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I'm primarily a BI Developer on the Microsoft stack. I do sometimes touch upon other Microsoft stacks ( web development, application development, and sql server development).

Friday, October 14, 2011

WCF & Silverlight max buffer size issue

Ran into these problems a few times with the WCF errors, in which the buffer size was the issue:
  • “The remote server returned an error: NotFound”
  • "Unable to read data from the transport connection: The connection was closed"
  • "The maximum message size quota for incoming messages (65536) has been exceeded. To increase the quota, use the MaxReceivedMessageSize property on the appropriate binding element."
This would be an easy solution if only dealing with the WCF. Since, we are using the WCF layer to pass data to/from the Silverlight layer the problem arises in two locations -- not one.

Over at Mehroz's Experiments (http://smehrozalam.wordpress.com/2009/01/29/retrieving-huge-amount-of-data-from-wcf-service-in-silverlight-application/) he goes into good detail on solving this problem.

So in the Silverlight's ServiceReferences.ClientConfig we increase the buffer size.

Code Snippet
 <binding name="BasicHttpBinding_IScientificDataService"   closeTimeout="00:01:00"openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" textEncoding="utf-8" transferMode="Buffered">
    <security mode="None"/>

In the WCF's Web.config, we needed to increase the maxBufferSize and maxReceivedMessageSize to a larger number

Code Snippet
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" aspNetCompatibilityEnabled="false" />

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