Until we can do media level parsing for sendrecv/etc just use the first value found. This crept up when a phone was offered audio+video and returned an inactive video stream. chan_sip thought the phone said to put the person on hold but that was totally wrong. (issue #9319 reported by benbrown)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@59081 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -4731,7 +4731,7 @@ static int process_sdp(struct sip_pvt *p, struct sip_request *req)
 	int codec;
 	int destiterator = 0;
 	int iterator;
-	int sendonly = 0;
+	int sendonly = -1;
 	int numberofports;
 	struct ast_rtp *newaudiortp, *newvideortp;	/* Buffers for codec handling */
 	int newjointcapability;				/* Negotiated capability */
@@ -4965,12 +4965,15 @@ static int process_sdp(struct sip_pvt *p, struct sip_request *req)
 				continue;
 		}
 		if (!strcasecmp(a, "sendonly")) {
+			if (sendonly == -1)
 				sendonly = 1;
 			continue;
 		} else if (!strcasecmp(a, "inactive")) {
+			if (sendonly == -1)
 				sendonly = 2;
 			continue;
 		}  else if (!strcasecmp(a, "sendrecv")) {
+			if (sendonly == -1)
 				sendonly = 0;
 			continue;
 		} else if (strlen(a) > 5 && !strncasecmp(a, "ptime", 5)) {
@@ -5227,7 +5230,7 @@ static int process_sdp(struct sip_pvt *p, struct sip_request *req)
 		ast_set_write_format(p->owner, p->owner->writeformat);
 	}
 	
-	if (sin.sin_addr.s_addr && !sendonly) {
+	if (sin.sin_addr.s_addr && (!sendonly || sendonly == -1)) {
 		ast_queue_control(p->owner, AST_CONTROL_UNHOLD);
 		/* Activate a re-invite */
 		ast_queue_frame(p->owner, &ast_null_frame);
@@ -5243,7 +5246,7 @@ static int process_sdp(struct sip_pvt *p, struct sip_request *req)
 	}
 
 	/* Manager Hold and Unhold events must be generated, if necessary */
-	if (sin.sin_addr.s_addr && !sendonly) {
+	if (sin.sin_addr.s_addr && (!sendonly || sendonly == -1)) {
 		if (ast_test_flag(&p->flags[1], SIP_PAGE2_CALL_ONHOLD)) {
 			append_history(p, "Unhold", "%s", req->data);
 			if (global_callevents)