[SR-Users] Re: Change the To Header in the failure_route

-- Henning Westerholt - https://skalatan.de/blog/ Kamailio services - https://gilawa.com > -----Original Message----- > From: sadik.oualla.mohamed--- via sr-users sr-users@lists.kamailio.org > Sent: Dienstag, 9. Juli 2024 18:07 > To: sr-users@lists.kamailio.org > Cc: sadik.oualla.mohamed@gmail.com > Subject: [SR-Users] Change the To Header in the failure_route > > Hello, > > I need help with modifying the "To" header in the "failure_route[ID]{...}". > Specifically, I want to add the "to tag" parameter from the previous SIP > messages of the current dialog(e.g., 180 Ringing, PRACK or final responses). > > Here's the scenario: > > 1. Kamailio receives and relays the SIP messages: INVITE, 180 Ringing, PRACK, > 200 OK, 486 Busy Here. > 2. In my case, the 180 Ringing includes the "to tag" parameter. > 3. When Kamailio receives the 486 response, it triggers "failure_route[ID]" > using "t_on_failure(ID)" method. > 4. I extract the SIP response code and reason from the final response of the > INVITE transcation in this failure_route. > 5. After processing and applying some instructions, I send a reply using > "t_send_reply" with the code and reason extracted. > > The problem: > > - The failure_route[ID] holds the initial INVITE, which has no "to tag" > parameter. > - When I send a reply using "t_send_reply()", Kamailio generates a random "to > tag" different from the previous SIP messages, which confuses my UAC. > I think adding the "to tag" parameter manually might be a solution, but I'm > not sure if I'm doing it correctly or if there is a better approach. I also tried > using uac_replace_to() method, but it doesn't work in the failure_route[ID]. > > How can I make sure the reply in failure_route[ID] uses the correct "to tag" > from the previous SIP messages? Are there any other possibilities to achieve > this? > > Any assistance would be appreciated. > > Thank you! > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe > send an email to sr-users-leave@lists.kamailio.org > Important: keep the mailing list in the recipients, do not reply only to the > sender! > Edit mailing list options or unsubscribe: