RE: [Sipp-users] peer_tag_param

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

Hi Oliver,
Thanks it works.
=20
--Srinivas
=20

-----Original Message-----
From: Olivier Jacques [mailto:oja...@gm...]
Sent: Wednesday, November 16, 2005 10:42 AM
To: Kotamarti, Srinivas
Cc: sip...@li...
Subject: Re: [Sipp-users] peer_tag_param


Hello Srinivas,

You can use regular expressions to extract the tag you need (  =
<http://sipp.sourceforge.net/doc1.1/reference.html#action_regexp> =
http://sipp.sourceforge.net/doc1.1/reference.html#action_regexp)=20


When receiving the message you need to extract the tag from, insert the =
following regexp:=20
    <action>=20
      <ereg regexp=3D"tag=3D([^ ]*)" search_in=3D"hdr" header=3D"From" =
check_it=3D"true" assign_to=3D"1,2" />=20
      <log message=3D"tag is [$1], [$2]"/>=20
    </action>=20

As you can see if you set -trace_logs on the command line, variable [$1] =
 contains "tag=3Dxxxx" and variable [$2] contains the value of the tag =
only.


Can you tell us if it works in your case?


Olivier.



On 11/16/05, Kotamarti, Srinivas < sko...@so...> wrote:=20

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
         100 <----------         1         0                   0

         180 <----------         0         0                   0

         200 <---------- E-RTD   1         0                   0

         ACK ---------->         1         0

      INVITE <----------         1         0                   0


         200 ---------->         1         0         0
         ACK <----------         1         0                   0


   Var Pause [   4000ms]         1
    0
         BYE ---------->         1         0

         200 <----------         0         0                   1

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


      BYE sip:[service]@[remote_ip]:[remote_port] SIP/2.0
      Via: SIP/2.0/[transport] [local_ip]:[local_port]
      From: sipp <sip:sipp@[local_ip]:[local_port]>;tag=3D[call_number]=20
      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=20
      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


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