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copied!<p>node.js is a non-blocking IO library capable of being used as a Web Server.</p> <p>Code Igniter is a PHP framework. </p> <p>Do you want to run a node.js Web Server beside your PHP Web Server and have them talk to each other? </p> <p>I'd recommend you do one or the other. Re write your entire website in <a href="http://expressjs.com/" rel="nofollow noreferrer">express</a> and <a href="http://nowjs.com/" rel="nofollow noreferrer">now</a>.</p> <p>If they must talk to each other you can easily open a TCP socket in node by using <code>net</code>.</p> <pre><code>var net = require('net'); var server = net.createServer(function (socket) { socket.write("Echo server\r\n"); socket.pipe(socket); }) server.listen(8124, "127.0.0.1"); </code></pre> <p>Then just use <a href="http://php.net/manual/en/function.fsockopen.php" rel="nofollow noreferrer"><code>fsockopen</code></a> in PHP to connect to node over a TCP socket.</p> <p><strong>Edit:</strong></p> <p>The live comments is completely independant of CI. You just need to have some socket.io javascript on you CI server pages. Your pages talk to node.js over a seperate socket and never touch the PHP back end. Your socket.io will push data to all your clients and the pages will render new messages with javascript.</p> <p>All codeigniter needs to do is insert </p> <pre><code><script src="url/socket-io.js" /> <script src="url/myChat.js" /> </code></pre> <p><strong>Further Edit:</strong></p> <p>So you need your user to log in over your websocket. I'm not sure how they log in now but sending the same username/password hash to node.js shouldn't be too hard. Get node.js to open a connection to your database where you store users. Then store which channels / threads / chat rooms / messages a particular user is "subscriped" to in a database.</p> <p>Then when node receives a message from a "channel" it just asks the database which users to push that message to, and then it pushes it.</p> <p>I answered a similar <a href="https://stackoverflow.com/questions/5621642/node-js-creating-persistent-private-chat-rooms/5623761#5623761">question</a> about writing a chat server using node and the video tutorial of <a href="http://nowjs.com" rel="nofollow noreferrer">now</a> has a good example. You should be able to turn "multiple rooms chatting" into "multiple thread commenting" pretty easily.</p> <p><strong>Further Further Edit</strong></p> <p>Don't post to the URL <code>comment/add/</code> when you click add. Don't use ajax. Instead use socket.io.</p> <p>So something like:</p> <pre><code>// on the client side $("#add").click(function() { socket.send("add" + user.toJSON()); }); socket.on("message", function(m) { if (/^new/.test(m)) { var post = m.substring(3); $("#comments").append($("<div></div>").text(post)); } }); // on the server side var socket = io.listen(server); socket.on('connection', function(client){ // new client is here! client.on('message', function(m){ if (/^add/.test(m)) { client.broadcast("new"+m.substring(3)); } }); }); </code></pre> <p>So simply the client sends a "add comment" message when you click add. The server listens for the add message and broadcasts the message to all <em>other</em> clients. These clients are already listening for the new message, and new appends a comment.</p>

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