/// <summary>
/// Registers a new protocol with the dispatcher.
/// </summary>
/// <param name="reg"></param>
/// <param name="impl"></param>
private void RegisterProtocol(PUPProtocolEntry entry)
{
if (_dispatchMap.ContainsKey(entry.Socket))
{
throw new InvalidOperationException(
String.Format("Socket {0} has already been registered for protocol {1}", entry.Socket, _dispatchMap[entry.Socket].FriendlyName));
}
_dispatchMap[entry.Socket] = entry;
}
public void ReceivePUP(PUP pup)
{
//
// Filter out packets not destined for us.
// Even though we use pcap in non-promiscuous mode, if
// something else has set the interface to promiscuous mode, that
// setting may be overridden.
//
if (pup.DestinationPort.Host != 0 && // Not broadcast.
pup.DestinationPort.Host != DirectoryServices.Instance.LocalHost) // Not our address.
{
// Do nothing with this PUP.
Log.Write(LogType.Verbose, LogComponent.PUP, "PUP is neither broadcast nor for us. Discarding.");
return;
}
//
// Forward PUP on to registered endpoints.
//
if (_dispatchMap.ContainsKey(pup.DestinationPort.Socket))
{
PUPProtocolEntry entry = _dispatchMap[pup.DestinationPort.Socket];
if (entry.ConnectionType == ConnectionType.Connectionless)
{
Log.Write(LogType.Verbose, LogComponent.PUP, "Dispatching PUP (source {0}, dest {1}) to {2} handler.", pup.SourcePort, pup.DestinationPort, entry.FriendlyName);
// Connectionless; just pass the PUP directly to the protocol
entry.ProtocolImplementation.RecvData(pup);
}
else
{
// RTP / BSP protocol. Pass this to the BSP handler to set up a channel.
Log.Write(LogType.Verbose, LogComponent.PUP, "Dispatching PUP (source {0}, dest {1}) to BSP protocol for {0}.", pup.SourcePort, pup.DestinationPort, entry.FriendlyName);
BSPManager.EstablishRendezvous(pup, entry.WorkerType);
}
}
else if (BSPManager.ChannelExistsForSocket(pup))
{
// An established BSP channel, send data to it.
BSPManager.RecvData(pup);
}
else if (EFTPManager.ChannelExistsForSocket(pup))
{
EFTPManager.RecvData(pup);
}
else
{
// Not a protocol we handle; log it.
Log.Write(LogType.Normal, LogComponent.PUP, "Unhandled PUP protocol, source {0}, destination {1}, type {2}, dropped packet.", pup.SourcePort, pup.DestinationPort, pup.Type);
}
}