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POStreaming data with Node.js
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  1. POStreaming data with Node.js
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    copied!<p>I want to know if it is possible to stream data from the server to the client with Node.js. I want to post a single AJAX request to Node.js, then leave the connection open and continuously stream data to the client. The client will receive this stream and update the page continuously.</p> <h2>Update:</h2> <p>As an update to <a href="https://stackoverflow.com/questions/2558606/stream-data-with-node-js/2563459#2563459">this answer</a> - I cannot get this to work. The <code>response.write</code> is not sent before you call <code>close</code>. I have set up an example program that I use to achieve this:</p> <p>Node.js:</p> <pre><code>var sys = require('sys'), http = require('http'); http.createServer(function (req, res) { res.writeHead(200, {'Content-Type': 'text/html'}); var currentTime = new Date(); setInterval(function(){ res.write( currentTime.getHours() + ':' + currentTime.getMinutes() + ':' + currentTime.getSeconds() ); },1000); }).listen(8000); </code></pre> <p>HTML: </p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;title&gt;Testnode&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;!-- This fields needs to be updated --&gt; Server time: &lt;span id="time"&gt;&amp;nbsp;&lt;/span&gt; &lt;!-- import jQuery from google --&gt; &lt;script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"&gt;&lt;/script&gt; &lt;!-- import jQuery --&gt; &lt;script type="text/javascript"&gt; $(document).ready(function(){ // I call here node.localhost nginx ports this to port 8000 $('#time').load('http://node.localhost'); }); &lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Using this method I don't get anything back until I call <code>close()</code>. Is this possible or should I go with a long poll approach instead where I call the load function again as one comes in?</p>
 

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