, ...responseArgs)
+                }
+            }
+            packet.pending = false
+            return this._drainQueue()
+        })
+
+        this._queue.push(packet)
+        this._drainQueue()
+    }
+
+    /**
+     * Send the first packet of the queue, and wait for an acknowledgement from the server.
+     * @private
+     */
+    private _drainQueue() {
+        debug("draining queue")
+        if (this._queue.length === 0) {
+            return
+        }
+        const packet = this._queue[0]
+        if (packet.pending) {
+            debug(
+                "packet [%d] has already been sent and is waiting for an ack",
+                packet.id
+            )
+            return
+        }
+        packet.pending = true
+        packet.tryCount++
+        debug("sending packet [%d] (try n°%d)", packet.id, packet.tryCount)
+        const currentId = this.ids
+        this.ids = packet.id // the same id is reused for consecutive retries, in order to allow deduplication on the server side
+        this.flags = packet.flags
+
+        // @ts-ignore
+        this.emit.apply(this, packet.args)
+        this.ids = currentId // restore offset
+    }
+
     /**
      * Sends a packet.
      *
@@ -216,13 +593,28 @@ export class Socket<
         debug("transport is open - connecting")
         if (typeof this.auth == "function") {
             this.auth((data) => {
-                this.packet({ type: PacketType.CONNECT, data })
+                this._sendConnectPacket(data as Record<string, unknown>)
             })
         } else {
-            this.packet({ type: PacketType.CONNECT, data: this.auth })
+            this._sendConnectPacket(this.auth)
         }
     }
 
+    /**
+     * Sends a CONNECT packet to initiate the Socket.IO session.
+     *
+     * @param data
+     * @private
+     */
+    private _sendConnectPacket(data: Record<string, unknown>) {
+        this.packet({
+            type: PacketType.CONNECT,
+            data: this._pid
+                ? Object.assign({ pid: this._pid, offset: this._lastOffset }, data)
+                : data,
+        })
+    }
+
     /**
      * Called upon engine or manager `error`.
      *
@@ -239,14 +631,17 @@ export class Socket<
      * Called upon engine `close`.
      *
      * @param reason
+     * @param description
      * @private
      */
-    private onclose(reason: Socket.DisconnectReason): void {
+    private onclose(
+        reason: Socket.DisconnectReason,
+        description?: DisconnectDescription
+    ): void {
         debug("close (%s)", reason)
         this.connected = false
-        this.disconnected = true
         delete this.id
-        this.emitReserved("disconnect", reason)
+        this.emitReserved("disconnect", reason, description)
     }
 
     /**
@@ -263,8 +658,7 @@ export class Socket<
         switch (packet.type) {
             case PacketType.CONNECT:
                 if (packet.data && packet.data.sid) {
-                    const id = packet.data.sid
-                    this.onconnect(id)
+                    this.onconnect(packet.data.sid, packet.data.pid)
                 } else {
                     this.emitReserved(
                         "connect_error",
@@ -276,17 +670,11 @@ export class Socket<
                 break
 
             case PacketType.EVENT:
-                this.onevent(packet)
-                break
-
             case PacketType.BINARY_EVENT:
                 this.onevent(packet)
                 break
 
             case PacketType.ACK:
-                this.onack(packet)
-                break
-
             case PacketType.BINARY_ACK:
                 this.onack(packet)
                 break
@@ -296,6 +684,7 @@ export class Socket<
                 break
 
             case PacketType.CONNECT_ERROR:
+                this.destroy()
                 const err = new Error(packet.data.message)
                 // @ts-ignore
                 err.data = packet.data.data
@@ -336,6 +725,9 @@ export class Socket<
         }
         // @ts-ignore
         super.emit.apply(this, args)
+        if (this._pid && args.length && typeof args[args.length - 1] === "string") {
+            this._lastOffset = args[args.length - 1]
+        }
     }
 
     /**
@@ -382,11 +774,12 @@ export class Socket<
      *
      * @private
      */
-    private onconnect(id: string): void {
+    private onconnect(id: string, pid: string) {
         debug("socket connected with id %s", id)
         this.id = id
+        this.recovered = pid && this._pid === pid
+        this._pid = pid // defined only if connection state recovery is enabled
         this.connected = true
-        this.disconnected = false
         this.emitBuffered()
         this.emitReserved("connect")
     }
@@ -400,7 +793,10 @@ export class Socket<
         this.receiveBuffer.forEach((args) => this.emitEvent(args))
         this.receiveBuffer = []
 
-        this.sendBuffer.forEach((packet) => this.packet(packet))
+        this.sendBuffer.forEach((packet) => {
+            this.notifyOutgoingListeners(packet)
+            this.packet(packet)
+        })
         this.sendBuffer = []
     }
 
@@ -432,10 +828,20 @@ export class Socket<
     }
 
     /**
-     * Disconnects the socket manually.
+     * Disconnects the socket manually. In that case, the socket will not try to reconnect.
+     *
+     * If this is the last active Socket instance of the {@link Manager}, the low-level connection will be closed.
+     *
+     * @example
+     * const socket = io();
+     *
+     * socket.on("disconnect", (reason) => {
+     *   // console.log(reason); prints "io client disconnect"
+     * });
+     *
+     * socket.disconnect();
      *
      * @return self
-     * @public
      */
     public disconnect(): this {
         if (this.connected) {
@@ -454,10 +860,9 @@ export class Socket<
     }
 
     /**
-     * Alias for disconnect()
+     * Alias for {@link disconnect()}.
      *
      * @return self
-     * @public
      */
     public close(): this {
         return this.disconnect()
@@ -466,9 +871,11 @@ export class Socket<
     /**
      * Sets the compress flag.
      *
+     * @example
+     * socket.compress(false).emit("hello");
+     *
      * @param compress - if `true`, compresses the sending data
      * @return self
-     * @public
      */
     public compress(compress: boolean): this {
         this.flags.compress = compress
@@ -479,20 +886,46 @@ export class Socket<
      * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not
      * ready to send messages.
      *
+     * @example
+     * socket.volatile.emit("hello"); // the server may or may not receive it
+     *
      * @returns self
-     * @public
      */
     public get volatile(): this {
         this.flags.volatile = true
         return this
     }
 
+    /**
+     * Sets a modifier for a subsequent event emission that the callback will be called with an error when the
+     * given number of milliseconds have elapsed without an acknowledgement from the server:
+     *
+     * @example
+     * socket.timeout(5000).emit("my-event", (err) => {
+     *   if (err) {
+     *     // the server did not acknowledge the event in the given delay
+     *   }
+     * });
+     *
+     * @returns self
+     */
+    public timeout(
+        timeout: number
+    ): Socket<ListenEvents, DecorateAcknowledgements<EmitEvents>> {
+        this.flags.timeout = timeout
+        return this
+    }
+
     /**
      * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
      * callback.
      *
+     * @example
+     * socket.onAny((event, ...args) => {
+     *   console.log(`got ${event}`);
+     * });
+     *
      * @param listener
-     * @public
      */
     public onAny(listener: (...args: any[]) => void): this {
         this._anyListeners = this._anyListeners || []
@@ -504,8 +937,12 @@ export class Socket<
      * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
      * callback. The listener is added to the beginning of the listeners array.
      *
+     * @example
+     * socket.prependAny((event, ...args) => {
+     *   console.log(`got event ${event}`);
+     * });
+     *
      * @param listener
-     * @public
      */
     public prependAny(listener: (...args: any[]) => void): this {
         this._anyListeners = this._anyListeners || []
@@ -516,8 +953,20 @@ export class Socket<
     /**
      * Removes the listener that will be fired when any event is emitted.
      *
+     * @example
+     * const catchAllListener = (event, ...args) => {
+     *   console.log(`got event ${event}`);
+     * }
+     *
+     * socket.onAny(catchAllListener);
+     *
+     * // remove a specific listener
+     * socket.offAny(catchAllListener);
+     *
+     * // or remove all listeners
+     * socket.offAny();
+     *
      * @param listener
-     * @public
      */
     public offAny(listener?: (...args: any[]) => void): this {
         if (!this._anyListeners) {
@@ -540,12 +989,108 @@ export class Socket<
     /**
      * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
      * e.g. to remove listeners.
-     *
-     * @public
      */
     public listenersAny() {
         return this._anyListeners || []
     }
+
+    /**
+     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
+     * callback.
+     *
+     * Note: acknowledgements sent to the server are not included.
+     *
+     * @example
+     * socket.onAnyOutgoing((event, ...args) => {
+     *   console.log(`sent event ${event}`);
+     * });
+     *
+     * @param listener
+     */
+    public onAnyOutgoing(listener: (...args: any[]) => void): this {
+        this._anyOutgoingListeners = this._anyOutgoingListeners || []
+        this._anyOutgoingListeners.push(listener)
+        return this
+    }
+
+    /**
+     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
+     * callback. The listener is added to the beginning of the listeners array.
+     *
+     * Note: acknowledgements sent to the server are not included.
+     *
+     * @example
+     * socket.prependAnyOutgoing((event, ...args) => {
+     *   console.log(`sent event ${event}`);
+     * });
+     *
+     * @param listener
+     */
+    public prependAnyOutgoing(listener: (...args: any[]) => void): this {
+        this._anyOutgoingListeners = this._anyOutgoingListeners || []
+        this._anyOutgoingListeners.unshift(listener)
+        return this
+    }
+
+    /**
+     * Removes the listener that will be fired when any event is emitted.
+     *
+     * @example
+     * const catchAllListener = (event, ...args) => {
+     *   console.log(`sent event ${event}`);
+     * }
+     *
+     * socket.onAnyOutgoing(catchAllListener);
+     *
+     * // remove a specific listener
+     * socket.offAnyOutgoing(catchAllListener);
+     *
+     * // or remove all listeners
+     * socket.offAnyOutgoing();
+     *
+     * @param [listener] - the catch-all listener (optional)
+     */
+    public offAnyOutgoing(listener?: (...args: any[]) => void): this {
+        if (!this._anyOutgoingListeners) {
+            return this
+        }
+        if (listener) {
+            const listeners = this._anyOutgoingListeners
+            for (let i = 0; i < listeners.length; i++) {
+                if (listener === listeners[i]) {
+                    listeners.splice(i, 1)
+                    return this
+                }
+            }
+        } else {
+            this._anyOutgoingListeners = []
+        }
+        return this
+    }
+
+    /**
+     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
+     * e.g. to remove listeners.
+     */
+    public listenersAnyOutgoing() {
+        return this._anyOutgoingListeners || []
+    }
+
+    /**
+     * Notify the listeners for each packet sent
+     *
+     * @param packet
+     *
+     * @private
+     */
+    private notifyOutgoingListeners(packet: Packet) {
+        if (this._anyOutgoingListeners && this._anyOutgoingListeners.length) {
+            const listeners = this._anyOutgoingListeners.slice()
+            for (const listener of listeners) {
+                listener.apply(this, packet.data)
+            }
+        }
+    }
 }
 
