Databases
StackOverflow2013
Postsdbo
POIntermitent WCF service timeout exception
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POIntermitent WCF service timeout exception
    text
    copied!<p>We have a WCF service hosted in Windows service and a single non-threaded client accessing the service. The service is performing data access to a SQL Server 2008 database. Intermitently the following exception occurs on the client side:</p> <pre><code>System.TimeoutException: The request channel timed out while waiting for a reply after 00:01:00. Increase the timeout value passed to the call to Request or increase the SendTimeout value on the Binding. The time allotted to this operation may have been a portion of a longer timeout. </code></pre> <p>I am aware that this error can be a bit of a catch all for WCF problems but I am certain that the error is not occuring because the operation takes over a minute (I have trippled the timeout and it still occurs).</p> <p>The problem has occurred on multiple endpoints and occurs on the call to the client proxy. I logged to a text file the various points the service reaches when the crash occurs and see that the return statement from the service is reached.</p> <p>The client and service have been in use in some form for over two years and this problem appears to have occurred only recently and without any obivious changes in areas significant to the service (although both of these statements are danagerous to rely on when debugging a problem).</p> <p>Any advice, thoughts or suggestions to investigate would be appreciated.</p> <p>Here is the service binding:</p> <pre><code>&lt;binding name="WSHttpBinding_IDataService" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false"&gt; &lt;readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" /&gt; &lt;reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false" /&gt; &lt;security mode="Message"&gt; &lt;transport clientCredentialType="Windows" proxyCredentialType="None" realm="" /&gt; &lt;message clientCredentialType="Windows" negotiateServiceCredential="true" algorithmSuite="Default" establishSecurityContext="true" /&gt; &lt;/security&gt; &lt;/binding&gt; </code></pre> <p>and here is the client binding:</p> <pre><code>&lt;binding name="WSHttpBinding_IAssessmentDataAccessContract" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false"&gt; &lt;readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384"/&gt; &lt;reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false"/&gt; &lt;security mode="Message"&gt; &lt;transport clientCredentialType="Windows" proxyCredentialType="None" realm=""&gt; &lt;extendedProtectionPolicy policyEnforcement="Never"/&gt; &lt;/transport&gt; &lt;message clientCredentialType="Windows" negotiateServiceCredential="true" algorithmSuite="Default" establishSecurityContext="true"/&gt; &lt;/security&gt; &lt;/binding&gt; </code></pre>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload