[Sipp-users] peer_tag_param

[Kotamarti, S. <sko...@so...>]

Hi All,

I am trying to test a Re-INVITE scenario, in which the UAC gets answered =
first with null SDP in 200 OK and re-INVITED with actual SDP. The =
scenario is as below

      INVITE ---------->         1         0         0       =20
         100 <----------         1         0                   0   =20
   =20
         180 <----------         0         0                   0   =20
   =20
         200 <---------- E-RTD   1         0                   0   =20
   =20
         ACK ---------->         1         0                       =20
   =20
      INVITE <----------         1         0                   0   =20
   =20

         200 ---------->         1         0         0       =20
         ACK <----------         1         0                   0   =20
   =20

   Var Pause [   4000ms]         1                                 =20
    0       =20
         BYE ---------->         1         0                       =20
   =20
         200 <----------         0         0                   1   =20

When I am trying to send the BYE as below for the original INVITE,=20


      BYE sip:[service]@[remote_ip]:[remote_port] SIP/2.0     =20
      Via: SIP/2.0/[transport] [local_ip]:[local_port]
      From: sipp <sip:sipp@[local_ip]:[local_port]>;tag=3D[call_number]
      To: sut <sip:[service]@[remote_ip]:[remote_port]>[peer_tag_param]
      Call-ID: [call_id]
      CSeq: 2 BYE
      Contact: sip:sipp@[local_ip]:[local_port]
      Max-Forwards: 70
      Subject: Performance Test
      Content-Length: 0

The peer_tag_param always seems to be taken from 'To' header of the =
previous INVITE ( which happens to be a re-INVITE) instead of from =
'From' header. As a result the BYE fails.

Does anybody know how to fix this issue? Thanks

--Srinivas