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POWCF Tracing. How I can get the exact reason for closing connection?
 

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  1. POWCF Tracing. How I can get the exact reason for closing connection?
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    <p>In my WCF service, when trying transfer large data I constantly get an error: <strong><em>The underlying connection was closed: The connection was closed unexpectedly</em></strong></p> <p>I want to know what particular reason invokes this error, so I set up <strong>WCF Tracing</strong> and can read <em>traces.svclog</em> file.</p> <p>The problem is, that I can see in this file a lot of information about flow of processes, I can see exact time when exception is appeared, but I can't see the exact reason for that. Is it due to <strong><em>MaxReceivedMessageSize</em></strong> or something like that. </p> <p>Is it so that <em>traces.svclog</em> can not contain such information or am I doing something wrong? </p> <p>How such information could be obtained?</p> <p><strong>Edited (added):</strong></p> <p>From my server-side app.config:</p> <pre><code> &lt;system.serviceModel&gt; &lt;bindings&gt; &lt;basicHttpBinding&gt; &lt;binding name="NAVBinding_ICustomer_Service" closeTimeout="01:50:00" openTimeout="01:50:00" receiveTimeout="01:50:00" sendTimeout="01:50:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true"&gt; &lt;readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" /&gt; &lt;security mode="None"&gt; &lt;transport clientCredentialType="None" proxyCredentialType="None" realm="" /&gt; &lt;message clientCredentialType="UserName" algorithmSuite="Default" /&gt; &lt;/security&gt; &lt;/binding&gt; &lt;/basicHttpBinding&gt; &lt;/bindings&gt; &lt;services&gt; &lt;service name = "Customer_Service" behaviorConfiguration="returnFaults"&gt; &lt;endpoint name="NAVBinding_ICustomer_Service" address = "http://localhost:8000/nav/customer" binding = "basicHttpBinding" bindingConfiguration= "NAVBinding_ICustomer_Service" contract = "NAVServiceReference.ICustomer_Service"/&gt; &lt;/service&gt; &lt;/services&gt; &lt;behaviors&gt; &lt;serviceBehaviors&gt; &lt;behavior name="returnFaults" &gt; &lt;serviceDebug includeExceptionDetailInFaults="true" /&gt; &lt;serviceMetadata httpGetEnabled="true" /&gt; &lt;/behavior&gt; &lt;/serviceBehaviors&gt; &lt;/behaviors&gt; &lt;/system.serviceModel&gt; </code></pre> <p><strong>Edited (added):</strong></p> <p>What is the right and best way to turn WCF service from a "black box" to an easily troubleshooted service, which tells the reason why something goes not the expected way? What tools, techniques you use to troubleshoot WCF service?</p>
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    1. COit should be in your trace log, what size file are you trying to send?
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    2. COSize of the file is about 8 MB. It is, in fact, the size of the database table data which is transferred through XML stream, so I don't know final exact size of datastream, including maybe XML tags info. But it is for sure bigger than default 65536 of MaxReceivedMessageSize parameter.
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    3. COcan you show us the server app.config (the <system.serviceModel> section) ? Do you use WCF streaming (e.g. a method with a return type of `Stream`), or buffered transfer (the default) ??
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