[Serusers] loose_route bug?!

[Greger V. Teigre]

The Route header is used:
Route: <sip:10.1.10.65;ftag=1cac2190;lr>,<sip:10.1.10.65;ftag=1cac2190;lr>
Looks like you have double record routing for the INVITE. Have you set modparam use_double_rr (rr module)? 
g-) 
  ----- Original Message ----- 
  From: Ramin Nikaeen 
  To: Serusers 
  Sent: Tuesday, February 21, 2006 3:15 AM
  Subject: [Serusers] loose_route bug?!




  Hi Everyone,



  I am using SER version 

  Server: Sip EXpress router (0.9.2 (i386/linux)).



  I am initiating a call from a caller sip UA to a callee sip UA and I am receiving the 

  ACK response to the INVITE from the callee on SER. Before loose_route processing 

  it looks like this:





  ACK sip:2224440133 at 10.1.10.65:5060 SIP/2.0

  Via: SIP/2.0/UDP 172.16.15.52:5060;rport;branch=z9hG4bK83e54f590401584628d473053d1ef8a8

  From: <sip:2224440132 at xxx.yyy.zzz:5060>;tag=1cac2190

  To: <sip:2224440131 at xxx.yyy.zzz:5060>;tag=d323038ba423a329i0

  Call-ID: 66cb6ba85191e6025ebde2c552177442 at 172.16.15.52

  CSeq: 1 ACK                                                                                                                         

  Contact: <sip:2224440132 at 172.16.15.52:5060>

  Max-Forwards: 70                                                                                                                    

  Route: <sip:10.1.10.65;ftag=1cac2190;lr>,<sip:10.1.10.65;ftag=1cac2190;lr>

  Content-Length: 0                                                                                                                   

                                                                                                                                      

                                                                                                                                      

  After loose_route processing and relaying, the ACK, instead of being routed to the callee

  (2224440133) User Agent, it is received back at SER looking like this:





  ACK sip:10.1.10.65;ftag=1cac2190;lr SIP/2.0

  Record-Route: <sip:10.1.10.65;ftag=1cac2190;lr=on>

  Via: SIP/2.0/UDP 10.1.10.65;branch=0

  Via: SIP/2.0/UDP 172.16.15.52:5060;rport=5060;branch=z9hG4bK83e54f590401584628d473053d1ef8a8

  From: <sip:2224440132 at xxx.yyy.zzz:5060>;tag=1cac2190

  To: <sip:2224440131 at xxx.yyy.zzz:5060>;tag=d323038ba423a329i0

  Call-ID: 66cb6ba85191e6025ebde2c552177442 at 172.16.15.52

  CSeq: 1 ACK

  Contact: <sip:2224440132 at 172.16.15.52:5060>

  Max-Forwards: 16

  Route:

  Content-Length: 0




  Why is SER routing this ACK request incorrectly?! 



  Is the syntax of the original ACK generated by the Callee's UA incorrect?!



  I would appreciate any help as I can't figure it whether there is something wrong

  with ACK's syntax or there is a bug in SER's loose_route processing?!



  Thanks a lot



  ramin



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