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POIIS 7 returning an old version of a constantly changing file
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copied!<p>I'm trying to use IIS7 to host a <a href="http://developer.apple.com/iphone/library/documentation/NetworkingInternet/Conceptual/StreamingMediaGuide/Introduction/Introduction.html" rel="nofollow noreferrer">HTTP Live Streaming</a> server. </p> <p>For those not familiar with HTTPLS: an audio or video stream is broken into small segments and made available on a web server. Along with the segments an index.m3u8 file is created which is a flat text file that lists segments currently available for download in the order in which they should be played. Typically, a new segment is created every 5 or 10 seconds and the index.m3u8 is overwritten at that time.</p> <p>So I have a service running in Windows Server 2008 that is writing its segments and index.m3u8 files into a directory hosted by IIS. My client software connects and has no problem playing audio most of the time.</p> <p><strong>The problem:</strong> The client will sometimes receive an old index file over and over for hours on end despite the fact that new audio segments are being created.</p> <p>I have two possible explanations:</p> <ol> <li>The service creating the segments is not succeeding in overwriting the index.m3u8 for prolonged periods of time.</li> <li>IIS7 has an internal file system cache that it reading from to fulfill the web requests.</li> </ol> <p><strong>So my question:</strong> does IIS have such a cache and if so what settings do I make to disable it?</p> <p>Edit: I forgot to mention the IIS logs for these requests show http code <strong>200</strong> request OK.</p>

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