Hi all,
I develop a Windows Forms client application to comunicate with 3rd party
server application via the SOAP messages over HTTP. I must incorporate
SoapExtension because the SOAP messages must be zipped. I use SharpZipLib to
the compression.

I use SoapClient and SoapService like is described in
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wse/html/17123a
8b-fd0e-4369-a5b6-7324d62ac48e.asp.
Compression is provided by the SOAP extensions based on
http://primates.ximian.com/~lluis/blog/pivot/entry.php?id=13. SOAP messaging
works correctly as well as compression, but I don't know how I "compel" these
two functions to work together. If I use SoapClient (on the client side) the
soap extension is not invoked. If I create proxy object of SOAP service and
call the method directly, soap extension is invoked and message is compressed
but I receive error: "The data at the root level is invalid. Line 1, position
1.". I think that this error is occured because of missing HTTP headers
Accept-Encoding and Content-Encoding setted to "gzip". So my questions are:

1. How can I hook soap extensions to windows forms applicationwithout using
proxy object of SOAP service?
2. How can I set HTTP headers in SoapClient/SoapService/SoapEnvelope objects?
3. How can I obtain result (SoapEnvelope type) from proxy object? The SOAP
method returns null on the proxy object. What are parameters of this method?
Methods accepts XmlElement[] variable...

Thank you for your help.