Setting Max Message and buffer size for WCF webhttp

Question

I currently have a WCF service with webHttp bindings, im attempting to increase the max size that can be inputted to the service by overriding the default settings in config

Answer 1

Setting Max Message and buffer size for WCF Rest services webhttpbinding

<bindings>
  <webHttpBinding>
    <binding maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647">
      <readerQuotas maxDepth="200" maxStringContentLength="83886089" maxArrayLength="163841" maxBytesPerRead="2147483647" maxNameTableCharCount="16384"/>
    </binding>
  </webHttpBinding>
</bindings>

Answer 2

There's a multitude of settings that might have an influence depending on your settings - try this:

<bindings>
  <webHttpBinding>
    <binding name="LargeWeb"
             maxBufferPoolSize="1500000"
             maxReceivedMessageSize="1500000"
             maxBufferSize="1500000">
      <readerQuotas 
            maxArrayLength="656000"
            maxBytesPerRead="656000"
            maxDepth="32"
            maxNameTableCharCount="656000"
            maxStringContentLength="656000"
            />
    </binding>
  </webHttpBinding>
</bindings>

By defining your "version" of the webHttpBinding and setting all those parameters to higher values, you should be able to get through any message size (almost).

Mind you: this does open up your system to the potential of being flooded with huge messages and thus be brought down to its knees (classic denial-of-service attacks) - that's the reason these limits are set fairly low - by design and on purpose.

You can change them to higher values - just be aware what you're doing and what the security risks are, if you do!

Marc

PS: In order to make use of these settings, you of course have to reference that binding configuration in your server and client side configs:

<client>
  <endpoint address="http://localhost"
            binding="webHttpBinding" bindingConfiguration="LargeWeb"
            contract="IMyService" />
</client>
<services>
  <service>
    <endpoint address="http://localhost"
              binding="webHttpBinding" bindingConfiguration="LargeWeb"
              contract="IMyService" />
  </service>
</services>

Answer 3

If you are using [DataContract] decorator in your model, you need to add yhe dataContractSerializer into your web.config

Example:

  <serviceBehaviors>
    <behavior name="ServiceBehavior">
      <serviceMetadata httpsGetEnabled="false"   httpGetEnabled="true"/>
      <serviceDebug includeExceptionDetailInFaults="true"/>
      <dataContractSerializer maxItemsInObjectGraph="2147483647" />
    </behavior>
  </serviceBehaviors>