Bug 1246363: add logging to detect if relay only option is set. r=mjf

--HG--
extra : rebase_source : b5c62327575846c894ce8e8b252bb7397ea913ac

media/mtransport/third_party/nICEr/src/ice/ice_component.c

@@ -252,8 +252,15 @@ static int nr_ice_component_initialize_udp(struct nr_ice_ctx_ *ctx,nr_ice_compon
           cand=0;
         }
       }
+      else{
+        r_log(LOG_ICE,LOG_WARNING,"ICE(%s): relay only option results in no host candidate for %s",ctx->label,addrs[i].addr.as_string);
+      }
 
 #ifdef USE_TURN
+      if ((ctx->flags & NR_ICE_CTX_FLAGS_RELAY_ONLY) &&
+          (ctx->turn_server_ct == 0)) {
+        r_log(LOG_ICE,LOG_ERR,"ICE(%s): relay only option is set without any TURN server configured",ctx->label);
+      }
       /* And both a srvrflx and relayed candidate for each TURN server (unless
          we're in relay-only mode, in which case just the relayed one) */
       for(j=0;j<ctx->turn_server_ct;j++){
@@ -418,6 +425,7 @@ static int nr_ice_component_initialize_tcp(struct nr_ice_ctx_ *ctx,nr_ice_compon
         ABORT(r);
     }
     if (ctx->flags & NR_ICE_CTX_FLAGS_RELAY_ONLY) {
+      r_log(LOG_ICE,LOG_WARNING,"ICE(%s): relay only option results in ICE TCP being disabled",ctx->label);
       ice_tcp_disabled = 1;
     }