pwakano left a comment (kamailio/kamailio#4169)
@miconda , sorry to comment on a closed ticket, but I think this change has
introduced a problem when closing a dialog via timeout when the caller BYE
fails....
My scenario is the following, a webrtc client initiates a call and Kamailio is
converting to UDP for the other end. The websocket is closed unexpectedly, then
I capture this event and set a dialog timeout of 1s to terminate the call on
the UDP end. This used to work on 5.8, but isn't anymore on 6.0.2.
Upon checking the logs and changes I noticed this change is likely the cause,
because now the dlg_bye_all only sends the BYE to the callee if the BYE to the
caller returned 0, but in the webrtc case, it is failing with this error:
```
/usr/sbin/kamailio[2797042]: ERROR: <<null>:0> <core> [core/resolve.c:1773]:
sip_hostport2su(): could not resolve hostname: "mywebrtc.invalid"
/usr/sbin/kamailio[2797042]: ERROR: <<null>:0> tm [ut.h:302]: uri2dst2():
failed to resolve "mywebrtc.invalid"
/usr/sbin/kamailio[2797042]: ERROR: <<null>:0> tm [uac.c:546]: t_uac_prepare():
no socket found
/usr/sbin/kamailio[2797042]: ERROR: <<null>:0> dialog [dlg_req_within.c:459]:
send_bye(): failed to send the BYE request
```
so then the callee isn't sent a BYE due to this logic change:
```
- ret = send_bye(dlg, DLG_CALLER_LEG, &all_hdrs);
- ret |= send_bye(dlg, DLG_CALLEE_LEG, &all_hdrs);
+ ret = send_bye(dlg, DLG_CALLER_LEG, &all_hdrs, 0);
+ if(ret == 0) {
+ ret |= send_bye(dlg, DLG_CALLEE_LEG, &all_hdrs, 1);
+ }
```
The error to resolve "mywebrtc.invalid" doesn't happen for a normal BYE coming
from the UDP end because the NAT handling uses the received/rport instead of
resolving the VIA domain but in the timeout case this isn't working...
Is there anything I can do on the NAT handling side to overcome this situation
or should I open/repopen a ticket in github?
--
Reply to this email directly or view it on GitHub:
https://github.com/kamailio/kamailio/issues/4169#issuecomment-3322422832
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