بناء الدراجة المتقدم أو تطبيق العميل / الخادم بناءً على إطار عمل C #

using System;
using System.Net.Sockets;
using System.Net;
using System.Threading;

namespace ClearServer
{

    class Server
    {
        TcpListener Listener;
        public Server(int Port)
        {
            Listener = new TcpListener(IPAddress.Any, Port);
            Listener.Start();

            while (true)
            {
                TcpClient Client = Listener.AcceptTcpClient();
                Thread Thread = new Thread(new ParameterizedThreadStart(ClientThread));
                Thread.Start(Client);
            }
        }

        static void ClientThread(Object StateInfo)
        {
            new Client((TcpClient)StateInfo);
        }

        ~Server()
        {
            if (Listener != null)
            {
                Listener.Stop();
            }
        }

        static void Main(string[] args)
        {
            DatabaseWorker sqlBase = DatabaseWorker.GetInstance;

            new Server(80);
        }
    }
}

using System;
using System.IO;
using System.Net.Sockets;
using System.Text;
using System.Text.RegularExpressions;

namespace ClearServer
{
    class Client
    {


        public Client(TcpClient Client)
        {

            string Message = "";
            byte[] Buffer = new byte[1024];
            int Count;
            while ((Count = Client.GetStream().Read(Buffer, 0, Buffer.Length)) > 0)
            {
                Message += Encoding.UTF8.GetString(Buffer, 0, Count);

                if (Message.IndexOf("\r\n\r\n") >= 0 || Message.Length > 4096)
                {
                    Console.WriteLine(Message);
                    break;
                }
            }

            Match ReqMatch = Regex.Match(Message, @"^\w+\s+([^\s\?]+)[^\s]*\s+HTTP/.*|");
            if (ReqMatch == Match.Empty)
            {
                ErrorWorker.SendError(Client, 400);
                return;
            }
            string RequestUri = ReqMatch.Groups[1].Value;
            RequestUri = Uri.UnescapeDataString(RequestUri);
            if (RequestUri.IndexOf("..") >= 0)
            {
                ErrorWorker.SendError(Client, 400);
                return;
            }
            if (RequestUri.EndsWith("/"))
            {
                RequestUri += "index.html";
            }

            string FilePath = $"D:/Web/TestSite{RequestUri}";

            if (!File.Exists(FilePath))
            {
                ErrorWorker.SendError(Client, 404);
                return;
            }

            string Extension = RequestUri.Substring(RequestUri.LastIndexOf('.'));

            string ContentType = "";

            switch (Extension)
            {
                case ".htm":
                case ".html":
                    ContentType = "text/html";
                    break;
                case ".css":
                    ContentType = "text/css";
                    break;
                case ".js":
                    ContentType = "text/javascript";
                    break;
                case ".jpg":
                    ContentType = "image/jpeg";
                    break;
                case ".jpeg":
                case ".png":
                case ".gif":
                    ContentType = $"image/{Extension.Substring(1)}";
                    break;
                default:
                    if (Extension.Length > 1)
                    {
                        ContentType = $"application/{Extension.Substring(1)}";
                    }
                    else
                    {
                        ContentType = "application/unknown";
                    }
                    break;
            }

            FileStream FS;
            try
            {
                FS = new FileStream(FilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
            }
            catch (Exception)
            {
                ErrorWorker.SendError(Client, 500);
                return;
            }

            string Headers = $"HTTP/1.1 200 OK\nContent-Type: {ContentType}\nContent-Length: {FS.Length}\n\n";
            byte[] HeadersBuffer = Encoding.ASCII.GetBytes(Headers);
            Client.GetStream().Write(HeadersBuffer, 0, HeadersBuffer.Length);

            while (FS.Position < FS.Length)
            {
                Count = FS.Read(Buffer, 0, Buffer.Length);
                Client.GetStream().Write(Buffer, 0, Count);
            }

