如何使用网络套接字

Question

I'm trying to make use of Easy Websockets to come up with a chat application. http://easywebsocket.org/

Here's the code I have right now. As you can see, I'm trying to log the message on the console every time I click on the send button. It works when I open it up on 2 browsers. But it only works for less than 1 minute.

<input type="text" id="txt"/>
<input type="button" value="send" id="sends"/>
<div id="messages"></div>

<script src="jquery171.js"></script>
<script src="easywebsockets.js"></script>   
<script>
    var socket = new EasyWebSocket("ws://sample.com/resource");//I do not understand this part
    socket.onopen   = function(){
        socket.send("hello world.")
    }
    socket.onmessage= function(event){
        console.log(event.data)
    }

    $('#sends').click(function(){
        var txt = $('#txt').val()
        socket.send(txt)
    });
</script>

I got this error log from firebug:

I don't really understand what this all means. Is there something I need to setup in order to make this work?

Answer 1

It usually happens when the client doesn't use the same protocol version as the server. The server should specify what version it uses, socket.io by default goes with RFC6455 but it can be overridden to go with older hybi-0x.

So, check the following:

• client & server implemented protocol versions
• origin (eg localhost) is permitted by server
• firewalls, internet security suites, zonealarms, that kind of stuff