///
///<summary>Handle read request.
/// </summary>
///<returns> Reply to the client. </returns>
///
private byte[][] HandleReadRequest()
{
GXByteBuffer data = Reply.Data;
short type;
object value = null;
GXByteBuffer bb = new GXByteBuffer();
int cnt = GXCommon.GetObjectCount(data);
GXCommon.SetObjectCount(cnt, bb);
GXSNInfo info;
for (int pos = 0; pos != cnt; ++pos)
{
type = data.GetUInt8();
// GetRequest normal
if (type == 2)
{
int sn = data.GetUInt16();
info = FindSNObject(sn);
if (!info.IsAction)
{
ValueEventArgs e = new ValueEventArgs(info.Item, info.Index, 0, null);
Read(e);
if (e.Handled)
{
value = e.Value;
}
else
{
value = (info.Item as IGXDLMSBase).GetValue(Settings, info.Index, 0, null);
}
// Set status.
bb.SetUInt8(0);
GXDLMS.AppedData(info.Item, info.Index, bb, value);
}
else
{
ValueEventArgs e = new ValueEventArgs(info.Item, info.Index, 0, null);
Action(e);
if (e.Handled)
{
value = e.Value;
}
else
{
value = ((IGXDLMSBase)info.Item).Invoke(Settings, info.Index, null);
}
// Set status.
bb.SetUInt8(0);
// Add value
bb.SetUInt8(GXCommon.GetValueType(value));
bb.Add(value);
}
}
else if (type == 2)
{
// Get request for next data block
throw new System.ArgumentException("TODO: Invalid Command.");
}
else if (type == 4)
{
// Parameterised access.
int sn = data.GetUInt16();
int selector = data.GetUInt8();
GXDataInfo di = new GXDataInfo();
object parameters = GXCommon.GetData(data, di);
info = FindSNObject(sn);
if (!info.IsAction)
{
ValueEventArgs e = new ValueEventArgs(info.Item, info.Index, 0, parameters);
Read(e);
if (e.Handled)
{
value = e.Value;
}
else
{
value = (info.Item as IGXDLMSBase).GetValue(Settings, info.Index, selector, parameters);
}
// Set status.
bb.SetUInt8(0);
GXDLMS.AppedData(info.Item, info.Index, bb, value);
}
else
{
ValueEventArgs e = new ValueEventArgs(info.Item, info.Index, 0, parameters);
e.Value = parameters;
Action(e);
if (e.Handled)
{
value = e.Value;
}
else
{
value = ((IGXDLMSBase)info.Item).Invoke(Settings, info.Index, parameters);
}
// Add value
bb.Add(value);
}
}
else
{
throw new System.ArgumentException("Invalid Command.");
}
}
return(GXDLMS.SplitPdu(Settings, Command.ReadResponse, 1, bb,
ErrorCode.Ok, DateTime.MinValue)[0]);
}
private byte[][] HandleGetRequest()
{
ErrorCode error = ErrorCode.Ok;
GXByteBuffer data = Reply.Data;
GXByteBuffer bb = new GXByteBuffer();
short type;
int index = 0;
object parameters = null;
// Get type.
type = data.GetUInt8();
// Get invoke ID and priority.
data.GetUInt8();
// GetRequest normal
if (type == 1)
{
Settings.ResetBlockIndex();
ServerReply.Index = 0;
parameters = null;
// CI
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
// Attribute Id
int attributeIndex = data.GetUInt8();
GXDLMSObject obj = Settings.Objects.FindByLN(ci, GXDLMSObject.ToLogicalName(ln));
if (obj == null)
{
obj = FindObject(ci, 0, GXDLMSObject.ToLogicalName(ln));
}
if (obj == null)
{
// "Access Error : Device reports a undefined object."
error = ErrorCode.UndefinedObject;
}
else
{
// AccessSelection
int selection = data.GetUInt8();
int selector = 0;
if (selection != 0)
{
selector = data.GetUInt8();
GXDataInfo info = new GXDataInfo();
parameters = GXCommon.GetData(data, info);
}
ValueEventArgs e = new ValueEventArgs(obj, attributeIndex, 0, parameters);
Read(e);
object value;
if (e.Handled)
{
value = e.Value;
}
else
{
value = (obj as IGXDLMSBase).GetValue(Settings, attributeIndex, selector, parameters);
}
GXDLMS.AppedData(obj, attributeIndex, bb, value);
}
ServerReply.ReplyMessages = GXDLMS.SplitPdu(Settings, Command.GetResponse, 1, bb, error, DateTime.MinValue);
}
else if (type == 2)
{
// Get request for next data block
// Get block index.
index = (int)data.GetUInt32();
if (index != Settings.BlockIndex + 1)
{
Debug.WriteLine("handleGetRequest failed. Invalid block number. " + Settings.BlockIndex + "/" + index);
ServerReply.ReplyMessages = GXDLMS.SplitPdu(Settings, Command.GetResponse, 1, bb,
ErrorCode.DataBlockNumberInvalid, DateTime.MinValue);
index = 0;
ServerReply.Index = index;
}
else
{
Settings.IncreaseBlockIndex();
index = ServerReply.Index + 1;
ServerReply.Index = index;
}
}
else if (type == 3)
{
// Get request with a list.
int cnt = GXCommon.GetObjectCount(data);
GXCommon.SetObjectCount(cnt, bb);
for (int pos = 0; pos != cnt; ++pos)
{
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
short attributeIndex = data.GetUInt8();
GXDLMSObject obj = Settings.Objects.FindByLN(ci, GXDLMSObject.ToLogicalName(ln));
if (obj == null)
{
obj = FindObject(ci, 0, GXDLMSObject.ToLogicalName(ln));
}
if (obj == null)
{
// "Access Error : Device reports a undefined object."
error = ErrorCode.UndefinedObject;
}
else
{
// AccessSelection
int selection = data.GetUInt8();
int selector = 0;
if (selection != 0)
{
selector = data.GetUInt8();
GXDataInfo info = new GXDataInfo();
parameters = GXCommon.GetData(data, info);
}
try
{
ValueEventArgs e = new ValueEventArgs(obj, attributeIndex, 0, parameters);
Read(e);
object value;
if (e.Handled)
{
value = e.Value;
}
else
{
value = (obj as IGXDLMSBase).GetValue(Settings, attributeIndex, selector, parameters);
}
bb.SetUInt8(ErrorCode.Ok);
GXDLMS.AppedData(obj, attributeIndex, bb, value);
}
catch (Exception)
{
bb.SetUInt8(1);
bb.SetUInt8(ErrorCode.HardwareFault);
}
}
}
ServerReply.ReplyMessages = GXDLMS.SplitPdu(Settings, Command.GetResponse, 3, bb, error, DateTime.MinValue);
}
else
{
Debug.WriteLine("handleGetRequest failed. Invalid command type.");
Settings.ResetBlockIndex();
// Access Error : Device reports a hardware fault.
ServerReply.ReplyMessages = GXDLMS.SplitPdu(Settings, Command.GetResponse, 1, bb, ErrorCode.HardwareFault, DateTime.MinValue);
}
ServerReply.Index = index;
return(ServerReply.ReplyMessages[index]);
}
