snapshot of https://github.com/grpc/grpc-go.git (master, 2026-09-15; blobs > 131072B omitted)

interop/alts/client/client.go

@@ -0,0 +1,69 @@
+/*
+ *
+ * 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 (
+	"context"
+	"flag"
+	"time"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/alts"
+	"google.golang.org/grpc/grpclog"
+
+	testgrpc "google.golang.org/grpc/interop/grpc_testing"
+	testpb "google.golang.org/grpc/interop/grpc_testing"
+)
+
+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")
+
+	logger = grpclog.Component("interop")
+)
+
+func main() {
+	flag.Parse()
+
+	opts := alts.DefaultClientOptions()
+	if *hsAddr != "" {
+		opts.HandshakerServiceAddress = *hsAddr
+	}
+	altsTC := alts.NewClientCreds(opts)
+	conn, err := grpc.NewClient(*serverAddr, grpc.WithTransportCredentials(altsTC))
+	if err != nil {
+		logger.Fatalf("grpc.NewClient(%q) = %v", *serverAddr, err)
+	}
+	defer conn.Close()
+	grpcClient := testgrpc.NewTestServiceClient(conn)
+
+	// Call the EmptyCall API.
+	ctx := context.Background()
+	request := &testpb.Empty{}
+	// Block until the server is ready.
+	if _, err := grpcClient.EmptyCall(ctx, request, grpc.WaitForReady(true)); err != nil {
+		logger.Fatalf("grpc Client: EmptyCall(_, %v) failed: %v", request, err)
+	}
+	logger.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)
+}