add NAT_SDP route

kamailio/nat-traversal-role.cfg

@@ -22,8 +22,28 @@ kazoo.nat_fix_sdp_request = KZ_NAT_FIX_SDP_REQUEST descr "performs request sdp r
 kazoo.nat_fix_sdp_reply = KZ_NAT_FIX_SDP_REPLY descr "performs reply sdp replacement of private addresses"
 
 ####### NAT Traversal Logic ########
+route[NAT_SDP]
+{
+   if( has_body("application/sdp")) {
+       if( nat_uac_test(KZ_NAT_SDP_TEST)) {
+           xlog("L_DEBUG", "$ci|log|applying sdp nat fix\n");
+           $var(ret) = fix_nated_sdp(KZ_NAT_SDP_FIX);
+           xlog("L_DEBUG", "$ci|log|result of applying sdp nat fix is $var(ret)\n");
+       } else if( is_method("INVITE") && !isflagset(FLAG_INTERNALLY_SOURCED) && is_audio_on_hold()) {
+           xlog("L_DEBUG", "$ci|log|applying sdp nat fix for held channel\n");
+           $var(ret) = fix_nated_sdp(KZ_NAT_SDP_FIX);
+           xlog("L_DEBUG", "$ci|log|result of applying sdp nat fix for held channel is $var(ret)\n");
+       }
+   }
+}
+
 route[NAT_DETECT]
 {
+
+   if($sel(cfg_get.kazoo.nat_fix_sdp_request) == 1) {
+       route(NAT_SDP);
+   }
+
    if ($Rp == "5080") {
        setflag(FLAG_SKIP_NAT_CORRECTION);
        xlog("L_DEBUG", "$ci|log|skipping nat correction on PORT 5080\n");
@@ -61,20 +81,12 @@ route[NAT_DETECT]
       }
    }
 
-   if($sel(cfg_get.kazoo.nat_fix_sdp_request) == 1) {
-       if (has_body("application/sdp") && nat_uac_test(KZ_NAT_SDP_TEST)) {
-           fix_nated_sdp(KZ_NAT_SDP_FIX);
-       }
-   }
-
 }
 
 route[NAT_MANAGE]
 {
-   if(is_reply() && $sel(cfg_get.kazoo.nat_fix_sdp_reply) == 1) {
-       if (has_body("application/sdp") && nat_uac_test(KZ_NAT_SDP_TEST)) {
-           fix_nated_sdp(KZ_NAT_SDP_FIX);
-       }
+   if( is_reply() && $sel(cfg_get.kazoo.nat_fix_sdp_reply) == 1) {
+       route(NAT_SDP);
    }
 
    if ( is_request() && isflagset(FLAG_INTERNALLY_SOURCED)) {