TCP support

I notice that in your documentation you say that “As the core engine is actually protocol agnostic, it is perfectly possible to implement support for other protocols”

Has this been accomplished for TCP and if so, is there any documentation that would point a newbie like myself in the right direction?

I need a load testing tool which I can use to send requests via TCP; the first packet (to login) needs to contain a hex-encoded binary header as well as the XML payload.

Also need this

looks like here is an extension