package main

import (
	"fmt"
	"net"

	"github.com/hashicorp/go-msgpack/codec"
)

type ping struct {
	SeqNo      uint32
	Node       string
	SourceAddr []byte
	SourcePort uint16
	SourceNode string
}

func main() {
	conn, err := net.Dial("udp", "127.0.0.1:7946")
	if err != nil {
		panic(err)
	}
	defer conn.Close()

	p := ping{
		SeqNo:      1,
		Node:       "test-node",
		SourceAddr: []byte{127, 0, 0, 1},
		SourcePort: 7947,
		SourceNode: "ocaml-node",
	}

	var buf []byte
	enc := codec.NewEncoderBytes(&buf, &codec.MsgpackHandle{})
	if err := enc.Encode(&p); err != nil {
		panic(err)
	}

	msg := append([]byte{0}, buf...)
	fmt.Printf("Sending %d bytes: %x\n", len(msg), msg)
	fmt.Printf("Message type: 0 (ping)\n")
	fmt.Printf("Msgpack payload: %x\n", buf)

	n, err := conn.Write(msg)
	if err != nil {
		panic(err)
	}
	fmt.Printf("Sent %d bytes\n", n)
}