<!-- Kamailio Pull Request Template --> ims_dialog bugfix for registering dialog callbacks ims_qos bugfix for Rx register dialog callback

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#### Type Of Change - [x] Small bug fix (non-breaking change which fixes an issue) - [ ] New feature (non-breaking change which adds new functionality) - [ ] Breaking change (fix or feature that would change existing functionality)

#### Checklist: <!-- Go over all points below, and after creating the PR, tick the checkboxes that apply --> - [x] PR should be backported to stable branches --> 5.3 - [x] Tested changes locally --> Tested locally based on 5.1.6 - [ ] Related to issue #XXXX (replace XXXX with an open issue number)

#### Description <!-- Describe your changes in detail --> ims_dialog bugfix for registering dialog callbacks

In Rx scenarios of parallel forking (several INVITEs with same CALLID and FROMTAG sent to PCSCF) and INVITE for orig and term handled in same PCSCF (means also INVITEs with identical CALLID and FROMTAG) the wrong dialog is selected for registering the callback (i.e. the callback for sending STR) when 200OK from terminator is processed. Root cause is that dialog is searched with callid-fromtag-totag but at the time of dialog insertion (processing of INVITE) no totag is available. fix is to get ctx dialog at 200OK processing before suspending the transaction - save dialog until AAA is received - use this dialog for registering the STR callback.

ims_qos bugfix for Rx register dialog callback

In some scenarios like parallel forking several INVITE with identical CALLID and FROMTAG sent to PCSCF which inserts dialogues for each INVITE. When 200OK is received in PCSCF the dialog callback must be registered for the respective dialog. Currently sometimes the wrong dialog is selected by searching with CALLID FROMTAG and TOTAG thus leading to problem no STR is sent at BYE. Fix is to pickup the right dialog before suspending the transaction during AAR/AAA processing and reuse this saved dialog after AAA reception for registering the dialog callback.

You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/2263

-- Commit Summary --

* ims_dialog bugfix for registering dialog callbacks * ims_qos bugfix for Rx register dialog callback

-- File Changes --

M src/modules/ims_dialog/dlg_cb.c (9) M src/modules/ims_dialog/dlg_cb.h (5) M src/modules/ims_dialog/dlg_handlers.c (1) M src/modules/ims_qos/ims_qos_mod.c (7) M src/modules/ims_qos/rx_aar.c (3) M src/modules/ims_qos/rx_aar.h (1)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/2263.patch https://github.com/kamailio/kamailio/pull/2263.diff