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PO"Specified network name is no longer available" in Httplistener
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  1. PO"Specified network name is no longer available" in Httplistener
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    copied!<p>I have built a simple web service that simply uses HttpListener to receive and send requests. Occasionally, the service fails with "Specified network name is no longer available". It appears to be thrown when I write to the output buffer of the HttpListenerResponse.</p> <p>Here is the error:</p> <blockquote> <p>ListenerCallback() Error: The specified network name is no longer available at System.Net.HttpResponseStream.Write(Byte[] buffer, Int32 offset, Int32 size)</p> </blockquote> <p>and here is the guilty portion of the code. responseString is the data being sent back to the client:</p> <pre><code> buffer = System.Text.Encoding.UTF8.GetBytes(responseString); response.ContentLength64 = buffer.Length; output = response.OutputStream; output.Write(buffer, 0, buffer.Length); </code></pre> <p>It doesn't seem to always be a huge buffer, two examples are 3,816 bytes and, 142,619 bytes, these errors were thrown about 30 seconds apart. I would not think that my single client application would be overloading HTTPlistener; the client does occasionally sent/receive data in bursts, with several exchanges happening one after another.</p> <p>Mostly Google searches shows that this is a common IT problem where, when there are network problems, this error is shown -- most of the help is directed toward sysadmins diagnosing a problem with an app moreso than developers tracking down a bug. My app has been tested on different machines, networks, etc. and I don't think it's simply a network configuration problem.</p> <p>What may be the cause of this problem?</p>
 

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