node.js - socket IO client do not receive anything -

i using socket io node manage chat application

i can connect socket , , when connect other other machine , client not recive .

in other machine , there no antivirus , firewall disabled . ( use google chrome , opera , windows 7 )

something interesting can connect socket mobile !

when machine connect system , can see debug in console

 info  - socket.io started    debug - served static content /socket.io.js    debug - served static content /socket.io.js    debug - client authorized    info  - handshake authorized gu63jd6tynpcf7jo72u0    debug - setting request /socket.io/1/websocket/gu63jd6tynpcf7jo72u0    debug - set heartbeat interval client gu63jd6tynpcf7jo72u0    debug - client authorized     debug - websocket writing 1::    **debug - websocket writing 5:::{"name":"ready","args":[{"msg":"hi"}]}**    debug - setting request /socket.io/1/xhr-polling/gu63jd6tynpcf7jo72u0?t=1374596975155    debug - setting poll timeout    debug - discarding transport    debug - cleared heartbeat interval client gu63jd6tynpcf7jo72u0    debug - setting request /socket.io/1/jsonp-polling/gu63jd6tynpcf7jo72u0?t=1374596985158&i=0    debug - setting poll timeout    debug - discarding transport    debug - clearing poll timeout 

i use connect site :

var socket = io.connect('192.168.1.101:900');

the machine not 404 not found , or error , methods did not fire...

as can see , client should receive ready , not , problem ?

the server source :

var express = require('/usr/local/lib/node_modules/express'),         app = express()         , http = require('http')         , server = http.createserver(app)         , io = require('/usr/local/lib/node_modules/socket.io').listen(server);  // listen new web clients: server.listen(900, function() {     //console.log(this); });   // routing app.get('/', function(req, res) {     res.end('it works'); });  io.sockets.on('connection', function(socket) {      socket.emit('ready', {msg: 'hi'}); } 

client

    var socket = io.connect('192.168.1.101:900');     console.log('connecting');      socket.on('error', function(data) {         console.log(data || 'error');     });      socket.on('connect_failed', function(data) {         console.log(data || 'connect_failed');     });      // on connection server, ask user's name anonymous callback     socket.on('connect', function() {          alert('work');     });      socket.on('ready', function() {          alert('work');     });