            FS.Close();
            Client.Close();
        }
    }
}

using System;
using System.Data.Linq;
namespace ClearServer
{
    class DatabaseWorker
    {

        private static DatabaseWorker instance;

        public static DatabaseWorker GetInstance
        {
            get
            {
                if (instance == null)
                    instance = new DatabaseWorker();
                return instance;
            }
        }


        private DatabaseWorker()
        {
            string connectionStr = databasePath;
            using (DataContext db = new DataContext(connectionStr))
            {
                Table<User> users = db.GetTable<User>();
                foreach (var item in users)
                {
                    Console.WriteLine($"{item.login} {item.password}");
                }
            }
        }
    }
}

using System;
using System.Net;
using System.Net.Sockets;
using System.Reflection;
using System.Security;
using System.Security.Cryptography.X509Certificates;
using System.Security.Permissions;
using System.Security.Policy;
using System.Threading;


namespace ClearServer
{

    sealed class Server
    {
        readonly bool ServerRunning = true;
        readonly TcpListener sslListner;
        public static X509Certificate serverCertificate = null;
        Server()
        {
            serverCertificate = X509Certificate.CreateFromSignedFile(@"C:\ssl\itinder.online.crt");
            sslListner = new TcpListener(IPAddress.Any, 443);
            sslListner.Start();
            Console.WriteLine("Starting server.." + serverCertificate.Subject + "\n" + Assembly.GetExecutingAssembly().Location);
            while (ServerRunning)
            {
                TcpClient SslClient = sslListner.AcceptTcpClient();
                Thread SslThread = new Thread(new ParameterizedThreadStart(ClientThread));
                SslThread.Start(SslClient);
            }
            
        }
        static void ClientThread(Object StateInfo)
        {
            new Client((TcpClient)StateInfo);
        }

        ~Server()
        {
            if (sslListner != null)
            {
                sslListner.Stop();
            }
        }

        public static void Main(string[] args)
        {
            if (AppDomain.CurrentDomain.IsDefaultAppDomain())
            {
                Console.WriteLine("Switching another domain");
                new AppDomainSetup
                {
                    ApplicationBase = AppDomain.CurrentDomain.SetupInformation.ApplicationBase
                };
                var current = AppDomain.CurrentDomain;
                var strongNames = new StrongName[0];
                var domain = AppDomain.CreateDomain(
                    "ClearServer", null,
                    current.SetupInformation, new PermissionSet(PermissionState.Unrestricted),
                    strongNames);
                domain.ExecuteAssembly(Assembly.GetExecutingAssembly().Location);
            }
            new Server();
        }
    }
}

using ClearServer.Core.Requester;
using System;
using System.Net.Security;
using System.Net.Sockets;

namespace ClearServer
{
    public class Client
    {
        public Client(TcpClient Client)
        {
            SslStream SSlClientStream = new SslStream(Client.GetStream(), false);
            try
            {
                SSlClientStream.AuthenticateAsServer(Server.serverCertificate, clientCertificateRequired: false, checkCertificateRevocation: true);
            }
            catch (Exception e)
            {
                Console.WriteLine(
                    "---------------------------------------------------------------------\n" +
                    $"|{DateTime.Now:g}\n|------------\n|{Client.Client.RemoteEndPoint}\n|------------\n|Exception: {e.Message}\n|------------\n|Authentication failed - closing the connection.\n" +
                    "---------------------------------------------------------------------\n");
                SSlClientStream.Close();
                Client.Close();
            }
            new RequestContext(SSlClientStream, Client);
        }

    }
}

using ClearServer.Core.UserController;
using ReServer.Core.Classes;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Security;
using System.Net.Sockets;
using System.Text;
using System.Text.RegularExpressions;

namespace ClearServer.Core.Requester
{
    public class RequestContext
    {
        public string Message = "";
        private readonly byte[] buffer = new byte[1024];
        public string RequestMethod;
        public string RequestUrl;
        public User RequestProfile;
        public User CurrentUser = null;
        public List<RequestValues> HeadersValues;
        public List<RequestValues> FormValues;
        private TcpClient TcpClient;

        private event Action<SslStream, RequestContext> OnRead = RequestHandler.OnHandle;

        DatabaseWorker databaseWorker = new DatabaseWorker();

        public RequestContext(SslStream ClientStream, TcpClient Client)
        {

            this.TcpClient = Client;
            try
            {
                ClientStream.BeginRead(buffer, 0, buffer.Length, ClientRead, ClientStream);
            }
            catch { return; }
        }
        private void ClientRead(IAsyncResult ar)
        {
            SslStream ClientStream = (SslStream)ar.AsyncState;

            if (ar.IsCompleted)
            {
                Message = Encoding.UTF8.GetString(buffer);
                Message = Uri.UnescapeDataString(Message);
                Console.WriteLine($"\n{DateTime.Now:g} Client IP:{TcpClient.Client.RemoteEndPoint}\n{Message}");
                RequestParse();
                HeadersValues = HeaderValues();
                FormValues = ContentValues();
                UserParse();
                ProfileParse();
                OnRead?.Invoke(ClientStream, this);
            }
        }

