Initial import

ping_client/main.go

@@ -0,0 +1,58 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+	"time"
+
+	"google.golang.org/grpc"
+
+	pb "lume-grpc/ping"
+)
+
+const (
+	address = "localhost:50051"
+)
+
+func genPayload(s int) string {
+	var p string
+	var start int = 60
+	for i := start; i < (start + s); i++ {
+		p += string(i)
+	}
+	return p
+}
+
+func main() {
+	var i uint32
+	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
+	defer cancel()
+
+	data := genPayload(64)
+	if len(os.Args) > 1 {
+		data = os.Args[1]
+	}
+	conn, err := grpc.DialContext(ctx, address, grpc.WithInsecure(), grpc.WithBlock())
+	if err != nil {
+		log.Fatalf("did not connect: %v", err)
+	}
+	defer conn.Close()
+	c := pb.NewPingClient(conn)
+
+	for i = 1; ; i++ {
+		rtt := time.Now()
+		ctx, cancel = context.WithTimeout(context.Background(), 10*time.Second)
+		r, err := c.Ping(ctx, &pb.PingRequest{Data: data, Seq: i})
+		if err != nil {
+			log.Printf("could not connect to: %v", err)
+			time.Sleep(1 * time.Second)
+			continue
+		}
+		// log.Printf("%d characters roundtrip to (%s): seq=%d time=%s", len(r.Data), address, r.Seq, time.Since(rtt))
+		fmt.Printf("%d bytes from %s: seq=%d time=%s\n", len(r.Data), address, r.Seq, time.Since(rtt))
+		//log.Printf("Received: %v", r.Data)
+		time.Sleep(1 * time.Second)
+	}
+}