private byte[] ReportError(Command cmd, ErrorCode error)
{
switch (cmd)
{
case Command.ReadRequest:
cmd = Command.ReadResponse;
break;
case Command.WriteRequest:
cmd = Command.WriteResponse;
break;
case Command.GetRequest:
cmd = Command.GetResponse;
break;
case Command.SetRequest:
cmd = Command.SetResponse;
break;
case Command.MethodRequest:
cmd = Command.MethodResponse;
break;
default:
//Return HW error and close connection..
break;
}
if (Settings.UseLogicalNameReferencing)
{
GXDLMS.GetLNPdu(new GXDLMSLNParameters(Settings, 0, cmd, 1, null, null, (byte)error), replyData);
}
else
{
GXByteBuffer bb = new GXByteBuffer();
bb.SetUInt8(error);
GXDLMSSNParameters p = new GXDLMSSNParameters(Settings, cmd, 1, (byte)error, null, bb);
GXDLMS.GetSNPdu(p, replyData);
}
if (this.InterfaceType == Enums.InterfaceType.WRAPPER)
{
return(GXDLMS.GetWrapperFrame(Settings, replyData));
}
else
{
return(GXDLMS.GetHdlcFrame(Settings, 0, replyData));
}
}
/// <summary>
/// Load XML commands from the file.
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public byte[][] PduToMessages(GXDLMSXmlPdu pdu)
{
List <byte[]> messages = new List <byte[]>();
if (pdu.Command == Command.Snrm)
{
messages.Add(pdu.Data);
}
else if (pdu.Command == Command.Ua)
{
messages.Add(pdu.Data);
}
else if (pdu.Command == Command.DisconnectRequest)
{
messages.Add(GXDLMS.GetHdlcFrame(Settings, (byte)Command.DisconnectRequest, new GXByteBuffer(pdu.Data)));
}
else
{
GXByteBuffer reply;
if (Settings.InterfaceType == InterfaceType.WRAPPER)
{
if (Ciphering.Security != (byte)Security.None)
{
GXDLMSLNParameters p = new GXDLMSLNParameters(this, Settings, 0, pdu.Command, 0x0, null, null, 0xff, Command.None);
reply = new GXByteBuffer(GXDLMS.Cipher0(p, pdu.Data));
}
else
{
reply = new GXByteBuffer(pdu.Data);
}
}
else
{
if (Ciphering.Security != (byte)Security.None)
{
GXDLMSLNParameters p = new GXDLMSLNParameters(this, Settings, 0, pdu.Command, 0x0, null, null, 0xff, Command.None);
byte[] tmp = GXDLMS.Cipher0(p, pdu.Data);
reply = new GXByteBuffer((UInt16)(3 + tmp.Length));
reply.Set(GXCommon.LLCSendBytes);
reply.Set(tmp);
}
else
{
reply = new GXByteBuffer((UInt16)(3 + pdu.Data.Length));
reply.Set(GXCommon.LLCSendBytes);
reply.Set(pdu.Data);
}
}
byte frame = 0;
while (reply.Position != reply.Size)
{
if (Settings.InterfaceType == Enums.InterfaceType.WRAPPER)
{
messages.Add(GXDLMS.GetWrapperFrame(Settings, pdu.Command, reply));
}
else if (Settings.InterfaceType == Enums.InterfaceType.HDLC)
{
if (pdu.Command == Command.Aarq)
{
frame = 0x10;
}
else if (pdu.Command == Command.Aare)
{
frame = 0x30;
}
else if (pdu.Command == Command.EventNotification)
{
frame = 0x13;
}
messages.Add(GXDLMS.GetHdlcFrame(Settings, frame, reply));
if (reply.Position != reply.Size)
{
frame = Settings.NextSend(false);
}
}
else if (Settings.InterfaceType == Enums.InterfaceType.PDU)
{
messages.Add(reply.Array());
break;
}
else
{
throw new ArgumentOutOfRangeException("InterfaceType");
}
}
}
return(messages.ToArray());
}
///<summary>
/// Handle received command.
