update
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@@ -1,36 +1,106 @@
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using System;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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class Client
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{
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private static TcpClient client;
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private static NetworkStream stream;
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private static string currentGroup = "all";
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static void Main()
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{
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TcpClient client = new TcpClient();
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Console.Write("Введите ваше имя: ");
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string name = Console.ReadLine();
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string serverIp = "127.0.0.1";
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int port = 8888;
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try
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{
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client.Connect("127.0.0.1", 8888);
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NetworkStream stream = client.GetStream();
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client = new TcpClient();
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client.Connect(serverIp, port);
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stream = client.GetStream();
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Console.Write("Текст: ");
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string text = Console.ReadLine();
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// Отправляем имя
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byte[] nameData = Encoding.UTF8.GetBytes(name);
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stream.Write(nameData, 0, nameData.Length);
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byte[] data = Encoding.UTF8.GetBytes(text);
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stream.Write(data, 0, data.Length);
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Console.WriteLine($"Добро пожаловать, {name}!");
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data = new byte[1024];
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int bytes = stream.Read(data, 0, data.Length);
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string response = Encoding.UTF8.GetString(data, 0, bytes);
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// Поток для приема сообщений
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Thread receiveThread = new Thread(ReceiveMessages);
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receiveThread.Start();
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Console.WriteLine($"Ответ: {response}");
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// Циклическая отправка сообщений
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while (true)
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{
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Console.Write($"[Группа: {currentGroup}] Введите сообщение: ");
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string text = Console.ReadLine();
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stream.Close();
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client.Close();
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if (text.ToLower() == "exit")
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break;
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else if (text.StartsWith("/join "))
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{
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currentGroup = text.Substring(6);
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string command = $"/group {currentGroup}";
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byte[] data = Encoding.UTF8.GetBytes(command);
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stream.Write(data, 0, data.Length);
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}
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else if (text.StartsWith("/groups"))
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{
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// Запрос списка групп и клиентов
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byte[] data = Encoding.UTF8.GetBytes("/list");
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stream.Write(data, 0, data.Length);
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}
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else
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{
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string message = $"/msg {currentGroup} {text}";
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byte[] data = Encoding.UTF8.GetBytes(message);
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stream.Write(data, 0, data.Length);
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}
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}
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}
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catch (Exception e)
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{
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Console.WriteLine($"Ошибка: {e.Message}");
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}
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finally
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{
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stream?.Close();
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client?.Close();
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}
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}
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private static void ReceiveMessages()
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{
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byte[] buffer = new byte[4096];
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try
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{
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while (true)
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{
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int bytes = stream.Read(buffer, 0, buffer.Length);
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if (bytes == 0) break;
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string response = Encoding.UTF8.GetString(buffer, 0, bytes);
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if (response.StartsWith("/clients "))
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{
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Console.WriteLine($"\n=== Список клиентов и групп ===");
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Console.WriteLine(response.Substring(9));
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Console.WriteLine("================================");
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}
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else
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{
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Console.WriteLine($"\n[Сообщение]: {response}");
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}
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Console.Write($"[Группа: {currentGroup}] Введите сообщение: ");
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}
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}
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catch
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{
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Console.WriteLine("\nСоединение с сервером потеряно");
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}
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}
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}
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@@ -1,35 +1,31 @@
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using System.Net;
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using System;
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using System.Collections.Generic;
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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.Threading;
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class Server
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{
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private static Dictionary<TcpClient, string> clients = new Dictionary<TcpClient, string>();
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private static Dictionary<string, List<string>> groups = new Dictionary<string, List<string>>();
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private static readonly object lockObj = new object();
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static void Main()
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{
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TcpListener server = new TcpListener(IPAddress.Any, 8888);
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int port = 8888;
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TcpListener server = new TcpListener(IPAddress.Any, port);
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try
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{
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server.Start();
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Console.WriteLine("Сервер запущен");
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Console.WriteLine($"Сервер запущен на порту {port}");
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while (true)
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{
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TcpClient client = server.AcceptTcpClient();
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NetworkStream stream = client.GetStream();
