I think I found the reason why I can't remove headers.

http://lists.sip-router.org/pipermail/users/2007-June/011714.html

This article says you can't remove headers which have been set in request_route. All my headers are set in custom route. Some of them need to be modified later, for example in failure_route.

Could someone explain to me what the branch_routes are used for? Does it have to do with forking?

-----Original Message----- From: sr-users-bounces@lists.sip-router.org [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Grant Bagdasarian Sent: Thursday, October 3, 2013 9:11 AM To: Klaus Darilion; Kamailio (SER) - Users Mailing List Subject: Re: [SR-Users] Replace header value in failure_route

Hello Klaus,

No, removing the header doesn't work either. Appending it does, but then I get to X-Dispatcher headers. The second one with the correct value.

The regex, or any other way would be nice to have, because I've tried every function in textops and textopsx. The remove functions don't work. Same applies to the subst functions, but I'm assuming I'm doing something wrong there.

Regards,

Grant

-----Original Message----- From: Klaus Darilion [mailto:klaus.mailinglists@pernau.at] Sent: Wednesday, October 2, 2013 9:13 PM To: Kamailio (SER) - Users Mailing List Cc: Grant Bagdasarian Subject: Re: [SR-Users] Replace header value in failure_route

Do you need the regex?

Does remove/append_hf work? eg:

remove_hf("X-Dispatcher"); append_hf("X-Dispatcher: $(avp(dsattrs){param.value,dispatcher})");

regards klaus

On 02.10.2013 15:55, Grant Bagdasarian wrote:

Hello,

I'm trying to replace the value of a custom header in the failure_route, using the subst function.

subst('/^X-Dispatcher:(.+)$/"X-Dispatcher: $(avp(dsattrs){param.value,dispatcher})"/i');

I also tried it with the subst_hf, but that didn't work either.

I'm getting the following message:

5(19536) DEBUG: <core> [re.c:454]: subst_run(): subst_run: running. r=1

5(19536) DEBUG: textops [textops.c:681]: subst_f(): lst was (nil)

Does anyone have an idea what I'm doing wrong here? I'm not a regex expert, so I'm guessing there is an error in the pattern.

Regards,

Grant

---

SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

_______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

Thank you for the explanation.

I fixed my problem, by setting the t_on_branch in request route and in failure_route. So the branch route is executed for both routes.

-----Original Message----- From: sr-users-bounces@lists.sip-router.org [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Olle E. Johansson Sent: Thursday, October 3, 2013 9:44 AM To: Kamailio (SER) - Users Mailing List Subject: Re: [SR-Users] Replace header value in failure_route

3 okt 2013 kl. 09:38 skrev Grant Bagdasarian GB@cm.nl:

Could someone explain to me what the branch_routes are used for? Does it have to do with forking?

Branch routes are executed after you've relayed with tm, like tm_relay() and before we send out on the network, once per branch. The request route is executed once for an incoming message. If that message forks to two destinations, you will get two branches and thus branch_route is executed once per outbound message.

/O