use default endpoint

include/llarp/service/context.hpp

@@ -27,8 +27,8 @@ namespace llarp
       llarp::service::Endpoint *
       getFirstEndpoint();
 
-      huint32_t
-      FindBestAddressFor(const llarp::service::Address &);
+      bool
+      FindBestAddressFor(const llarp::service::Address &, huint32_t &);
 
       /// DRY refactor
       llarp::handlers::TunEndpoint *

llarp/dns_dotlokilookup.cpp

@@ -96,8 +96,13 @@ llarp_dotlokilookup_checkQuery(void *u, uint64_t orig, uint64_t left)
   */
   llarp::service::Context *routerHiddenServiceContext =
       (llarp::service::Context *)dll->user;
-  llarp::huint32_t foundAddr =
-      routerHiddenServiceContext->FindBestAddressFor(addr);
+  llarp::huint32_t foundAddr;
+  if(!routerHiddenServiceContext->FindBestAddressFor(addr, foundAddr))
+  {
+    write404_dnss_response(qr->from, qr->request);
+    delete qr;
+    return;
+  }
 
   // make a dnsd_query_hook_response for the cache
   dnsd_query_hook_response *response = new dnsd_query_hook_response;

llarp/service/context.cpp

@@ -98,19 +98,27 @@ namespace llarp
       return &tunEndpoint->tunif;
     }
 
-    huint32_t
-    Context::FindBestAddressFor(const llarp::service::Address &addr)
+    bool
+    Context::FindBestAddressFor(const llarp::service::Address &addr,
+                                huint32_t &ip)
     {
       auto itr = m_Endpoints.begin();
       while(itr != m_Endpoints.end())
       {
         if(itr->second->HasAddress(addr))
         {
-          return itr->second->ObtainIPForAddr(addr);
+          ip = itr->second->ObtainIPForAddr(addr);
+          return true;
         }
         ++itr;
       }
-      return getFirstEndpoint()->ObtainIPForAddr(addr);
+      itr = m_Endpoints.find("default");
+      if(itr != m_Endpoints.end())
+      {
+        ip = itr->second->ObtainIPForAddr(addr);
+        return true;
+      }
+      return false;
     }
 
     bool