 export namespace Socket {
@@ -555,4 +1100,5 @@ export namespace Socket {
         | "ping timeout"
         | "transport close"
         | "transport error"
+        | "parse error"
 }

packages/websocket/src/socket.io-client/typed-events.ts

@@ -1,157 +0,0 @@
-import { EventEmitter } from "events"
-
-/**
- * An events map is an interface that maps event names to their value, which
- * represents the type of the `on` listener.
- */
-export interface EventsMap {
-    [event: string]: any
-}
-
-/**
- * The default events map, used if no EventsMap is given. Using this EventsMap
- * is equivalent to accepting all event names, and any data.
- */
-export interface DefaultEventsMap {
-    [event: string]: (...args: any[]) => void
-}
-
-/**
- * Returns a union type containing all the keys of an event map.
- */
-export type EventNames<Map extends EventsMap> = keyof Map & (string | symbol)
-
-/** The tuple type representing the parameters of an event listener */
-export type EventParams<
-    Map extends EventsMap,
-    Ev extends EventNames<Map>
-    > = Parameters<Map[Ev]>
-
-/**
- * The event names that are either in ReservedEvents or in UserEvents
- */
-export type ReservedOrUserEventNames<
-    ReservedEventsMap extends EventsMap,
-    UserEvents extends EventsMap
-    > = EventNames<ReservedEventsMap> | EventNames<UserEvents>
-
-/**
- * Type of a listener of a user event or a reserved event. If `Ev` is in
- * `ReservedEvents`, the reserved event listener is returned.
- */
-export type ReservedOrUserListener<
-    ReservedEvents extends EventsMap,
-    UserEvents extends EventsMap,
-    Ev extends ReservedOrUserEventNames<ReservedEvents, UserEvents>
-    > = FallbackToUntypedListener<
-        Ev extends EventNames<ReservedEvents>
-        ? ReservedEvents[Ev]
-        : Ev extends EventNames<UserEvents>
-        ? UserEvents[Ev]
-        : never
-    >
-
-/**
- * Returns an untyped listener type if `T` is `never`; otherwise, returns `T`.
- *
- * This is a hack to mitigate https://github.com/socketio/socket.io/issues/3833.
- * Needed because of https://github.com/microsoft/TypeScript/issues/41778
- */
-type FallbackToUntypedListener<T> = [T] extends [never]
-    ? (...args: any[]) => void
-    : T
-
-/**
- * Strictly typed version of an `EventEmitter`. A `TypedEventEmitter` takes type
- * parameters for mappings of event names to event data types, and strictly
- * types method calls to the `EventEmitter` according to these event maps.
- *
- * @typeParam ListenEvents - `EventsMap` of user-defined events that can be
- * listened to with `on` or `once`
- * @typeParam EmitEvents - `EventsMap` of user-defined events that can be
- * emitted with `emit`
- * @typeParam ReservedEvents - `EventsMap` of reserved events, that can be
- * emitted by socket.io with `emitReserved`, and can be listened to with
- * `listen`.
- */
-export abstract class StrictEventEmitter<
-    ListenEvents extends EventsMap,
-    EmitEvents extends EventsMap,
-    ReservedEvents extends EventsMap = {}
-    > extends EventEmitter {
-    /**
-     * Adds the `listener` function as an event listener for `ev`.
-     *
-     * @param ev Name of the event
-     * @param listener Callback function
-     */
-    on<Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>>(
-        ev: Ev,
-        listener: ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>
-    ): this {
-        super.on(ev as string, listener)
-        return this
-    }
-
-    /**
-     * Adds a one-time `listener` function as an event listener for `ev`.
-     *
-     * @param ev Name of the event
-     * @param listener Callback function
-     */
-    once<Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>>(
-        ev: Ev,
-        listener: ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>
-    ): this {
-        super.once(ev as string, listener)
-        return this
-    }
-
-    /**
-     * Emits an event.
-     *
-     * @param ev Name of the event
-     * @param args Values to send to listeners of this event
-     */
-    // @ts-ignore
-    emit<Ev extends EventNames<EmitEvents>>(
-        ev: Ev,
-        ...args: EventParams<EmitEvents, Ev>
-    ): this {
-        super.emit(ev as string, ...args)
-        return this
-    }
-
-    /**
-     * Emits a reserved event.
-     *
-     * This method is `protected`, so that only a class extending
-     * `StrictEventEmitter` can emit its own reserved events.
-     *
-     * @param ev Reserved event name
-     * @param args Arguments to emit along with the event
-     */
-    protected emitReserved<Ev extends EventNames<ReservedEvents>>(
-        ev: Ev,
-        ...args: EventParams<ReservedEvents, Ev>
-    ): this {
-        super.emit(ev as string, ...args)
-        return this
-    }
-
-    /**
-     * Returns the listeners listening to an event.
-     *
-     * @param event Event name
-     * @returns Array of listeners subscribed to `event`
-     */
-    listeners<Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>>(
-        event: Ev
-    ): ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>[] {
-        return super.listeners(event as string) as ReservedOrUserListener<
-            ReservedEvents,
-            ListenEvents,
-            Ev
-        >[]
-    }
-}

packages/websocket/src/socket.io-client/url.ts

@@ -1,5 +1,8 @@
-import * as parseuri from "parseuri"
+// import { parse } from "engine.io-client"
+import { parse } from "../engine.io-client"
+// import debugModule from "debug" // debug()
 
+// const debug = debugModule("socket.io-client:url"); // debug()
 const debug = require("../debug")("socket.io-client")
 
 type ParsedUrl = {
@@ -67,7 +70,7 @@ export function url(
 
         // parse
         debug("parse %s", uri)
-        obj = parseuri(uri) as ParsedUrl
+        obj = parse(uri) as ParsedUrl
     }
 
     // make sure we treat `localhost:80` and `localhost` equally

packages/websocket/src/socket.io-parser/binary.ts

@@ -1,4 +1,4 @@
-import { isBinary } from "./is-binary"
+import { isBinary } from "./is-binary.js";
 
 /**
  * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
@@ -9,37 +9,37 @@ import { isBinary } from "./is-binary"
  */
 
 export function deconstructPacket(packet) {
-    const buffers = []
-    const packetData = packet.data
-    const pack = packet
-    pack.data = _deconstructPacket(packetData, buffers)
-    pack.attachments = buffers.length // number of binary 'attachments'
-    return { packet: pack, buffers: buffers }
+  const buffers = [];
+  const packetData = packet.data;
+  const pack = packet;
+  pack.data = _deconstructPacket(packetData, buffers);
+  pack.attachments = buffers.length; // number of binary 'attachments'
+  return { packet: pack, buffers: buffers };
 }
 
 function _deconstructPacket(data, buffers) {
-    if (!data) return data
+  if (!data) return data;
 
-    if (isBinary(data)) {
-        const placeholder = { _placeholder: true, num: buffers.length }
-        buffers.push(data)
-        return placeholder
-    } else if (Array.isArray(data)) {
-        const newData = new Array(data.length)
-        for (let i = 0; i < data.length; i++) {
-            newData[i] = _deconstructPacket(data[i], buffers)
-        }
-        return newData
-    } else if (typeof data === "object" && !(data instanceof Date)) {
-        const newData = {}
-        for (const key in data) {
-            if (data.hasOwnProperty(key)) {
-                newData[key] = _deconstructPacket(data[key], buffers)
-            }
-        }
-        return newData
+  if (isBinary(data)) {
+    const placeholder = { _placeholder: true, num: buffers.length };
+    buffers.push(data);
+    return placeholder;
+  } else if (Array.isArray(data)) {
+    const newData = new Array(data.length);
+    for (let i = 0; i < data.length; i++) {
+      newData[i] = _deconstructPacket(data[i], buffers);
     }
-    return data
+    return newData;
+  } else if (typeof data === "object" && !(data instanceof Date)) {
+    const newData = {};
+    for (const key in data) {
+      if (Object.prototype.hasOwnProperty.call(data, key)) {
+        newData[key] = _deconstructPacket(data[key], buffers);
+      }
+    }
+    return newData;
+  }
+  return data;
 }
 
 /**
@@ -52,27 +52,35 @@ function _deconstructPacket(data, buffers) {
  */
 
 export function reconstructPacket(packet, buffers) {
-    packet.data = _reconstructPacket(packet.data, buffers)
-    packet.attachments = undefined // no longer useful
-    return packet
+  packet.data = _reconstructPacket(packet.data, buffers);
+  delete packet.attachments; // no longer useful
+  return packet;
 }
 
 function _reconstructPacket(data, buffers) {
-    if (!data) return data
+  if (!data) return data;
 
-    if (data && data._placeholder) {
-        return buffers[data.num] // appropriate buffer (should be natural order anyway)
-    } else if (Array.isArray(data)) {
-        for (let i = 0; i < data.length; i++) {
-            data[i] = _reconstructPacket(data[i], buffers)
-        }
-    } else if (typeof data === "object") {
-        for (const key in data) {
-            if (data.hasOwnProperty(key)) {
-                data[key] = _reconstructPacket(data[key], buffers)
-            }
-        }
+  if (data && data._placeholder === true) {
+    const isIndexValid =
+      typeof data.num === "number" &&
+      data.num >= 0 &&
+      data.num < buffers.length;
+    if (isIndexValid) {
+      return buffers[data.num]; // appropriate buffer (should be natural order anyway)
+    } else {
+      throw new Error("illegal attachments");
     }
+  } else if (Array.isArray(data)) {
+    for (let i = 0; i < data.length; i++) {
+      data[i] = _reconstructPacket(data[i], buffers);
+    }
+  } else if (typeof data === "object") {
+    for (const key in data) {
+      if (Object.prototype.hasOwnProperty.call(data, key)) {
+        data[key] = _reconstructPacket(data[key], buffers);
+      }
+    }
+  }
 
-    return data
+  return data;
 }

packages/websocket/src/socket.io-parser/index.ts

@@ -1,8 +1,9 @@
-import EventEmitter = require("events")
-import { deconstructPacket, reconstructPacket } from "./binary"
-import { isBinary, hasBinary } from "./is-binary"
+import { Emitter } from "@socket.io/component-emitter";
+import { deconstructPacket, reconstructPacket } from "./binary.js";
+import { isBinary, hasBinary } from "./is-binary.js";
+// import debugModule from "debug" // debug()
 
