/// <summary>
/// Adds or removes the port forwarding mapping from the Internet to the web server.
/// </summary>
/// <param name="setMappingPresent"></param>
/// <param name="overrideIsEnabled"></param>
/// <param name="overrideExternalPort"></param>
private void DoMapping(bool setMappingPresent, bool?overrideIsEnabled = null, int?overrideExternalPort = null)
{
if (!_Initialised)
{
throw new InvalidOperationException("You must initialise the UPnP manager before use");
}
var isMappingPresent = PortForwardingPresent;
var isEnabled = overrideIsEnabled ?? IsEnabled;
var externalPort = overrideExternalPort ?? _ExternalPort;
if (IsRouterPresent)
{
try {
isMappingPresent = DoesDirectMappingExist(externalPort);
if (isEnabled && isMappingPresent != setMappingPresent)
{
if (setMappingPresent)
{
Provider.AddMapping(externalPort, "TCP", WebServer.Port, WebServer.NetworkIPAddress, true, Description);
}
else
{
Provider.RemoveMapping(externalPort, "TCP");
}
isMappingPresent = setMappingPresent;
}
} catch (Exception ex) {
// Exceptions thrown by the COM stuff are discarded, see notes in Initialise
Debug.WriteLine(String.Format("UniversalPlugAndPlayManager.DoMapping caught exception {0}", ex.ToString()));
}
}
if (isMappingPresent != PortForwardingPresent)
{
PortForwardingPresent = setMappingPresent;
OnStateChanged(EventArgs.Empty);
}
}
