// This method that will be called when the thread is started
public void BACnetListenerMethod()
{
Console.WriteLine("Thread starting for port " + Convert.ToString(BACnet_port));
while (true)
{
Byte[] received = new Byte[2000];
BACnetPacket incomingCRPpacket = new BACnetPacket(_apm, _bnm);
// Create an IPEndPoint to capture the identity of the sending host.
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
EndPoint senderRemote = (EndPoint)sender;
try
{
incomingCRPpacket.length = _bnm.bacnet_listen_socket.ReceiveFrom(received, ref senderRemote);
Console.WriteLine("This message was sent from " + ((IPEndPoint)senderRemote).Address.ToString() + " Port " + ((IPEndPoint)senderRemote).Port.ToString());
incomingCRPpacket.directlyConnectedIPEndPointOfDevice = new myIPEndPoint(senderRemote);
incomingCRPpacket.buffer = received;
// Decode the packet
bool decodeOK = incomingCRPpacket.DecodeBACnet(received, incomingCRPpacket.length);
if (!decodeOK)
{
continue;
}
// log this data
PacketLog pkt = new PacketLog(false, (IPEndPoint)senderRemote, incomingCRPpacket);
pkt.BACnetPacket = (BACnetPacket)incomingCRPpacket;
_bnm.BACnetMessageLog.Enqueue(pkt);
// did packet Decode fail to create a device? If so, we are not interested. e.g. Who-Is.
if (incomingCRPpacket.srcDevice == null)
{
_apm.MessageTodo("m0039 - Device not created by packet decode");
continue;
}
_apm.pktQueueToApplication.Enqueue(incomingCRPpacket);
}
catch (SocketException)
{
// we expect a socket exception when shutting down
System.Console.WriteLine("socket exception occurred");
}
catch (System.Threading.ThreadAbortException)
{
System.Console.WriteLine("Thread abort exception occurred (shutting down)");
}
catch (Exception efe)
{
// need to catch the inevitable exception when this blocking call is cancelled by the shutdown code
_apm.MessagePanic(efe.ToString());
}
}
}
// This method that will be called when the thread is started
public void BACnetInsideListener()
{
while (true)
{
// Byte[] received = new Byte[2000];
BACnetPacket packet = new BACnetPacket(_apm);
// Create an IPEndPoint to capture the identity of the sending host.
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
EndPoint senderRemote = (EndPoint)sender;
try
{
// bacnet_listen_socket.Receive(received);
packet.length = listen_socket.ReceiveFrom(packet.buffer, ref senderRemote);
// Console.WriteLine("This message was sent from " + ((IPEndPoint)senderRemote).Address.ToString() + " Port " + ((IPEndPoint)senderRemote).Port.ToString());
// packet.fromBIP = (IPEndPoint) senderRemote;
packet.directlyConnectedIPEndPointOfDevice = new myIPEndPoint();
packet.directlyConnectedIPEndPointOfDevice.Port = ((IPEndPoint)senderRemote).Port;
packet.directlyConnectedIPEndPointOfDevice.Address = ((IPEndPoint)senderRemote).Address;
// if the packet is from ourselves, discard
if (listen_socket.detect_echo_packet(bnm, packet) == true)
{
continue;
}
// todo - one day, we will be able to see if this packet was addressed to this host in a broadcast packet, and mark the dadr accordingly, that is, if we care.
// todo - remove directlyconnected
//packet.srcDevice.adr = new ADR ( packet.directlyConnectedIPEndPointOfDevice ) ;
// Make an undecoded copy of the packet for the application layer. This is to ease debugging in the asynch application layer.
BACnetPacket appPkt = (BACnetPacket)packet.Clone();
// packet.buffer = received;
packet.DecodeBACnet();
// extract some information from the packet for our caches
if (packet.sAdr != null)
{
lock (_apm.internalRouterInfo)
{
_apm.internalRouterInfo.AddRoutingTableEntry(packet.sAdr.networkNumber);
}
}
if (packet.routerTableList != null)
{
lock (_apm.internalRouterInfo)
{
foreach (RoutingTableEntry re in packet.routerTableList)
{
// surrounding this because we know of at least one router out there that has illegal network numbers
try
{
_apm.internalRouterInfo.AddRoutingTableEntry(re.networkNumber);
}
catch (ProtocolException pe)
{
pe.DumpException(_apm);
}
}
}
}
// display the decoded packet in the UI treeview
bnm.newPacketQueue.myEnqueue(packet);
// todo, if diagnostics are not running, then this queue will overflow.... hence the check.. find a cleaner method..
if (_apm.pktQueueToApplication.Count < 1000)
{
_apm.pktQueueToApplication.myEnqueue(appPkt); // notice, this is not a copy of the packet, it is a pointer to the same packet.... kick me if there are problems one day
}
}
catch (ProtocolException pe)
{
pe.DumpException(_apm);
}
catch (SocketException)
{
// need to catch the inevitable exception when this blocking call is cancelled by the shutdown code
// ignore, they will happen on shutdown
}
catch (ThreadAbortException)
{
}
catch (Exception efe)
{
_apm.MessagePanic(efe.ToString());
}
}
}
