feat: upgrade socket.io to v4

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

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

@@ -1,10 +1,45 @@
+// import { createServer } from "http"
+import { Server, AttachOptions, ServerOptions } from "./server"
+import transports from "./transports/index"
+import * as parser from "../engine.io-parser"
+
+// 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
+
 /**
- * Module dependencies.
+ * 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
  */
 
-// const http = require("http")
-// const Server = require("./server")
-import { Server } from './server'
+// 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) {
+function attach(server, options: AttachOptions & ServerOptions) {
     const engine = new Server(options)
-    engine.attach(srv, options)
+    engine.attach(server, options)
     return engine
 }
-
-export = {
-    attach
-}