Method Discover

daemon/UPnP.cpp:86–156

	}

	void UPnP::Discover ()
	{
		bool isError;
		int err;

#if ((MINIUPNPC_API_VERSION >= 8) || defined (UPNPDISCOVER_SUCCESS))
		err = UPNPDISCOVER_SUCCESS;

#if (MINIUPNPC_API_VERSION >= 14)
		m_Devlist = upnpDiscover (UPNP_RESPONSE_TIMEOUT, NULL, NULL, 0, 0, 2, &err);
#else
		m_Devlist = upnpDiscover (UPNP_RESPONSE_TIMEOUT, NULL, NULL, 0, 0, &err);
#endif

		isError = err != UPNPDISCOVER_SUCCESS;
#else // MINIUPNPC_API_VERSION >= 8
		err = 0;
		m_Devlist = upnpDiscover (UPNP_RESPONSE_TIMEOUT, NULL, NULL, 0);
		isError = m_Devlist == NULL;
#endif // MINIUPNPC_API_VERSION >= 8
		{
			// notify starting thread
			std::unique_lock<std::mutex> l(m_StartedMutex);
			m_Started.notify_all ();
		}

		if (isError)
		{
			LogPrint (eLogError, "UPnP: Unable to discover Internet Gateway Devices: error ", err);
			return;
		}

#if (MINIUPNPC_API_VERSION >= 18)
		err = UPNP_GetValidIGD (m_Devlist, &m_upnpUrls, &m_upnpData, m_NetworkAddr, sizeof (m_NetworkAddr),
					m_externalIPAddress, sizeof (m_externalIPAddress));
#else
		err = UPNP_GetValidIGD (m_Devlist, &m_upnpUrls, &m_upnpData, m_NetworkAddr, sizeof (m_NetworkAddr));
#endif
		m_upnpUrlsInitialized=err!=0;
		if (err == UPNP_IGD_VALID_CONNECTED)
		{
#if (MINIUPNPC_API_VERSION < 18)
			err = UPNP_GetExternalIPAddress (m_upnpUrls.controlURL, m_upnpData.first.servicetype, m_externalIPAddress);
			if(err != UPNPCOMMAND_SUCCESS)
			{
				LogPrint (eLogError, "UPnP: Unable to get external address: error ", err);
				return;
			}
			else
#endif
			{
				LogPrint (eLogError, "UPnP: Found Internet Gateway Device ", m_upnpUrls.controlURL);
				if (!m_externalIPAddress[0])
				{
					LogPrint (eLogError, "UPnP: Found Internet Gateway Device doesn't know our external address");
					return;
				}
			}