/// <summary>
/// Searches for Internet Gateways in the network.
/// </summary>
public void SearchGateways()
{
try
{
this.searchTimer?.Dispose();
this.searchTimer = null;
if (this.upnpClient is null)
{
this.upnpClient = new UPnPClient(this.sniffers);
this.upnpClient.OnDeviceFound += this.UpnpClient_OnDeviceFound;
}
lock (this.ipAddressesFound)
{
this.ipAddressesFound.Clear();
}
this.State = PeerToPeerNetworkState.SearchingForGateway;
this.upnpClient.StartSearch("urn:schemas-upnp-org:service:WANIPConnection:1", 1);
this.upnpClient.StartSearch("urn:schemas-upnp-org:service:WANIPConnection:2", 1);
this.searchTimer = new Timer(this.SearchTimeout, null, 10000, Timeout.Infinite);
}
catch (Exception ex)
{
this.exception = ex;
this.State = PeerToPeerNetworkState.Error;
}
}
/// <summary>
/// Searches for Internet Gateways in the network.
/// </summary>
public void SearchGateways()
{
try
{
if (this.upnpClient == null)
{
this.upnpClient = new UPnPClient(this.sniffers);
this.upnpClient.OnDeviceFound += new UPnPDeviceLocationEventHandler(UpnpClient_OnDeviceFound);
}
lock (this.ipAddressesFound)
{
this.ipAddressesFound.Clear();
}
this.State = PeerToPeerNetworkState.SearchingForGateway;
this.upnpClient.StartSearch("urn:schemas-upnp-org:service:WANIPConnection:1", 1);
this.upnpClient.StartSearch("urn:schemas-upnp-org:service:WANIPConnection:2", 1);
}
catch (Exception ex)
{
this.exception = ex;
this.State = PeerToPeerNetworkState.Error;
}
}
/// <summary>
/// <see cref="IDisposable.Dispose"/>
/// </summary>
public void Dispose()
{
this.disposed = true;
this.State = PeerToPeerNetworkState.Closed;
NetworkChange.NetworkAddressChanged -= NetworkChange_NetworkAddressChanged;
this.searchTimer?.Dispose();
this.searchTimer = null;
this.tcpListener?.Stop();
this.tcpListener = null;
if (this.tcpMappingAdded)
{
this.tcpMappingAdded = false;
try
{
this.serviceWANIPConnectionV1.DeletePortMapping(string.Empty, (ushort)this.localEndpoint.Port, "TCP");
}
catch (Exception)
{
// Ignore
}
}
if (this.udpMappingAdded)
{
this.udpMappingAdded = false;
try
{
this.serviceWANIPConnectionV1.DeletePortMapping(string.Empty, (ushort)this.localEndpoint.Port, "UDP");
}
catch (Exception)
{
// Ignore
}
}
this.serviceWANIPConnectionV1 = null;
this.upnpClient?.Dispose();
this.upnpClient = null;
this.ipAddressesFound?.Clear();
this.ipAddressesFound = null;
this.ready?.Dispose();
this.ready = null;
this.error?.Dispose();
this.error = null;
}
private void StartSearch()
{
try
{
this.upnpClient = new UPnPClient();
this.upnpClient.OnDeviceFound += new UPnPDeviceLocationEventHandler(UpnpClient_OnDeviceFound);
this.State = PeerToPeerNetworkState.SearchingForGateway;
this.upnpClient.StartSearch("urn:schemas-upnp-org:service:WANIPConnection:1", 1);
this.upnpClient.StartSearch("urn:schemas-upnp-org:service:WANIPConnection:2", 1);
}
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;
}
}
/// <summary>
/// <see cref="IDisposable.Dispose"/>
/// </summary>
public virtual void Dispose()
{
this.disposed = true;
this.State = PeerToPeerNetworkState.Closed;
NetworkChange.NetworkAddressChanged -= NetworkChange_NetworkAddressChanged;
this.searchTimer?.Dispose();
this.searchTimer = null;
foreach (InternetGatewayRegistration Registration in this.ports)
{
if (Registration.TcpRegistered)
{
Registration.TcpRegistered = false;
try
{
Log.Notice("Deleting Internet Gateway port mapping.",
new KeyValuePair <string, object>("Host", string.Empty),
new KeyValuePair <string, object>("External Port", Registration.ExternalPort),
new KeyValuePair <string, object>("Protocol", "TCP"),
new KeyValuePair <string, object>("Local Port", Registration.LocalPort),
new KeyValuePair <string, object>("Application", Registration.ApplicationName));
this.serviceWANIPConnectionV1.DeletePortMapping(string.Empty, Registration.LocalPort, "TCP");
}
catch (Exception)
{
// Ignore
}
}
if (Registration.UdpRegistered)
{
Registration.UdpRegistered = false;
try
{
Log.Notice("Deleting Internet Gateway port mapping.",
new KeyValuePair <string, object>("Host", string.Empty),
new KeyValuePair <string, object>("External Port", Registration.ExternalPort),
new KeyValuePair <string, object>("Protocol", "UDP"),
new KeyValuePair <string, object>("Local Port", Registration.LocalPort),
new KeyValuePair <string, object>("Application", Registration.ApplicationName));
this.serviceWANIPConnectionV1.DeletePortMapping(string.Empty, Registration.LocalPort, "UDP");
}
catch (Exception)
{
// Ignore
}
}
}
this.serviceWANIPConnectionV1 = null;
this.upnpClient?.Dispose();
this.upnpClient = null;
this.ipAddressesFound?.Clear();
this.ipAddressesFound = null;
this.ready?.Dispose();
this.ready = null;
this.error?.Dispose();
this.error = null;
}
/// <summary>
/// <see cref="IDisposable.Dispose"/>
/// </summary>
public void Dispose()
{
this.State = PeerToPeerNetworkState.Closed;
if (!(this.tcpListener is null))
{
this.tcpListener.Stop();
this.tcpListener = null;
}
if (this.tcpMappingAdded)
{
this.tcpMappingAdded = false;
try
{
this.serviceWANIPConnectionV1.DeletePortMapping(string.Empty, (ushort)this.localEndpoint.Port, "TCP");
}
catch (Exception)
{
// Ignore
}
}
if (this.udpMappingAdded)
{
this.udpMappingAdded = false;
try
{
this.serviceWANIPConnectionV1.DeletePortMapping(string.Empty, (ushort)this.localEndpoint.Port, "UDP");
}
catch (Exception)
{
// Ignore
}
}
this.serviceWANIPConnectionV1 = null;
if (!(this.upnpClient is null))
{
this.upnpClient.Dispose();
this.upnpClient = null;
}
if (!(this.ipAddressesFound is null))
{
this.ipAddressesFound.Clear();
this.ipAddressesFound = null;
}
if (!(this.ready is null))
{
this.ready.Close();
this.ready = null;
}
if (!(this.error is null))
{
this.error.Close();
this.error = null;
}
}
