Lanarama Morse Uplink

main.go

package main

import (
	"crypto/rand"
	"fmt"
	"net"
	"time"
)

type morse struct {
	send  bool
	sleep int
}

// lanarama morse code
func main() {
	b := make([]byte, 4096)
	dit := 100     // Morse code dit
	dah := 3 * dit // Morse code dah

	// .-.. .- -. .- .-. .- -- .-
	morse := []morse{
		{true, dit},
		{true, dah},
		{true, dit},
		{true, dit},
		{false, dah},
		{true, dit},
		{true, dah},
		{false, dah},
		{true, dah},
		{true, dit},
		{false, dah},
		{true, dit},
		{true, dah},
		{false, dah},
		{true, dit},
		{true, dah},
		{true, dit},
		{false, dah},
		{true, dit},
		{true, dah},
		{false, dah},
		{true, dah},
		{true, dah},
		{false, dah},
		{true, dit},
		{true, dah},
	}

	rand.Read(b)

	c, err := net.Dial("udp", "[::1]:1337")

	if err != nil {
		fmt.Printf("Error while opening udp socket: %v", err)
		return
	}

	defer c.Close()

	for _, s := range morse {
		tts := time.Duration(int64(time.Second) * int64(s.sleep))
		if s.send {
			fmt.Println("sending")
		} else {
			fmt.Println("not sending")
		}
		for start := time.Now(); time.Since(start) < tts; {
			if s.send {
				c.Write(b)
			}
		}
		time.Sleep(time.Duration(int64(time.Second) * int64(dit)))
	}
}