Hello,
Apparently, this is the way the code works:
t_reply.c: if (relayed_code==503 && tm_remap_503_500){ /* replace a final 503 with a 500: * generate a "FAKE" reply and a new to_tag (for easier * debugging)*/
Lets see if maybe others can comment as well. Otherwise you could just open an issue on our tracker, it is probably not that hard to change this.
Cheers,
Henning
-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.comhttps://gilawa.com/
From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Gerry | Rigatta Sent: Wednesday, July 22, 2020 8:58 PM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: [SR-Users] bug ? remap_503_500 breaks dialogs
Hi,
I am using Kamailio 5.2.
Apparently the remapping of 503 to 500 codes in the tm module does also change the to-tag. This behaviour breaks dialogs with yate and therefore calls hang and the 503 remains unacknowledged. After disabling the 503 to 500 remapping with modparam("tm", "remap_503_500", 0) all works fine again.
Changing the to-tag in a dialog seems to contradict RFC3261, or do I see this wrongly? 12https://tools.ietf.org/html/rfc3261#section-12 Dialogs A dialog is identified at each UA with a dialog ID, which consists of a Call-ID value, a local tag and a remote tag…"
Thanks for looking into this.
Gerry