96 lines
2.7 KiB
Go
96 lines
2.7 KiB
Go
/*
|
|
*
|
|
* 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/codes"
|
|
pb "google.golang.org/grpc/examples/features/proto/echo"
|
|
"google.golang.org/grpc/status"
|
|
)
|
|
|
|
var addr = flag.String("addr", "localhost:50052", "the address to connect to")
|
|
|
|
func unaryCall(c pb.EchoClient, requestID int, message string, want codes.Code) {
|
|
// Creates a context with a one second deadline for the RPC.
|
|
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
|
|
defer cancel()
|
|
|
|
req := &pb.EchoRequest{Message: message}
|
|
|
|
_, err := c.UnaryEcho(ctx, req)
|
|
got := status.Code(err)
|
|
fmt.Printf("[%v] wanted = %v, got = %v\n", requestID, want, got)
|
|
}
|
|
|
|
func streamingCall(c pb.EchoClient, requestID int, message string, want codes.Code) {
|
|
// Creates a context with a one second deadline for the RPC.
|
|
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
|
|
defer cancel()
|
|
|
|
stream, err := c.BidirectionalStreamingEcho(ctx)
|
|
if err != nil {
|
|
log.Printf("Stream err: %v", err)
|
|
return
|
|
}
|
|
|
|
err = stream.Send(&pb.EchoRequest{Message: message})
|
|
if err != nil {
|
|
log.Printf("Send error: %v", err)
|
|
return
|
|
}
|
|
|
|
_, err = stream.Recv()
|
|
|
|
got := status.Code(err)
|
|
fmt.Printf("[%v] wanted = %v, got = %v\n", requestID, want, got)
|
|
}
|
|
|
|
func main() {
|
|
flag.Parse()
|
|
|
|
conn, err := grpc.Dial(*addr, grpc.WithInsecure())
|
|
if err != nil {
|
|
log.Fatalf("did not connect: %v", err)
|
|
}
|
|
defer conn.Close()
|
|
|
|
c := pb.NewEchoClient(conn)
|
|
|
|
// A successful request
|
|
unaryCall(c, 1, "world", codes.OK)
|
|
// Exceeds deadline
|
|
unaryCall(c, 2, "delay", codes.DeadlineExceeded)
|
|
// A successful request with propagated deadline
|
|
unaryCall(c, 3, "[propagate me]world", codes.OK)
|
|
// Exceeds propagated deadline
|
|
unaryCall(c, 4, "[propagate me][propagate me]world", codes.DeadlineExceeded)
|
|
// Receives a response from the stream successfully.
|
|
streamingCall(c, 5, "[propagate me]world", codes.OK)
|
|
// Exceeds propagated deadline before receiving a response
|
|
streamingCall(c, 6, "[propagate me][propagate me]world", codes.DeadlineExceeded)
|
|
}
|