SIPDroid sending same branch parameter in SUBSCRIBE request carrying auth parameters

[GoogleCodeExporter]

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What steps will reproduce the problem?
1. Start a SIPDroid client on Motorola Milestone phone
2. Enable the option for Voicemail notification
3. Register with PBXes server

What is the expected output? What do you see instead?

The user should be able to receive voicemail notifications

What version of the product are you using? On what device/operating system?

Sipdroid/1.5.4 beta/Milestone, Motorola phone is being used

Which SIP server are you using? What happens with PBXes?

PBXes is being used

Which type of network are you using?

Wireless

Please provide any additional information below.

We are using a SIP ALG in between SIP server and client. The ALG has a SIP 
stack. When an initial SUBSCRIBE request is sent, it is challenged by the 
server, but when subsequent SUBSCRIBE request is sent with auth parameters, is 
contains the same branch, call-id and from tag. Receiving such a request, the 
SIP ALG retransmits the last response received from the server.

The branch parameter sent by the client in the subsequent request should have a 
different branch parameter.

Original issue reported on code.google.com by abhinava...@gmail.com on 13 Aug 2010 at 6:29

[GoogleCodeExporter]

can you perhaps add a reference to the appropriate RFC?
ie. proof that the error is with sipdroid and not with your ALG. ;-)
thanks

Original comment by thilo.ba...@gmail.com on 25 Aug 2010 at 2:46

[GoogleCodeExporter]

RFC3261 talks about this in Section 8.1.1.7 Via

"The branch parameter value MUST be unique across space and time all requests 
sent by the UA."

This was corrected for the INVITE-401 transactions in R538 and R574 of file 
ExtendedInviteDialog.java.

Original comment by hsha...@gmail.com on 23 Sep 2010 at 5:33