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byte[] buffer = new byte[1024];
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int bytes = stream.Read(buffer, 0, buffer.Length);
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string text = Encoding.UTF8.GetString(buffer, 0, bytes);
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Console.WriteLine($"Получено: {text}");
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string response = $"OK: {StrProc(text)}";
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byte[] data = Encoding.UTF8.GetBytes(response);
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stream.Write(data, 0, data.Length);
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stream.Close();
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client.Close();
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Thread clientThread = new Thread(HandleClient);
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clientThread.Start(client);
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}
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}
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catch (Exception e)
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@@ -42,7 +38,134 @@ class Server
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}
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}
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//18 вариант
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private static void HandleClient(object obj)
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{
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TcpClient client = (TcpClient)obj;
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NetworkStream stream = client.GetStream();
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byte[] buffer = new byte[1024];
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try
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{
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// Получаем имя клиента
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int bytes = stream.Read(buffer, 0, buffer.Length);
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string clientName = Encoding.UTF8.GetString(buffer, 0, bytes);
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lock (lockObj)
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{
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clients[client] = clientName;
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if (!groups.ContainsKey("all"))
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groups["all"] = new List<string>();
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groups["all"].Add(clientName);
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}
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Console.WriteLine($"Клиент {clientName} подключился");
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// Отправляем список клиентов
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SendClientList(stream);
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// Основной цикл приема сообщений
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while (true)
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{
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bytes = stream.Read(buffer, 0, buffer.Length);
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if (bytes == 0) break;
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string message = Encoding.UTF8.GetString(buffer, 0, bytes);
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Console.WriteLine($"Получено от {clientName}: {message}");
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// Обработка команд
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if (message.StartsWith("/group "))
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{
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string groupName = message.Substring(7);
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HandleGroupCommand(clientName, groupName);
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SendClientList(stream);
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}
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else if (message.StartsWith("/msg "))
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{
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string[] parts = message.Substring(5).Split(' ', 2);
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if (parts.Length == 2)
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{
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string targetGroup = parts[0];
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string msgText = parts[1];
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string processed = StrProc(msgText);
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SendToGroup(targetGroup, $"{clientName}: {processed}");
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}
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}
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}
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}
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catch
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{
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// Клиент отключился
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}
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finally
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{
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lock (lockObj)
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{
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string name = clients[client];
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Console.WriteLine($"Клиент {name} отключился");
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// Удаляем из всех групп
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foreach (var group in groups.Values)
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{
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group.Remove(name);
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}
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clients.Remove(client);
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}
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client.Close();
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}
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}
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private static void HandleGroupCommand(string clientName, string groupName)
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{
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lock (lockObj)
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{
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if (!groups.ContainsKey(groupName))
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groups[groupName] = new List<string>();
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if (!groups[groupName].Contains(clientName))
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groups[groupName].Add(clientName);
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Console.WriteLine($"{clientName} присоединился к группе {groupName}");
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}
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}
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private static void SendClientList(NetworkStream stream)
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{
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lock (lockObj)
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{
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string list = "/clients ";
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foreach (var group in groups)
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{
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list += $"[{group.Key}: {string.Join(", ", group.Value)}] ";
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}
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byte[] data = Encoding.UTF8.GetBytes(list);
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stream.Write(data, 0, data.Length);
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}
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}
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private static void SendToGroup(string groupName, string message)
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{
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lock (lockObj)
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{
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if (!groups.ContainsKey(groupName)) return;
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byte[] data = Encoding.UTF8.GetBytes(message);
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foreach (var client in clients)
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{
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if (groups[groupName].Contains(client.Value))
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{
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try
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{
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NetworkStream stream = client.Key.GetStream();
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stream.Write(data, 0, data.Length);
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}
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catch { }
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}
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}
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}
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}
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// Вариант 18: замена 'y' на 'o'
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private static string StrProc(string str)
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{
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return str.Replace('y', 'o');
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