socket is up

task_5/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.13)
+
+project(hello-world-cpp-logger)
+
+
+add_library(socket_up STATIC socket_up.cpp)
+add_library(socket_handler STATIC socket_handler.cpp)
+
+add_executable(main main.cpp)
+
+target_link_libraries(main socket_up socket_handler)

task_5/main.cpp

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+#include "socket_up.h"
+#include "socket_handler.h"
+#include <iostream>
+
+
+int main() {
+
+    SOCKET listenSocket = SocketUp::config_socket_windows();
+
+    // 6. Принятие входящего соединения
+    sockaddr_in clientAddr;
+    int clientAddrSize = sizeof(clientAddr);
+    SOCKET clientSocket = accept(listenSocket, (struct sockaddr*)&clientAddr, &clientAddrSize);
+    if (clientSocket == INVALID_SOCKET) {
+        std::cerr << "Accept failed with error: " << WSAGetLastError() << "\n";
+        closesocket(listenSocket);
+        WSACleanup();
+        return 1;
+    }
+    std::cout << "Client connected!\n";
+    
+
+    // 7. Отправка данных клиенту
+    const char* message = "new message from server!\n";
+    int bytesSent = send(clientSocket, message, strlen(message), 0);
+    if (bytesSent == SOCKET_ERROR) {
+        std::cerr << "Send failed with error: " << WSAGetLastError() << "\n";
+        closesocket(clientSocket);
+        closesocket(listenSocket);
+        WSACleanup();
+        return 1;
+    }
+    std::cout << "Message sent to client.\n";
+
+    return 0;
+}

task_5/readme.md

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+# Here need to use flag -lws2_32
+
+And I decide to make launch though ``make``

task_5/socket_up.cpp

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+#include "socket_up.h"
+
+
+
+// // Линковка библиотеки Winsock
+// #pragma comment(lib, "ws2_32.lib")
+// don't need but I think may shoot
+
+SOCKET SocketUp::config_socket_windows() {
+    // 1. Инициализация Winsock
+    WSADATA wsaData;
+    if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
+        std::cerr << "WSAStartup failed with error: " << WSAGetLastError() << "\n";
+        return 1;
+    }
+
+    // 2. Создание сокета
+    SOCKET listenSocket = socket(AF_INET, SOCK_STREAM, 0);
+    if (listenSocket == INVALID_SOCKET) {
+        std::cerr << "Socket creation failed with error: " << WSAGetLastError() << "\n";
+        WSACleanup();
+        return 1;
+    }
+
+    // 3. Настройка адреса сокета
+    sockaddr_in serverAddr;
+    memset(&serverAddr, 0, sizeof(serverAddr));
+    serverAddr.sin_family = AF_INET;
+    serverAddr.sin_port = htons(8080); // Порт для привязки
+    serverAddr.sin_addr.s_addr = INADDR_ANY; // Привязка к любому интерфейсу
+
+    // 4. Привязка сокета к адресу
+    if (bind(listenSocket, (struct sockaddr*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
+        std::cerr << "Bind failed with error: " << WSAGetLastError() << "\n";
+        closesocket(listenSocket);
+        WSACleanup();
+        return 1;
+    }
+
+    // 5. Перевод сокета в режим прослушивания
+    if (listen(listenSocket, SOMAXCONN) == SOCKET_ERROR) {
+        std::cerr << "Listen failed with error: " << WSAGetLastError() << "\n";
+        closesocket(listenSocket);
+        WSACleanup();
+        return 1;
+    }
+    std::cout << "Server is listening on port 8080...\n";
+
+
+    return listenSocket;
+
+    
+
+    // // 8. Закрытие клиентского сокета
+    // closesocket(clientSocket);
+
+    // // 9. Закрытие серверного сокета и завершение Winsock
+    // closesocket(listenSocket);
+    // WSACleanup();
+
+    // std::cout << "Server shut down.\n";
+    return 0;
+}

task_5/socket_up.h

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+#ifdef _WIN32
+    #include <windows.h>
+    #include <winsock2.h>
+    #include <ws2tcpip.h>
+    #include <cstring>
+#else
+    #include <sys/socket.h>
+#endif
+
+
+#include <iostream>
+
+
+class SocketUp {
+public:
+
+    #ifdef _WIN32
+        static SOCKET config_socket_windows();
+    #else
+        // SOCKET?
+        static SOCKET config_socket_unix();
+    #endif
+};
+