Merge pull request #39 from siplabs/KAZOO-3507

KAZOO-3507: System-based call waiting feature on Kamailio side

kamailio/default.cfg

@@ -201,6 +201,9 @@ include_file "traffic-filter-role.cfg"
 #!ifdef PUSHER-ROLE
 include_file "pusher-role.cfg"
 #!endif
+#!ifdef RESPONDER-ROLE
+include_file "responder-role.cfg"
+#!endif
 
 ####### Permissions module ##########
 loadmodule "permissions.so"
@@ -253,6 +256,9 @@ route
     route(PREPARE_INITIAL_REQUESTS);
 
     if (isflagset(FLAG_INTERNALLY_SOURCED)) {
+        #!ifdef RESPONDER-ROLE
+        route(HANDLE_RESPOND);
+        #!endif
         route(INTERNAL_TO_EXTERNAL_RELAY);
         exit();
     }

kamailio/local.cfg

@@ -11,6 +11,7 @@ debug = L_INFO
 #!trydef NAT-TRAVERSAL-ROLE
 #!trydef REGISTRAR-ROLE
 #!trydef PRESENCE-ROLE
+#!trydef RESPONDER-ROLE
 
 ## Disabled Roles - remove all but the last '#' to enable
 # # #!trydef TRAFFIC-FILTER-ROLE

kamailio/responder-role.cfg

@@ -0,0 +1,12 @@
+####### Responder Logic ########
+route[HANDLE_RESPOND]
+{
+    $var(header) = $hdr(X-KAZOO-Respond-With);
+    if (not_empty("$var(header)")) {
+        $var(code) = $(var(header){s.substr,0,3}{s.int});
+        $var(msg) = $(var(header){s.substr,4,0});
+        xlog("L_INFO", "$ci|end|Responding with [$var(code)/$var(msg)]");
+        sl_send_reply("$var(code)", "$var(msg)");
+        exit();
+    }
+}