WIP test-client: implementing sendUDP

cmd/test-client/main.go

@@ -83,7 +83,30 @@ func sendTCP() {
 }
 
 func sendUDP() {
-	//TODO: implement this part
+	var (
+		addr   *net.UDPAddr
+		conn   *net.UDPConn
+		err    error
+		buf, b []byte
+	)
+
+	if addr, err = net.ResolveUDPAddr("udp", viper.GetString("server")); err != nil {
+		log.Fatal().Err(err).Str("server", viper.GetString("server")).Msg("udp resolve address")
+	}
+
+	if conn, err = net.DialUDP("udp", nil, addr); err != nil {
+		log.Fatal().Err(err).Str("server", viper.GetString("server")).Msg("dial server udp")
+	}
+
+	buf = make([]byte, 4096)
+	for {
+		sb := slicewriter.NewSliceWriter(buf)
+		if _, err = fmt.Fprintf(sb, "client %s | %v | %s", viper.GetString("name"), time.Now(), viper.GetString("message")); err != nil {
+			log.Fatal().Err(err).Msg("Failed to build client message")
+		}
+		b = sb.Bytes()
+	}
+	//TODO: complete the implementation of sendUDP
 }
 
 func parseFlags() {