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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.
*
*/
// Binary client is an example client.
package main
import (
"context"
"flag"
"fmt"
"log"
"time"
"google.golang.org/grpc"
"google.golang.org/grpc/encoding/gzip" // Install the gzip compressor
pb "google.golang.org/grpc/examples/features/proto/echo"
)
var addr = flag.String("addr", "localhost:50051", "the address to connect to")
func main() {
flag.Parse()
// Set up a connection to the server.
conn, err := grpc.Dial(*addr, grpc.WithInsecure(), grpc.WithBlock())
if err != nil {
log.Fatalf("did not connect: %v", err)
}
defer conn.Close()
c := pb.NewEchoClient(conn)
// Send the RPC compressed. If all RPCs on a client should be sent this
// way, use the DialOption:
// grpc.WithDefaultCallOptions(grpc.UseCompressor(gzip.Name))
const msg = "compress"
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
res, err := c.UnaryEcho(ctx, &pb.EchoRequest{Message: msg}, grpc.UseCompressor(gzip.Name))
fmt.Printf("UnaryEcho call returned %q, %v\n", res.GetMessage(), err)
if err != nil || res.GetMessage() != msg {
log.Fatalf("Message=%q, err=%v; want Message=%q, err=<nil>", res.GetMessage(), err, msg)
}
}
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