解除tcpip端口被占用 c++

以下是解除TCP/IP端口被占用的C++代码示例：

#include <winsock2.h>
#include <iostream>

using namespace std;

int main()
{
    WSADATA wsaData;
    int iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
    if (iResult != 0) {
        cout << "WSAStartup failed: " << iResult << endl;
        return 1;
    }

    SOCKET sock = socket(AF_INET, SOCK_STREAM, 0);
    if (sock == INVALID_SOCKET) {
        cout << "Socket 创建失败，Exit!" << endl;
        WSACleanup();
        return 1;
    }

    sockaddr_in addr;
    addr.sin_family = AF_INET;
    addr.sin_port = htons(8080); // 要解除占用的端口号
    addr.sin_addr.s_addr = htonl(INADDR_ANY);

    // 绑定端口
    iResult = bind(sock, (SOCKADDR*)&addr, sizeof(addr));
    if (iResult == SOCKET_ERROR) {
        cout << "端口已被占用" << endl;

        // 解除端口占用
        int optval = 1;
        setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (const char*)&optval, sizeof(optval));

        // 再次绑定端口
        iResult = bind(sock, (SOCKADDR*)&addr, sizeof(addr));
        if (iResult == SOCKET_ERROR) {
            cout << "端口绑定失败" << endl;
            closesocket(sock);
            WSACleanup();
            return 1;
        }
    }

    cout << "端口绑定成功" << endl;

    closesocket(sock);
    WSACleanup();
    return 0;
}