C语言完成适用于Windows系统的一对一的Socket客户端与服务器程序

好的，以下是一个基于C语言实现的适用于Windows系统的一对一Socket客户端与服务器程序：

服务器端代码：

#include <stdio.h>
#include <winsock2.h>

#pragma comment(lib, "ws2_32.lib")

#define PORT 8888

int main(int argc, char *argv[]) {
    WSADATA wsa;
    SOCKET server_socket, new_socket;
    struct sockaddr_in server, client;
    int client_len = sizeof(client);
    char buffer[1024] = {0};
    char *hello = "Hello from server";

    // 初始化Winsock
    if (WSAStartup(MAKEWORD(2, 2), &wsa) != 0) {
        printf("WSAStartup failed. Error Code : %d", WSAGetLastError());
        return 1;
    }

    // 创建socket
    if ((server_socket = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) {
        printf("Could not create socket : %d", WSAGetLastError());
    }

    // 设置服务器地址和端口号
    server.sin_family = AF_INET;
    server.sin_addr.s_addr = INADDR_ANY;
    server.sin_port = htons(PORT);

    // 绑定socket到指定端口
    if (bind(server_socket, (struct sockaddr *)&server, sizeof(server)) == SOCKET_ERROR) {
        printf("Bind failed with error code : %d", WSAGetLastError());
    }

    // 监听socket
    listen(server_socket, 3);

    // 接收客户端连接
    new_socket = accept(server_socket, (struct sockaddr *)&client, &client_len);
    if (new_socket == INVALID_SOCKET) {
        printf("Accept failed with error code : %d", WSAGetLastError());
    }

    // 从客户端接收消息
    recv(new_socket, buffer, 1024, 0);
    printf("Client: %s\n", buffer);

    // 向客户端发送消息
    send(new_socket, hello, strlen(hello), 0);
    printf("Hello message sent\n");

    // 关闭socket
    closesocket(new_socket);
    closesocket(server_socket);

    // 清理Winsock
    WSACleanup();

    return 0;
}

客户端代码：

#include <stdio.h>
#include <winsock2.h>

#pragma comment(lib, "ws2_32.lib")

#define PORT 8888

int main(int argc, char *argv[]) {
    WSADATA wsa;
    SOCKET client_socket;
    struct sockaddr_in server;
    char *hello = "Hello from client";
    char buffer[1024] = {0};

    // 初始化Winsock
    if (WSAStartup(MAKEWORD(2, 2), &wsa) != 0) {
        printf("WSAStartup failed. Error Code : %d", WSAGetLastError());
        return 1;
    }

    // 创建socket
    if ((client_socket = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) {
        printf("Could not create socket : %d", WSAGetLastError());
    }

    // 设置服务器地址和端口号
    server.sin_family = AF_INET;
    server.sin_addr.s_addr = inet_addr("127.0.0.1");
    server.sin_port = htons(PORT);

    // 连接服务器
    if (connect(client_socket, (struct sockaddr *)&server, sizeof(server)) < 0) {
        printf("Connect failed with error code : %d", WSAGetLastError());
        return 1;
    }

    // 向服务器发送消息
    send(client_socket, hello, strlen(hello), 0);
    printf("Hello message sent\n");

    // 从服务器接收消息
    recv(client_socket, buffer, 1024, 0);
    printf("Server: %s\n", buffer);

    // 关闭socket
    closesocket(client_socket);

    // 清理Winsock
    WSACleanup();

    return 0;
}

这个例子中，服务器端会绑定到本地8888端口，监听客户端的连接。客户端会连接到服务器，并向服务器发送一条消息，然后等待服务器的响应。

希望这个例子对您有所帮助！