-// const debug = require("debug")("socket.io-parser")
+const debug = require("../debug")("socket.io-parser");
 
 /**
  * Protocol version.
@@ -10,24 +11,24 @@ import { isBinary, hasBinary } from "./is-binary"
  * @public
  */
 
-export const protocol: number = 5
+export const protocol: number = 5;
 
 export enum PacketType {
-    CONNECT,
-    DISCONNECT,
-    EVENT,
-    ACK,
-    CONNECT_ERROR,
-    BINARY_EVENT,
-    BINARY_ACK,
+  CONNECT,
+  DISCONNECT,
+  EVENT,
+  ACK,
+  CONNECT_ERROR,
+  BINARY_EVENT,
+  BINARY_ACK,
 }
 
 export interface Packet {
-    type: PacketType
-    nsp: string
-    data?: any
-    id?: number
-    attachments?: number
+  type: PacketType;
+  nsp: string;
+  data?: any;
+  id?: number;
+  attachments?: number;
 }
 
 /**
@@ -35,77 +36,91 @@ export interface Packet {
  */
 
 export class Encoder {
-    /**
-     * Encode a packet as a single string if non-binary, or as a
-     * buffer sequence, depending on packet type.
-     *
-     * @param {Object} obj - packet object
-     */
-    public encode(obj: Packet) {
-        console.trace("encoding packet", JSON.stringify(obj))
+  /**
+   * Encoder constructor
+   *
+   * @param {function} replacer - custom replacer to pass down to JSON.parse
+   */
+  constructor(private replacer?: (this: any, key: string, value: any) => any) {}
+  /**
+   * Encode a packet as a single string if non-binary, or as a
+   * buffer sequence, depending on packet type.
+   *
+   * @param {Object} obj - packet object
+   */
+  public encode(obj: Packet) {
+    debug("encoding packet %j", obj);
 
-        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {
-            if (hasBinary(obj)) {
-                obj.type =
-                    obj.type === PacketType.EVENT
-                        ? PacketType.BINARY_EVENT
-                        : PacketType.BINARY_ACK
-                return this.encodeAsBinary(obj)
-            }
-        }
-        return [this.encodeAsString(obj)]
+    if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {
+      if (hasBinary(obj)) {
+        return this.encodeAsBinary({
+          type:
+            obj.type === PacketType.EVENT
+              ? PacketType.BINARY_EVENT
+              : PacketType.BINARY_ACK,
+          nsp: obj.nsp,
+          data: obj.data,
+          id: obj.id,
+        });
+      }
+    }
+    return [this.encodeAsString(obj)];
+  }
+
+  /**
+   * Encode packet as string.
+   */
+
+  private encodeAsString(obj: Packet) {
+    // first is type
+    let str = "" + obj.type;
+
+    // attachments if we have them
+    if (
+      obj.type === PacketType.BINARY_EVENT ||
+      obj.type === PacketType.BINARY_ACK
+    ) {
+      str += obj.attachments + "-";
     }
 
-    /**
-     * Encode packet as string.
-     */
-
-    private encodeAsString(obj: Packet) {
-        // first is type
-        let str = "" + obj.type
-
-        // attachments if we have them
-        if (
-            obj.type === PacketType.BINARY_EVENT ||
-            obj.type === PacketType.BINARY_ACK
-        ) {
-            str += obj.attachments + "-"
-        }
-
-        // if we have a namespace other than `/`
-        // we append it followed by a comma `,`
-        if (obj.nsp && "/" !== obj.nsp) {
-            str += obj.nsp + ","
-        }
-
-        // immediately followed by the id
-        if (null != obj.id) {
-            str += obj.id
-        }
-
-        // json data
-        if (null != obj.data) {
-            str += JSON.stringify(obj.data)
-        }
-
-        console.trace("encoded", JSON.stringify(obj), "as", str)
-        return str
+    // if we have a namespace other than `/`
+    // we append it followed by a comma `,`
+    if (obj.nsp && "/" !== obj.nsp) {
+      str += obj.nsp + ",";
     }
 
-    /**
-     * Encode packet as 'buffer sequence' by removing blobs, and
-     * deconstructing packet into object with placeholders and
-     * a list of buffers.
-     */
-
-    private encodeAsBinary(obj: Packet) {
-        const deconstruction = deconstructPacket(obj)
-        const pack = this.encodeAsString(deconstruction.packet)
-        const buffers = deconstruction.buffers
-
-        buffers.unshift(pack) // add packet info to beginning of data list
-        return buffers // write all the buffers
+    // immediately followed by the id
+    if (null != obj.id) {
+      str += obj.id;
     }
+
+    // json data
+    if (null != obj.data) {
+      str += JSON.stringify(obj.data, this.replacer);
+    }
+
+    debug("encoded %j as %s", obj, str);
+    return str;
+  }
+
+  /**
+   * Encode packet as 'buffer sequence' by removing blobs, and
+   * deconstructing packet into object with placeholders and
+   * a list of buffers.
+   */
+
+  private encodeAsBinary(obj: Packet) {
+    const deconstruction = deconstructPacket(obj);
+    const pack = this.encodeAsString(deconstruction.packet);
+    const buffers = deconstruction.buffers;
+
+    buffers.unshift(pack); // add packet info to beginning of data list
+    return buffers; // write all the buffers
+  }
+}
+
+interface DecoderReservedEvents {
+  decoded: (packet: Packet) => void;
 }
 
 /**
@@ -113,161 +128,169 @@ export class Encoder {
  *
  * @return {Object} decoder
  */
-export class Decoder extends EventEmitter {
-    private reconstructor: BinaryReconstructor
+export class Decoder extends Emitter<{}, {}, DecoderReservedEvents> {
+  private reconstructor: BinaryReconstructor;
 
-    constructor() {
-        super()
+  /**
+   * Decoder constructor
+   *
+   * @param {function} reviver - custom reviver to pass down to JSON.stringify
+   */
+  constructor(private reviver?: (this: any, key: string, value: any) => any) {
+    super();
+  }
+
+  /**
+   * Decodes an encoded packet string into packet JSON.
+   *
+   * @param {String} obj - encoded packet
+   */
+
+  public add(obj: any) {
+    let packet;
+    if (typeof obj === "string") {
+      if (this.reconstructor) {
+        throw new Error("got plaintext data when reconstructing a packet");
+      }
+      packet = this.decodeString(obj);
+      const isBinaryEvent = packet.type === PacketType.BINARY_EVENT;
+      if (isBinaryEvent || packet.type === PacketType.BINARY_ACK) {
+        packet.type = isBinaryEvent ? PacketType.EVENT : PacketType.ACK;
+        // binary packet's json
+        this.reconstructor = new BinaryReconstructor(packet);
+
+        // no attachments, labeled binary but no binary data to follow
+        if (packet.attachments === 0) {
+          super.emitReserved("decoded", packet);
+        }
+      } else {
+        // non-binary full packet
+        super.emitReserved("decoded", packet);
+      }
+    } else if (isBinary(obj) || obj.base64) {
+      // raw binary data
+      if (!this.reconstructor) {
+        throw new Error("got binary data when not reconstructing a packet");
+      } else {
+        packet = this.reconstructor.takeBinaryData(obj);
+        if (packet) {
+          // received final buffer
+          this.reconstructor = null;
+          super.emitReserved("decoded", packet);
+        }
+      }
+    } else {
+      throw new Error("Unknown type: " + obj);
+    }
+  }
+
+  /**
+   * Decode a packet String (JSON data)
+   *
+   * @param {String} str
+   * @return {Object} packet
+   */
+  private decodeString(str): Packet {
+    let i = 0;
+    // look up type
+    const p: any = {
+      type: Number(str.charAt(0)),
+    };
+
+    if (PacketType[p.type] === undefined) {
+      throw new Error("unknown packet type " + p.type);
     }
 
-    /**
-     * Decodes an encoded packet string into packet JSON.
-     *
-     * @param {String} obj - encoded packet
-     */
-
-    public add(obj: any) {
-        let packet
-        if (typeof obj === "string") {
-            packet = this.decodeString(obj)
-            if (
-                packet.type === PacketType.BINARY_EVENT ||
-                packet.type === PacketType.BINARY_ACK
-            ) {
-                // binary packet's json
-                this.reconstructor = new BinaryReconstructor(packet)
-
-                // no attachments, labeled binary but no binary data to follow
-                if (packet.attachments === 0) {
-                    super.emit("decoded", packet)
-                }
-            } else {
-                // non-binary full packet
-                super.emit("decoded", packet)
-            }
-        } else if (isBinary(obj) || obj.base64) {
-            // raw binary data
-            if (!this.reconstructor) {
-                throw new Error("got binary data when not reconstructing a packet")
-            } else {
-                packet = this.reconstructor.takeBinaryData(obj)
-                if (packet) {
-                    // received final buffer
-                    this.reconstructor = null
-                    super.emit("decoded", packet)
-                }
-            }
-        } else {
-            throw new Error("Unknown type: " + obj)
-        }
+    // look up attachments if type binary
+    if (
+      p.type === PacketType.BINARY_EVENT ||
+      p.type === PacketType.BINARY_ACK
+    ) {
+      const start = i + 1;
+      while (str.charAt(++i) !== "-" && i != str.length) {}
+      const buf = str.substring(start, i);
+      if (buf != Number(buf) || str.charAt(i) !== "-") {
+        throw new Error("Illegal attachments");
+      }
+      p.attachments = Number(buf);
     }
 
