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res_pjsip: Add mediasec capabilities.

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This patch adds support for mediasec SIP headers and SDP attributes.
These are defined in RFC 3329, 3GPP TS 24.229 and
draft-dawes-sipcore-mediasec-parameter. The new features are
implemented so that a backbone for RFC 3329 is present to streamline
future work on RFC 3329.

With this patch, Asterisk can communicate with Deutsche Telekom trunks
which require these fields.

ASTERISK-30032

Change-Id: Ia7f5b5ba42db18074fdd5428c4e1838728586be2
This commit is contained in:
Maximilian Fridrich
2022-07-26 14:01:04 +02:00
parent 8d6fdf9c3a
commit 14826a8038
12 changed files with 942 additions and 4 deletions
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5
res/res_pjsip_session.c
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@@ -4816,7 +4816,8 @@ static void session_inv_on_tsx_state_changed(pjsip_inv_session *inv, pjsip_trans
ast_debug(1, "%s: reINVITE received final response code %d\n",
ast_sip_session_get_name(session),
tsx->status_code);
if ((tsx->status_code == 401 || tsx->status_code == 407)
if ((tsx->status_code == 401 || tsx->status_code == 407
|| (session->endpoint->security_negotiation && tsx->status_code == 494))
&& ++session->authentication_challenge_count < MAX_RX_CHALLENGES
&& !ast_sip_create_request_with_auth(
&session->endpoint->outbound_auths,
@@ -4910,7 +4911,7 @@ static void session_inv_on_tsx_state_changed(pjsip_inv_session *inv, pjsip_trans
ast_sip_session_get_name(session),
(int) pj_strlen(&tsx->method.name), pj_strbuf(&tsx->method.name),
tsx->status_code);
if ((tsx->status_code == 401 || tsx->status_code == 407)
if ((tsx->status_code == 401 || tsx->status_code == 407 || tsx->status_code == 494)
&& ++session->authentication_challenge_count < MAX_RX_CHALLENGES
&& !ast_sip_create_request_with_auth(
&session->endpoint->outbound_auths,