public BacnetAsyncResult(BacnetClient comm, BacnetAddress adr, byte invoke_id, byte[] transmit_buffer, int transmit_length, bool wait_for_transmit, int transmit_timeout)
{
m_transmit_timeout = transmit_timeout;
m_adr = adr;
m_wait_for_transmit = wait_for_transmit;
m_transmit_buffer = transmit_buffer;
m_transmit_length = transmit_length;
AsyncWaitHandle = new System.Threading.ManualResetEvent(false);
m_comm = comm;
m_wait_invoke_id = invoke_id;
m_comm.OnComplexAck += new BacnetClient.ComplexAckHandler(m_comm_OnComplexAck);
m_comm.OnError += new BacnetClient.ErrorHandler(m_comm_OnError);
m_comm.OnAbort += new BacnetClient.AbortHandler(m_comm_OnAbort);
m_comm.OnSimpleAck += new BacnetClient.SimpleAckHandler(m_comm_OnSimpleAck);
m_comm.OnSegment += new BacnetClient.SegmentHandler(m_comm_OnSegment);
}
/*****************************************************************************************************/
static void handler_OnIam(BacnetClient sender, BacnetAddress adr, uint device_id, uint max_apdu, BacnetSegmentations segmentation, ushort vendor_id)
{
lock (DevicesList)
{
// Device already registred ?
foreach (BacNode bn in DevicesList)
if (bn.getAdd(device_id) != null) return; // Yes
// Not already in the list
DevicesList.Add(new BacNode(adr, device_id)); // add it
}
}
public static void StartActivity()
{
// Bacnet on UDP/IP/Ethernet
bacnet_client = new BacnetClient(new BacnetIpUdpProtocolTransport(0xBAC0, false), 3000, 3);
// or Bacnet Mstp on COM4 à 38400 bps, own master id 8
// m_bacnet_client = new BacnetClient(new BacnetMstpProtocolTransport("COM4", 38400, 8);
// Or Bacnet Ethernet
// bacnet_client = new BacnetClient(new BacnetEthernetProtocolTransport("Connexion au réseau local"));
bacnet_client.Start(); // go
// Send WhoIs in order to get back all the Iam responses :
bacnet_client.OnIam += new BacnetClient.IamHandler(handler_OnIam);
bacnet_client.WhoIs();
}
private Task StartInternalAsync()
{
if (!Initialized)
{
_starTaskCompletionSource = new TaskCompletionSource<bool>();
_bacnetClient = new BacnetClient(new BacnetMstpProtocolTransport(PortName, Baudrate, SourceAddress));
_bacnetClient.Start(); // go
// Send WhoIs in order to get back all the Iam responses :
_bacnetClient.OnIam += OnIam;
_bacnetClient.WhoIs();
Logger.Debug($"StartAsync(): Bacnet Client started / WhoIs sent. Waiting for IAm");
}
return _starTaskCompletionSource.Task;
}
private void OnIam(BacnetClient sender, BacnetAddress adr, uint deviceId, uint maxApdu,
BacnetSegmentations segmentation, ushort vendorId)
{
lock (_devicesList)
{
Logger.Debug($"OnIam(): DeviceId = {deviceId}");
// Device already registred ?