-    /**
-     * Decode a packet String (JSON data)
-     *
-     * @param {String} str
-     * @return {Object} packet
-     */
-    private decodeString(str): Packet {
-        let i = 0
-        // look up type
-        const p: any = {
-            type: Number(str.charAt(0)),
-        }
-
-        if (PacketType[p.type] === undefined) {
-            throw new Error("unknown packet type " + p.type)
-        }
-
-        // look up attachments if type binary
-        if (
-            p.type === PacketType.BINARY_EVENT ||
-            p.type === PacketType.BINARY_ACK
-        ) {
-            const start = i + 1
-            while (str.charAt(++i) !== "-" && i != str.length) { }
-            const buf = str.substring(start, i)
-            if (buf != Number(buf) || str.charAt(i) !== "-") {
-                throw new Error("Illegal attachments")
-            }
-            p.attachments = Number(buf)
-        }
-
-        // look up namespace (if any)
-        if ("/" === str.charAt(i + 1)) {
-            const start = i + 1
-            while (++i) {
-                const c = str.charAt(i)
-                if ("," === c) break
-                if (i === str.length) break
-            }
-            p.nsp = str.substring(start, i)
-        } else {
-            p.nsp = "/"
-        }
-
-        // look up id
-        const next = str.charAt(i + 1)
-        if ("" !== next && Number(next) == next) {
-            const start = i + 1
-            while (++i) {
-                const c = str.charAt(i)
-                if (null == c || Number(c) != c) {
-                    --i
-                    break
-                }
-                if (i === str.length) break
-            }
-            p.id = Number(str.substring(start, i + 1))
-        }
-
-        // look up json data
-        if (str.charAt(++i)) {
-            const payload = tryParse(str.substr(i))
-            if (Decoder.isPayloadValid(p.type, payload)) {
-                p.data = payload
-            } else {
-                throw new Error("invalid payload")
-            }
-        }
-
-        console.trace("decoded", str, "as", p)
-        return p
+    // look up namespace (if any)
+    if ("/" === str.charAt(i + 1)) {
+      const start = i + 1;
+      while (++i) {
+        const c = str.charAt(i);
+        if ("," === c) break;
+        if (i === str.length) break;
+      }
+      p.nsp = str.substring(start, i);
+    } else {
+      p.nsp = "/";
     }
 
-    private static isPayloadValid(type: PacketType, payload: any): boolean {
-        switch (type) {
-            case PacketType.CONNECT:
-                return typeof payload === "object"
-            case PacketType.DISCONNECT:
-                return payload === undefined
-            case PacketType.CONNECT_ERROR:
-                return typeof payload === "string" || typeof payload === "object"
-            case PacketType.EVENT:
-            case PacketType.BINARY_EVENT:
-                return Array.isArray(payload) && payload.length > 0
-            case PacketType.ACK:
-            case PacketType.BINARY_ACK:
-                return Array.isArray(payload)
+    // look up id
+    const next = str.charAt(i + 1);
+    if ("" !== next && Number(next) == next) {
+      const start = i + 1;
+      while (++i) {
+        const c = str.charAt(i);
+        if (null == c || Number(c) != c) {
+          --i;
+          break;
         }
+        if (i === str.length) break;
+      }
+      p.id = Number(str.substring(start, i + 1));
     }
 
-    /**
-     * Deallocates a parser's resources
-     */
-    public destroy() {
-        if (this.reconstructor) {
-            this.reconstructor.finishedReconstruction()
-        }
+    // look up json data
+    if (str.charAt(++i)) {
+      const payload = this.tryParse(str.substr(i));
+      if (Decoder.isPayloadValid(p.type, payload)) {
+        p.data = payload;
+      } else {
+        throw new Error("invalid payload");
+      }
     }
-}
 
-function tryParse(str) {
+    debug("decoded %s as %j", str, p);
+    return p;
+  }
+
+  private tryParse(str) {
     try {
-        return JSON.parse(str)
-    } catch (error: any) {
-        return false
+      return JSON.parse(str, this.reviver);
+    } catch (e) {
+      return false;
     }
+  }
+
+  private static isPayloadValid(type: PacketType, payload: any): boolean {
+    switch (type) {
+      case PacketType.CONNECT:
+        return typeof payload === "object";
+      case PacketType.DISCONNECT:
+        return payload === undefined;
+      case PacketType.CONNECT_ERROR:
+        return typeof payload === "string" || typeof payload === "object";
+      case PacketType.EVENT:
+      case PacketType.BINARY_EVENT:
+        return Array.isArray(payload) && payload.length > 0;
+      case PacketType.ACK:
+      case PacketType.BINARY_ACK:
+        return Array.isArray(payload);
+    }
+  }
+
+  /**
+   * Deallocates a parser's resources
+   */
+  public destroy() {
+    if (this.reconstructor) {
+      this.reconstructor.finishedReconstruction();
+      this.reconstructor = null;
+    }
+  }
 }
 
 /**
@@ -280,37 +303,37 @@ function tryParse(str) {
  */
 
 class BinaryReconstructor {
-    private reconPack
-    private buffers: Array<Buffer | ArrayBuffer> = [];
+  private reconPack;
+  private buffers: Array<Buffer | ArrayBuffer> = [];
 
-    constructor(readonly packet: Packet) {
-        this.reconPack = packet
-    }
+  constructor(readonly packet: Packet) {
+    this.reconPack = packet;
+  }
 
-    /**
-     * Method to be called when binary data received from connection
-     * after a BINARY_EVENT packet.
-     *
-     * @param {Buffer | ArrayBuffer} binData - the raw binary data received
-     * @return {null | Object} returns null if more binary data is expected or
-     *   a reconstructed packet object if all buffers have been received.
-     */
-    public takeBinaryData(binData) {
-        this.buffers.push(binData)
-        if (this.buffers.length === this.reconPack.attachments) {
-            // done with buffer list
-            const packet = reconstructPacket(this.reconPack, this.buffers)
-            this.finishedReconstruction()
-            return packet
-        }
-        return null
+  /**
+   * Method to be called when binary data received from connection
+   * after a BINARY_EVENT packet.
+   *
+   * @param {Buffer | ArrayBuffer} binData - the raw binary data received
+   * @return {null | Object} returns null if more binary data is expected or
+   *   a reconstructed packet object if all buffers have been received.
+   */
+  public takeBinaryData(binData) {
+    this.buffers.push(binData);
+    if (this.buffers.length === this.reconPack.attachments) {
+      // done with buffer list
+      const packet = reconstructPacket(this.reconPack, this.buffers);
+      this.finishedReconstruction();
+      return packet;
     }
+    return null;
+  }
 
-    /**
-     * Cleans up binary packet reconstruction variables.
-     */
-    public finishedReconstruction() {
-        this.reconPack = null
-        this.buffers = []
-    }
+  /**
+   * Cleans up binary packet reconstruction variables.
+   */
+  public finishedReconstruction() {
+    this.reconPack = null;
+    this.buffers = [];
+  }
 }

packages/websocket/src/socket.io-parser/is-binary.ts

@@ -1,20 +1,20 @@
-const withNativeArrayBuffer: boolean = typeof ArrayBuffer === "function"
+const withNativeArrayBuffer: boolean = typeof ArrayBuffer === "function";
 
 const isView = (obj: any) => {
-    return typeof ArrayBuffer.isView === "function"
-        ? ArrayBuffer.isView(obj)
-        : obj.buffer instanceof ArrayBuffer
-}
+  return typeof ArrayBuffer.isView === "function"
+    ? ArrayBuffer.isView(obj)
+    : obj.buffer instanceof ArrayBuffer;
+};
 
-const toString = Object.prototype.toString
-const withNativeBlob = false
-// typeof Blob === "function" ||
-// (typeof Blob !== "undefined" &&
-//     toString.call(Blob) === "[object BlobConstructor]")
-const withNativeFile = false
-// typeof File === "function" ||
-// (typeof File !== "undefined" &&
-//     toString.call(File) === "[object FileConstructor]")
+const toString = Object.prototype.toString;
+const withNativeBlob =
+  typeof Blob === "function" ||
+  (typeof Blob !== "undefined" &&
+    toString.call(Blob) === "[object BlobConstructor]");
+const withNativeFile =
+  typeof File === "function" ||
+  (typeof File !== "undefined" &&
+    toString.call(File) === "[object FileConstructor]");
 
 /**
  * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
@@ -23,43 +23,44 @@ const withNativeFile = false
  */
 
 export function isBinary(obj: any) {
-    return (
-        (withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj)))
-        // || (withNativeBlob && obj instanceof Blob) || (withNativeFile && obj instanceof File)
-    )
+  return (
+    (withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||
+    (withNativeBlob && obj instanceof Blob) ||
+    (withNativeFile && obj instanceof File)
+  );
 }
 
 export function hasBinary(obj: any, toJSON?: boolean) {
-    if (!obj || typeof obj !== "object") {
-        return false
-    }
+  if (!obj || typeof obj !== "object") {
+    return false;
+  }
 
-    if (Array.isArray(obj)) {
-        for (let i = 0, l = obj.length; i < l; i++) {
-            if (hasBinary(obj[i])) {
-                return true
-            }
-        }
-        return false
+  if (Array.isArray(obj)) {
+    for (let i = 0, l = obj.length; i < l; i++) {
+      if (hasBinary(obj[i])) {
+        return true;
+      }
     }
+    return false;
+  }
 
-    if (isBinary(obj)) {
-        return true
+  if (isBinary(obj)) {
+    return true;
+  }
+
+  if (
+    obj.toJSON &&
+    typeof obj.toJSON === "function" &&
+    arguments.length === 1
+  ) {
+    return hasBinary(obj.toJSON(), true);
+  }
+
+  for (const key in obj) {
+    if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
+      return true;
     }
+  }
 
-    if (
-        obj.toJSON &&
-        typeof obj.toJSON === "function" &&
-        arguments.length === 1
-    ) {
-        return hasBinary(obj.toJSON(), true)
-    }
-
-    for (const key in obj) {
-        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
-            return true
-        }
-    }
-
-    return false
+  return false;
 }

packages/websocket/src/socket.io/broadcast-operator.ts

@@ -1,320 +1,561 @@
-// import type { BroadcastFlags, Room, SocketId } from "socket.io-adapter"
-import type { BroadcastFlags, Room, SocketId } from "../socket.io-adapter"
-import { Handshake, RESERVED_EVENTS, Socket } from "./socket"
-// import { PacketType } from "socket.io-parser"
-import { PacketType } from "../socket.io-parser"
-// import type { Adapter } from "socket.io-adapter"
-import type { Adapter } from "../socket.io-adapter"
+import type { BroadcastFlags, Room, SocketId } from "../socket.io-adapter";
+import { Handshake, RESERVED_EVENTS, Socket } from "./socket";
+import { PacketType } from "../socket.io-parser";
+import type { Adapter } from "../socket.io-adapter";
 import type {
-    EventParams,
-    EventNames,
-    EventsMap,
-    TypedEventBroadcaster,
-} from "./typed-events"
+  EventParams,
+  EventNames,
+  EventsMap,
+  TypedEventBroadcaster,
+  DecorateAcknowledgements,
+  DecorateAcknowledgementsWithTimeoutAndMultipleResponses,
+  AllButLast,
+  Last,
+  SecondArg,
+} from "./typed-events";
 