        private void RequestParse()
        {
            Match methodParse = Regex.Match(Message, @"(^\w+)\s+([^\s\?]+)[^\s]*\s+HTTP/.*|");
            RequestMethod = methodParse.Groups[1].Value.Trim();
            RequestUrl = methodParse.Groups[2].Value.Trim();
        }
        private void UserParse()
        {
            string cookie;
            try
            {
                if (HeadersValues.Any(x => x.Name.Contains("Cookie")))
                {
                    cookie = HeadersValues.FirstOrDefault(x => x.Name.Contains("Cookie")).Value;
                    try
                    {
                        CurrentUser = databaseWorker.CookieValidate(cookie);
                    }
                    catch { }
                }
            }
            catch { }

        }
        private List<RequestValues> HeaderValues()
        {
            var values = new List<RequestValues>();
            var parse = Regex.Matches(Message, @"(.*?): (.*?)\n");
            foreach (Match match in parse)
            {
                values.Add(new RequestValues()
                {
                    Name = match.Groups[1].Value.Trim(),
                    Value = match.Groups[2].Value.Trim()
                });
            }
            return values;
        }

        private void ProfileParse()
        {
            if (RequestUrl.Contains("@"))
            {
                RequestProfile = databaseWorker.FindUser(RequestUrl.Substring(2));
                RequestUrl = "/profile";
            }
        }
        private List<RequestValues> ContentValues()
        {
            var values = new List<RequestValues>();
            var output = Message.Trim('\n').Split().Last();
            var parse = Regex.Matches(output, @"([^&].*?)=([^&]*\b)");
            foreach (Match match in parse)
            {
                values.Add(new RequestValues()
                {
                    Name = match.Groups[1].Value.Trim(),
                    Value = match.Groups[2].Value.Trim().Replace('+', ' ')
                });
            }
            return values;
        }
    }
}

using ClearServer.Core.UserController;
using System.Net.Security;
namespace ClearServer.Core.Requester
{
    public class RequestHandler
    {
        public static void OnHandle(SslStream ClientStream, RequestContext context)
        {

            if (context.CurrentUser != null)
            {
                new AuthUserController(ClientStream, context);
            }
            else 
            {
                new NonAuthUserController(ClientStream, context);
            };
        }
    }
}

using ClearServer.Core.Cookies;
using ClearServer.Core.Requester;
using ClearServer.Core.Security;
using System;
using System.Linq;
using System.Net.Security;
using System.Text;

namespace ClearServer.Core.UserController
{
    internal class AuthorizationController
    {
        private SslStream ClientStream;
        private RequestContext Context;
        private UserCookies cookies;
        private WriteController WriteController;
        DatabaseWorker DatabaseWorker;
        RazorController RazorController;
        PasswordHasher PasswordHasher;
        public AuthorizationController(SslStream clientStream, RequestContext context)
        {
            ClientStream = clientStream;
            Context = context;
            DatabaseWorker = new DatabaseWorker();
            WriteController = new WriteController(ClientStream);
            RazorController = new RazorController(context, clientStream);
            PasswordHasher = new PasswordHasher();
        }

        internal void MethodRecognizer()
        {
            if (Context.FormValues.Count == 2 && Context.FormValues.Any(x => x.Name == "password")) Authorize();
            else if (Context.FormValues.Count == 3 && Context.FormValues.Any(x => x.Name == "regPass")) Registration();
            else
            {
                RazorController.ErrorLoader(401);
            }
        }

        private void Authorize()
        {
            var values = Context.FormValues;
            var user = new User()
            {
                login = values[0].Value,
                password = PasswordHasher.PasswordHash(values[1].Value)
            };
            user = DatabaseWorker.UserAuth(user);
            if (user != null)
            {
                cookies = new UserCookies(user.login, user.password);
                user.cookie = cookies.AuthCookie;
                DatabaseWorker.UserUpdate(user);
                var response = Encoding.UTF8.GetBytes($"HTTP/1.1 301 Moved Permanently\nLocation: /@{user.login}\nSet-Cookie: {cookies.AuthCookie}; Expires={DateTime.Now.AddDays(2):R}; Secure; HttpOnly\n\n");
                ClientStream.BeginWrite(response, 0, response.Length, WriteController.OnClientSend, null);


