func getHelloWorld(client pb.TalkMessageClient, content string) {
msg, err := client.GetHelloWorld(context.Background(), &pb.Msg{Content: content})
if err != nil {
grpclog.Fatalf("fail to call getHelloWorld: %v", err)
}
grpclog.Println("get Message from Server: ", msg.Content)
}
func letsStreaming(client pb.TalkMessageClient) {
// messages
letters := []string{"a", "b", "c", "d", "e", "f", "g", "h"}
stream, err := client.LetsStreaming(context.Background())
if err != nil {
grpclog.Fatalf("%v.RecordRoute(_) = _, %v", client, err)
}
// receive msg
waitc := make(chan struct{})
go func() {
for {
in, err := stream.Recv()
if err == io.EOF {
// read done
close(waitc)
return
}
if err != nil {
grpclog.Fatalf("Failed to receive a note : %v", err)
}
grpclog.Printf("Got message %s", in.Content)
}
}()
// send msg
for _, str := range letters {
grpclog.Printf("send msg: %v", str)
if err := stream.Send(&pb.Msg{Content: str}); err != nil {
grpclog.Fatalf("%v.Send(%v) = %v", stream, str, err)
}
sleep := 5
grpclog.Printf("sleep for %v seconds", sleep)
time.Sleep(time.Duration(sleep) * time.Second) //"sleep for 5 seconds"
}
// close send
stream.CloseSend()
<-waitc
}