-export class BroadcastOperator<EmitEvents extends EventsMap>
-    implements TypedEventBroadcaster<EmitEvents>
+export class BroadcastOperator<EmitEvents extends EventsMap, SocketData>
+  implements TypedEventBroadcaster<EmitEvents>
 {
-    constructor(
-        private readonly adapter: Adapter,
-        private readonly rooms: Set<Room> = new Set<Room>(),
-        private readonly exceptRooms: Set<Room> = new Set<Room>(),
-        private readonly flags: BroadcastFlags = {}
-    ) { }
+  constructor(
+    private readonly adapter: Adapter,
+    private readonly rooms: Set<Room> = new Set<Room>(),
+    private readonly exceptRooms: Set<Room> = new Set<Room>(),
+    private readonly flags: BroadcastFlags & {
+      expectSingleResponse?: boolean;
+    } = {}
+  ) {}
 
-    /**
-     * Targets a room when emitting.
-     *
-     * @param room
-     * @return a new BroadcastOperator instance
-     * @public
-     */
-    public to(room: Room | Room[]): BroadcastOperator<EmitEvents> {
-        const rooms = new Set(this.rooms)
-        if (Array.isArray(room)) {
-            room.forEach((r) => rooms.add(r))
+  /**
+   * Targets a room when emitting.
+   *
+   * @example
+   * // the “foo” event will be broadcast to all connected clients in the “room-101” room
+   * io.to("room-101").emit("foo", "bar");
+   *
+   * // with an array of rooms (a client will be notified at most once)
+   * io.to(["room-101", "room-102"]).emit("foo", "bar");
+   *
+   * // with multiple chained calls
+   * io.to("room-101").to("room-102").emit("foo", "bar");
+   *
+   * @param room - a room, or an array of rooms
+   * @return a new {@link BroadcastOperator} instance for chaining
+   */
+  public to(room: Room | Room[]) {
+    const rooms = new Set(this.rooms);
+    if (Array.isArray(room)) {
+      room.forEach((r) => rooms.add(r));
+    } else {
+      rooms.add(room);
+    }
+    return new BroadcastOperator<EmitEvents, SocketData>(
+      this.adapter,
+      rooms,
+      this.exceptRooms,
+      this.flags
+    );
+  }
+
+  /**
+   * Targets a room when emitting. Similar to `to()`, but might feel clearer in some cases:
+   *
+   * @example
+   * // disconnect all clients in the "room-101" room
+   * io.in("room-101").disconnectSockets();
+   *
+   * @param room - a room, or an array of rooms
+   * @return a new {@link BroadcastOperator} instance for chaining
+   */
+  public in(room: Room | Room[]) {
+    return this.to(room);
+  }
+
+  /**
+   * Excludes a room when emitting.
+   *
+   * @example
+   * // the "foo" event will be broadcast to all connected clients, except the ones that are in the "room-101" room
+   * io.except("room-101").emit("foo", "bar");
+   *
+   * // with an array of rooms
+   * io.except(["room-101", "room-102"]).emit("foo", "bar");
+   *
+   * // with multiple chained calls
+   * io.except("room-101").except("room-102").emit("foo", "bar");
+   *
+   * @param room - a room, or an array of rooms
+   * @return a new {@link BroadcastOperator} instance for chaining
+   */
+  public except(room: Room | Room[]) {
+    const exceptRooms = new Set(this.exceptRooms);
+    if (Array.isArray(room)) {
+      room.forEach((r) => exceptRooms.add(r));
+    } else {
+      exceptRooms.add(room);
+    }
+    return new BroadcastOperator<EmitEvents, SocketData>(
+      this.adapter,
+      this.rooms,
+      exceptRooms,
+      this.flags
+    );
+  }
+
+  /**
+   * Sets the compress flag.
+   *
+   * @example
+   * io.compress(false).emit("hello");
+   *
+   * @param compress - if `true`, compresses the sending data
+   * @return a new BroadcastOperator instance
+   */
+  public compress(compress: boolean) {
+    const flags = Object.assign({}, this.flags, { compress });
+    return new BroadcastOperator<EmitEvents, SocketData>(
+      this.adapter,
+      this.rooms,
+      this.exceptRooms,
+      flags
+    );
+  }
+
+  /**
+   * Sets a modifier for a subsequent event emission that the event data may be lost if the client is not ready to
+   * receive messages (because of network slowness or other issues, or because they’re connected through long polling
+   * and is in the middle of a request-response cycle).
+   *
+   * @example
+   * io.volatile.emit("hello"); // the clients may or may not receive it
+   *
+   * @return a new BroadcastOperator instance
+   */
+  public get volatile() {
+    const flags = Object.assign({}, this.flags, { volatile: true });
+    return new BroadcastOperator<EmitEvents, SocketData>(
+      this.adapter,
+      this.rooms,
+      this.exceptRooms,
+      flags
+    );
+  }
+
+  /**
+   * Sets a modifier for a subsequent event emission that the event data will only be broadcast to the current node.
+   *
+   * @example
+   * // the “foo” event will be broadcast to all connected clients on this node
+   * io.local.emit("foo", "bar");
+   *
+   * @return a new {@link BroadcastOperator} instance for chaining
+   */
+  public get local() {
+    const flags = Object.assign({}, this.flags, { local: true });
+    return new BroadcastOperator<EmitEvents, SocketData>(
+      this.adapter,
+      this.rooms,
+      this.exceptRooms,
+      flags
+    );
+  }
+
+  /**
+   * Adds a timeout in milliseconds for the next operation
+   *
+   * @example
+   * io.timeout(1000).emit("some-event", (err, responses) => {
+   *   if (err) {
+   *     // some clients did not acknowledge the event in the given delay
+   *   } else {
+   *     console.log(responses); // one response per client
+   *   }
+   * });
+   *
+   * @param timeout
+   */
+  public timeout(timeout: number) {
+    const flags = Object.assign({}, this.flags, { timeout });
+    return new BroadcastOperator<
+      DecorateAcknowledgementsWithTimeoutAndMultipleResponses<EmitEvents>,
+      SocketData
+    >(this.adapter, this.rooms, this.exceptRooms, flags);
+  }
+
+  /**
+   * Emits to all clients.
+   *
+   * @example
+   * // the “foo” event will be broadcast to all connected clients
+   * io.emit("foo", "bar");
+   *
+   * // the “foo” event will be broadcast to all connected clients in the “room-101” room
+   * io.to("room-101").emit("foo", "bar");
+   *
+   * // with an acknowledgement expected from all connected clients
+   * io.timeout(1000).emit("some-event", (err, responses) => {
+   *   if (err) {
+   *     // some clients did not acknowledge the event in the given delay
+   *   } else {
+   *     console.log(responses); // one response per client
+   *   }
+   * });
+   *
+   * @return Always true
+   */
+  public emit<Ev extends EventNames<EmitEvents>>(
+    ev: Ev,
+    ...args: EventParams<EmitEvents, Ev>
+  ): boolean {
+    if (RESERVED_EVENTS.has(ev)) {
+      throw new Error(`"${String(ev)}" is a reserved event name`);
+    }
+    // set up packet object
+    const data = [ev, ...args];
+    const packet = {
+      type: PacketType.EVENT,
+      data: data,
+    };
+
+    const withAck = typeof data[data.length - 1] === "function";
+
+    if (!withAck) {
+      this.adapter.broadcast(packet, {
+        rooms: this.rooms,
+        except: this.exceptRooms,
+        flags: this.flags,
+      });
+
+      return true;
+    }
+
+    const ack = data.pop() as (...args: any[]) => void;
+    let timedOut = false;
+    let responses: any[] = [];
+
+    const timer = setTimeout(() => {
+      timedOut = true;
+      ack.apply(this, [
+        new Error("operation has timed out"),
+        this.flags.expectSingleResponse ? null : responses,
+      ]);
+    }, this.flags.timeout);
+
+    let expectedServerCount = -1;
+    let actualServerCount = 0;
+    let expectedClientCount = 0;
+
+    const checkCompleteness = () => {
+      if (
+        !timedOut &&
+        expectedServerCount === actualServerCount &&
+        responses.length === expectedClientCount
+      ) {
+        clearTimeout(timer);
+        ack.apply(this, [
+          null,
+          this.flags.expectSingleResponse ? null : responses,
+        ]);
+      }
+    };
+
+    this.adapter.broadcastWithAck(
+      packet,
+      {
+        rooms: this.rooms,
+        except: this.exceptRooms,
+        flags: this.flags,
+      },
+      (clientCount) => {
+        // each Socket.IO server in the cluster sends the number of clients that were notified
+        expectedClientCount += clientCount;
+        actualServerCount++;
+        checkCompleteness();
+      },
+      (clientResponse) => {
+        // each client sends an acknowledgement
+        responses.push(clientResponse);
+        checkCompleteness();
+      }
+    );
+
+    this.adapter.serverCount().then((serverCount) => {
+      expectedServerCount = serverCount;
+      checkCompleteness();
+    });
+
+    return true;
+  }
+
+  /**
+   * Emits an event and waits for an acknowledgement from all clients.
+   *
+   * @example
+   * try {
+   *   const responses = await io.timeout(1000).emitWithAck("some-event");
+   *   console.log(responses); // one response per client
+   * } catch (e) {
+   *   // some clients did not acknowledge the event in the given delay
+   * }
+   *
+   * @return a Promise that will be fulfilled when all clients have acknowledged the event
+   */
+  public emitWithAck<Ev extends EventNames<EmitEvents>>(
+    ev: Ev,
+    ...args: AllButLast<EventParams<EmitEvents, Ev>>
+  ): Promise<SecondArg<Last<EventParams<EmitEvents, Ev>>>> {
+    return new Promise((resolve, reject) => {
+      args.push((err, responses) => {
+        if (err) {
+          err.responses = responses;
+          return reject(err);
         } else {
-            rooms.add(room)
+          return resolve(responses);
         }
-        return new BroadcastOperator(
-            this.adapter,
-            rooms,
-            this.exceptRooms,
-            this.flags
-        )
+      });
+      this.emit(ev, ...(args as any[] as EventParams<EmitEvents, Ev>));
+    });
+  }
+
+  /**
+   * Gets a list of clients.
+   *
+   * @deprecated this method will be removed in the next major release, please use {@link Server#serverSideEmit} or
+   * {@link fetchSockets} instead.
+   */
+  public allSockets(): Promise<Set<SocketId>> {
+    if (!this.adapter) {
+      throw new Error(
+        "No adapter for this namespace, are you trying to get the list of clients of a dynamic namespace?"
+      );
     }
+    return this.adapter.sockets(this.rooms);
+  }
 
