Re-land "Extend the mDNS package with a native extension used on Mac OS"

pkg/mdns/lib/src/lookup_resolver.dart

Index: pkg/mdns/lib/src/lookup_resolver.dart
diff --git a/pkg/mdns/lib/src/lookup_resolver.dart b/pkg/mdns/lib/src/lookup_resolver.dart
index 048069f1067800c6f203bc1f1e90b38f9f09022c..0667a16a4c80ebb9367b9596e0f4736c878b3cdb 100644
--- a/pkg/mdns/lib/src/lookup_resolver.dart
+++ b/pkg/mdns/lib/src/lookup_resolver.dart
@@ -1,6 +1,6 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Fletch project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
+// BSD-style license that can be found in the LICENSE.md file.
 
 library mdns.src.lookup_resolver;
 
@@ -34,13 +34,16 @@ class LookupResolver {
 
   void handleResponse(List<DecodeResult> response) {
     for (var r in response) {
+      var name = r.name.toLowerCase();
+      if (name.endsWith('.')) name = name.substring(0, name.length - 1);
       pendingRequests
-          .where((pendingRequest) => pendingRequest.hostname == r.name)
+          .where((pendingRequest) {
+            return pendingRequest.hostname.toLowerCase() == name;
+          })
           .forEach((pendingRequest) {
                 pendingRequest.completer.complete(r.address);
                 pendingRequest.unlink();
-              });
-          }
+          });
+    }
   }
 }
-