grpc-dart/example/helloworld/bin/client.dart

45 lines
1.5 KiB
Dart

// Copyright (c) 2018, the gRPC project authors. Please see the AUTHORS file
// for details. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import 'package:grpc/grpc.dart';
import 'package:helloworld/src/generated/helloworld.pbgrpc.dart';
/// Dart implementation of the gRPC helloworld.Greeter client.
Future<void> main(List<String> args) async {
final channel = ClientChannel(
'localhost',
port: 50051,
options: ChannelOptions(
credentials: ChannelCredentials.insecure(),
codecRegistry:
CodecRegistry(codecs: const [GzipCodec(), IdentityCodec()]),
),
);
final stub = GreeterClient(channel);
final name = args.isNotEmpty ? args[0] : 'world';
try {
final response = await stub.sayHello(
HelloRequest()..name = name,
options: CallOptions(compression: const GzipCodec()),
);
print('Greeter client received: ${response.message}');
} catch (e) {
print('Caught error: $e');
}
await channel.shutdown();
}