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POMaking moves w/ websockets and python / django ( / twisted? )
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copied!<p>The fun part of websockets is sending essentially unsolicited content from the server to the browser right?</p> <p>Well, I'm using django-websocket by Gregor Müllegger. It's a really wonderful early crack at making websockets work in Django.</p> <p>I have accomplished "hello world." The way this works is: when a request is a websocket, an object, websocket, is appended to the request object. Thus, I can, in the view interpreting the websocket, do something like:</p> <pre><code>request.websocket.send('We are the knights who say ni!') </code></pre> <p>That works fine. I get the message back in the browser like a charm.</p> <p>But what if I want to do that without issuing a request from the browser at all?</p> <p>OK, so first I save the websocket in the session dictionary:</p> <pre><code>request.session['websocket'] = request.websocket </code></pre> <p>Then, in a shell, I go and grab the session by session key. Sure enough, there's a websocket object in the session dictionary. Happy!</p> <p>However, when I try to do:</p> <pre><code>>>> session.get_decoded()['websocket'].send('With a herring!') </code></pre> <p>I get:</p> <pre><code>Traceback (most recent call last): File "<console>", line 1, in <module> error: [Errno 9] Bad file descriptor </code></pre> <p>Sad. :-(</p> <p>OK, so I don't know much of anything about sockets, but I know enough to sniff around in a debugger, and lo and behold, I see that the socket in my debugger (which is tied to the genuine websocket from the request) has fd=6, while the one that I grabbed from the session-saved websocket has fd=-1.</p> <p>Can a socket-oriented person help me sort this stuff out?</p>

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