[OpenSIPS-Devel] [OpenSIPS/opensips] d44184: stun: Fix regression in 'use_listeners_as_primary'...

[Liviu Chircu]

  Branch: refs/heads/3.6
  Home:   https://github.com/OpenSIPS/opensips
  Commit: d44184d66db60f55178a4edd6bc7e41cc616cc66
      https://github.com/OpenSIPS/opensips/commit/d44184d66db60f55178a4edd6bc7e41cc616cc66
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2025-09-17 (Wed, 17 Sep 2025)

  Changed paths:
    M modules/stun/stun.c
    M modules/stun/stun.h

  Log Message:
  -----------
  stun: Fix regression in 'use_listeners_as_primary' feature

In commit 8e6000d5f0d8d, it was missed that FD_SET(fd_x...) calls are
idempotent, while reactor_add_reader(fd_x...) calls are not. So when you
perform them multiple times (which the 'use_listeners_as_primary'
feature MAY do), OpenSIPS startup would now ERROR and abort.

Many thanks to Bernard Buitenhuis for an accurate report and sponsoring
the fix!

(cherry picked from commit 561a15515fd1bfac942c34bdbb8d9ce3c0c3ea3a)



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