public void ReceivedWhoHas(BacNetRawMessage msg)
{
//todo: implement method
}
public void ReceivedIAm(BacNetRawMessage msg, IPEndPoint endPoint)
{
BacNetRemoteDevice newDevice = new BacNetRemoteDevice();
newDevice.EndPoint = endPoint;
BacNetIpNpdu npdu;
IAm apdu;
try
{
npdu = new BacNetIpNpdu(msg.Npdu);
apdu = new IAm(msg.Apdu);
}
catch (Exception ex)
{
_logger.WarnException("Received malformed I-am", ex);
return;
}
if (npdu.Source != null)
newDevice.BacAddress = npdu.Source;
newDevice.MaxApduLength = apdu.MaxApduLength;
newDevice.InstanceNumber = apdu.deviceObject.ObjectId;
newDevice.Segmentation = apdu.SegmentationSupported;
newDevice.VendorId = apdu.VendorId;
if (newDevice.InstanceNumber == BacNetDevice.Instance.DeviceId)
return;
BacNetRemoteDevice rem =
BacNetDevice.Instance.Remote.FirstOrDefault(s => s.InstanceNumber == newDevice.InstanceNumber);
if (rem != null)
BacNetDevice.Instance.Remote.Remove(rem);
BacNetDevice.Instance.Remote.Add(newDevice);
}
public void ReceivedEventNotification(BacNetRawMessage msg)
{
UnconfirmedEventNotification apdu;
try
{
apdu = new UnconfirmedEventNotification(msg.Apdu);
}
catch { return; }
BacNetDevice.Instance.OnNotificationEvent(apdu);
}
public void ReceivedErrorAck(BacNetRawMessage msg)
{
ErrorAck apdu = new ErrorAck(msg.Apdu);
if (apdu.ServiceChoise == 12)
{
ArrayList res = new ArrayList();
res.Add(apdu.ErrorCode);
if (BacNetDevice.Instance.Waiter is int &&
Convert.ToInt32(BacNetDevice.Instance.Waiter) == apdu.InvokeId)
BacNetDevice.Instance.Waiter = res;
}
if (apdu.ServiceChoise == 15)
{
BacNetDevice.Instance.Services.Confirmed.WritePropertyCallBack(apdu.InvokeId, BacNetEnums.GetErrorMessage((byte)apdu.ErrorCode));
}
}
public void ReceivedCovNotification(BacNetRawMessage msg)
{
UnconfirmedCOVnotification apdu;
try
{
apdu = new UnconfirmedCOVnotification(msg.Apdu);
}
catch { throw; }
if (BacNetDevice.Instance.Waiter is int && Convert.ToInt32(BacNetDevice.Instance.Waiter) == apdu.InvokeId)
{
if (apdu.Object == null)
_logger.Warn("Received empty object");
BacNetDevice.Instance.Waiter = apdu;
}
}
private void ParseConfirmed(BacNetRawMessage msg, IPEndPoint endPoint)
{
if (msg.Apdu.Length > 3)
switch (msg.Apdu[3])
{
case 12:
BacNetDevice.Instance.Response.ReceivedReadProperty(msg);
break;
}
}
private void ParseComplexAck(BacNetRawMessage msg, IPEndPoint endPoint)
{
if (msg.Apdu.Length > 2)
{
//Сегментированный ответ
if ((msg.Apdu[0] >> 3 & 1) == 1)
{
/*BacNetRawMessage segmentedMsg = null;
foreach (object m in messagePool)
{
BacNetRawMessage ms = m as BacNetRawMessage;
//Если в пуле есть сообщение с таким же InvokeId как у поступившего используем его
if (ms != null && ms.Apdu[1] == msg.Apdu[1])
segmentedMsg = ms;
}
if (segmentedMsg == null) segmentedMsg = msg;*/
messagePool.Add(msg);
BacNetIpNpdu npdu = new BacNetIpNpdu(msg.Npdu);
BacNetDevice.Instance.Services.Acknowledgement.SegmentAck(endPoint, npdu.Source, msg.Apdu[1], msg.Apdu[2], msg.Apdu[3]);
//Если есть ещё сегменты
if ((msg.Apdu[0] >> 2 & 1) == 1)
{
return;
}
msg = ReassembleMessage(messagePool, msg.Apdu[1]);
}
switch (msg.Apdu[2])
{
case 12:
BacNetDevice.Instance.Response.ReceivedReadPropertyAck(msg);
break;
case 14:
BacNetDevice.Instance.Response.ReceivedReadPropertyMultipleAck(msg);
break;
}
}
}
public void ReceivedReadProperty(BacNetRawMessage msg)
{
try
{
ReadProperty apdu = new ReadProperty(msg.Apdu);
}
catch (Exception ex)
{
if (ex.Message == "Reject.Missing_required_paramter")
{
//Отправляем сообщение об ошибке
}
throw;
}
}
private BacNetRawMessage ReassembleMessage(ArrayList messageList, byte invokeId)
{
bool firstMsg = true;
ArrayList resMsg = new ArrayList();
foreach (var message in messageList)
{
BacNetRawMessage msg = message as BacNetRawMessage;
if (msg == null || msg.Apdu[1] != invokeId) continue;
if (firstMsg)
{
resMsg.AddRange(msg.Bvlc);
resMsg.AddRange(msg.Npdu);
byte[] firstApdu = new byte[msg.Apdu.Length - 2];
firstApdu[0] = msg.Apdu[0];
firstApdu[1] = msg.Apdu[1];
for (int i = 4;i< msg.Apdu.Length; i++)
