windows的一個socket 客戶端程序

windows的一個socket 客戶端程序

#include <iostream>
#include <WinSock2.h>
#include <WS2tcpip.h>
#include <chrono>
#include <thread>

// 鏈接庫
#pragma comment(lib, "Ws2_32.lib")

int main() {
    // 初始化 Winsock
    WSADATA wsaData;
    if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
        std::cerr << "Failed to initialize Winsock\n";
        return 1;
    }

    // 創建套接字
    SOCKET client_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (client_socket == INVALID_SOCKET) {
        std::cerr << "Failed to create socket\n";
        WSACleanup();
        return 1;
    }

    // 設置服務器地址
    sockaddr_in server_addr;
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(9000);
    inet_pton(AF_INET, "192.168.21.49", &server_addr.sin_addr);


    // 連接到服務器
    if (connect(client_socket, reinterpret_cast<SOCKADDR*>(&server_addr), sizeof(server_addr)) == SOCKET_ERROR) {
        std::cerr << "Failed to connect to server\n";
        closesocket(client_socket);
        WSACleanup();
        return 1;
    }

    // 每隔1秒發送一次消息
    while (true) {

        //const char* message = "hello world";
        //if (send(client_socket, message, strlen(message), 0) == SOCKET_ERROR) {
        //    std::cerr << "Failed to send message\n";
        //    closesocket(client_socket);
        //    WSACleanup();
        //    return 1;
        //}
        //std::cout << "Message sent: " << message << std::endl;
        //std::this_thread::sleep_for(std::chrono::seconds(3)); // 等待 N 秒



        // 每隔 n 秒發送一次數據
        std::string binaryData = "\x5F\x0F"; // 二進制數據流 "0101 1111 0000 1111"
        // 發送數據
        int bytesSent = send(client_socket, binaryData.c_str(), binaryData.length(), 0);
        if (bytesSent == SOCKET_ERROR) {
            std::cerr << "Failed to send data: " << WSAGetLastError() << std::endl;
            closesocket(client_socket);
            WSACleanup();
            return 1;
        }

        std::cout << "Sent " << bytesSent << " bytes of data." << std::endl;

        // 等待1秒
        std::this_thread::sleep_for(std::chrono::seconds(1));

    }

    // 關閉套接字
    closesocket(client_socket);
    WSACleanup();
    return 0;
}