[OpenSIPS-Devel] [OpenSIPS/opensips] 57508c: registrar: Honor pn_refresh_timeout for PN branch ...

[Liviu Chircu]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 57508c49eb220b8c31e8bd9e1a6117c60b0f51b9
      https://github.com/OpenSIPS/opensips/commit/57508c49eb220b8c31e8bd9e1a6117c60b0f51b9
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2026-05-27 (Wed, 27 May 2026)

  Changed paths:
    M lib/reg/pn.c
    M modules/event_routing/api.h
    M modules/event_routing/ebr_data.c
    M modules/event_routing/ebr_data.h
    M modules/event_routing/event_routing.c
    M modules/tm/t_fwd.c
    M modules/tm/t_fwd.h
    M modules/tm/tm.c
    M modules/tm/tm_load.h

  Log Message:
  -----------
  registrar: Honor pn_refresh_timeout for PN branch waits

pn_refresh_timeout was only limiting the EBR subscription lifetime.  For
initial INVITEs to PN-only contacts, the TM phony branch created by
t_wait_for_new_branches() could remain pending until fr_inv_timeout
after the PN refresh window had already expired.

Add opt-in EBR expiry notifications for function-based NOTIFY subs and
use them from registrar PN handling.  On subscription expiry, release
the associated TM phony branch through a new TM bind which can resolve
the EBR remote transaction reference and generate a local 408 for that
branch.  Matching contact updates continue to inject the refreshed
branch as before.

This caps the PN-only INVITE wait at pn_refresh_timeout without
shortening timers for real branches in mixed lookups.



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