move a large block out of do_monitor() and into a function,

to improve readability.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@45668 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -14575,6 +14575,59 @@ static int does_peer_need_mwi(struct sip_peer *peer)
 }
 
 
+/*! \brief helper function for the monitoring thread */
+static void check_rtp_timeout(struct sip_pvt *sip, time_t t)
+{
+	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)) {
+			/* 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))) {
+				/* Needs a hangup */
+				if (sip->rtptimeout) {
+					while (sip->owner && ast_channel_trylock(sip->owner)) {
+						ast_mutex_unlock(&sip->lock);
+						usleep(1);
+						ast_mutex_lock(&sip->lock);
+					}
+					if (sip->owner) {
+						if (!(ast_rtp_get_bridged(sip->rtp))) {
+							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_nolock(sip->owner, AST_SOFTHANGUP_DEV);
+						} else
+							ast_log(LOG_NOTICE, "'%s' will not be disconnected in %ld seconds because it is directly bridged to another RTP stream\n", sip->owner->name, (long) (t - sip->lastrtprx));
+						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;
+					}
+				}
+			}
+		}
+	}
+}
+
 /*! \brief The SIP monitoring thread 
 \note	This thread monitors all the SIP sessions and peers that needs notification of mwi
 	(and thus do not have a separate thread) indefinitely 
@@ -14621,54 +14674,7 @@ restartsearch:
 		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)) {
-					/* 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)) {
-					/* 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))) {
-						/* Needs a hangup */
-						if (sip->rtptimeout) {
-							while (sip->owner && ast_channel_trylock(sip->owner)) {
-								ast_mutex_unlock(&sip->lock);
-								usleep(1);
-								ast_mutex_lock(&sip->lock);
-							}
-							if (sip->owner) {
-								if (!(ast_rtp_get_bridged(sip->rtp))) {
-									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_nolock(sip->owner, AST_SOFTHANGUP_DEV);
-								} else
-									ast_log(LOG_NOTICE, "'%s' will not be disconnected in %ld seconds because it is directly bridged to another RTP stream\n", sip->owner->name, (long) (t - sip->lastrtprx));
-								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;
-							}
-						}
-					}
-				}
-			}
+			check_rtp_timeout(sip, t);
 			/* 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) {