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    <p>You might want to take a look at <a href="http://websocket.org/quantum.html" rel="nofollow noreferrer">websockets</a>, and especially at websocket.io, that allows you to fall <a href="https://stackoverflow.com/questions/3436555/html-5-websockets-will-replace-comet">back to comet</a> (comet isn't going to disappear anytime soon) when native websockets are not available, although as you are targeting the iphone (app?) you can choose whatever you want.</p> <p>One advantage of using websocket.io is that it includes fallback mechanisms in case a browser does not support websockets (with flash and/or longpolling)</p> <p>The current state of afairs in djangoland is, independently of the transport mechanism, that django and other mainly wsgi based frameworks aren't good at comet/websockets. That doesn't mean you can't integrate comet/websockets with django, but you normally place another piece of technology in between.</p> <p>A common implementation is to use something like redis+pubsub and a async server combination like node.js/socket.io or a python framework like twisted, orbited, cyclone, or evserver.</p> <p>Take a look at these questions that have to do with websockets and django: </p> <ul> <li><a href="https://stackoverflow.com/questions/7678402/django-gevent-socket-io-with-redis-pubsub-where-do-i-put-things">Django/gevent socket.IO with redis pubsub. Where do I put things?</a></li> <li><a href="https://stackoverflow.com/questions/4190186/can-i-use-socket-io-with-django">Can I use Socket.IO with Django?</a></li> <li><a href="https://stackoverflow.com/questions/4363899/making-moves-w-websockets-and-python-django-twisted/4369471#4369471">Making moves w/ websockets and python / django ( / twisted? )</a></li> <li><a href="https://stackoverflow.com/questions/4310706/django-comet-push-least-of-all-evils">Django / Comet (Push): Least of all evils?</a></li> </ul> <p>some iphone websockets questions I quickly looked up:</p> <ul> <li><a href="https://stackoverflow.com/questions/6535155/trying-to-connect-to-node-js-and-socket-io-0-7-2-from-iphone">trying to connect to node.js and socket.io 0.7.2 from iphone</a></li> <li><a href="https://stackoverflow.com/questions/4951461/iphone-objective-c-socket-communication-with-socket-io">iPhone Objective-C socket communication with Socket.IO</a></li> </ul> <p>some tutorials/projects that might help with the django side:</p> <ul> <li><a href="https://github.com/stephenmcd/django-socketio" rel="nofollow noreferrer">django-socketio</a> </li> <li><a href="http://codysoyland.com/2011/feb/6/evented-django-part-one-socketio-and-gevent/" rel="nofollow noreferrer">evented-django-part-one-socketio-and-gevent</a></li> <li><a href="http://sontek.net/pycon-sprints-part-1-the-realtime-web-with-gevent" rel="nofollow noreferrer">pycon-sprints-part-1-the-realtime-web-with-gevent</a> </li> <li><a href="http://socket.io/" rel="nofollow noreferrer">socket.io</a></li> </ul>
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    1. COas far as I know comet suppose to be a simpler option.
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    2. COnone of them are simple :) I've added an extra link.
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