Possible bug in Subject Headers

Hi
Ranga, when you mean you want us to use the user list on java.net, are 
you referring to [email protected]?

I think I may have come across a possible bug when it comes to adding 
subject headers. Can the subject header change midway through a session?

I have a session established with a subject header.
I add SubjectHeaders using

request.addHeader(subjectHeader).

However when I come to create another request (using the same session), 
and I again add a subject header with a different subject:

request.addHeader(subjectHeader)

the subject header added is the previous one, not the newly created one! 
At the moment I am getting around this by using
request.addHeader(subjectHeader); //this adds the previously used 
subject header, even though a new one was created!
request.removeHeader(SubjectHeader.NAME); //to remove the subject header 
just added
request.addHeader(subjectHeader); //adding the new one a second time 
adds it correctly.

The RFC does not state that Subject headers cannot change during a 
session/call (section 20.36 of RFC 3261), however it may allude to it 
"...The Subject header field provides a summary or indicates the nature 
of the call ..."

Jeroem, your suggestion of removing the via header works! thanks a lot!