WCF to receive large strings, get exception - wcf

Question

I went through all the posts about this, nothing helped, so I posted this because I'm pulling my hair out.
I have a WCF web-service that has a method that receives a string, a long string. It works with a string of 2,390,158 characters (tried it) but won't work with a string of about 5,440,519 characters. (I'm using VS 2010)
I have this error:
System.ServiceModel.CommunicationException: An error occurred while receiving the HTTP response http:// localhost : 58014/ WSWebService.asmx. The reason may be that the connection endpoint service does not use the HTTP protocol. This may also be due to a HTTP request context has been ignored by the server (possibly due to the discontinuation of service).
I put all parameters I could at int.MaxValue (2,147,483,647) but it still won't work. Any help/suggestion is gladly appreciated.
I removed the "timeout" parts but it makes no difference :
closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
Here's the binding in my app.config:
<bindings>
<basicHttpBinding>
<binding name="WSWebServiceSoap" maxReceivedMessageSize="20971520"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
useDefaultWebProxy="true">
<readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647"
maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
<security mode="None">
<transport clientCredentialType="None" proxyCredentialType="None" realm="" />
<message clientCredentialType="UserName" algorithmSuite="Default" />
</security>
</binding>
</basicHttpBinding>
</bindings>
My config server side is :
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="WSWebServiceSoap" maxReceivedMessageSize="20971520"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
maxBufferSize="20971520" maxBufferPoolSize="20971520"
useDefaultWebProxy="true">
<readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647"
maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
<security mode="None">
<transport clientCredentialType="None" proxyCredentialType="None"
realm="" />
<message clientCredentialType="UserName" algorithmSuite="Default" />
</security>
</binding>
</basicHttpBinding>
</bindings>
</system.serviceModel>
So yes, same configuration. Am I missing something?

Answer 1

Service was ASMX based, redone it pure WCF and now it works.