|
private NotifyRead ( |
||
| args | Handled read requests. | |
| return | void | |
/// <summary>
/// Handle get request with list command.
/// </summary>
/// <param name="data">Received data.</param>
private static void GetRequestWithList(GXDLMSSettings settings, byte invokeID, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
ValueEventArgs e;
GXByteBuffer bb = new GXByteBuffer();
int pos;
int cnt = GXCommon.GetObjectCount(data);
GXCommon.SetObjectCount(cnt, bb);
List <ValueEventArgs> list = new List <ValueEventArgs>();
if (xml != null)
{
xml.AppendStartTag(TranslatorTags.AttributeDescriptorList, "Qty", xml.IntegerToHex(cnt, 2));
}
try
{
for (pos = 0; pos != cnt; ++pos)
{
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
short attributeIndex = data.GetUInt8();
// AccessSelection
int selection = data.GetUInt8();
int selector = 0;
object parameters = null;
if (selection != 0)
{
selector = data.GetUInt8();
GXDataInfo info = new GXDataInfo();
parameters = GXCommon.GetData(settings, data, info);
}
if (xml != null)
{
xml.AppendStartTag(TranslatorTags.AttributeDescriptorWithSelection);
xml.AppendStartTag(TranslatorTags.AttributeDescriptor);
xml.AppendComment(ci.ToString());
xml.AppendLine(TranslatorTags.ClassId, "Value", xml.IntegerToHex((int)ci, 4));
xml.AppendComment(GXCommon.ToLogicalName(ln));
xml.AppendLine(TranslatorTags.InstanceId, "Value", GXCommon.ToHex(ln, false));
xml.AppendLine(TranslatorTags.AttributeId, "Value", xml.IntegerToHex(attributeIndex, 2));
xml.AppendEndTag(TranslatorTags.AttributeDescriptor);
xml.AppendEndTag(TranslatorTags.AttributeDescriptorWithSelection);
}
else
{
GXDLMSObject obj = settings.Objects.FindByLN(ci, GXCommon.ToLogicalName(ln));
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXCommon.ToLogicalName(ln));
}
if (obj == null)
{
// "Access Error : Device reports a undefined object."
e = new ValueEventArgs(server, obj, attributeIndex, 0, 0);
e.Error = ErrorCode.UndefinedObject;
list.Add(e);
}
else
{
ValueEventArgs arg = new ValueEventArgs(server, obj, attributeIndex, selector, parameters);
arg.InvokeId = invokeID;
if (server.NotifyGetAttributeAccess(arg) == AccessMode.NoAccess)
{
//Read Write denied.
arg.Error = ErrorCode.ReadWriteDenied;
list.Add(arg);
}
else
{
list.Add(arg);
}
}
}
}
}
catch (Exception ex)
{
if (xml == null)
{
throw ex;
}
}
if (xml != null)
{
xml.AppendEndTag(TranslatorTags.AttributeDescriptorList);
return;
}
server.NotifyRead(list.ToArray());
object value;
pos = 0;
foreach (ValueEventArgs it in list)
{
try
{
if (it.Handled)
{
value = it.Value;
}
else
{
value = (it.Target as IGXDLMSBase).GetValue(settings, it);
}
bb.SetUInt8(it.Error);
if (it.ByteArray)
{
bb.Set((byte[])value);
}
else
{
GXDLMS.AppendData(settings, it.Target, it.Index, bb, value);
}
invokeID = (byte)it.InvokeId;
}
catch (Exception)
{
bb.SetUInt8((byte)ErrorCode.HardwareFault);
}
if (settings.Index != settings.Count)
{
server.transaction = new GXDLMSLongTransaction(list.ToArray(), Command.GetRequest, null);
}
++pos;
}
server.NotifyPostRead(list.ToArray());
GXDLMSLNParameters p = new GXDLMSLNParameters(null, settings, invokeID, Command.GetResponse, 3, null, bb, 0xFF);
GXDLMS.GetLNPdu(p, replyData);
}
/// <summary>
/// Handle get request normal command.
/// </summary>
/// <param name="data">Received data.</param>
private static void GetRequestNormal(GXDLMSSettings settings, byte invokeID, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
ValueEventArgs e = null;
GXByteBuffer bb = new GXByteBuffer();
// Get type.