if (_devicesList.Any(bn => bn.GetAdd(deviceId) != null))
{
return; // Yes
}
// Not already in the list
_devicesList.Add(new BacNode(adr, deviceId)); // add it
Initialized = true;
if (deviceId == Settings.Default.BacnetMasterId)
{
_starTaskCompletionSource.TrySetResult(true);
}
}
}
private void m_comm_OnSimpleAck(BacnetClient sender, BacnetAddress adr, BacnetPduTypes type, BacnetConfirmedServices service, byte invoke_id, byte[] data, int data_offset, int data_length)
{
if (invoke_id == m_wait_invoke_id)
{
((System.Threading.ManualResetEvent)AsyncWaitHandle).Set();
}
}
/// <summary>
/// This is a simple handling that stores all segments in memory and assembles them when done
/// </summary>
private void PerformDefaultSegmentHandling(BacnetClient sender, BacnetAddress adr, BacnetPduTypes type, BacnetConfirmedServices service, byte invoke_id, BacnetMaxSegments max_segments, BacnetMaxAdpu max_adpu, byte sequence_number, bool first, bool more_follows, byte[] buffer, int offset, int length)
{
if (first)
{
//clear any leftover segments
m_segments.Clear();
//copy buffer + encode new adpu header
type &= ~BacnetPduTypes.SEGMENTED_MESSAGE;
int adpu_header_len = 3;
if ((type & BacnetPduTypes.PDU_TYPE_MASK) == BacnetPduTypes.PDU_TYPE_CONFIRMED_SERVICE_REQUEST) adpu_header_len = 4;
byte[] copy = new byte[length + adpu_header_len];
Array.Copy(buffer, offset, copy, adpu_header_len, length);
if ((type & BacnetPduTypes.PDU_TYPE_MASK) == BacnetPduTypes.PDU_TYPE_CONFIRMED_SERVICE_REQUEST)
APDU.EncodeConfirmedServiceRequest(new EncodeBuffer(copy, 0), type, service, max_segments, max_adpu, invoke_id, 0, 0);
else
APDU.EncodeComplexAck(new EncodeBuffer(copy, 0), type, service, invoke_id, 0, 0);
m_segments.AddLast(copy); //doesn't include BVLC or NPDU
}
else
{
//copy only content part
byte[] copy = new byte[length];
Array.Copy(buffer, offset, copy, 0, copy.Length);
m_segments.AddLast(copy);
}
//process when finished
if (!more_follows)
{
//assemble whole part
byte[] apdu_buffer = AssembleSegments();
m_segments.Clear();
//process
ProcessApdu(adr, type, apdu_buffer, 0, apdu_buffer.Length);
}
}
private void m_comm_OnSegment(BacnetClient sender, BacnetAddress adr, BacnetPduTypes type, BacnetConfirmedServices service, byte invoke_id, BacnetMaxSegments max_segments, BacnetMaxAdpu max_adpu, byte sequence_number, bool first, bool more_follows, byte[] buffer, int offset, int length)
{
if (invoke_id == m_wait_invoke_id)
{
Segmented = true;
((System.Threading.ManualResetEvent)AsyncWaitHandle).Set();
}
}
private void m_comm_OnError(BacnetClient sender, BacnetAddress adr, BacnetPduTypes type, BacnetConfirmedServices service, byte invoke_id, BacnetErrorClasses error_class, BacnetErrorCodes error_code, byte[] buffer, int offset, int length)
{
if (invoke_id == m_wait_invoke_id)
{
Error = new Exception("Error from device: " + error_class + " - " + error_code);
}
}
private void m_comm_OnComplexAck(BacnetClient sender, BacnetAddress adr, BacnetPduTypes type, BacnetConfirmedServices service, byte invoke_id, byte[] buffer, int offset, int length)
{
if (invoke_id == m_wait_invoke_id)
{
Segmented = false;
m_result = new byte[length];
if (length > 0) Array.Copy(buffer, offset, m_result, 0, length);
((System.Threading.ManualResetEvent)AsyncWaitHandle).Set(); //notify waiter even if segmented
}
}
private void m_comm_OnAbort(BacnetClient sender, BacnetAddress adr, BacnetPduTypes type, byte invoke_id, byte reason, byte[] buffer, int offset, int length)
{
if (invoke_id == m_wait_invoke_id)
{
Error = new Exception("Abort from device: " + reason);
}
}
public void Dispose()
{
if (m_comm == null) return;
m_comm.OnComplexAck -= m_comm_OnComplexAck;
m_comm.OnError -= m_comm_OnError;
m_comm.OnAbort -= m_comm_OnAbort;
m_comm.OnSimpleAck -= m_comm_OnSimpleAck;
m_comm.OnSegment -= m_comm_OnSegment;
m_comm = null;
}
