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String too long for WCF

I am trying to send a long WCF string about 64k characters long. When I post a long string, I get an HTTP 400 error. But when I post a shorter string, everything works fine. Here is the WCF frontend and app.config that I am using.

My post contract:

[MessageContract]
public class MessageClass
{
    [MessageHeader(MustUnderstand = true)]
    public string id;

    [MessageBodyMember(Order=1)]
    public string realMessage;   // Long string
}

I tried to change my app.config settings by raising the values:

<bindings>
  <basicHttpBinding>
    <binding
      name="ws"
      transferMode="Streamed"
      messageEncoding="Mtom"
      maxReceivedMessageSize="10067108864">
      <readerQuotas
        maxDepth="32"
        maxStringContentLength="2147483647"
        maxArrayLength="2147483647"
        maxBytesPerRead="4096"
        maxNameTableCharCount="16384" />
      <security mode="None">
        <transport clientCredentialType="None"/>
      </security>
    </binding>
  </basicHttpBinding>
</bindings>

Is there any other value I should change?

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2 answers


You also need to set "maxBufferSize" and "maxBufferPoolSize" in your binding:

<bindings>
  <basicHttpBinding>
    <binding
      name="ws"
      transferMode="Streamed"
      messageEncoding="Mtom"
      maxReceivedMessageSize="10067108864"
      maxBufferSize="500000" maxBufferPoolSize="500000">
      <readerQuotas
        maxDepth="32"
        maxStringContentLength="2147483647"
        maxArrayLength="2147483647"
        maxBytesPerRead="4096"
        maxNameTableCharCount="16384" />
      <security mode="None">
        <transport clientCredentialType="None"/>
      </security>
    </binding>
  </basicHttpBinding>
</bindings>


Same as standard WCF bindings, defaults to 64KB. However, since you are using "transferMode = Streamed", this should really not be a problem - there may be something going on there. How about increasing the parameter sendTimeout

? Perhaps your service is simply taking too long to respond.

Mark

+5


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See the maxReceivedMessageSize attribute of the basicHttpBinding @ http://msdn.microsoft.com/en-us/library/ms731361.aspx element . Coindicentally, default 65,536 KB.



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