node.js - JavaScript WebSocket connection readyState = 0. Connection to server can not be established -


i have code node.js have been running node.exe looks this:

// http://www.zhihua-lai.com/acm // 09-feb-2013  var sys = require('sys'); var net = require('net'); var sockets = [];  var svr = net.createserver(function(sock) {     sys.puts('connected: ' + sock.remoteaddress + ':' + sock.remoteport);      sock.write('hello ' + sock.remoteaddress + ':' + sock.remoteport + '\n');     sockets.push(sock);      sock.on('data', function(data) {  // client writes message         if (data == 'exit\n') {             sys.puts('exit command received: ' + sock.remoteaddress + ':' + sock.remoteport + '\n');             sock.destroy();             var idx = sockets.indexof(sock);             if (idx != -1) {                 delete sockets[idx];             }             return;         }         var len = sockets.length;         (var = 0; < len; ++) { // broad cast             if (sockets[i] != sock) {                 if (sockets[i]) {                     sockets[i].write(sock.remoteaddress + ':' + sock.remoteport + ':' + data);                 }             }         }     });      sock.on('end', function() { // client disconnects         sys.puts('disconnected: ' + data + data.remoteaddress + ':' + data.remoteport + '\n');         var idx = sockets.indexof(sock);         if (idx != -1) {             delete sockets[idx];         }     }); });  var svraddr = '127.0.0.1'; var svrport = 8080;  svr.listen(svrport, svraddr); sys.puts('server created @ ' + svraddr + ':' + svrport + '\n');

once have server running can open 2 more terminal clients , use netcat or telnet. when type information either of client windows information broadcast both netcat windows. trouble having when try create javascript connection server.

<!doctype html> <html> <head> <title>sample</title> <script type="text/javascript"> var connection = new websocket('ws://localhost:8080'); console.log(connection); // when connection open, send data server connection.onopen = function () {     connection.send("a"); // send message 'ping' server     console.log("send data..."); }; </script> <body> </body> </html>

what happens readystate of connection 0 indicating google chromes javascript not open connection server. have made sure windows firewall off avoid connection troubles , server working fine netcat. take nodejs further , javascript connect server i'm not sure yet how going happen or needs change code.

thanks in advance...

while websockets use tcp/ip, websocket server not standard tcp server.

rfc6455 defines websocket protocol clients , servers must use. open connection, see handshaking section. later send/receive messages see data framing section.

you'll need either implement own server implements protocol or find existing third party server can integrate. if want consider existing servers, ws looks promising.


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