getNewClientTransaction - Transaction already exists!

Hi all.

I'm making the port of the SIP-Communicator UA (old version) for the most
recent version of JAIN-SIP but I'm facing several problems.
The one that I'm stuck now occurs when I try to respond with another
Register request to the 401 Unauthorized response when I try to register the
UA.

In the UA I have something like this:
   ClientTransaction retryTran = sipProvider.getNewClientTransaction
(request);

It worked fine with an older JAIN-SIP.
But now I see that SipProviderImpl.getNewClientTransaction (Request) has
been totally re-written and I'm getting the Exception
javax.sip.TransactionUnavailableException: Transaction already exists!

This is the top Via in the Request that I'm trying to send:
getTopmostVia() = Via: SIP/2.0/UDP 10.112.64.231:5060
;branch=z9hG4bK63e17a0c6cf77b3b953c22feb75e3db5

The branch ID is equal to the branch ID sent in the first Register request.
So I must be getting this exception because the last condition fails on the
IF clause:

SipProviderImpl.getNewClientTransaction(Request)
(...)
        if (sipRequest.getTopmostVia().getBranch() != null &&
             sipRequest.getTopmostVia().getBranch().startsWith(
SIPConstants.BRANCH_MAGIC_COOKIE ) &&
             sipStack.findTransaction((SIPRequest)request, false) != null) {
            throw new TransactionUnavailableException("Transaction already
exists!");
        }
(...)

My question is: do I have to explicity terminate the previous Client
Transaction? If so, how can I do that?


Regards,
Miguel Freitas

-- 
- - - -                                     - - - -
- Telecommunications Institute   -
- Instituto de Telecomunicacoes  -
- Aveiro, Portugal                         -
- www.it.pt                                    -
- - - -                                     - - - -

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