void _ssdp_MessageReceived(object sender, SsdpMessageEventArgs e)
{
var endpoint = e.EndPoint as IPEndPoint;
if (endpoint != null && e.LocalIp != null)
{
NatUtility.Handle(e.LocalIp, e.Message, endpoint, NatProtocol.Upnp);
}
}
void _ssdp_MessageReceived(object sender, SsdpMessageEventArgs e)
{
var endpoint = e.EndPoint as IPEndPoint;
if (endpoint == null || e.LocalEndPoint == null)
{
return;
}
string usn;
if (!e.Headers.TryGetValue("USN", out usn))
{
usn = string.Empty;
}
string nt;
if (!e.Headers.TryGetValue("NT", out nt))
{
nt = string.Empty;
}
// Filter device type
if (usn.IndexOf("WANIPConnection:", StringComparison.OrdinalIgnoreCase) == -1 &&
nt.IndexOf("WANIPConnection:", StringComparison.OrdinalIgnoreCase) == -1 &&
usn.IndexOf("WANPPPConnection:", StringComparison.OrdinalIgnoreCase) == -1 &&
nt.IndexOf("WANPPPConnection:", StringComparison.OrdinalIgnoreCase) == -1)
{
return;
}
var identifier = string.IsNullOrWhiteSpace(usn) ? nt : usn;
if (!_usnsHandled.Contains(identifier))
{
_usnsHandled.Add(identifier);
_logger.Debug("Calling Nat.Handle on " + identifier);
NatUtility.Handle(e.LocalEndPoint.Address, e.Message, endpoint, NatProtocol.Upnp);
}
}
private async void _deviceDiscovery_DeviceDiscovered(object sender, GenericEventArgs <UpnpDeviceInfo> e)
{
if (_disposed)
{
return;
}
var info = e.Argument;
string usn;
if (!info.Headers.TryGetValue("USN", out usn))
{
usn = string.Empty;
}
string nt;
if (!info.Headers.TryGetValue("NT", out nt))
{
nt = string.Empty;
}
// Filter device type
if (usn.IndexOf("WANIPConnection:", StringComparison.OrdinalIgnoreCase) == -1 &&
nt.IndexOf("WANIPConnection:", StringComparison.OrdinalIgnoreCase) == -1 &&
usn.IndexOf("WANPPPConnection:", StringComparison.OrdinalIgnoreCase) == -1 &&
nt.IndexOf("WANPPPConnection:", StringComparison.OrdinalIgnoreCase) == -1)
{
return;
}
var identifier = string.IsNullOrWhiteSpace(usn) ? nt : usn;
if (info.Location == null)
{
return;
}
lock (_usnsHandled)
{
if (_usnsHandled.Contains(identifier))
{
return;
}
_usnsHandled.Add(identifier);
}
_logger.Debug("Found NAT device: " + identifier);
IPAddress address;
if (IPAddress.TryParse(info.Location.Host, out address))
{
// The Handle method doesn't need the port
var endpoint = new IPEndPoint(address, info.Location.Port);
IPAddress localAddress = null;
try
{
var localAddressString = await _appHost.GetLocalApiUrl().ConfigureAwait(false);
Uri uri;
if (Uri.TryCreate(localAddressString, UriKind.Absolute, out uri))
{
localAddressString = uri.Host;
if (!IPAddress.TryParse(localAddressString, out localAddress))
{
return;
}
}
}
catch (Exception ex)
{
return;
}
if (_disposed)
{
return;
}
_logger.Debug("Calling Nat.Handle on " + identifier);
NatUtility.Handle(localAddress, info, endpoint, NatProtocol.Upnp);
}
}