Connecting to TCP Socket from browser using javascript

http://stackoverflow.com/questions/12407778/connecting-to-tcp-socket-from-browser-using-javascript

You can use HTML5 Web Sockets:

点击(此处)折叠或打开

1. var connection = new WebSocket('ws://IPAddress:Port');
   
2. connection.onopen = function () {
   
3.   connection.send('Ping'); // Send the message 'Ping' to the server
   
4. };

http://www.html5rocks.com/en/tutorials/websockets/basics/

Introducing WebSockets: Bringing Sockets to the Web

++++++++++++++++++++++++++++++++++

See jsocket. Haven't used it myself. Been more than 3 years since last update (as of 26/6/2014).

From the documentation:

点击(此处)折叠或打开

1. <script type='text/javascript'>
   
2.     // Host we are connecting to
   
3.     var host = 'localhost';
   
4.     // Port we are connecting on
   
5.     var port = 3000;
   
6. 
   
7.     var socket = new jSocket();
   
8. 
   
9.     // When the socket is added the to document
   
10.     socket.onReady = function(){
    
11.             socket.connect(host, port);
    
12.     }
    
13. 
    
14.     // Connection attempt finished
    
15.     socket.onConnect = function(success, msg){
    
16.             if(success){
    
17.                     // Send something to the socket
    
18.                     socket.write('Hello world');
    
19.             }else{
    
20.                     alert('Connection to the server could not be estabilished: ' + msg);
    
21.             }
    
22.     }
    
23.     socket.onData = function(data){
    
24.             alert('Received from socket: '+data);
    
25.     }
    
26. 
    
27.     // Setup our socket in the div with the id="socket"
    
28.     socket.setup('mySocket');
    
29. </script>

<script>window._bd_share_config={"common":{"bdSnsKey":{},"bdText":"","bdMini":"2","bdMiniList":false,"bdPic":"","bdStyle":"0","bdSize":"16"},"share":{}};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)];</script>

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