B2B don't process calls from old clients without branch tag in via. Maybe in that cases use callid? My solution is attached.
Nick, that is a really bogus case (no branch via) - I'm not even sure if such calls are going though TM at all...Is it wiser to hack and support such a bogus case ?
Anyhow, in other tens of cases, it is assumed that there is a via branch.
However in our setup (about 20000 users) there are number of old clients without via... They are working on old open sips 1.7 proxy servers with TM without problems and now they are working on new opensips 1.8 b2b servers with this patch also without problem. This patch tested and works well.
Thank you Nick, fix uploaded on SVN
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