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.com<https://gilawa.com/>
From: sr-users <[email protected]> On Behalf Of Gerry |
Rigatta
Sent: Wednesday, July 22, 2020 8:58 PM
To: Kamailio (SER) - Users Mailing List <[email protected]>
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?
12<https://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
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