private async void UpnpClient_OnDeviceFound(object Sender, DeviceLocationEventArgs e)
{
try
{
lock (this.ipAddressesFound)
{
if (this.ipAddressesFound.ContainsKey(e.RemoteEndPoint.Address))
{
return;
}
this.ipAddressesFound[e.RemoteEndPoint.Address] = true;
}
DeviceDescriptionDocument Doc = await e.Location.GetDeviceAsync();
if (Doc != null)
{
UPnPService Service = Doc.GetService("urn:schemas-upnp-org:service:WANIPConnection:1");
if (Service == null)
{
Service = Doc.GetService("urn:schemas-upnp-org:service:WANIPConnection:2");
if (Service == null)
{
return;
}
}
ServiceDescriptionDocument Scpd = await Service.GetServiceAsync();
this.ServiceRetrieved(Scpd, e.LocalEndPoint);
}
}
catch (Exception ex)
{
this.exception = ex;
this.State = PeerToPeerNetworkState.Error;
}
}
private void UpnpClient_OnDeviceFound(UPnPClient Sender, DeviceLocationEventArgs e)
{
try
{
lock (this.ipAddressesFound)
{
if (this.ipAddressesFound.ContainsKey(e.RemoteEndPoint.Address))
{
return;
}
this.ipAddressesFound[e.RemoteEndPoint.Address] = true;
}
e.Location.StartGetDevice(this.DeviceRetrieved, e);
}
catch (Exception ex)
{
this.exception = ex;
this.State = PeerToPeerNetworkState.Error;
}
}
private void ServiceRetrieved(object Sender, ServiceDescriptionEventArgs e)
{
try
{
DeviceLocationEventArgs e2 = (DeviceLocationEventArgs)e.State;
Dictionary <ushort, bool> TcpPortMapped = new Dictionary <ushort, bool>();
Dictionary <ushort, bool> UdpPortMapped = new Dictionary <ushort, bool>();
ushort PortMappingIndex;
this.serviceWANIPConnectionV1 = new WANIPConnectionV1(e.ServiceDescriptionDocument);
this.State = PeerToPeerNetworkState.RegisteringApplicationInGateway;
this.serviceWANIPConnectionV1.GetExternalIPAddress(out string NewExternalIPAddress);
this.externalAddress = IPAddress.Parse(NewExternalIPAddress);
PortMappingIndex = 0;
try
{
while (true)
{
this.serviceWANIPConnectionV1.GetGenericPortMappingEntry(PortMappingIndex, out string NewRemoteHost,
out ushort NewExternalPort, out string NewProtocol, out ushort NewInternalPort, out string NewInternalClient,
out bool NewEnabled, out string NewPortMappingDescription, out uint NewLeaseDuration);
if (NewPortMappingDescription == this.applicationName && NewInternalClient == e2.LocalEndPoint.Address.ToString())
{
this.serviceWANIPConnectionV1.DeletePortMapping(NewRemoteHost, NewExternalPort, NewProtocol);
}
else
{
switch (NewProtocol)
{
case "TCP":
TcpPortMapped[NewExternalPort] = true;
break;
case "UDP":
UdpPortMapped[NewExternalPort] = true;
break;
}
PortMappingIndex++;
}
}
}
catch (UPnPException)
{
// No more entries.
}
this.localAddress = e2.LocalEndPoint.Address;
ushort LocalPort;
int i;
do
{
this.tcpListener = new TcpListener(this.localAddress, this.desiredPort);
this.tcpListener.Start(this.backlog);
i = ((IPEndPoint)this.tcpListener.LocalEndpoint).Port;
LocalPort = (ushort)(i);
if (i < 0 || i > ushort.MaxValue || TcpPortMapped.ContainsKey(LocalPort) || UdpPortMapped.ContainsKey(LocalPort))
{
this.tcpListener.Stop();
this.tcpListener = null;
if (this.desiredPort != 0)
{
throw new ArgumentException("Port already assigned to another application in the network.", "Port");
}
}
else
{
try
{
this.udpClient = new UdpClient(this.tcpListener.LocalEndpoint.AddressFamily);
this.udpClient.Client.Bind((IPEndPoint)this.tcpListener.LocalEndpoint);
}
catch (Exception)
{
this.tcpListener.Stop();
this.tcpListener = null;
}
}
}while (this.tcpListener is null);
this.localEndpoint = new IPEndPoint(this.localAddress, LocalPort);
this.serviceWANIPConnectionV1.AddPortMapping(string.Empty, LocalPort, "TCP", LocalPort, LocalAddress.ToString(), true, this.applicationName, 0);
this.tcpMappingAdded = true;
this.serviceWANIPConnectionV1.AddPortMapping(string.Empty, LocalPort, "UDP", LocalPort, LocalAddress.ToString(), true, this.applicationName, 0);
this.udpMappingAdded = true;
this.externalEndpoint = new IPEndPoint(this.externalAddress, LocalPort);
this.State = PeerToPeerNetworkState.Ready;
this.tcpListener.BeginAcceptTcpClient(this.EndAcceptTcpClient, null);
this.udpClient.BeginReceive(this.EndReceiveUdp, null);
}
catch (Exception ex)
{
this.exception = ex;
this.State = PeerToPeerNetworkState.Error;
}
}
