public static void HandleGetRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
//Return error if connection is not established.
if (xml == null && settings.Connected == ConnectionState.None && !settings.CanAccess())
{
replyData.Set(GXDLMSServer.GenerateConfirmedServiceError(ConfirmedServiceError.InitiateError,
ServiceError.Service, (byte)Service.Unsupported));
return;
}
byte invokeID = 0;
GetCommandType type = GetCommandType.NextDataBlock;
//If GBT is used data is empty.
if (data.Size != 0)
{
type = (GetCommandType)data.GetUInt8();
// Get invoke ID and priority.
invokeID = data.GetUInt8();
settings.UpdateInvokeId(invokeID);
if (xml != null)
{
xml.AppendStartTag(Command.GetRequest);
xml.AppendStartTag(Command.GetRequest, type);
xml.AppendLine(TranslatorTags.InvokeId, "Value", xml.IntegerToHex(invokeID, 2));
}
}
// GetRequest normal
if (type == GetCommandType.Normal)
{
GetRequestNormal(settings, invokeID, server, data, replyData, xml);
}
else if (type == GetCommandType.NextDataBlock)
{
// Get request for next data block
GetRequestNextDataBlock(settings, invokeID, server, data, replyData, xml, false);
}
else if (type == GetCommandType.WithList)
{
// Get request with a list.
GetRequestWithList(settings, invokeID, server, data, replyData, xml);
}
else
{
Debug.WriteLine("HandleGetRequest failed. Invalid command type.");
settings.ResetBlockIndex();
GXByteBuffer bb = new GXByteBuffer();
// Access Error : Device reports a hardware fault.
bb.SetUInt8((byte)ErrorCode.HardwareFault);
GXDLMS.GetLNPdu(new GXDLMSLNParameters(null, settings, invokeID, Command.GetResponse, (byte)type, null, bb, (byte)ErrorCode.Ok), replyData);
}
if (xml != null)
{
xml.AppendEndTag(Command.GetRequest, type);
xml.AppendEndTag(Command.GetRequest);
}
}
///<summary>
///Handle set request.
///</summary>
///<returns>
///Reply to the client.
///</returns>
public static void HandleSetRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
//Return error if connection is not established.
if (xml == null && settings.Connected == ConnectionState.None && !settings.CanAccess())
{
replyData.Set(GXDLMSServer.GenerateConfirmedServiceError(ConfirmedServiceError.InitiateError,
ServiceError.Service, (byte)Service.Unsupported));
return;
}
// Get type.
SetRequestType type = (SetRequestType)data.GetUInt8();
// Get invoke ID and priority.
byte invoke = data.GetUInt8();
settings.UpdateInvokeId(invoke);
// SetRequest normal or Set Request With First Data Block
GXDLMSLNParameters p = new GXDLMSLNParameters(null, settings, invoke, Command.SetResponse, (byte)type, null, null, 0);
if (xml != null)
{
xml.AppendStartTag(Command.SetRequest);
xml.AppendStartTag(Command.SetRequest, type);
//InvokeIdAndPriority
xml.AppendLine(TranslatorTags.InvokeId, "Value", xml.IntegerToHex(invoke, 2));
}
switch (type)
{
case SetRequestType.Normal:
case SetRequestType.FirstDataBlock:
HandleSetRequestNormal(settings, server, data, (byte)type, p, replyData, xml);
break;
case SetRequestType.WithDataBlock:
HanleSetRequestWithDataBlock(settings, server, data, p, replyData, xml);
break;
case SetRequestType.WithList:
HanleSetRequestWithList(settings, invoke, server, data, p, replyData, xml);
break;
default:
System.Diagnostics.Debug.WriteLine("HandleSetRequest failed. Unknown command.");
settings.ResetBlockIndex();
p.status = (byte)ErrorCode.HardwareFault;
break;
}
if (xml != null)
{
xml.AppendEndTag(Command.SetRequest, type);
xml.AppendEndTag(Command.SetRequest);
return;
}
GXDLMS.GetLNPdu(p, replyData);
}
///<summary>
/// Handle action request.