///</summary>
private byte[] HandleCommand(Command cmd, GXByteBuffer data, GXDLMSConnectionEventArgs connectionInfo)
{
byte frame = 0;
switch (cmd)
{
case Command.AccessRequest:
GXDLMSLNCommandHandler.HandleAccessRequest(Settings, this, data, replyData, null);
break;
case Command.SetRequest:
GXDLMSLNCommandHandler.HandleSetRequest(Settings, this, data, replyData, null);
break;
case Command.WriteRequest:
GXDLMSSNCommandHandler.HandleWriteRequest(Settings, this, data, replyData, null);
break;
case Command.GetRequest:
if (data.Size != 0)
{
GXDLMSLNCommandHandler.HandleGetRequest(Settings, this, data, replyData, null);
}
break;
case Command.ReadRequest:
GXDLMSSNCommandHandler.HandleReadRequest(Settings, this, data, replyData, null);
break;
case Command.MethodRequest:
GXDLMSLNCommandHandler.HandleMethodRequest(Settings, this, data, connectionInfo, replyData, null);
break;
case Command.Snrm:
HandleSnrmRequest();
frame = (byte)Command.Ua;
break;
case Command.Aarq:
HandleAarqRequest(data, connectionInfo);
break;
case Command.ReleaseRequest:
case Command.DisconnectRequest:
GenerateDisconnectRequest();
Settings.Connected = false;
Disconnected(connectionInfo);
frame = (byte)Command.Ua;
break;
case Command.None:
//Get next frame.
break;
default:
Debug.WriteLine("Invalid command: " + (int)cmd);
break;
}
byte[] reply;
if (this.InterfaceType == Enums.InterfaceType.WRAPPER)
{
reply = GXDLMS.GetWrapperFrame(Settings, replyData);
}
else
{
reply = GXDLMS.GetHdlcFrame(Settings, frame, replyData);
}
return(reply);
}
///<summary>
/// Handles client request.
/// </summary>
///<param name="buff">
/// Received data from the client. </param>
///<returns>
///Response to the request. Response is null if request packet is not complete.
///</returns>
public virtual byte[] HandleRequest(byte[] buff, GXDLMSConnectionEventArgs connectionInfo)
{
if (buff == null || buff.Length == 0)
{
return(null);
}
if (!Initialized)
{
throw new Exception("Server not Initialized.");
}
try
{
receivedData.Set(buff);
bool first = Settings.ServerAddress == 0 && Settings.ClientAddress == 0;
GXDLMS.GetData(Settings, receivedData, info);
//If all data is not received yet.
if (!info.IsComplete)
{
return(null);
}
receivedData.Clear();
if (first)
{
// Check is data send to this server.
if (!IsTarget(Settings.ServerAddress,
Settings.ClientAddress))
{
info.Clear();
return(null);
}
}
//If client want next frame.
if ((info.MoreData & RequestTypes.Frame) == RequestTypes.Frame)
{
return(GXDLMS.GetHdlcFrame(Settings, Settings.ReceiverReady(), replyData));
}
//Update command if transaction and next frame is asked.
if (info.Command == Command.None)
{
if (transaction != null)
{
info.Command = transaction.command;
}
}
//Check inactivity time out.
if (hdlcSetup != null)
{
if (info.Command == Command.Snrm)
{
dataReceived = DateTime.Now;
}
else
{
int elapsed = (int)(DateTime.Now - dataReceived).TotalSeconds;
//If inactivity time out is elapsed.
if (elapsed >= hdlcSetup.InactivityTimeout)
{
Reset();
dataReceived = DateTime.MinValue;
return(null);
}
dataReceived = DateTime.Now;
}
}
byte[] reply = HandleCommand(info.Command, info.Data, connectionInfo);
info.Clear();
return(reply);
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
if (info.Command != Command.None)
{
return(ReportError(info.Command, ErrorCode.HardwareFault));
}
else
{
Reset();
if (Settings.Connected)
{
Settings.Connected = false;
Disconnected(connectionInfo);
}
return(null);
}
}
}
/// <summary>
/// Load XML commands from the file.
