Merged revisions 38611 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.2

........
r38611 | kpfleming | 2006-07-31 16:14:11 -0500 (Mon, 31 Jul 2006) | 4 lines

don't reissue hangup requests for SIP channels that have expired their RTP timeouts (one time is enough)
don't rescan the SIP private structure list too fast, it can cause channels to not be able to hang up (issue #7495, and probably others)
use ast_softhangup_nolock() since we already hold the channel's lock

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@38612 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -14300,41 +14300,61 @@ static void *do_monitor(void *data)
 		ast_mutex_lock(&iflock);
 restartsearch:		
 		t = time(NULL);
-		for (sip = iflist; sip; sip = sip->next) {
+		/* don't scan the interface list if it hasn't been a reasonable period
+		   of time since the last time we did it (when MWI is being sent, we can
+		   get back to this point every millisecond or less)
+		*/
+		for (sip = iflist; !fastrestart && sip; sip = sip->next) {
 			ast_mutex_lock(&sip->lock);
 			/* Check RTP timeouts and kill calls if we have a timeout set and do not get RTP */
-			if (sip->rtp && sip->owner && (sip->owner->_state == AST_STATE_UP) && !sip->redirip.sin_addr.s_addr) {
-				if (sip->lastrtptx && sip->rtpkeepalive && t > sip->lastrtptx + sip->rtpkeepalive) {
+			if (sip->rtp && sip->owner &&
+			    (sip->owner->_state == AST_STATE_UP) &&
+			    !sip->redirip.sin_addr.s_addr) {
+				if (sip->lastrtptx &&
+				    sip->rtpkeepalive &&
+				    (t > sip->lastrtptx + sip->rtpkeepalive)) {
 					/* Need to send an empty RTP packet */
 					sip->lastrtptx = time(NULL);
 					ast_rtp_sendcng(sip->rtp, 0);
 				}
-				if (sip->lastrtprx && (sip->rtptimeout || sip->rtpholdtimeout) && t > sip->lastrtprx + sip->rtptimeout) {
+				if (sip->lastrtprx &&
+				    (sip->rtptimeout || sip->rtpholdtimeout) &&
+				    (t > sip->lastrtprx + sip->rtptimeout)) {
 					/* Might be a timeout now -- see if we're on hold */
 					struct sockaddr_in sin;
 					ast_rtp_get_peer(sip->rtp, &sin);
 					if (sin.sin_addr.s_addr || 
-							(sip->rtpholdtimeout && 
-							  (t > sip->lastrtprx + sip->rtpholdtimeout))) {
+					    (sip->rtpholdtimeout && 
+					     (t > sip->lastrtprx + sip->rtpholdtimeout))) {
 						/* Needs a hangup */
 						if (sip->rtptimeout) {
-							while(sip->owner && ast_channel_trylock(sip->owner)) {
+							while (sip->owner && ast_channel_trylock(sip->owner)) {
 								ast_mutex_unlock(&sip->lock);
 								usleep(1);
 								ast_mutex_lock(&sip->lock);
 							}
 							if (sip->owner) {
-								ast_log(LOG_NOTICE, "Disconnecting call '%s' for lack of RTP activity in %ld seconds\n", sip->owner->name, (long)(t - sip->lastrtprx));
+								ast_log(LOG_NOTICE,
+									"Disconnecting call '%s' for lack of RTP activity in %ld seconds\n",
+									sip->owner->name,
+									(long) (t - sip->lastrtprx));
 								/* Issue a softhangup */
-								ast_softhangup(sip->owner, AST_SOFTHANGUP_DEV);
+								ast_softhangup_nolock(sip->owner, AST_SOFTHANGUP_DEV);
 								ast_channel_unlock(sip->owner);
+								/* forget the timeouts for this call, since a hangup
+								   has already been requested and we don't want to
+								   repeatedly request hangups
+								*/
+								sip->rtptimeout = 0;
+								sip->rtpholdtimeout = 0;
 							}
 						}
 					}
 				}
 			}
 			/* If we have sessions that needs to be destroyed, do it now */
-			if (ast_test_flag(&sip->flags[0], SIP_NEEDDESTROY) && !sip->packets && !sip->owner) {
+			if (ast_test_flag(&sip->flags[0], SIP_NEEDDESTROY) && !sip->packets &&
+			    !sip->owner) {
 				ast_mutex_unlock(&sip->lock);
 				__sip_destroy(sip, 1);
 				goto restartsearch;