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/*
*
* Copyright 2018 gRPC authors.
*
* 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.
*
*/
// This binary can only run on Google Cloud Platform (GCP).
package main
import (
"flag"
"time"
"golang.org/x/net/context"
grpc "google.golang.org/grpc"
"google.golang.org/grpc/credentials/alts"
"google.golang.org/grpc/grpclog"
testpb "google.golang.org/grpc/interop/grpc_testing"
)
const (
value = "test_value"
)
var (
hsAddr = flag.String("alts_handshaker_service_address", "", "ALTS handshaker gRPC service address")
serverAddr = flag.String("server_address", ":8080", "The port on which the server is listening")
)
func main() {
flag.Parse()
opts := alts.DefaultClientOptions()
if *hsAddr != "" {
opts.HandshakerServiceAddress = *hsAddr
}
altsTC := alts.NewClientCreds(opts)
// Block until the server is ready.
conn, err := grpc.Dial(*serverAddr, grpc.WithTransportCredentials(altsTC), grpc.WithBlock())
if err != nil {
grpclog.Fatalf("gRPC Client: failed to dial the server at %v: %v", *serverAddr, err)
}
defer conn.Close()
grpcClient := testpb.NewTestServiceClient(conn)
// Call the EmptyCall API.
ctx := context.Background()
request := &testpb.Empty{}
if _, err := grpcClient.EmptyCall(ctx, request); err != nil {
grpclog.Fatalf("grpc Client: EmptyCall(_, %v) failed: %v", request, err)
}
grpclog.Info("grpc Client: empty call succeeded")
// This sleep prevents the connection from being abruptly disconnected
// when running this binary (along with grpc_server) on GCP dev cluster.
time.Sleep(1 * time.Second)
}
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