///</summary>
public static void HandleMethodRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXDLMSConnectionEventArgs connectionInfo, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
ErrorCode error = ErrorCode.Ok;
GXByteBuffer bb = new GXByteBuffer();
// Get type.
ActionRequestType type = (ActionRequestType)data.GetUInt8();
// Get invoke ID and priority.
byte invokeId = data.GetUInt8();
settings.UpdateInvokeId(invokeId);
// CI
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
// Attribute Id
byte id = data.GetUInt8();
// Get parameters.
object parameters = null;
byte selection = data.GetUInt8();
if (xml != null)
{
xml.AppendStartTag(Command.MethodRequest);
if (type == ActionRequestType.Normal)
{
xml.AppendStartTag(Command.MethodRequest, ActionRequestType.Normal);
xml.AppendLine(TranslatorTags.InvokeId, "Value", xml.IntegerToHex(invokeId, 2));
AppendMethodDescriptor(xml, (int)ci, ln, id);
if (selection != 0)
{
//MethodInvocationParameters
xml.AppendStartTag(TranslatorTags.MethodInvocationParameters);
GXDataInfo di = new GXDataInfo();
di.xml = xml;
GXCommon.GetData(settings, data, di);
xml.AppendEndTag(TranslatorTags.MethodInvocationParameters);
}
xml.AppendEndTag(Command.MethodRequest, ActionRequestType.Normal);
}
xml.AppendEndTag(Command.MethodRequest);
return;
}
if (selection != 0)
{
GXDataInfo info = new GXDataInfo();
parameters = GXCommon.GetData(settings, data, info);
}
GXDLMSObject obj = settings.Objects.FindByLN(ci, GXCommon.ToLogicalName(ln));
if (settings.Connected == ConnectionState.None && !settings.CanAccess() && (ci != ObjectType.AssociationLogicalName || id != 1))
{
replyData.Set(GXDLMSServer.GenerateConfirmedServiceError(ConfirmedServiceError.InitiateError,
ServiceError.Service, (byte)Service.Unsupported));
return;
}
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXCommon.ToLogicalName(ln));
}
if (obj == null)
{
// Device reports a undefined object.
error = ErrorCode.UndefinedObject;
}
else
{
ValueEventArgs e = new ValueEventArgs(server, obj, id, 0, parameters);
e.InvokeId = invokeId;
if (server.NotifyGetMethodAccess(e) == MethodAccessMode.NoAccess)
{
error = ErrorCode.ReadWriteDenied;
}
else
{
server.NotifyAction(new ValueEventArgs[] { e });
byte[] actionReply;
if (e.Handled)
{
actionReply = (byte[])e.Value;
}
else
{
actionReply = (obj as IGXDLMSBase).Invoke(settings, e);
server.NotifyPostAction(new ValueEventArgs[] { e });
}
//Set default action reply if not given.
if (actionReply != null && e.Error == 0)
{
//Add return parameters
bb.SetUInt8(1);
//Add parameters error code.
bb.SetUInt8(0);
GXCommon.SetData(settings, bb, GXDLMSConverter.GetDLMSDataType(actionReply), actionReply);
}
else
{
error = e.Error;
//Add return parameters
bb.SetUInt8(0);
}
}
invokeId = (byte)e.InvokeId;
}
GXDLMSLNParameters p = new GXDLMSLNParameters(null, settings, invokeId, Command.MethodResponse, 1, null, bb, (byte)error);
GXDLMS.GetLNPdu(p, replyData);
//If High level authentication fails.
if (obj is GXDLMSAssociationLogicalName && id == 1)
{
if ((obj as GXDLMSAssociationLogicalName).AssociationStatus == Objects.Enums.AssociationStatus.Associated)
{
server.NotifyConnected(connectionInfo);
settings.Connected |= ConnectionState.Dlms;
}
else
{
server.NotifyInvalidConnection(connectionInfo);
settings.Connected &= ~ConnectionState.Dlms;
}
}
}