Fix the behavior in case of the server is reachable only via an alter…

…nate address (#1480)

Fix the behavior in case of the server is reachable only via an alternate address - this alternate address matching the address, the client provides, is added to the list of accessible addresses so that the TranslateApplicationDescription method works correctly and the client gets back appropriate endpoints with the corresponding alternate address within them (#1480)

Stack/Opc.Ua.Core/Stack/Server/ServerBase.cs

@@ -954,7 +954,7 @@ protected IList<BaseAddress> FilterByEndpointUrl(Uri endpointUrl, IList<BaseAddr
                     {
                         if (alternateUrl.DnsSafeHost == endpointUrl.DnsSafeHost)
                         {
-                            accessibleAddresses.Add(baseAddress);
+                            accessibleAddresses.Add(new BaseAddress() { Url = alternateUrl, ProfileUri = baseAddress.ProfileUri, DiscoveryUrl = alternateUrl });
                             break;
                         }
                     }