Not working OnEvent Method

[51pwn]

client

<script src="https://cdn.socket.io/socket.io-1.2.0.js"></script>

signaling_socket = io({query: {room:ROOM_ID, userId:szUserId}, withCredentials: true,transports:aT1});
signaling_socket.on('connect', function () {
		join_chat_channel(ROOM_ID, {userId:szUserId});// is ok run
	});
function join_chat_channel(channel, userdata) {
		signaling_socket.emit('join', { "channel": channel, "userdata": userdata });// run is ok in client
	}

server

server.OnConnect(x1, fnConn(x1))
// not work on join
server.OnEvent(x1, "join", join)

I think it may be necessary to bind events to conn

server.OnConnect(x1, func(conn socketio.Conn) error{

conn.OnEvent(x1, "join", join)

return nil

})