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WCF ProtocolException: Invalid request 400 (related to the size of the http message)

I am trying to pass a base64 encoded string over WCF using WebHttpBinding.

I get a cryptic "Bad Request 400" error that the server is not responding to. I know this is due to the size of the string, because if I test a very short string (about 4 KB or so), it works, but nothing is even a little higher.

I read everywhere that this is due to maxReceivedMessageSize or another configuration in web.config for binding, but even after changing these numbers on the client server and I still get the error (in other words, I read alot of other messages about this exact problem, but they didn't seem to help?)

Ive confirmed that everything is working properly until the last line of the following code where the error occurs:

static IHttpDataPush push = new HttpDataPush();

var wcfClient = ChannelHelperExtensions.WebHttpChannel<IHttpDataRcv>("http://localhost:3941/HttpRcv");

        var args = wcfClient.OptionArgs();

        foreach (var v in args)
        {
            HttpTransactionDataArgs uid = push.Option(v.Entity, v.Option, v.Key);

            wcfClient.ResponseNotification(uid); <-- error thrown at this line

/ :

[ServiceContract]
public interface IHttpDataPush
{
    [OperationContract]
    HttpTransactionDataArgs DbRequest(HttpTransactionOptionArgs args);

    [OperationContract]
    [WebGet]
    HttpTransactionDataArgs DbOption(string entity, string option, string key);
}

[DataContract]
[KnownType(typeof(HttpTransactionDataArgs))]
public class HttpTransactionDataArgs
{
    [DataMember]
    public string EntityName { get; set; }

    [DataMember]
    public string Base64Schema { get; set; }

    [DataMember]
    public string Base64Data { get; set; }

    [DataMember]
    public bool TransactionSuccessful { get; set; }
}

:

[ServiceContract]
public interface IHttpDataRcv
{
    [OperationContract]
    HttpTransactionOptionArgs[] OptionArgs();

    [OperationContract]
    bool ResponseNotification(HttpTransactionDataArgs args);
}

[DataContract]
[KnownType(typeof(HttpTransactionOptionArgs))]
public class HttpTransactionOptionArgs
{
    [DataMember]
    public string Entity { get; set; }

    [DataMember]
    public string Option { get; set; }

    [DataMember]
    public string Key { get; set; }
}

web.config:

<bindings>
  <webHttpBinding>
    <binding name="webHttpConfig" closeTimeout="00:20:00" openTimeout="00:20:00"
        receiveTimeout="00:20:00" sendTimeout="00:20:00"
        maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" >
      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647"
          maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
    </binding>

<endpoint address="/HttpRcv" behaviorConfiguration="REST" bindingConfiguration="webHttpConfig" binding="webHttpBinding" contract="EmailContracts.IHttpDataRvc" />

- ( :)

<client>
  <endpoint address="http://localhost:3941/HttpRcv"
            binding="webHttpBinding"
            bindingConfiguration="webHttpConfig"
            contract="EmailContracts.IHttpDataRcv" />
</client>

    <bindings>
  <webHttpBinding>
    <binding name="webHttpConfig" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" maxBufferSize="2147483647">
      <readerQuotas maxStringContentLength="2147483647" maxArrayLength="2147483647" 
                    maxDepth="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
    </binding>      
  </webHttpBinding>
</bindings>
+3

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