FFXIVLauncher-Netmaui

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using System;
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using System.Diagnostics;
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using System.Net;
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using System.Net.Sockets;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading;
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namespace XIVLauncher.Common.Http
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{
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    // This is a very dumb HTTP server that just accepts GETs and fires events with the requested URL
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    internal class HttpServer
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    {
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        private readonly TcpListener listener;
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        private readonly byte[] httpResponse;
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        public EventHandler<HttpServerGetEvent> GetReceived;
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        private bool _isRunning = false;
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        public class HttpServerGetEvent
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        {
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            public string Path { get; set; }
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        }
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        public HttpServer(int port, string version)
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        {
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            this.listener = new TcpListener(IPAddress.Any, port);
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            this.httpResponse = Encoding.Default.GetBytes(
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                "HTTP/1.0 200 OK\n" +
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                "Content-Type: application/json; charset=UTF-8\n" +
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                "\n{\"app\":\"XIVLauncher\", \"version\":\"" + version + "\"}"
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            );
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        }
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        public void Start()
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        {
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            try
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            {
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                this.listener.Start();
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                _isRunning = true;
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                while (_isRunning)
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                {
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                    if (!this.listener.Pending())
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                    {
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                        Thread.Sleep(200);
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                        continue;
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                    }
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                    var client = this.listener.AcceptTcpClient();
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                    while (client.Connected)
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                    {
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                        var networkStream = client.GetStream();
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                        var message = new byte[1024];
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                        networkStream.Read(message, 0, message.Length);
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                        var messageString = Encoding.Default.GetString(message);
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                        Debug.WriteLine(Encoding.Default.GetString(message));
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                        networkStream.Write(httpResponse, 0, httpResponse.Length);
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                        networkStream.Close(3);
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                        GetReceived?.Invoke(this, new HttpServerGetEvent
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                        {
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                            Path = Regex.Match(messageString, "GET (?<url>.+) HTTP").Groups["url"].Value
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                        });
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                    }
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                    client.Close();
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                }
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            }
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            catch
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            {
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                // ignored
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            }
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        }
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        public void Stop()
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        {
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            _isRunning = false;
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            this.listener.Stop();
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        }
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    }
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}