c++ socket 重连

以下是C++ socket重连的示例代码：

#include "stdafx.h"
#include <iostream>
#include <string>
#include <Windows.h>
#include <Winsock2.h>
#include <fstream>
#pragma comment(lib,"Ws2_32.lib")

using namespace std;

int main()
{
    WSADATA wsaData;
    SOCKET clientSocket;
    SOCKADDR_IN serverAddr;
    char recvBuf[500];
    int byteRecv;
    int connectState;

    // 初始化Winsock
    if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
        cout << "WSAStartup failed!" << endl;
        return 1;
    }

    // 创建socket
    clientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (clientSocket == INVALID_SOCKET) {
        cout << "Create socket failed!" << endl;
        WSACleanup();
        return 1;
    }

    // 设置服务器地址
    serverAddr.sin_family = AF_INET;
    serverAddr.sin_port = htons(1234);
    serverAddr.sin_addr.s_addr = inet_addr("127.0.0.1");

    // 连接服务器
    connectState = connect(clientSocket, (SOCKADDR*)&serverAddr, sizeof(serverAddr));
    if (connectState == SOCKET_ERROR) {
        cout << "Connect failed with error code: " << GetLastError() << endl;
        WSACleanup();
        return 1;
    }
    else {
        cout << "Connect successfully!" << endl;
    }

    // 接收消息
    byteRecv = recv(clientSocket, recvBuf, 500, 0);
    recvBuf[byteRecv] = 0;
    cout << recvBuf << endl;

    // 关闭socket
    closesocket(clientSocket);

    // 重新连接
    clientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (clientSocket == INVALID_SOCKET) {
        cout << "Create socket failed!" << endl;
        WSACleanup();
        return 1;
    }

    connectState = connect(clientSocket, (SOCKADDR*)&serverAddr, sizeof(serverAddr));
    if (connectState == SOCKET_ERROR) {
        cout << "Reconnect failed with error code: " << GetLastError() << endl;
        WSACleanup();
        return 1;
    }
    else {
        cout << "Reconnect successfully!" << endl;
    }

    // 接收消息
    byteRecv = recv(clientSocket, recvBuf, 500, 0);
    recvBuf[byteRecv] = 0;
    cout << recvBuf << endl;

    // 关闭socket
    closesocket(clientSocket);

    // 清理Winsock
    WSACleanup();

    return 0;
}