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res_pjsip_session: Send Session Interval too small response 

Handle session interval lower than endpoint's configured minimum timer
when sending first answer. Timer setting is checked during this step and
needs to handled appropriately.
Before this change, no response was sent at all. After this change a
response with 422 Session Interval too small is sent to UAC.

(cherry picked from commit 98665a14b3)
This commit is contained in:
Bastian Triller 2023-08-28 09:16:43 +02:00 committed by Asterisk Development Team
parent 92ac4efec7
commit 9b1071f259
1 changed files with 9 additions and 4 deletions
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13
res/res_pjsip_session.c
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@ -4053,15 +4053,20 @@ static int new_invite(struct new_invite *invite)
* so let's go ahead and send a 100 Trying out to stop any
* retransmissions.
*/
if (pjsip_inv_initial_answer(invite->session->inv_session, invite->rdata, 100, NULL, NULL, &tdata) != PJ_SUCCESS) {
if (tdata) {
pjsip_inv_send_msg(invite->session->inv_session, tdata);
} else {
pjsip_inv_terminate(invite->session->inv_session, 500, PJ_TRUE);
}
goto end;
}
ast_trace(-1, "%s: Call (%s:%s) to extension '%s' sending 100 Trying\n",
ast_sip_session_get_name(invite->session),
invite->rdata->tp_info.transport->type_name,
pj_sockaddr_print(&invite->rdata->pkt_info.src_addr, buffer, sizeof(buffer), 3),
invite->session->exten);
if (pjsip_inv_initial_answer(invite->session->inv_session, invite->rdata, 100, NULL, NULL, &tdata) != PJ_SUCCESS) {
pjsip_inv_terminate(invite->session->inv_session, 500, PJ_TRUE);
goto end;
}
ast_sip_session_send_response(invite->session, tdata);
sdp_info = pjsip_rdata_get_sdp_info(invite->rdata);