/// <summary>
/// is called before performing a registration.
/// </summary>
/// <param name="Registration">Registration to be performed.</param>
/// <param name="TcpPortMapped">What TCP Ports are already mapped.</param>
/// <param name="UdpPortMapped">What UDP Ports are already mapped.</param>
protected override void BeforeRegistration(InternetGatewayRegistration Registration,
Dictionary <ushort, bool> TcpPortMapped, Dictionary <ushort, bool> UdpPortMapped)
{
try
{
do
{
this.tcpListener = new TcpListener(this.localAddress, Registration.LocalPort);
this.tcpListener.Start(this.backlog);
int i = ((IPEndPoint)this.tcpListener.LocalEndpoint).Port;
if (i < 0 || i > ushort.MaxValue ||
TcpPortMapped.ContainsKey((ushort)i) ||
UdpPortMapped.ContainsKey((ushort)i))
{
this.tcpListener.Stop();
this.tcpListener = null;
}
else
{
try
{
this.udpClient = new UdpClient(this.tcpListener.LocalEndpoint.AddressFamily);
this.udpClient.Client.Bind((IPEndPoint)this.tcpListener.LocalEndpoint);
Registration.LocalPort = (ushort)i;
if (Registration.ExternalPort == 0 ||
TcpPortMapped.ContainsKey((ushort)Registration.ExternalPort) ||
UdpPortMapped.ContainsKey((ushort)Registration.ExternalPort))
{
Registration.ExternalPort = Registration.LocalPort;
}
}
catch (Exception)
{
this.tcpListener.Stop();
this.tcpListener = null;
}
}
}while (this.tcpListener is null);
this.localEndpoint = new IPEndPoint(this.localAddress, Registration.LocalPort);
this.externalEndpoint = new IPEndPoint(this.externalAddress, Registration.ExternalPort);
this.AcceptTcpClients();
this.BeginReceiveUdp();
}
catch (Exception ex)
{
this.exception = ex;
this.State = PeerToPeerNetworkState.Error;
}
}
/// <summary>
/// is called before performing a registration.
/// </summary>
/// <param name="Registration">Registration to be performed.</param>
/// <param name="TcpPortMapped">What TCP ports have already been mapped.</param>
/// <param name="UdpPortMapped">What UDP ports have already been mapped.</param>
protected virtual void BeforeRegistration(InternetGatewayRegistration Registration,
Dictionary <ushort, bool> TcpPortMapped, Dictionary <ushort, bool> UdpPortMapped)
{
// Do nothing by default.
}