Provide scheme as part of audience (#211)

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.0.2
+
+* Fix computation of the audience given to metadata providers to include the scheme.
+
 ## 2.0.1
 
 * Fix computation of authority. This should fix authorization.

lib/src/client/call.dart

@@ -150,7 +150,7 @@ class ClientCall<Q, R> implements Response {
       Future.forEach(
               options.metadataProviders,
               (provider) => provider(
-                  metadata, "${connection.authority}${audiencePath(_method)}"))
+                  metadata, '${connection.scheme}://${connection.authority}${audiencePath(_method)}'))
           .then((_) => _sendRequest(connection, _sanitizeMetadata(metadata)))
           .catchError(_onMetadataProviderError);
     }

lib/src/client/connection.dart

@@ -38,6 +38,7 @@ enum ConnectionState {
 
 abstract class ClientConnection {
   String get authority;
+  String get scheme;
 
   /// Put [call] on the queue to be dispatched when the connection is ready.
   void dispatchCall(ClientCall call);

lib/src/client/http2_connection.dart

@@ -65,6 +65,8 @@ class Http2ClientConnection implements connection.ClientConnection {
   String get authority =>
       options.credentials.authority ?? (port == 443 ? host : "$host:$port");
 
+  String get scheme => options.credentials.isSecure ? 'https' : 'http';
+
   ConnectionState get state => _state;
 
   Future<ClientTransportConnection> connectTransport() async {

lib/src/client/transport/xhr_transport.dart

@@ -143,6 +143,7 @@ class XhrClientConnection extends ClientConnection {
   XhrClientConnection(this.uri);
 
   String get authority => uri.authority;
+  String get scheme => uri.scheme;
 
   void _initializeRequest(HttpRequest request, Map<String, String> metadata) {
     for (final header in metadata.keys) {

pubspec.yaml

@@ -1,7 +1,7 @@
 name: grpc
 description: Dart implementation of gRPC, a high performance, open-source universal RPC framework.
 
-version: 2.0.1
+version: 2.0.2
 
 author: Dart Team <misc@dartlang.org>
 homepage: https://github.com/dart-lang/grpc-dart