Changes transport option in sip.conf so that using multiple instances doesn't stack.

Prior to this patch, Using "transport=" multiple times would cause them to add to one
another like allow/deny. This patch changes that behavior to simply use the transport
option specified last. Also, if no transport option is applied now, the default will
automatically be UDP.

(closes ASTERISK-19352)
Reported by: jamicque
Patches:
	asterisk-19352-transport-warning-message-v1.patch uploaded by Michael L. Young (license 5026)
	issueA19352_no_transport_is_udp.patch uploaded by Walter Doekes (license 5674)
Review: https://reviewboard.asterisk.org/r/1745/diff/#index_header
........

Merged revisions 357266 from http://svn.asterisk.org/svn/asterisk/branches/1.8

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/10@357271 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 9114f8ef3fe8ffab2bbc66fb19b23143e7912162..977c62d2f24794a393076993978ea297c88f0344 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -28154,10 +28154,11 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, str
                        if (handle_t38_options(&peerflags[0], &mask[0], v, &peer->t38_maxdatagram)) {
                                continue;
                        }
-                       if (!strcasecmp(v->name, "transport") && !ast_strlen_zero(v->value)) {
+                       if (!strcasecmp(v->name, "transport")) {
                                char *val = ast_strdupa(v->value);
                                char *trans;
 
+                               peer->transports = peer->default_outbound_transport = 0;
                                while ((trans = strsep(&val, ","))) {
                                        trans = ast_skip_blanks(trans);
 
@@ -28168,7 +28169,7 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, str
                                        } else if (default_tls_cfg.enabled && !strncasecmp(trans, "tls", 3)) {
                                                peer->transports |= SIP_TRANSPORT_TLS;
                                        } else if (!strncasecmp(trans, "tcp", 3) || !strncasecmp(trans, "tls", 3)) {
-                                               ast_log(LOG_WARNING, "'%.3s' is not a valid transport type when %.3senabled=no. If no other is specified, the defaults from general will be used.\n", trans, trans);
+                                               ast_log(LOG_WARNING, "'%.3s' is not a valid transport type when %.3senable=no. If no other is specified, the defaults from general will be used.\n", trans, trans);
                                        } else {
                                                ast_log(LOG_NOTICE, "'%s' is not a valid transport type. if no other is specified, the defaults from general will be used.\n", trans);
                                        }
@@ -28911,8 +28912,8 @@ static int reload_config(enum channelreloadreason reason)
        memset(&default_prefs, 0 , sizeof(default_prefs));
        memset(&sip_cfg.outboundproxy, 0, sizeof(struct sip_proxy));
        sip_cfg.outboundproxy.force = FALSE;            /*!< Don't force proxy usage, use route: headers */
-       default_transports = 0;                         /*!< Reset default transport to zero here, default value later on */
-       default_primary_transport = 0;                  /*!< Reset default primary transport to zero here, default value later on */
+       default_transports = SIP_TRANSPORT_UDP;
+       default_primary_transport = SIP_TRANSPORT_UDP;
        ourport_tcp = STANDARD_SIP_PORT;
        ourport_tls = STANDARD_TLS_PORT;
        externtcpport = STANDARD_SIP_PORT;
@@ -29102,10 +29103,11 @@ static int reload_config(enum channelreloadreason reason)
                        timerb_set = 1;
                } else if (!strcasecmp(v->name, "t1min")) {
                        global_t1min = atoi(v->value);
-               } else if (!strcasecmp(v->name, "transport") && !ast_strlen_zero(v->value)) {
+               } else if (!strcasecmp(v->name, "transport")) {
                        char *val = ast_strdupa(v->value);
                        char *trans;
 
+                       default_transports = default_primary_transport = 0;
                        while ((trans = strsep(&val, ","))) {
                                trans = ast_skip_blanks(trans);