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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"
ecpb "google.golang.org/grpc/examples/features/proto/echo"
hwpb "google.golang.org/grpc/examples/helloworld/helloworld"
)
var addr = flag.String("addr", "localhost:50051", "the address to connect to")
// callSayHello calls SayHello on c with the given name, and prints the
// response.
func callSayHello(c hwpb.GreeterClient, name string) {
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
r, err := c.SayHello(ctx, &hwpb.HelloRequest{Name: name})
if err != nil {
log.Fatalf("client.SayHello(_) = _, %v", err)
}
fmt.Println("Greeting: ", r.Message)
}
func callUnaryEcho(client ecpb.EchoClient, message string) {
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
resp, err := client.UnaryEcho(ctx, &ecpb.EchoRequest{Message: message})
if err != nil {
log.Fatalf("client.UnaryEcho(_) = _, %v: ", err)
}
fmt.Println("UnaryEcho: ", resp.Message)
}
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()
fmt.Println("--- calling helloworld.Greeter/SayHello ---")
// Make a greeter client and send an RPC.
hwc := hwpb.NewGreeterClient(conn)
callSayHello(hwc, "multiplex")
fmt.Println()
fmt.Println("--- calling routeguide.RouteGuide/GetFeature ---")
// Make a routeguild client with the same ClientConn.
rgc := ecpb.NewEchoClient(conn)
callUnaryEcho(rgc, "this is examples/multiplex")
}
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