firstApdu[i - 2] = msg.Apdu[i];
resMsg.AddRange(firstApdu);
firstMsg = false;
}
else
{
byte[] anyApdu = new byte[msg.Apdu.Length - 5];
Array.Copy(msg.Apdu, 5, anyApdu, 0, anyApdu.Length);
resMsg.AddRange(anyApdu);
}
}
BacNetRawMessage res = new BacNetRawMessage();
byte[] length = ByteConverter.GetBytes((ushort)resMsg.Count);
resMsg[2] = length[0];
resMsg[3] = length.Length == 2 ? length[1] : (byte)0;
res.All = (byte[]) resMsg.ToArray(typeof (byte));
return res;
}
public void ReceivedUtcTimeSynchronization(BacNetRawMessage msg)
{
//todo: implement method
}
public void ReceivedTextMessage(BacNetRawMessage msg)
{
//todo: implement method
}
public void ReceivedSimpleAck(BacNetRawMessage msg)
{
var npdu = new BacNetIpNpdu(msg.Npdu);
var apdu = new SimpleAck(msg.Apdu);
//WritePropertyOk
if (apdu.ServiceChoise == 15)
{
BacNetDevice.Instance.Services.Confirmed.WritePropertyCallBack(apdu.InvokeId, "Ok");
}
}
public void ReceivedReadPropertyMultipleAck(BacNetRawMessage msg)
{
ReadPropertyMultipleAck apdu;
try
{
apdu = new ReadPropertyMultipleAck(msg.Apdu);
}
catch (Exception ex)
{
_logger.WarnException("Malformed ReadPropertyMultipleAck: ", ex);
BacNetDevice.Instance.Waiter = new List<BacNetObject>();
return;
}
if (BacNetDevice.Instance.Waiter is int && Convert.ToInt32(BacNetDevice.Instance.Waiter) == apdu.InvokeId)
{
if (apdu.ObjectList == null)
_logger.Warn("Received empty object list");
BacNetDevice.Instance.Waiter = apdu.ObjectList;
}
//RpmE
BacNetDevice.Instance.Services.Confirmed.RpmCallBack(apdu.InvokeId, apdu.ObjectList);
}
public void ReceivedReadPropertyAck(BacNetRawMessage msg)
{
ReadPropertyAck apdu;
try
{
apdu = new ReadPropertyAck(msg.Apdu);
}
catch(Exception ex)
{
_logger.WarnException("Malformed ReadPropertyAck: ", ex);
BacNetDevice.Instance.Waiter = new ArrayList();
return;
}
if (BacNetDevice.Instance.Waiter is int && Convert.ToInt32(BacNetDevice.Instance.Waiter) == apdu.InvokeId)
BacNetDevice.Instance.Waiter = apdu.Obj.Properties[0].Values;
}
private void ParseSimpleAck(BacNetRawMessage msg, IPEndPoint endPoint)
{
BacNetDevice.Instance.Response.ReceivedSimpleAck(msg);
}
private void ParseUncofirmed(BacNetRawMessage msg, IPEndPoint endPoint)
{
switch (msg.Apdu[1])
{
case 0:
BacNetDevice.Instance.Response.ReceivedIAm(msg, endPoint);
break;
case 1:
BacNetDevice.Instance.Response.ReceivedIHave(msg);
break;
case 2:
BacNetDevice.Instance.Response.ReceivedCovNotification(msg);
break;
case 3:
BacNetDevice.Instance.Response.ReceivedEventNotification(msg);
break;
case 4:
BacNetDevice.Instance.Response.ReceivedPrivateTransfer(msg);
break;
case 5:
BacNetDevice.Instance.Response.ReceivedTextMessage(msg);
break;
case 6:
BacNetDevice.Instance.Response.ReceivedTimeSynchronization(msg);
break;
case 7:
BacNetDevice.Instance.Response.ReceivedWhoHas(msg);
break;
case 8:
BacNetDevice.Instance.Response.ReceivedWhoIs(msg);
break;
case 9:
BacNetDevice.Instance.Response.ReceivedUtcTimeSynchronization(msg);
break;
}
}
public void ReceivedWhoIs(BacNetRawMessage msg)
{
WhoIs apdu = new WhoIs(msg.Apdu);
uint devId = BacNetDevice.Instance.DeviceId;
if ((apdu.LowLimit != null && apdu.HighLimit != null && apdu.LowLimit.Value < devId && apdu.HighLimit.Value > devId) || (apdu.LowLimit == null || apdu.HighLimit == null))
BacNetDevice.Instance.Services.Unconfirmed.IAm();
}
private void ParseBacNetMessage(byte[] bytes, IPEndPoint endPoint)
{
if (bytes[0] != BacNetEnums.BACNET_BVLC_TYPE_BIP || bytes[4] != BacNetEnums.BACNET_PROTOCOL_VERSION)
return;
BacNetRawMessage msg = new BacNetRawMessage();
msg.All = bytes;
if (msg.All == null)
{
_logger.Info("Malformed packet received.");
return;
}
byte type = (byte)(msg.Apdu[0] >> 4);
switch (type)
{
case 0:
ParseConfirmed(msg, endPoint);
break;
case 1:
ParseUncofirmed(msg, endPoint);
break;
case 2:
ParseSimpleAck(msg, endPoint);
break;
case 3:
ParseComplexAck(msg, endPoint);
break;
case 5:
ParseErrorAck(msg, endPoint);
break;
}
}
public void ReceivedPrivateTransfer(BacNetRawMessage msg)
{
//todo: implement method
}
