go-socket.io [BUG] OnEvent error:websocket: write closed

Describe the bug server.OnEvent("signaling", "Register”, func(so socketio.Conn, msg interface{}) I use the method of OnEvent like above,.but it always happen this: meet error:websocket: write closed

I try to add heart beat each 1 second,It doesn't work.

Jul 26 '19 12:07 zhouruisong

@zhouruisong Hi It is difficult understand your issue. Please share some example code about your problem.

Oct 02 '19 10:10 sshaplygin

It is work. Interface between client and server in Go-socket.io work as origin socket.io protocol.

Correct code:

server.OnEvent("/signaling", "Register", func(s socketio.Conn, msg interface{})

Full text code:

Client code:

<!doctype html>
<html>
  <head>
    <title>Socket.IO chat</title>
    <style>
      * { margin: 0; padding: 0; box-sizing: border-box; }
      body { font: 13px Helvetica, Arial; }
      form { background: #000; padding: 3px; position: fixed; bottom: 0; width: 100%; }
      form input { border: 0; padding: 10px; width: 90%; margin-right: .5%; }
      form button { width: 9%; background: rgb(130, 224, 255); border: none; padding: 10px; }
      #messages { list-style-type: none; margin: 0; padding: 0; }
      #messages li { padding: 5px 10px; }
      #messages li:nth-child(odd) { background: #eee; }
    </style>
  </head>
  <body>
    <ul id="messages"></ul>
    <form action="">
      <input id="m" autocomplete="off" /><button>Send</button>
    </form>
    <script src="https://cdn.socket.io/socket.io-1.2.0.js"></script>
    <script src="https://code.jquery.com/jquery-1.11.1.js"></script>
    <script>
      var socket = io();
      var s2 = io("/signaling");
      socket.on('reply', function(msg){
        $('#messages').append($('<li>').text(msg));
      });
      $('form').submit(function(){
        s2.emit('Register', $('#m').val(), function(data){
          $('#messages').append($('<li>').text('ACK CALLBACK: ' + data));
        });
        socket.emit('notice', $('#m').val());
        $('#m').val('');
        return false;
      });
    </script>
  </body>
</html>

Server code:

package main

import (
	"fmt"
	"log"
	"net/http"

	socketio "github.com/googollee/go-socket.io"
)

func main() {
	server, err := socketio.NewServer(nil)
	if err != nil {
		log.Fatal(err)
	}
	server.OnConnect("/", func(s socketio.Conn) error {
		s.SetContext("")
		fmt.Println("connected:", s.ID())
		return nil
	})
	server.OnEvent("/", "notice", func(s socketio.Conn, msg string) {
		fmt.Println("notice:", msg)
		s.Emit("reply", "have "+msg)
	})

	server.OnEvent("/signaling", "Register", func(s socketio.Conn, msg string) string {
		s.SetContext(msg)
		return "recv " + msg
	})
	
	server.OnEvent("/", "bye", func(s socketio.Conn) string {
		last := s.Context().(string)
		s.Emit("bye", last)
		s.Close()
		return last
	})
	server.OnError("/", func(e error) {
		fmt.Println("meet error:", e)
	})
	server.OnDisconnect("/", func(s socketio.Conn, msg string) {
		fmt.Println("closed", msg)
	})
	go server.Serve()
	defer server.Close()

	http.Handle("/socket.io/", server)
	http.Handle("/", http.FileServer(http.Dir("../asset")))
	log.Println("Serving at localhost:8000...")
	log.Fatal(http.ListenAndServe(":8000", nil))
}

Oct 13 '19 17:10 sshaplygin

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[BUG] OnEvent error:websocket: write closed

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