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public byte[][] PduToMessages(GXDLMSXmlPdu pdu)
{
List <byte[]> messages = new List <byte[]>();
if (pdu.Command == Command.Snrm)
{
messages.Add(pdu.Data);
}
else if (pdu.Command == Command.Ua)
{
messages.Add(pdu.Data);
}
else if (pdu.Command == Command.DisconnectRequest)
{
messages.Add(GXDLMS.GetHdlcFrame(Settings, (byte)Command.DisconnectRequest, new GXByteBuffer(pdu.Data)));
}
else
{
GXByteBuffer reply;
if (Settings.InterfaceType == Enums.InterfaceType.WRAPPER)
{
reply = new GXByteBuffer(pdu.Data);
}
else
{
reply = new GXByteBuffer((UInt16)(3 + pdu.Data.Length));
reply.Set(GXCommon.LLCSendBytes);
reply.Set(pdu.Data);
}
while (reply.Position != reply.Size)
{
if (Settings.InterfaceType == Enums.InterfaceType.WRAPPER)
{
messages.Add(GXDLMS.GetWrapperFrame(Settings, reply));
}
else if (Settings.InterfaceType == Enums.InterfaceType.HDLC)
{
byte frame = 0;
if (pdu.Command == Command.Aarq)
{
frame = 0x10;
}
else if (pdu.Command == Command.Aare)
{
frame = 0x30;
}
else if (pdu.Command == Command.EventNotification)
{
frame = 0x13;
}
messages.Add(GXDLMS.GetHdlcFrame(Settings, frame, reply));
if (reply.Position != reply.Size)
{
if (Settings.IsServer || pdu.Command == Command.SetRequest ||
pdu.Command == Command.MethodRequest)
{
frame = 0;
}
else
{
frame = Settings.NextSend(false);
}
}
}
else if (Settings.InterfaceType == Enums.InterfaceType.PDU)
{
messages.Add(reply.Array());
break;
}
else
{
throw new ArgumentOutOfRangeException("InterfaceType");
}
}
}
return(messages.ToArray());
}
/// <summary>
/// Load XML commands from the file.
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public List <GXDLMSXmlMessage> Load(string fileName)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(File.ReadAllText(fileName));
List <GXDLMSXmlMessage> actions = new List <GXDLMSXmlMessage>();
foreach (XmlNode m1 in doc.ChildNodes)
{
if (m1.NodeType == XmlNodeType.Element)
{
foreach (XmlNode node in m1.ChildNodes)
{
if (node.NodeType == XmlNodeType.Element)
{
List <byte[]> messages = new List <byte[]>();
GXDLMSXmlSettings s = new GXDLMSXmlSettings(translator.OutputType, translator.Hex, translator.ShowStringAsHex, translator.tagsByName);;
s.settings.ClientAddress = Settings.ClientAddress;
s.settings.ServerAddress = Settings.ServerAddress;
GXByteBuffer reply = new GXByteBuffer(translator.XmlToPdu(node.OuterXml, s));
if (s.command == Command.Snrm)
{
messages.Add(reply.Array());
}
else if (s.command == Command.Ua)
{
Settings.Limits.MaxInfoTX = s.settings.Limits.MaxInfoTX;
Settings.Limits.MaxInfoRX = s.settings.Limits.MaxInfoRX;
Settings.Limits.WindowSizeRX = s.settings.Limits.WindowSizeRX;
Settings.Limits.WindowSizeTX = s.settings.Limits.WindowSizeTX;
messages.Add(reply.Array());
}
else if (s.command == Command.DisconnectRequest)
{
messages.Add(GXDLMS.GetHdlcFrame(Settings, (byte)Command.DisconnectRequest, reply));
}
else
{
while (reply.Position != reply.Size)
{
if (Settings.InterfaceType == Enums.InterfaceType.WRAPPER)
{
messages.Add(GXDLMS.GetWrapperFrame(Settings, reply));
}
else if (Settings.InterfaceType == Enums.InterfaceType.HDLC)
{
byte frame = 0;
if (s.command == Command.Aarq)
{
frame = 0x10;
}
else if (s.command == Command.Aare)
{
frame = 0x30;
}
else if (s.command == Command.EventNotification)
{
frame = 0x13;
}
messages.Add(GXDLMS.GetHdlcFrame(Settings, frame, reply));
if (reply.Position != reply.Size)
{
if (Settings.IsServer || s.command == Command.SetRequest)
{
frame = 0;
}
else
{
frame = Settings.NextSend(false);
}
}
}
else if (Settings.InterfaceType == Enums.InterfaceType.PDU)
{
messages.Add(reply.Array());
break;
}
else
{
throw new ArgumentOutOfRangeException("InterfaceType");
}
}
}
actions.Add(new GXDLMSXmlMessage(s.command, node, messages.ToArray()));
}
}
}
}
return(actions);
}