I have a vender B2BUA machine, they handle the BYE
process like this:
....
1. OUA -> BYE -> B2BUA
2. B2BUA -> 200 -> OUA
3. B2BUA -> INVITE (Cseq:2 INVITE) -> TUA
4. TUA -> 200 -> B2BUA
5. B2BUA -> ACK -> TUA
6. B2BUA -> BYE -> TUA
7. TUA -> 200 -> B2BUA
In my stress testing, some of the calls will get
BYE(#6) before ACK (#5), in that case, I can't use the
[last_via:] to response the BYE on the 200OK, because
of the branch tag in the Via header is not matched.
Any possible to get the branch tag in this kind case?
Thanks,
Joseph
For example
<action>
<ereg regexp="BYE (.*)" search_in="msg"
regexp=(.*) search_in="hdr" header="Via:"
check_it="true" assign_to="1" />
</action>
BYE sip:[EMAIL PROTECTED]:5060 SIP/2.0
Via: SIP/2.0/UDP 2.2.2.2:5060;branch=abc123
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