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POnode.js socket.io simple chat
 

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  1. POnode.js socket.io simple chat
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    <p>I'm starting playing with node.js and as everybody, I want do a chat.</p> <p>My idea is run node.js with socket.io in the port 9090, for example, and my client html in the port 8080. My html client will be served independent.</p> <p>My server:</p> <pre><code>var sys = require('sys'); var express = require('express'); var io = require('socket.io'); var app = express.createServer(); app.listen(8080); var socket = io.listen(app); socket.on('connection', function (client) { client.on('message', function (msg) { socket.broadcast(msg); }); client.on('disconnect', function () { }); }); </code></pre> <p>My client:</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"&gt;&lt;/script&gt; &lt;script src="http://cdn.socket.io/stable/socket.io.js"&gt;&lt;/script&gt; &lt;script&gt; $(document).ready(function () { var socket = new io.Socket("localhost", {port: 8080}); socket.on('connect', function () { socket.send('A client connected.'); }); socket.on('message', function (message) { $('div#messages').append($('&lt;p&gt;'), message); }); socket.on('disconnect', function () { console.log('disconnected'); }); socket.connect(); $('input').keydown(function (event) { if(event.keyCode === 13) { socket.send($('input').val()); $('input').val(''); } }); }); &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;input type="text" style="width: 300px;" /&gt; &lt;div id="messages" style="border:solid 1px #000;"&gt;&amp;nbsp;&lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>I'm running in ubuntu 11.04 with node.js v0.4.10.</p> <p>The server works fine, but the client can't do connection, in the console.log on google Chrome I received this message: XMLHttpRequest cannot load <a href="http://localhost:8080/socket.io/xhr-polling//1311465961485" rel="noreferrer">http://localhost:8080/socket.io/xhr-polling//1311465961485</a>. Origin <a href="http://localhost" rel="noreferrer">http://localhost</a> is not allowed by Access-Control-Allow-Origin.</p> <p>The server.js is in a folder in /var/www/cliente/chat/public.</p> <p>What's the problem?</p>
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