netstat -ano -p tcp 枚举TCP链接

main

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <windows.h>
#include <Iphlpapi.h>
#include <tlhelp32.h>

#pragma comment(lib, "Iphlpapi.lib")
#pragma comment(lib, "WS2_32.lib")

int main()
{
	PMIB_TCPTABLE_OWNER_PID pTcpTable(NULL);
	DWORD dwSize = 0;
	GetExtendedTcpTable(pTcpTable, &dwSize, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0);
	pTcpTable = (MIB_TCPTABLE_OWNER_PID *)new char[dwSize];//重新分配缓冲区

	if (GetExtendedTcpTable(pTcpTable, &dwSize, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0) != NO_ERROR)
	{
		delete pTcpTable;
		return 0;
	}

	for (DWORD i = 0; i < pTcpTable->dwNumEntries; i++)
	{
		char szLocal[64] = { 0 };
		char szRemote[64] = { 0 };
		strcpy(szLocal, inet_ntoa(*(in_addr*)& pTcpTable->table[i].dwLocalAddr));
		strcpy(szRemote, inet_ntoa(*(in_addr*)& pTcpTable->table[i].dwRemoteAddr));

		printf("%d 本地地址：%s:%d  远程地址：%s:%d  状态：%d  进程ID:%d\r\n",
			i,
			szLocal, //本地IP 地址
			htons(pTcpTable->table[i].dwLocalPort), //本地端口
			szRemote, //远程IP地址
			htons(pTcpTable->table[i].dwRemotePort), //远程端口
			pTcpTable->table[i].dwState, //状态
			pTcpTable->table[i].dwOwningPid); //所属进程PID
	}
	delete pTcpTable;
	return 0;
}