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POConsiderations for ASP.NET application with long running synchronous requests
 

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    <p>Under windows server 2008 64bit, IIS 7.0 and .NET 4.0 if an ASP.NET application (using ASP.NET thread pool, synchronous request processing) is long running (> 30 minutes). Web application has no page and main purpose is reading huge files ( > 1 GB) in chunks (~5 MB) and transfer them to the clients. Code:</p> <pre><code>while (reading) { Response.OutputStream.Write(buffer, 0, buffer.Length); Response.Flush(); } </code></pre> <p>Single producer - single consumer pattern implemented so for each request there are two threads. I don't use task library here but please let me know if it has advantage over traditional thread creation in this scenario. HTTP Handler (.ashx) is used instead of a (.aspx) page. Under stress test CPU utilization is not a problem but with a single worker process, after 210 concurrent clients, new connections encounter time-out. This is solved by web gardening since I don't use session state. I'm not sure if there's any big issue I've missed but please let me know what other considerations should be taken in your opinion ?</p> <p><em>for example maybe IIS closes long running TCP connections due to a "connection timeout" since normal ASP.NET pages are processed in less than 5 minutes, so I should increase the value.</em></p> <p>I appreciate your Ideas.</p>
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    1. COI asked a question: http://stackoverflow.com/questions/4007863/how-to-create-threads-in-asp-net-pages-from-clr-thread-pool-instead-of-asp-net-pool but still unanswered.
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    2. COUnfortunately stackoverflow doesn't allow to set a bounty on a question from first day. You see here after some edit here are some answers with no relation to edit. Any new answer has a more chance for acception.
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