-    /**
-     * Targets a room when emitting.
-     *
-     * @param room
-     * @return a new BroadcastOperator instance
-     * @public
-     */
-    public in(room: Room | Room[]): BroadcastOperator<EmitEvents> {
-        return this.to(room)
-    }
+  /**
+   * Returns the matching socket instances. This method works across a cluster of several Socket.IO servers.
+   *
+   * Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
+   *
+   * @example
+   * // return all Socket instances
+   * const sockets = await io.fetchSockets();
+   *
+   * // return all Socket instances in the "room1" room
+   * const sockets = await io.in("room1").fetchSockets();
+   *
+   * for (const socket of sockets) {
+   *   console.log(socket.id);
+   *   console.log(socket.handshake);
+   *   console.log(socket.rooms);
+   *   console.log(socket.data);
+   *
+   *   socket.emit("hello");
+   *   socket.join("room1");
+   *   socket.leave("room2");
+   *   socket.disconnect();
+   * }
+   */
+  public fetchSockets(): Promise<RemoteSocket<EmitEvents, SocketData>[]> {
+    return this.adapter
+      .fetchSockets({
+        rooms: this.rooms,
+        except: this.exceptRooms,
+        flags: this.flags,
+      })
+      .then((sockets) => {
+        return sockets.map((socket) => {
+          if (socket instanceof Socket) {
+            // FIXME the TypeScript compiler complains about missing private properties
+            return socket as unknown as RemoteSocket<EmitEvents, SocketData>;
+          } else {
+            return new RemoteSocket(
+              this.adapter,
+              socket as SocketDetails<SocketData>
+            );
+          }
+        });
+      });
+  }
 
-    /**
-     * Excludes a room when emitting.
-     *
-     * @param room
-     * @return a new BroadcastOperator instance
-     * @public
-     */
-    public except(room: Room | Room[]): BroadcastOperator<EmitEvents> {
-        const exceptRooms = new Set(this.exceptRooms)
-        if (Array.isArray(room)) {
-            room.forEach((r) => exceptRooms.add(r))
-        } else {
-            exceptRooms.add(room)
-        }
-        return new BroadcastOperator(
-            this.adapter,
-            this.rooms,
-            exceptRooms,
-            this.flags
-        )
-    }
+  /**
+   * Makes the matching socket instances join the specified rooms.
+   *
+   * Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
+   *
+   * @example
+   *
+   * // make all socket instances join the "room1" room
+   * io.socketsJoin("room1");
+   *
+   * // make all socket instances in the "room1" room join the "room2" and "room3" rooms
+   * io.in("room1").socketsJoin(["room2", "room3"]);
+   *
+   * @param room - a room, or an array of rooms
+   */
+  public socketsJoin(room: Room | Room[]): void {
+    this.adapter.addSockets(
+      {
+        rooms: this.rooms,
+        except: this.exceptRooms,
+        flags: this.flags,
+      },
+      Array.isArray(room) ? room : [room]
+    );
+  }
 
-    /**
-     * Sets the compress flag.
-     *
-     * @param compress - if `true`, compresses the sending data
-     * @return a new BroadcastOperator instance
-     * @public
-     */
-    public compress(compress: boolean): BroadcastOperator<EmitEvents> {
-        const flags = Object.assign({}, this.flags, { compress })
-        return new BroadcastOperator(
-            this.adapter,
-            this.rooms,
-            this.exceptRooms,
-            flags
-        )
-    }
+  /**
+   * Makes the matching socket instances leave the specified rooms.
+   *
+   * Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
+   *
+   * @example
+   * // make all socket instances leave the "room1" room
+   * io.socketsLeave("room1");
+   *
+   * // make all socket instances in the "room1" room leave the "room2" and "room3" rooms
+   * io.in("room1").socketsLeave(["room2", "room3"]);
+   *
+   * @param room - a room, or an array of rooms
+   */
+  public socketsLeave(room: Room | Room[]): void {
+    this.adapter.delSockets(
+      {
+        rooms: this.rooms,
+        except: this.exceptRooms,
+        flags: this.flags,
+      },
+      Array.isArray(room) ? room : [room]
+    );
+  }
 
-    /**
-     * Sets a modifier for a subsequent event emission that the event data may be lost if the client is not ready to
-     * receive messages (because of network slowness or other issues, or because they’re connected through long polling
-     * and is in the middle of a request-response cycle).
-     *
-     * @return a new BroadcastOperator instance
-     * @public
-     */
-    public get volatile(): BroadcastOperator<EmitEvents> {
-        const flags = Object.assign({}, this.flags, { volatile: true })
-        return new BroadcastOperator(
-            this.adapter,
-            this.rooms,
-            this.exceptRooms,
-            flags
-        )
-    }
-
-    /**
-     * Sets a modifier for a subsequent event emission that the event data will only be broadcast to the current node.
-     *
-     * @return a new BroadcastOperator instance
-     * @public
-     */
-    public get local(): BroadcastOperator<EmitEvents> {
-        const flags = Object.assign({}, this.flags, { local: true })
-        return new BroadcastOperator(
-            this.adapter,
-            this.rooms,
-            this.exceptRooms,
-            flags
-        )
-    }
-
-    /**
-     * Emits to all clients.
-     *
-     * @return Always true
-     * @public
-     */
-    public emit<Ev extends EventNames<EmitEvents>>(
-        ev: Ev,
-        ...args: EventParams<EmitEvents, Ev>
-    ): boolean {
-        if (RESERVED_EVENTS.has(ev)) {
-            throw new Error(`"${ev}" is a reserved event name`)
-        }
-        // set up packet object
-        const data = [ev, ...args]
-        const packet = {
-            type: PacketType.EVENT,
-            data: data,
-        }
-
-        if ("function" == typeof data[data.length - 1]) {
-            throw new Error("Callbacks are not supported when broadcasting")
-        }
-
-        this.adapter.broadcast(packet, {
-            rooms: this.rooms,
-            except: this.exceptRooms,
-            flags: this.flags,
-        })
-
-        return true
-    }
-
-    /**
-     * Gets a list of clients.
-     *
-     * @public
-     */
-    public allSockets(): Promise<Set<SocketId>> {
-        if (!this.adapter) {
-            throw new Error(
-                "No adapter for this namespace, are you trying to get the list of clients of a dynamic namespace?"
-            )
-        }
-        return this.adapter.sockets(this.rooms)
-    }
-
-    /**
-     * Returns the matching socket instances
-     *
-     * @public
-     */
-    public fetchSockets(): Promise<RemoteSocket<EmitEvents>[]> {
-        return this.adapter
-            .fetchSockets({
-                rooms: this.rooms,
-                except: this.exceptRooms,
-            })
-            .then((sockets) => {
-                return sockets.map((socket) => {
-                    if (socket instanceof Socket) {
-                        // FIXME the TypeScript compiler complains about missing private properties
-                        return socket as unknown as RemoteSocket<EmitEvents>
-                    } else {
-                        return new RemoteSocket(this.adapter, socket as SocketDetails)
-                    }
-                })
-            })
-    }
-
-    /**
-     * Makes the matching socket instances join the specified rooms
-     *
-     * @param room
-     * @public
-     */
-    public socketsJoin(room: Room | Room[]): void {
-        this.adapter.addSockets(
-            {
-                rooms: this.rooms,
-                except: this.exceptRooms,
-            },
-            Array.isArray(room) ? room : [room]
-        )
-    }
-
-    /**
-     * Makes the matching socket instances leave the specified rooms
-     *
-     * @param room
-     * @public
-     */
-    public socketsLeave(room: Room | Room[]): void {
-        this.adapter.delSockets(
-            {
-                rooms: this.rooms,
-                except: this.exceptRooms,
-            },
-            Array.isArray(room) ? room : [room]
-        )
-    }
-
-    /**
-     * Makes the matching socket instances disconnect
-     *
-     * @param close - whether to close the underlying connection
-     * @public
-     */
-    public disconnectSockets(close: boolean = false): void {
-        this.adapter.disconnectSockets(
-            {
-                rooms: this.rooms,
-                except: this.exceptRooms,
-            },
-            close
-        )
-    }
+  /**
+   * Makes the matching socket instances disconnect.
+   *
+   * Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
+   *
+   * @example
+   * // make all socket instances disconnect (the connections might be kept alive for other namespaces)
+   * io.disconnectSockets();
+   *
+   * // make all socket instances in the "room1" room disconnect and close the underlying connections
+   * io.in("room1").disconnectSockets(true);
+   *
+   * @param close - whether to close the underlying connection
+   */
+  public disconnectSockets(close: boolean = false): void {
+    this.adapter.disconnectSockets(
+      {
+        rooms: this.rooms,
+        except: this.exceptRooms,
+        flags: this.flags,
+      },
+      close
+    );
+  }
 }
 
 /**
  * Format of the data when the Socket instance exists on another Socket.IO server
  */
-interface SocketDetails {
-    id: SocketId
-    handshake: Handshake
-    rooms: Room[]
-    data: any
+interface SocketDetails<SocketData> {
+  id: SocketId;
+  handshake: Handshake;
+  rooms: Room[];
+  data: SocketData;
 }
 
 /**
  * Expose of subset of the attributes and methods of the Socket class
  */
-export class RemoteSocket<EmitEvents extends EventsMap>
-    implements TypedEventBroadcaster<EmitEvents>
+export class RemoteSocket<EmitEvents extends EventsMap, SocketData>
+  implements TypedEventBroadcaster<EmitEvents>
 {
-    public readonly id: SocketId
-    public readonly handshake: Handshake
-    public readonly rooms: Set<Room>
-    public readonly data: any
+  public readonly id: SocketId;
+  public readonly handshake: Handshake;
+  public readonly rooms: Set<Room>;
+  public readonly data: SocketData;
 
-    private readonly operator: BroadcastOperator<EmitEvents>
+  private readonly operator: BroadcastOperator<EmitEvents, SocketData>;
 
-    constructor(adapter: Adapter, details: SocketDetails) {
-        this.id = details.id
-        this.handshake = details.handshake
-        this.rooms = new Set(details.rooms)
-        this.data = details.data
-        this.operator = new BroadcastOperator(adapter, new Set([this.id]))
-    }
+  constructor(adapter: Adapter, details: SocketDetails<SocketData>) {
+    this.id = details.id;
+    this.handshake = details.handshake;
+    this.rooms = new Set(details.rooms);
+    this.data = details.data;
+    this.operator = new BroadcastOperator<EmitEvents, SocketData>(
+      adapter,
+      new Set([this.id]),
+      new Set(),
+      {
+        expectSingleResponse: true, // so that remoteSocket.emit() with acknowledgement behaves like socket.emit()
+      }
+    );
+  }
 
