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

You can use HTML5 Web Sockets:

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  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:


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  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.     var socket = new jSocket();

  7.     // When the socket is added the to document
  8.     socket.onReady = function(){
  9.             socket.connect(host, port);
  10.     }

  11.     // Connection attempt finished
  12.     socket.onConnect = function(success, msg){
  13.             if(success){
  14.                     // Send something to the socket
  15.                     socket.write('Hello world');
  16.             }else{
  17.                     alert('Connection to the server could not be estabilished: ' + msg);
  18.             }
  19.     }
  20.     socket.onData = function(data){
  21.             alert('Received from socket: '+data);
  22.     }

  23.     // Setup our socket in the div with the id="socket"
  24.     socket.setup('mySocket');
  25. </script>







10-20 17:47
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