refactor(websocket): upgrade socket.io

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

packages/websocket/src/socket-io/parent-namespace.ts

@@ -0,0 +1,40 @@
+import { Namespace } from "./namespace"
+
+export class ParentNamespace extends Namespace {
+    private static count: number = 0;
+    private children: Set<Namespace> = new Set();
+
+    constructor(server) {
+        super(server, "/_" + ParentNamespace.count++)
+    }
+
+    _initAdapter() { }
+
+    public emit(...args: any[]): boolean {
+        this.children.forEach(nsp => {
+            nsp._rooms = this._rooms
+            nsp._flags = this._flags
+            nsp.emit.apply(nsp, args as any)
+        })
+        this._rooms.clear()
+        this._flags = {}
+
+        return true
+    }
+
+    createChild(name) {
+        const namespace = new Namespace(this.server, name)
+        namespace._fns = this._fns.slice(0)
+        this.listeners("connect").forEach(listener =>
+            // @ts-ignore
+            namespace.on("connect", listener)
+        )
+        this.listeners("connection").forEach(listener =>
+            // @ts-ignore
+            namespace.on("connection", listener)
+        )
+        this.children.add(namespace)
+        this.server._nsps.set(name, namespace)
+        return namespace
+    }
+}