If you're interested in the underlying transfered bits of WCF messages or if you want to build a custom WCF client based on raw network programming interfaces, here are some useful resource about WCF message framing:


#[MC-NMF]: .NET Message Framing Protocol Specification
http://msdn.microsoft.com/en-us/library/cc219293(PROT.10).aspx

#Message Framing
http://blogs.msdn.com/drnick/archive/2009/02/06/message-framing-part-7.aspx