Lesson_05/client.cpp - master - AirLexa/06

Lesson_05/client.cpp
72 строки2 KB
AirLexa
Урок 5
21 июн 2026, 18:12
21 июн 2026, 18:12969158e
#include <iostream>
#include <string>
#include <winsock2.h>
#include <ws2tcpip.h>

#pragma comment(lib, "Ws2_32.lib")

int main() {
    WSADATA wsaData;
    int result = WSAStartup(MAKEWORD(2, 2), &wsaData);
    if (result != 0) {
        std::cerr << "WSAStartup failed with error: " << result << std::endl;
        return 1;
    }

    SOCKET connectSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (connectSocket == INVALID_SOCKET) {
        std::cerr << "Socket creation failed with error: " << WSAGetLastError() << std::endl;
        WSACleanup();
        return 1;
    }

    sockaddr_in clientService;
    clientService.sin_family = AF_INET;
    clientService.sin_port = htons(54000);

    if (inet_pton(AF_INET, "127.0.0.1", &clientService.sin_addr) <= 0) {
        std::cerr << "Invalid address/ Address not supported" << std::endl;
        closesocket(connectSocket);
        WSACleanup();
        return 1;
    }

    std::cout << "[Client] Connecting to server..." << std::endl;
    result = connect(connectSocket, (SOCKADDR*)&clientService, sizeof(clientService));
    if (result == SOCKET_ERROR) {
        std::cerr << "Connect failed with error: " << WSAGetLastError() << std::endl;
        closesocket(connectSocket);
        WSACleanup();
        return 1;
    }
    std::cout << "[Client] Connection successfully established." << std::endl;

    std::string message = "Hello from TCP client!";
    result = send(connectSocket, message.c_str(), static_cast<int>(message.length()), 0);
    if (result == SOCKET_ERROR) {
        std::cerr << "Send failed with error: " << WSAGetLastError() << std::endl;
        closesocket(connectSocket);
        WSACleanup();
        return 1;
    }
    std::cout << "[Client] Sent message: " << message << std::endl;

    char recvBuffer[512];
    int bytesReceived = recv(connectSocket, recvBuffer, sizeof(recvBuffer) - 1, 0);
    if (bytesReceived > 0) {
        recvBuffer[bytesReceived] = '\0';
        std::cout << "[Client] Received response: " << recvBuffer << std::endl;
    }
    else if (bytesReceived == 0) {
        std::cout << "[Client] Connection closed by server." << std::endl;
    }
    else {
        std::cerr << "Recv failed with error: " << WSAGetLastError() << std::endl;
    }

    closesocket(connectSocket);
    WSACleanup();

    system("pause");
    return 0;
}