Hi Andrey,
What you say is correct and unfortunately I have the trick here for you
- indeed, the dialog structure is destroyed upon the first BYE (on its
reply actually), so the second one will not match the dialog.... :-|
Maybe we can have a feature request to actually have the dialog
destroyed with a bit of a delay (similar to the transactions), but this
is not so easy to implement.
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
OpenSIPS Summit 27-30 Sept 2022, Athens
https://www.opensips.org/events/Summit-2022Athens/
On 8/10/22 3:57 PM, Andrey F wrote:
Hello team!
Maybe anyone knows, is there a way to process a situation like this?
Scheme:
SIP Softphone A <-> OpenSIPS 3.1 <-> SIP Softphone B
Steps:
1) SIP softphone B sent BYE request;
2) SIP softphone A receives BYE and tried to authorize it (sent 401
response);
3) SIP softphone B receives 401 and generates a new BYE with credentials;
4) OpenSIPS did not pass second BYE request, because dialog was
terminated on first BYE request.
As far as I understand, SIP dialog on opensips is automatically
destroyed after the first BYE was received.
From https://opensips.org/docs/modules/3.1.x/dialog.html
<https://opensips.org/docs/modules/3.1.x/dialog.html>:
1.2. How it works
...
The dialog is automatically destroyed when a“BYE”is received. In
case of no“BYE”, the dialog lifetime is controlled via the default
timeout (see“default_timeout”-default_timeout
<https://opensips.org/docs/modules/3.1.x/dialog.html#param_default_timeout>)
and custom timeout (see“$DLG_timeout”-$DLG_timeout
<https://opensips.org/docs/modules/3.1.x/dialog.html#pv_DLG_timeout>).
The second BYE witch credentials arrived to opensips very quickly
(just a few ms).
My problem is that second BYE can not pass these procedures:
1) *if (topology_hiding_match())*
2)* if (t_check_trans())*
On first BYE I see this in logs, it is matched.
1) *if (topology_hiding_match()) logs:
*
DBG:dialog:api_match_dialog: We found DID param in R-URI with
value of XXXXXXXXX
DBG:dialog:dlg_onroute: route param is 'XXXXXXXXX' (len=12)
DBG:dialog:lookup_dlg: dialog id=1424242860 found on entry 3032
DBG:core:parse_headers: flags=58
DBG:core:parse_to_param: tag=YYYYYYY
DBG:core:parse_to_param: end of header reached, state=11
DBG:core:_parse_to: end of header reached, state=29
DBG:core:_parse_to: display={}, ruri={sip:[email protected]:1
<http://sip:[email protected]:1/>}
DBG:dialog:next_state_dlg: dialog 0x7f16b2b95cf8 changed from
state 4 to state 5, due event 7
DBG:dialog:init_dlg_term_reason: Setting DLG term reason to
[Upstream BYE]
On second BYE I see this in logs, it is not matched.
2) *if (topology_hiding_match()) logs: *Dialog can not be matched
DBG:dialog:api_match_dialog: We found DID param in R-URI with
value of XXXXXXXXX
DBG:dialog:dlg_onroute: route param is 'XXXXXXXXX' (len=12)
DBG:dialog:lookup_dlg: no dialog id=1424242860 found on entry 3032
DBG:dialog:dlg_onroute: unable to find dialog for BYE with route
param 'XXXXXXXXX'
DBG:core:parse_headers: flags=58
DBG:core:parse_to_param: tag=TTTTTT
DBG:core:parse_to_param: end of header reached, state=11
DBG:core:_parse_to: end of header reached, state=29
DBG:core:_parse_to: display={}, ruri={sip:[email protected]:1
<http://sip:[email protected]:1/>}
DBG:dialog:get_dlg: input ci=<CCCCCCCCCCC>(37), tt=<TTTTTT>(15),
ft=<FFFFFFFFF>(14)
DBG:dialog:get_dlg: no dialog callid='CCCCCCCCCCC' found
DBG:dialog:dlg_onroute: Callid 'CCCCCCCCCCC' not found
*
*
3)* if (t_check_trans()) **logs:***transaction can not be matched
DBG:core:parse_headers: flags=78
DBG:tm:t_lookup_request: start searching: hash=44043, isACK=0
DBG:tm:matching_3261: RFC3261 transaction matching failed
DBG:tm:t_lookup_request: no transaction found
DBG:core:parse_headers: flags=ffffffffffffffff
Finally, maybe anyone knows how to resolve this problem?
Thank you!
--
Best regards,
Andrey F
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