如何使用windows c++ api获取应用程序侦听端口

#include <iostream>
#include <winsock2.h>
#include <iphlpapi.h>
#include <ws2tcpip.h>

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

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

    // 获取TCP连接信息
    MIB_TCPTABLE* pTcpTable = nullptr;
    DWORD dwSize = 0;
    if (GetTcpTable(nullptr, &dwSize, true) == ERROR_INSUFFICIENT_BUFFER) {
        pTcpTable = (MIB_TCPTABLE*)malloc(dwSize);
        if (GetTcpTable(pTcpTable, &dwSize, true) != NO_ERROR) {
            std::cout << "Failed to get TCP table." << std::endl;
            free(pTcpTable);
            WSACleanup();
            return 1;
        }
    }

    // 遍历TCP连接
    for (DWORD i = 0; i < pTcpTable->dwNumEntries; i++) {
        MIB_TCPROW row = pTcpTable->table[i];
        if (row.dwState == MIB_TCP_STATE_LISTEN) {
            // 获取侦听端口
            USHORT port = ntohs(row.dwLocalPort);
            std::cout << "Listening port: " << port << std::endl;
        }
    }

    // 释放资源
    free(pTcpTable);
    WSACleanup();

    return 0;
}