-    public emit<Ev extends EventNames<EmitEvents>>(
-        ev: Ev,
-        ...args: EventParams<EmitEvents, Ev>
-    ): boolean {
-        return this.operator.emit(ev, ...args)
-    }
+  /**
+   * Adds a timeout in milliseconds for the next operation.
+   *
+   * @example
+   * const sockets = await io.fetchSockets();
+   *
+   * for (const socket of sockets) {
+   *   if (someCondition) {
+   *     socket.timeout(1000).emit("some-event", (err) => {
+   *       if (err) {
+   *         // the client did not acknowledge the event in the given delay
+   *       }
+   *     });
+   *   }
+   * }
+   *
+   * // note: if possible, using a room instead of looping over all sockets is preferable
+   * io.timeout(1000).to(someConditionRoom).emit("some-event", (err, responses) => {
+   *   // ...
+   * });
+   *
+   * @param timeout
+   */
+  public timeout(timeout: number) {
+    return this.operator.timeout(timeout) as BroadcastOperator<
+      DecorateAcknowledgements<EmitEvents>,
+      SocketData
+    >;
+  }
 
-    /**
-     * Joins a room.
-     *
-     * @param {String|Array} room - room or array of rooms
-     * @public
-     */
-    public join(room: Room | Room[]): void {
-        return this.operator.socketsJoin(room)
-    }
+  public emit<Ev extends EventNames<EmitEvents>>(
+    ev: Ev,
+    ...args: EventParams<EmitEvents, Ev>
+  ): boolean {
+    return this.operator.emit(ev, ...args);
+  }
 
-    /**
-     * Leaves a room.
-     *
-     * @param {String} room
-     * @public
-     */
-    public leave(room: Room): void {
-        return this.operator.socketsLeave(room)
-    }
+  /**
+   * Joins a room.
+   *
+   * @param {String|Array} room - room or array of rooms
+   */
+  public join(room: Room | Room[]): void {
+    return this.operator.socketsJoin(room);
+  }
 
-    /**
-     * Disconnects this client.
-     *
-     * @param {Boolean} close - if `true`, closes the underlying connection
-     * @return {Socket} self
-     *
-     * @public
-     */
-    public disconnect(close = false): this {
-        this.operator.disconnectSockets(close)
-        return this
-    }
+  /**
+   * Leaves a room.
+   *
+   * @param {String} room
+   */
+  public leave(room: Room): void {
+    return this.operator.socketsLeave(room);
+  }
+
+  /**
+   * Disconnects this client.
+   *
+   * @param {Boolean} close - if `true`, closes the underlying connection
+   * @return {Socket} self
+   */
+  public disconnect(close = false): this {
+    this.operator.disconnectSockets(close);
+    return this;
+  }
 }

packages/websocket/src/socket.io/client.ts

@@ -1,331 +1,353 @@
-// import { Decoder, Encoder, Packet, PacketType } from "socket.io-parser"
-import { Decoder, Encoder, Packet, PacketType } from "../socket.io-parser"
+import { Decoder, Encoder, Packet, PacketType } from "../socket.io-parser";
 // import debugModule = require("debug")
-import url = require("url")
+import url = require("url");
 // import type { IncomingMessage } from "http"
-import type { Server } from "./index"
-import type { Namespace } from "./namespace"
-import type { EventsMap } from "./typed-events"
-import type { Socket } from "./socket"
-// import type { SocketId } from "socket.io-adapter"
-import type { SocketId } from "../socket.io-adapter"
-import type { Socket as EngineIOSocket } from '../engine.io/socket'
+import type { Server } from "./index";
+import type { Namespace } from "./namespace";
+import type { EventsMap } from "./typed-events";
+import type { Socket } from "./socket";
+import type { SocketId } from "../socket.io-adapter";
+import type { Socket as RawSocket } from "../engine.io/socket";
 
-// const debug = debugModule("socket.io:client");
+const debug = require("../debug")("socket.io:client");
 
 interface WriteOptions {
-    compress?: boolean
-    volatile?: boolean
-    preEncoded?: boolean
-    wsPreEncoded?: string
+  compress?: boolean;
+  volatile?: boolean;
+  preEncoded?: boolean;
+  wsPreEncoded?: string;
 }
 
+type CloseReason =
+  | "transport error"
+  | "transport close"
+  | "forced close"
+  | "ping timeout"
+  | "parse error";
+
 export class Client<
-    ListenEvents extends EventsMap,
-    EmitEvents extends EventsMap,
-    ServerSideEvents extends EventsMap
-    > {
-    public readonly conn: EngineIOSocket
-    /**
-     * @private
-     */
-    readonly id: string
-    private readonly server: Server<ListenEvents, EmitEvents, ServerSideEvents>
-    private readonly encoder: Encoder
-    private readonly decoder: any
-    private sockets: Map<
-        SocketId,
-        Socket<ListenEvents, EmitEvents, ServerSideEvents>
-    > = new Map()
-    private nsps: Map<
-        string,
-        Socket<ListenEvents, EmitEvents, ServerSideEvents>
-    > = new Map()
-    private connectTimeout: NodeJS.Timeout
+  ListenEvents extends EventsMap,
+  EmitEvents extends EventsMap,
+  ServerSideEvents extends EventsMap,
+  SocketData = any
+> {
+  public readonly conn: RawSocket;
 
-    /**
-     * Client constructor.
-     *
-     * @param server instance
-     * @param conn
-     * @package
-     */
-    constructor(
-        server: Server<ListenEvents, EmitEvents, ServerSideEvents>,
-        conn: EngineIOSocket
-    ) {
-        this.server = server
-        this.conn = conn
-        this.encoder = server.encoder
-        this.decoder = new server._parser.Decoder()
-        this.id = conn.id
-        this.setup()
+  private readonly id: string;
+  private readonly server: Server<
+    ListenEvents,
+    EmitEvents,
+    ServerSideEvents,
+    SocketData
+  >;
+  private readonly encoder: Encoder;
+  private readonly decoder: Decoder;
+  private sockets: Map<
+    SocketId,
+    Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>
+  > = new Map();
+  private nsps: Map<
+    string,
+    Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>
+  > = new Map();
+  private connectTimeout?: NodeJS.Timeout;
+
+  /**
+   * Client constructor.
+   *
+   * @param server instance
+   * @param conn
+   * @package
+   */
+  constructor(
+    server: Server<ListenEvents, EmitEvents, ServerSideEvents, SocketData>,
+    conn: any
+  ) {
+    this.server = server;
+    this.conn = conn;
+    this.encoder = server.encoder;
+    this.decoder = new server._parser.Decoder();
+    this.id = conn.id;
+    this.setup();
+  }
+
+  /**
+   * @return the reference to the request that originated the Engine.IO connection
+   *
+   * @public
+   */
+  // public get request(): IncomingMessage {
+  public get request(): any {
+    return this.conn.request;
+  }
+
+  /**
+   * Sets up event listeners.
+   *
+   * @private
+   */
+  private setup() {
+    this.onclose = this.onclose.bind(this);
+    this.ondata = this.ondata.bind(this);
+    this.onerror = this.onerror.bind(this);
+    this.ondecoded = this.ondecoded.bind(this);
+
+    // @ts-ignore
+    this.decoder.on("decoded", this.ondecoded);
+    this.conn.on("data", this.ondata);
+    this.conn.on("error", this.onerror);
+    this.conn.on("close", this.onclose);
+
+    this.connectTimeout = setTimeout(() => {
+      if (this.nsps.size === 0) {
+        debug("no namespace joined yet, close the client");
+        this.close();
+      } else {
+        debug("the client has already joined a namespace, nothing to do");
+      }
+    }, this.server._connectTimeout);
+  }
+
+  /**
+   * Connects a client to a namespace.
+   *
+   * @param {String} name - the namespace
+   * @param {Object} auth - the auth parameters
+   * @private
+   */
+  private connect(name: string, auth: Record<string, unknown> = {}): void {
+    if (this.server._nsps.has(name)) {
+      debug("connecting to namespace %s", name);
+      return this.doConnect(name, auth);
     }
 
-    /**
-     * @return the reference to the request that originated the Engine.IO connection
-     *
-     * @public
-     */
-    public get request(): any/** IncomingMessage */ {
-        return this.conn.request
-    }
-
-    /**
-     * Sets up event listeners.
-     *
-     * @private
-     */
-    private setup() {
-        console.debug(`socket.io client setup conn ${this.conn.id}`)
-        this.onclose = this.onclose.bind(this)
-        this.ondata = this.ondata.bind(this)
-        this.onerror = this.onerror.bind(this)
-        this.ondecoded = this.ondecoded.bind(this)
-
-        // @ts-ignore
-        this.decoder.on("decoded", this.ondecoded)
-        this.conn.on("data", this.ondata)
-        this.conn.on("error", this.onerror)
-        this.conn.on("close", this.onclose)
-
-        this.connectTimeout = setTimeout(() => {
-            if (this.nsps.size === 0) {
-                console.debug(`no namespace joined yet, close the client ${this.id}`)
-                this.close()
-            } else {
-                console.debug(`the client ${this.id} has already joined a namespace, nothing to do`)
-            }
-        }, this.server._connectTimeout)
-    }
-
-    /**
-     * Connects a client to a namespace.
-     *
-     * @param {String} name - the namespace
-     * @param {Object} auth - the auth parameters
-     * @private
-     */
-    private connect(name: string, auth: object = {}): void {
-        if (this.server._nsps.has(name)) {
-            console.debug(`socket.io client ${this.id} connecting to namespace ${name}`)
-            return this.doConnect(name, auth)
-        }
-
-        this.server._checkNamespace(
-            name,
-            auth,
-            (
-                dynamicNspName:
-                    | Namespace<ListenEvents, EmitEvents, ServerSideEvents>
-                    | false
-            ) => {
-                if (dynamicNspName) {
-                    console.debug(`dynamic namespace ${dynamicNspName} was created`)
-                    this.doConnect(name, auth)
-                } else {
-                    console.debug(`creation of namespace ${name} was denied`)
-                    this._packet({
-                        type: PacketType.CONNECT_ERROR,
-                        nsp: name,
-                        data: {
-                            message: "Invalid namespace",
-                        },
-                    })
-                }
-            }
-        )
-    }
-
-    /**
-     * Connects a client to a namespace.
-     *
-     * @param name - the namespace
-     * @param {Object} auth - the auth parameters
-     *
-     * @private
-     */
-    private doConnect(name: string, auth: object): void {
-        const nsp = this.server.of(name)
-
-        // @java-patch multi thread need direct callback socket
-        const socket = nsp._add(this, auth, (socket) => {
-            this.sockets.set(socket.id, socket)
-            this.nsps.set(nsp.name, socket)
-
-            if (this.connectTimeout) {
-                clearTimeout(this.connectTimeout)
-                this.connectTimeout = undefined
-            }
-        })
-    }
-
-    /**
-     * Disconnects from all namespaces and closes transport.
-     *
-     * @private
-     */
-    _disconnect(): void {
-        for (const socket of this.sockets.values()) {
-            socket.disconnect()
-        }
-        this.sockets.clear()
-        this.close()
-    }
-
-    /**
-     * Removes a socket. Called by each `Socket`.
-     *
-     * @private
-     */
-    _remove(socket: Socket<ListenEvents, EmitEvents, ServerSideEvents>): void {
-        if (this.sockets.has(socket.id)) {
-            const nsp = this.sockets.get(socket.id)!.nsp.name
-            this.sockets.delete(socket.id)
-            this.nsps.delete(nsp)
+    this.server._checkNamespace(
+      name,
+      auth,
+      (
+        dynamicNspName:
+          | Namespace<ListenEvents, EmitEvents, ServerSideEvents, SocketData>
+          | false
+      ) => {
+        if (dynamicNspName) {
+          this.doConnect(name, auth);
         } else {
-            console.debug("ignoring remove for", socket.id)
+          debug("creation of namespace %s was denied", name);
+          this._packet({
+            type: PacketType.CONNECT_ERROR,
+            nsp: name,
+            data: {
+              message: "Invalid namespace",
+            },
+          });
         }
-        // @java-patch  disconnect client when no live socket
-        process.nextTick(() => {
-            if (this.sockets.size == 0) {
-                this.onclose('no live socket')
-            }
-        })
-    }
+      }
+    );
+  }
 
