init

examples/forward/udp/cli.go

@@ -0,0 +1,53 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"net"
+	"time"
+)
+
+var (
+	concurrency int
+	saddr       string
+)
+
+func init() {
+	log.SetFlags(log.LstdFlags | log.Lshortfile)
+
+	flag.StringVar(&saddr, "S", ":18080", "server address")
+	flag.IntVar(&concurrency, "c", 1, "Number of multiple echo to make at a time")
+	flag.Parse()
+}
+
+func main() {
+	for i := 0; i < concurrency; i++ {
+		go udpEchoLoop()
+	}
+	select {}
+}
+
+func udpEchoLoop() {
+	addr, err := net.ResolveUDPAddr("udp", saddr)
+	if err != nil {
+		log.Fatal(err)
+	}
+	conn, err := net.DialUDP("udp", nil, addr)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	msg := []byte(`abcdefghijklmnopqrstuvwxyz`)
+	for {
+		if _, err := conn.Write(msg); err != nil {
+			log.Fatal(err)
+		}
+		b := make([]byte, 1024)
+		_, err := conn.Read(b)
+		if err != nil {
+			log.Fatal(err)
+		}
+		// log.Println(string(b[:n]))
+		time.Sleep(100 * time.Millisecond)
+	}
+}