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最新推荐文章于 2024-10-12 22:07:11 发布

原创最新推荐文章于 2024-10-12 22:07:11 发布 · 926 阅读

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文章标签：

#interface #socket #struct #list

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头文件：

typedef struct taghqNetAddrInfo
{
DWORD dwIndex;
DWORD dwAddr;
DWORD dwMask;
DWORD dwBCast;
DWORD dwCalcBCast;
}ThqNetAddrInfo;
int GetNetAddrInfoBySocket(SOCKET sock,std::vector<ThqNetAddrInfo>& vtInfo);

CPP：

int GetNetAddrInfoBySocket(SOCKET sock,std::vector<ThqNetAddrInfo>& vtInfo)
{
	INTERFACE_INFO InterfaceList[20];
	unsigned long nBytesReturned;
	if (WSAIoctl(sock, SIO_GET_INTERFACE_LIST, 0, 0, &InterfaceList,
			sizeof(InterfaceList), &nBytesReturned, 0, 0) == SOCKET_ERROR) {
		cerr << "Failed calling WSAIoctl: error " << WSAGetLastError() <<
				endl;
		return 1;
	}

	int nNumInterfaces = nBytesReturned / sizeof(INTERFACE_INFO);
	ThqNetAddrInfo dwInfo;
	for (int i = 0; i < nNumInterfaces; ++i) {
		dwInfo.dwIndex = i;
		dwInfo.dwAddr = InterfaceList[i].iiAddress.AddressIn.sin_addr.s_addr;
		dwInfo.dwMask = InterfaceList[i].iiNetmask.AddressIn.sin_addr.s_addr;
		dwInfo.dwBCast = InterfaceList[i].iiBroadcastAddress.AddressIn.sin_addr.s_addr;
		dwInfo.dwCalcBCast = dwInfo.dwAddr&dwInfo.dwMask|~dwInfo.dwMask;
		vtInfo.push_back(dwInfo);
	}
	return nNumInterfaces;
}