[OpenSIPS-Users] serialize_branch breaking $du

[Duane Larson]

This week just isn't my week when it comes to serialize_branch.  I just
noticed that when I set $ru then $du then append_branch and then set $ru
again with a different uri and serialize the call that should be forwarded
to the $du isn't being forwarded.  Instead the call goes directly to the ip
that is in $ru.  This can be seen in the following debugs that I already
posted to Saul for my Mediaproxy issue.

Syslog Debug
http://pastebin.com/ZpsR5WG8
Do a search for "serialize_branches: Branch information" and you will see
that the branch uri and duri are all set.

Then in this siptrace you see that opensips doesn't send it to the $du
destination but instead sends it directly to the uri in $ru.
http://pastebin.com/Rvg6nNGa


   1. U 2011/07/13 10:49:04.650882 173.XXX.XXX.107:5060 ->
   64.136.174.30:5060
   2. INVITE sip:9014XX7XX9 at 64.136.174.30:5060 SIP/2.0.
   3. Record-Route:
   <sip:173.XXX.XXX.107;lr;ftag=ca22d05c94774292b9249854dada78de;did=3b5.b8577b82>.
   4. Via: SIP/2.0/UDP 173.XXX.XXX.107;branch=z9hG4bK34d7.0f26b417.0.
   5. Via: SIP/2.0/UDP 64.132.245.122:53383
   ;received=64.132.245.122;rport=53383;branch=z9hG4bKPj26a970ba1b3f44f9b823cbbe4c063bd6.
   6. Max-Forwards: 69.
   7. From: "SecondDell" <sip:90133XXX18 at irock.com
   >;tag=ca22d05c94774292b9249854dada78de.
   8. To: <sip:90127X2XX9 at irock.com>.
   9. Contact: <sip:zdcrgabl at 64.132.245.122:53383>.
   10. Call-ID: a46fcbf5977c40c6aa23bac44aa05ff4.
   11. CSeq: 3377 INVITE.
   12. Allow: SUBSCRIBE, NOTIFY, PRACK, INVITE, ACK, BYE, CANCEL, UPDATE,
   MESSAGE, REFER.
   13. Supported: 100rel, norefersub.
   14. User-Agent: Blink 0.2.7 (Windows).
   15. Content-Type: application/sdp.
   16. Content-Length: 693.
   17. P-hint: inbound->inbound .
   18. P-hint: Route[6]: mediaproxy .

I just upgraded to 1.7 and that didn't matter.
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