MODENDP-131 with minor mods

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@9665 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/mod_sofia.h

@@ -368,6 +368,7 @@ struct sofia_profile {
 	uint32_t inuse;
 	time_t started;
 	uint32_t session_timeout;
+	uint32_t minimum_session_expires;
 	uint32_t max_proceeding;
 	uint32_t rtp_timeout_sec;
 	uint32_t rtp_hold_timeout_sec;

src/mod/endpoints/mod_sofia/sofia.c

@@ -575,6 +575,7 @@ void *SWITCH_THREAD_FUNC sofia_profile_thread_run(switch_thread_t *thread, void
 				   NUTAG_ALLOW("NOTIFY"),
 				   NUTAG_ALLOW_EVENTS("talk"),
 				   NUTAG_SESSION_TIMER(profile->session_timeout),
+				   TAG_IF(profile->minimum_session_expires, NUTAG_MIN_SE(profile->minimum_session_expires)),
 				   NTATAG_MAX_PROCEEDING(profile->max_proceeding),
 				   TAG_IF(profile->pres_type, NUTAG_ALLOW("PUBLISH")),
 				   TAG_IF(profile->pres_type, NUTAG_ALLOW("SUBSCRIBE")),
@@ -1682,6 +1683,12 @@ switch_status_t config_sofia(int reload, char *profile_name)
 						if (!switch_true(val)) {
 							profile->pflags |= PFLAG_DISABLE_TIMER;
 						}
+					} else if (!strcasecmp(var, "minimum-session-expires")) {
+						profile->minimum_session_expires = atoi(val);
+						/* per RFC 4028: minimum_session_expires must be > 90 */
+						if (profile->minimum_session_expires < 90) {
+							profile->minimum_session_expires = 90;
+						}
 					} else if (!strcasecmp(var, "enable-100rel")) {
 						if (!switch_true(val)) {
 							profile->pflags |= PFLAG_DISABLE_100REL;