Patrick\’s Bytes

2, July 2008

Passing large files over WCF channel

Filed under: WCF — patrickyong @ 10:32 am

If you want to pass large binary files via a WCF channel, you need to increase the maxStringContentLength on your WCF host app.config/web.config file. From my sample on my IssueTracker project, I added a new bindings element to the system.serviceModel section as below:
                <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”
                    <readerQuotas maxDepth=”2147483647″ maxStringContentLength=”2147483647″ maxArrayLength=”2147483647″
                        maxBytesPerRead=”2147483647″ maxNameTableCharCount=”2147483647″ />
                    <reliableSession ordered=”true” inactivityTimeout=”00:10:00″
                        enabled=”false” />
                    <security mode=”Message”>
                        <transport clientCredentialType=”Windows” proxyCredentialType=”None”
                            realm=”” />
                        <message clientCredentialType=”Windows” negotiateServiceCredential=”true”
                            algorithmSuite=”Default” establishSecurityContext=”true” />

        Having done that, your service will still not using this binding configuration, you need to add the binding name to the bindingConfiguration attribute inside your service element.

      <service behaviorConfiguration=”DataServiceBehavior” name=”Zuko.Service.DataService”>
        <endpoint address=”” binding=”wsHttpBinding” contract=”Zuko.Service.IDataService” bindingConfiguration=”WSHttpBinding_IDataService”>
            <dns value=”localhost” />
        <endpoint address=”mex” binding=”mexHttpBinding” contract=”IMetadataExchange” />


  1. bindingConfiguration=”WSHttpBinding_IDataService”
    i made this change in service app.config but my service is not runnind

    Comment by haritha — 10, December 2008 @ 4:48 pm | Reply

  2. can any one help me
    when i am trying to send large amount of data into database i am getting exception that “The remote server returned an unexpected response: (400) Bad Request.” I am using WCF

    Comment by haritha — 10, December 2008 @ 4:54 pm | Reply

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