            }
            else
            {
                RazorController.ErrorLoader(401);

            }
        }

        private void Registration()
        {
            var values = Context.FormValues;
            var user = new User()
            {
                name = values[0].Value,
                login = values[1].Value,
                password = PasswordHasher.PasswordHash(values[2].Value),
            };
            cookies = new UserCookies(user.login, user.password);
            user.cookie = cookies.AuthCookie;
            if (DatabaseWorker.LoginValidate(user.login))
            {
                Console.WriteLine("User ready");
                Console.WriteLine($"{user.password} {user.password.Trim().Length}");
                DatabaseWorker.UserRegister(user);
                var response = Encoding.UTF8.GetBytes($"HTTP/1.1 301 Moved Permanently\nLocation: /@{user.login}\nSet-Cookie: {user.cookie}; Expires={DateTime.Now.AddDays(2):R}; Secure; HttpOnly\n\n");
                ClientStream.BeginWrite(response, 0, response.Length, WriteController.OnClientSend, null);
            }
            else
            {
                RazorController.ErrorLoader(401);
            }
        }
    }
}

using ClearServer.Core.UserController;
using System;
using System.Data.Linq;
using System.Linq;

namespace ClearServer
{
    class DatabaseWorker
    {

        private readonly Table<User> users = null;
        private readonly DataContext DataBase = null;
        private const string connectionStr = @"";

        public DatabaseWorker()
        {
            DataBase = new DataContext(connectionStr);
            users = DataBase.GetTable<User>();
        }

        public User UserAuth(User User)
        {
            try
            {
                var user = users.SingleOrDefault(t => t.login.ToLower() == User.login.ToLower() && t.password == User.password);
                if (user != null)
                    return user;
                else
                    return null;
            }
            catch (Exception)
            {
                return null;
            }

        }

        public void UserRegister(User user)
        {
            try
            {
                users.InsertOnSubmit(user);
                DataBase.SubmitChanges();
                Console.WriteLine($"User{user.name} with id {user.uid} added");
                foreach (var item in users)
                {
                    Console.WriteLine(item.login + "\n");
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }
            
        }

        public bool LoginValidate(string login)
        {
            if (users.Any(x => x.login.ToLower() == login.ToLower()))
            {
                Console.WriteLine("Login already exists");
                return false;
            }
            return true;
        }
        public void UserUpdate(User user)
        {
            var UserToUpdate = users.FirstOrDefault(x => x.uid == user.uid);
            UserToUpdate = user;
            DataBase.SubmitChanges();
            Console.WriteLine($"User {UserToUpdate.name} with id {UserToUpdate.uid} updated");
            foreach (var item in users)
            {
                Console.WriteLine(item.login + "\n");
            }
        }
        public User CookieValidate(string CookieInput)
        {
            User user = null;
            try
            {
                user = users.SingleOrDefault(x => x.cookie == CookieInput);
            }
            catch
            {
                return null;
            }
            if (user != null) return user;
            else return null;
        }
        public User FindUser(string login)
        {
            User user = null;
            try
            {
                user = users.Single(x => x.login.ToLower() == login.ToLower());
                if (user != null)
                {
                    return user;
                }
                else
                {
                    return null;
                }
            }
            catch (Exception)
            {
                return null;
            }
        }
    }
}

 private static async void HandleWebsocket(HttpListenerContext context)
        {
            var socketContext = await context.AcceptWebSocketAsync(null);
            var socket = socketContext.WebSocket;
            Locker.EnterWriteLock();
            try
            {
                Clients.Add(socket);
            }
            finally
            {
                Locker.ExitWriteLock();
            }

            while (true)
            {
                var buffer = new ArraySegment<byte>(new byte[1024]);
                var result = await socket.ReceiveAsync(buffer, CancellationToken.None);
                var str = Encoding.Default.GetString(buffer);
                Console.WriteLine(str);

                for (int i = 0; i < Clients.Count; i++)
                {
                    WebSocket client = Clients[i];

                    try
                    {
                        if (client.State == WebSocketState.Open)
                        {
                            
                            await client.SendAsync(buffer, WebSocketMessageType.Text, true, CancellationToken.None);
                        }
                    }
                    catch (ObjectDisposedException)
                    {
                        Locker.EnterWriteLock();
                        try
                        {
                            Clients.Remove(client);
                            i--;
                        }
                        finally
                        {
                            Locker.ExitWriteLock();
                        }
                    }
                }
            }
        }