Client Handler question: dynamic information per request

[Ryan Chambers]

I've implemented a custom client request handler. It adds some 
SOAPElement objects to the SOAPHeader. This is pretty easy to do when 
the stuff it adds is static for every request. But I need to make some 
changes where the stuff that is added is different for every request. 
How do I do that? I figured I could set the properties somewhere using 
the MessageContext class. But I can't figure out how to get access to 
that outside of the BasicHandler and its inheritors.

Has anybody written a custom client handler where different data is used 
for every request?

Thanks in advance.

Ryan