closesocket(m_Socket);

`closesocket(m_Socket)` 是一个函数调用，用于关闭一个套接字（socket）。它会终止与该套接字关联的任何网络通信，并释放相关资源。这个函数通常在不再需要使用套接字时调用，以确保资源的正确释放。

注意，`m_Socket` 是一个变量名，可能是在你的代码中定义的套接字变量。调用 `closesocket()` 函数将关闭这个套接字。

如果你有关于套接字编程方面的更多问题，请随时提问！

相关问题

修改代码输出时间的方式放止段吐核#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#include <unistd.h>#include <time.h> // 添加时间头文件int main() { int server_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); // 创建套接字 if (server_socket < 0) { perror("socket"); return 1; } struct sockaddr_in server_addr; server_addr.sin_family = AF_INET; server_addr.sin_addr.s_addr = htonl(INADDR_ANY); server_addr.sin_port = htons(8000); int iResult = bind(server_socket, (struct sockaddr*)&server_addr, sizeof(server_addr)); // 绑定套接字 if (iResult < 0) { perror("bind"); close(server_socket); return 1; } iResult = listen(server_socket, SOMAXCONN); // 监听套接字 if (iResult < 0) { perror("listen"); close(server_socket); return 1; } printf("服务器已启动，等待连接...\n"); int counter = 0; while (1) { struct sockaddr_in client_addr; socklen_t client_addr_len = sizeof(client_addr); int client_socket = accept(server_socket, (struct sockaddr*)&client_addr, &client_addr_len); // 接受客户端连接 if (client_socket < 0) { perror("accept"); close(server_socket); return 1; } counter++; printf("客户端 %s:%d 已连接，是今天的第 %d 个客户端。\n", inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port), counter); // 添加时间输出 time_t now = time(NULL); struct tm* time_info = localtime(&now); char time_str[20]; strftime(time_str, sizeof(time_str), "%Y-%m-%d %H:%M:%S", time_info); printf("当前时间是：%s\n", time_str); char reply[1024]; sprintf(reply, "你是今天第%d个客户端", counter); send(client_socket, reply, strlen(reply), 0); close(client_socket); } close(server_socket); return 0;}

代码已经添加了时间头文件，只需要在连接建立后输出时间即可。可以将时间获取和输出的代码放在连接建立后的代码块中。修改后的代码如下：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <time.h>

int main() {
    int server_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (server_socket < 0) {
        perror("socket");
        return 1;
    }

    struct sockaddr_in server_addr;
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
    server_addr.sin_port = htons(8000);

    int iResult = bind(server_socket, (struct sockaddr*)&server_addr, sizeof(server_addr));
    if (iResult < 0) {
        perror("bind"); 
        close(server_socket); 
        return 1;
    }

    iResult = listen(server_socket, SOMAXCONN);
    if (iResult < 0) {
        perror("listen"); 
        close(server_socket); 
        return 1;
    }

    printf("服务器已启动，等待连接...\n");
    int counter = 0;

    while (1) {
        struct sockaddr_in client_addr;
        socklen_t client_addr_len = sizeof(client_addr);
        int client_socket = accept(server_socket, (struct sockaddr*)&client_addr, &client_addr_len);
        if (client_socket < 0) {
            perror("accept"); 
            close(server_socket); 
            return 1;
        }

        counter++;
        printf("客户端 %s:%d 已连接，是今天的第 %d 个客户端。\n", 
            inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port), counter);

        // 输出时间
        time_t now = time(NULL);
        struct tm* time_info = localtime(&now);
        char time_str[20];
        strftime(time_str, sizeof(time_str), "%Y-%m-%d %H:%M:%S", time_info);
        printf("当前时间是：%s\n", time_str);

        char reply[1024];
        sprintf(reply, "你是今天第%d个客户端", counter);
        send(client_socket, reply, strlen(reply), 0);
        close(client_socket);
    }

    close(server_socket);
    return 0;
}

利用Socket实现CAsynsocket类

CAsynSocket是一个异步socket类，用于实现基于Windows平台下的网络编程。它能够同时处理多个连接请求，并且能够实现非阻塞的网络通信，提高了程序的效率。