-    /**
-     * Closes the underlying connection.
-     *
-     * @private
-     */
-    private close(): void {
-        console.debug(`client ${this.id} close - reason: forcing transport close`)
-        if ("open" === this.conn.readyState) {
-            console.debug("forcing transport close")
-            this.conn.close()
-            this.onclose("forced server close")
-        }
-    }
+  /**
+   * Connects a client to a namespace.
+   *
+   * @param name - the namespace
+   * @param {Object} auth - the auth parameters
+   *
+   * @private
+   */
+  private doConnect(name: string, auth: Record<string, unknown>): void {
+    const nsp = this.server.of(name);
 
-    /**
+    // @java-patch multi thread need direct callback socket
+    const socket = nsp._add(this, auth, (socket) => {
+      this.sockets.set(socket.id, socket);
+      this.nsps.set(nsp.name, socket);
+
+      if (this.connectTimeout) {
+        clearTimeout(this.connectTimeout);
+        this.connectTimeout = undefined;
+      }
+    });
+  }
+
+  /**
+   * Disconnects from all namespaces and closes transport.
+   *
+   * @private
+   */
+  _disconnect(): void {
+    for (const socket of this.sockets.values()) {
+      socket.disconnect();
+    }
+    this.sockets.clear();
+    this.close();
+  }
+
+  /**
+   * Removes a socket. Called by each `Socket`.
+   *
+   * @private
+   */
+  _remove(
+    socket: Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>
+  ): void {
+    if (this.sockets.has(socket.id)) {
+      const nsp = this.sockets.get(socket.id)!.nsp.name;
+      this.sockets.delete(socket.id);
+      this.nsps.delete(nsp);
+    } else {
+      debug("ignoring remove for %s", socket.id);
+    }
+  }
+
+  /**
+   * Closes the underlying connection.
+   *
+   * @private
+   */
+  private close(): void {
+    if ("open" === this.conn.readyState) {
+      debug("forcing transport close");
+      this.conn.close();
+      this.onclose("forced server close");
+    }
+  }
+
+  /**
    * Writes a packet to the transport.
    *
    * @param {Object} packet object
    * @param {Object} opts
    * @private
    */
-    _packet(packet: Packet | any[], opts: WriteOptions = {}): void {
-        if (this.conn.readyState !== "open") {
-            console.debug(`client ${this.id} ignoring packet write ${JSON.stringify(packet)}`)
-            return
-        }
-        const encodedPackets = opts.preEncoded
-            ? (packet as any[]) // previous versions of the adapter incorrectly used socket.packet() instead of writeToEngine()
-            : this.encoder.encode(packet as Packet)
-        for (const encodedPacket of encodedPackets) {
-            this.writeToEngine(encodedPacket, opts)
-        }
+  _packet(packet: Packet | any[], opts: WriteOptions = {}): void {
+    if (this.conn.readyState !== "open") {
+      debug("ignoring packet write %j", packet);
+      return;
     }
+    const encodedPackets = opts.preEncoded
+      ? (packet as any[]) // previous versions of the adapter incorrectly used socket.packet() instead of writeToEngine()
+      : this.encoder.encode(packet as Packet);
+    this.writeToEngine(encodedPackets, opts);
+  }
 
-    private writeToEngine(
-        encodedPacket: String | Buffer,
-        opts: WriteOptions
-    ): void {
-        if (opts.volatile && !this.conn.transport.writable) {
-            console.debug(`client ${this.id} volatile packet is discarded since the transport is not currently writable`)
-            return
-        }
-        this.conn.write(encodedPacket, opts)
+  private writeToEngine(
+    encodedPackets: Array<string | Buffer>,
+    opts: WriteOptions
+  ): void {
+    if (opts.volatile && !this.conn.transport.writable) {
+      debug(
+        "volatile packet is discarded since the transport is not currently writable"
+      );
+      return;
     }
-
-    /**
-     * Called with incoming transport data.
-     *
-     * @private
-     */
-    private ondata(data): void {
-        // try/catch is needed for protocol violations (GH-1880)
-        try {
-            this.decoder.add(data)
-        } catch (error: any) {
-            this.onerror(error)
-        }
+    const packets = Array.isArray(encodedPackets)
+      ? encodedPackets
+      : [encodedPackets];
+    for (const encodedPacket of packets) {
+      this.conn.write(encodedPacket, opts);
     }
+  }
 
-    /**
-     * Called when parser fully decodes a packet.
-     *
-     * @private
-     */
-    private ondecoded(packet: Packet): void {
-        if (PacketType.CONNECT === packet.type) {
-            if (this.conn.protocol === 3) {
-                const parsed = url.parse(packet.nsp, true)
-                this.connect(parsed.pathname!, parsed.query)
-            } else {
-                this.connect(packet.nsp, packet.data)
-            }
-        } else {
-            const socket = this.nsps.get(packet.nsp)
-            if (socket) {
-                process.nextTick(function () {
-                    socket._onpacket(packet)
-                })
-            } else {
-                console.debug(`client ${this.id} no socket for namespace ${packet.nsp}.`)
-            }
-        }
+  /**
+   * Called with incoming transport data.
+   *
+   * @private
+   */
+  private ondata(data): void {
+    // try/catch is needed for protocol violations (GH-1880)
+    try {
+      this.decoder.add(data);
+    } catch (e) {
+      debug("invalid packet format");
+      this.onerror(e);
     }
+  }
 
-    /**
-     * Handles an error.
-     *
-     * @param {Object} err object
-     * @private
-     */
-    private onerror(err): void {
-        for (const socket of this.sockets.values()) {
-            socket._onerror(err)
-        }
-        this.conn.close()
+  /**
+   * Called when parser fully decodes a packet.
+   *
+   * @private
+   */
+  private ondecoded(packet: Packet): void {
+    let namespace: string;
+    let authPayload: Record<string, unknown>;
+    if (this.conn.protocol === 3) {
+      const parsed = url.parse(packet.nsp, true);
+      namespace = parsed.pathname!;
+      authPayload = parsed.query;
+    } else {
+      namespace = packet.nsp;
+      authPayload = packet.data;
     }
+    const socket = this.nsps.get(namespace);
 
-    /**
-     * Called upon transport close.
-     *
-     * @param reason
-     * @private
-     */
-    private onclose(reason: string): void {
-        console.debug(`client ${this.id} close with reason ${reason}`)
-
-        // ignore a potential subsequent `close` event
-        this.destroy()
-
-        // `nsps` and `sockets` are cleaned up seamlessly
-        for (const socket of this.sockets.values()) {
-            socket._onclose(reason)
-        }
-        this.sockets.clear()
-
-        this.decoder.destroy() // clean up decoder
+    if (!socket && packet.type === PacketType.CONNECT) {
+      this.connect(namespace, authPayload);
+    } else if (
+      socket &&
+      packet.type !== PacketType.CONNECT &&
+      packet.type !== PacketType.CONNECT_ERROR
+    ) {
+      process.nextTick(function () {
+        socket._onpacket(packet);
+      });
+    } else {
+      debug("invalid state (packet type: %s)", packet.type);
+      this.close();
     }
+  }
 
-    /**
-     * Cleans up event listeners.
-     * @private
-     */
-    private destroy(): void {
-        this.conn.removeListener("data", this.ondata)
-        this.conn.removeListener("error", this.onerror)
-        this.conn.removeListener("close", this.onclose)
-        // @ts-ignore
-        this.decoder.removeListener("decoded", this.ondecoded)
-
-        if (this.connectTimeout) {
-            clearTimeout(this.connectTimeout)
-            this.connectTimeout = undefined
-        }
+  /**
+   * Handles an error.
+   *
+   * @param {Object} err object
+   * @private
+   */
+  private onerror(err): void {
+    for (const socket of this.sockets.values()) {
+      socket._onerror(err);
     }
+    this.conn.close();
+  }
+
+  /**
+   * Called upon transport close.
+   *
+   * @param reason
+   * @param description
+   * @private
+   */
+  private onclose(
+    reason: CloseReason | "forced server close",
+    description?: any
+  ): void {
+    debug("client close with reason %s", reason);
+
+    // ignore a potential subsequent `close` event
+    this.destroy();
+
+    // `nsps` and `sockets` are cleaned up seamlessly
+    for (const socket of this.sockets.values()) {
+      socket._onclose(reason, description);
+    }
+    this.sockets.clear();
+
+    this.decoder.destroy(); // clean up decoder
+  }
+
+  /**
+   * Cleans up event listeners.
+   * @private
+   */
+  private destroy(): void {
+    this.conn.removeListener("data", this.ondata);
+    this.conn.removeListener("error", this.onerror);
+    this.conn.removeListener("close", this.onclose);
+    // @ts-ignore
+    this.decoder.removeListener("decoded", this.ondecoded);
+
+    if (this.connectTimeout) {
+      clearTimeout(this.connectTimeout);
+      this.connectTimeout = undefined;
+    }
+  }
 }