[Asterisk-code-review] res_pjsip: return all codecs on a re-INVITE without SDP (asterisk[16])

[Henning Westerholt]

Attention is currently required from: Henning Westerholt.
Hello Friendly Automation, 

I'd like you to reexamine a change. Please visit

    https://gerrit.asterisk.org/c/asterisk/+/18990

to look at the new patch set (#2).

Change subject: res_pjsip: return all codecs on a re-INVITE without SDP
......................................................................

res_pjsip: return all codecs on a re-INVITE without SDP

Currently chan_pjsip on receiving a re-INVITE without SDP will only return
the codecs that are previously negotiated and not offering all enabled
codecs.

This causes interoperability issues with different equipment (e.g. from Cisco)
for some of our customers and probably also in other scenarios involving 3PCC
infrastructure.

According to RFC 3261, section 14.2 it SHOULD return all codecs on a re-INVITE
without SDP

The PR proposes a new parameter to configure this behaviour:
all_codecs_on_empty_reinvite. It includes the code, documentation and
example configuration additions.

ASTERISK-30193 #close

Change-Id: I69763708d5039d512f391e296ee8a4d43a1e2148
---
M configs/samples/pjsip.conf.sample
M include/asterisk/res_pjsip.h
M res/res_pjsip/config_global.c
M res/res_pjsip/pjsip_config.xml
M res/res_pjsip_session.c
5 files changed, 81 insertions(+), 10 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/90/18990/2
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Gerrit-Project: asterisk
Gerrit-Branch: 16
Gerrit-Change-Id: I69763708d5039d512f391e296ee8a4d43a1e2148
Gerrit-Change-Number: 18990
Gerrit-PatchSet: 2
Gerrit-Owner: Henning Westerholt <hw at gilawa.com>
Gerrit-Reviewer: Friendly Automation
Gerrit-Attention: Henning Westerholt <hw at gilawa.com>
Gerrit-MessageType: newpatchset
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