Merge pull request #1191 in FS/freeswitch from FS-9154-add-remove-video-on-re-invites to master

* commit '40bfe0ff':
  FS-9154: [freeswitch-core] Add & remove video on re-invites #resolve

src/include/switch_types.h

@@ -1546,6 +1546,9 @@ typedef enum {
 	CF_RTT,
 	CF_WANT_RTT,
 	CF_AUDIO,
+	CF_AWAITING_STREAM_CHANGE,
+	CF_PROCESSING_STREAM_CHANGE,
+	CF_STREAM_CHANGED,
 	/* WARNING: DO NOT ADD ANY FLAGS BELOW THIS LINE */
 	/* IF YOU ADD NEW ONES CHECK IF THEY SHOULD PERSIST OR ZERO THEM IN switch_core_session.c switch_core_session_request_xml() */
 	CF_FLAG_MAX

src/mod/endpoints/mod_sofia/mod_sofia.c

@@ -2170,6 +2170,27 @@ static switch_status_t sofia_receive_message(switch_core_session_t *session, swi
 	case SWITCH_MESSAGE_INDICATE_RESPOND:
 		{
 
+			if (switch_channel_test_flag(tech_pvt->channel, CF_AWAITING_STREAM_CHANGE)) {
+				switch_channel_clear_flag(tech_pvt->channel, CF_AWAITING_STREAM_CHANGE);
+
+				switch_core_session_local_crypto_key(tech_pvt->session, SWITCH_MEDIA_TYPE_AUDIO);
+				switch_core_media_gen_local_sdp(session, SDP_TYPE_RESPONSE, NULL, 0, NULL, 0);
+						
+				if (sofia_use_soa(tech_pvt)) {
+					nua_respond(tech_pvt->nh, SIP_200_OK,
+								SIPTAG_CONTACT_STR(tech_pvt->reply_contact),
+								SOATAG_USER_SDP_STR(tech_pvt->mparams.local_sdp_str),
+								SOATAG_REUSE_REJECTED(1),
+								SOATAG_AUDIO_AUX("cn telephone-event"),
+								TAG_IF(sofia_test_pflag(tech_pvt->profile, PFLAG_DISABLE_100REL), NUTAG_INCLUDE_EXTRA_SDP(1)), TAG_END());
+				} else {
+					nua_respond(tech_pvt->nh, SIP_200_OK,
+								NUTAG_MEDIA_ENABLE(0),
+								SIPTAG_CONTACT_STR(tech_pvt->reply_contact),
+								SIPTAG_CONTENT_TYPE_STR("application/sdp"), SIPTAG_PAYLOAD_STR(tech_pvt->mparams.local_sdp_str), TAG_END());
+				}
+			}
+
 			if (msg->numeric_arg || msg->string_arg) {
 				int code = msg->numeric_arg;
 				const char *reason = NULL;

src/mod/endpoints/mod_sofia/sofia.c

@@ -3255,6 +3255,7 @@ void *SWITCH_THREAD_FUNC sofia_profile_thread_run(switch_thread_t *thread, void
 				   NUTAG_ALLOW_EVENTS("hold"),
 				   NUTAG_ALLOW_EVENTS("conference"),
 				   NUTAG_APPL_METHOD("OPTIONS"),
+				   NUTAG_APPL_METHOD("INVITE"),
 				   NUTAG_APPL_METHOD("REFER"),
 				   NUTAG_APPL_METHOD("REGISTER"),
 				   NUTAG_APPL_METHOD("NOTIFY"), NUTAG_APPL_METHOD("INFO"), NUTAG_APPL_METHOD("ACK"), NUTAG_APPL_METHOD("SUBSCRIBE"),
@@ -7253,7 +7254,7 @@ static void sofia_handle_sip_i_state(switch_core_session_t *session, int status,
                 //if ((sofia_test_flag(tech_pvt, TFLAG_LATE_NEGOTIATION) || switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND)) {
 				//	switch_core_media_set_sdp_codec_string(session, r_sdp, status < 200 ? SDP_TYPE_REQUEST : SDP_TYPE_RESPONSE);
 				//}
-
+				switch_core_media_set_sdp_codec_string(session, r_sdp, SDP_TYPE_REQUEST);
 				sofia_glue_pass_sdp(tech_pvt, (char *) r_sdp);
 				sofia_set_flag(tech_pvt, TFLAG_NEW_SDP);
 
@@ -8160,6 +8161,7 @@ static void sofia_handle_sip_i_state(switch_core_session_t *session, int status,
 						switch_core_media_gen_local_sdp(session, SDP_TYPE_RESPONSE, NULL, 0, NULL, 0);
 					}
 
+					if (!switch_channel_test_flag(tech_pvt->channel, CF_AWAITING_STREAM_CHANGE)) {
 						if (sofia_use_soa(tech_pvt)) {
 							nua_respond(tech_pvt->nh, SIP_200_OK,
 										SIPTAG_CONTACT_STR(tech_pvt->reply_contact),
@@ -8173,6 +8175,7 @@ static void sofia_handle_sip_i_state(switch_core_session_t *session, int status,
 										SIPTAG_CONTACT_STR(tech_pvt->reply_contact),
 										SIPTAG_CONTENT_TYPE_STR("application/sdp"), SIPTAG_PAYLOAD_STR(tech_pvt->mparams.local_sdp_str), TAG_END());
 						}
+					}
 
 					if (switch_event_create_subclass(&s_event, SWITCH_EVENT_CUSTOM, MY_EVENT_REINVITE) == SWITCH_STATUS_SUCCESS) {
 						switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Unique-ID", switch_core_session_get_uuid(session));