下面是利用Socket实现CAsynSocket类的示例代码：

// CAsynSocket.h 文件

#ifndef _CASYN_SOCKET_H_
#define _CASYN_SOCKET_H_

#include <winsock2.h>
#include <string>

class CAsynSocket
{
public:
    CAsynSocket();
    virtual ~CAsynSocket();

    bool Create();
    bool Bind(const std::string& address, const int port);
    bool Listen(const int backlog = 5);
    bool Accept(CAsynSocket& clientSocket);
    bool Connect(const std::string& address, const int port);
    bool Send(const char* data, const int length);
    bool Receive(char* data, const int length);
    void Close();

private:
    SOCKET m_socket;
    bool m_isCreated;
};

#endif


// CAsynSocket.cpp 文件

#include "CAsynSocket.h"

CAsynSocket::CAsynSocket()
{
    m_socket = INVALID_SOCKET;
    m_isCreated = false;
}

CAsynSocket::~CAsynSocket()
{
    Close();
}

bool CAsynSocket::Create()
{
    m_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (m_socket == INVALID_SOCKET)
    {
        return false;
    }
    m_isCreated = true;
    return true;
}

bool CAsynSocket::Bind(const std::string& address, const int port)
{
    if (!m_isCreated)
    {
        return false;
    }

    sockaddr_in sockAddr;
    memset(&sockAddr, 0, sizeof(sockAddr));
    sockAddr.sin_family = AF_INET;
    sockAddr.sin_addr.s_addr = inet_addr(address.c_str());
    sockAddr.sin_port = htons(port);

    int result = bind(m_socket, (sockaddr*)&sockAddr, sizeof(sockAddr));
    if (result == SOCKET_ERROR)
    {
        return false;
    }
    return true;
}

bool CAsynSocket::Listen(const int backlog)
{
    if (!m_isCreated)
    {
        return false;
    }

    int result = listen(m_socket, backlog);
    if (result == SOCKET_ERROR)
    {
        return false;
    }
    return true;
}

bool CAsynSocket::Accept(CAsynSocket& clientSocket)
{
    if (!m_isCreated)
    {
        return false;
    }

    sockaddr_in clientAddr;
    int clientAddrSize = sizeof(clientAddr);
    SOCKET clientSocketHandle = accept(m_socket, (sockaddr*)&clientAddr, &clientAddrSize);
    if (clientSocketHandle == INVALID_SOCKET)
    {
        return false;
    }

    clientSocket.m_socket = clientSocketHandle;
    clientSocket.m_isCreated = true;

    return true;
}

bool CAsynSocket::Connect(const std::string& address, const int port)
{
    if (!m_isCreated)
    {
        return false;
    }

    sockaddr_in sockAddr;
    memset(&sockAddr, 0, sizeof(sockAddr));
    sockAddr.sin_family = AF_INET;
    sockAddr.sin_addr.s_addr = inet_addr(address.c_str());
    sockAddr.sin_port = htons(port);

    int result = connect(m_socket, (sockaddr*)&sockAddr, sizeof(sockAddr));
    if (result == SOCKET_ERROR)
    {
        return false;
    }
    return true;
}

bool CAsynSocket::Send(const char* data, const int length)
{
    if (!m_isCreated)
    {
        return false;
    }

    int result = send(m_socket, data, length, 0);
    if (result == SOCKET_ERROR)
    {
        return false;
    }
    return true;
}

bool CAsynSocket::Receive(char* data, const int length)
{
    if (!m_isCreated)
    {
        return false;
    }

    int result = recv(m_socket, data, length, 0);
    if (result == SOCKET_ERROR)
    {
        return false;
    }
    return true;
}

void CAsynSocket::Close()
{
    if (m_isCreated)
    {
        closesocket(m_socket);
        m_isCreated = false;
    }
}

以上代码实现了CAsynSocket类的基本功能，包括创建socket、绑定地址、监听端口、接受连接、连接远程主机、发送数据和接收数据等。可以根据需要进行扩展。