ErrorCode status = ErrorCode.Ok;
settings.Count = settings.Index = 0;
settings.ResetBlockIndex();
// CI
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
// Attribute Id
byte attributeIndex = data.GetUInt8();
// AccessSelection
byte selection = data.GetUInt8();
byte selector = 0;
object parameters = null;
GXDataInfo info = new GXDataInfo();
if (selection != 0)
{
selector = data.GetUInt8();
}
if (xml != null)
{
AppendAttributeDescriptor(xml, (int)ci, ln, attributeIndex);
if (selection != 0)
{
info.xml = xml;
xml.AppendStartTag(TranslatorTags.AccessSelection);
xml.AppendLine(TranslatorTags.AccessSelector, "Value", xml.IntegerToHex(selector, 2));
xml.AppendStartTag(TranslatorTags.AccessParameters);
GXCommon.GetData(settings, data, info);
xml.AppendEndTag(TranslatorTags.AccessParameters);
xml.AppendEndTag(TranslatorTags.AccessSelection);
}
return;
}
if (selection != 0)
{
parameters = GXCommon.GetData(settings, data, info);
}
GXDLMSObject obj = settings.Objects.FindByLN(ci, GXCommon.ToLogicalName(ln));
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXCommon.ToLogicalName(ln));
}
e = new ValueEventArgs(server, obj, attributeIndex, selector, parameters);
e.InvokeId = invokeID;
if (obj == null)
{
// "Access Error : Device reports a undefined object."
status = ErrorCode.UndefinedObject;
}
else
{
if (server.NotifyGetAttributeAccess(e) == AccessMode.NoAccess)
{
//Read Write denied.
status = ErrorCode.ReadWriteDenied;
}
else
{
if (e.Target is GXDLMSProfileGeneric && attributeIndex == 2)
{
e.RowToPdu = GXDLMS.RowsToPdu(settings, (GXDLMSProfileGeneric)e.Target);
}
object value;
server.NotifyRead(new ValueEventArgs[] { e });
if (e.Handled)
{
value = e.Value;
}
else
{
settings.Count = e.RowEndIndex - e.RowBeginIndex;
value = (obj as IGXDLMSBase).GetValue(settings, e);
}
if (e.ByteArray)
{
bb.Set((byte[])value);
}
else
{
GXDLMS.AppendData(settings, obj, attributeIndex, bb, value);
}
server.NotifyPostRead(new ValueEventArgs[] { e });
status = e.Error;
}
}
GXDLMSLNParameters p = new GXDLMSLNParameters(null, settings, e.InvokeId, Command.GetResponse, 1, null, bb, (byte)status);
GXDLMS.GetLNPdu(p, replyData);
if (settings.Count != settings.Index || bb.Size != bb.Position)
{
server.transaction = new GXDLMSLongTransaction(new ValueEventArgs[] { e }, Command.GetRequest, bb);
}
}
/// <summary>
/// Handle get request next data block command.
/// </summary>
/// <param name="data">Received data.</param>
internal static void GetRequestNextDataBlock(GXDLMSSettings settings, byte invokeID, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml, bool streaming)
{
GXByteBuffer bb = new GXByteBuffer();
if (!streaming)
{
UInt32 index;
// Get block index.
index = data.GetUInt32();
if (xml != null)
{
xml.AppendLine(TranslatorTags.BlockNumber, null, xml.IntegerToHex(index, 8));
return;
}
if (index != settings.BlockIndex)
{
Debug.WriteLine("handleGetRequest failed. Invalid block number. " + settings.BlockIndex + "/" + index);
GXDLMS.GetLNPdu(new GXDLMSLNParameters(null, settings, 0, Command.GetResponse, 2, null, bb, (byte)ErrorCode.DataBlockNumberInvalid), replyData);
return;
}
}
settings.IncreaseBlockIndex();
GXDLMSLNParameters p = new GXDLMSLNParameters(null, settings, invokeID, streaming ? Command.GeneralBlockTransfer : Command.GetResponse, 2, null, bb, (byte)ErrorCode.Ok);
p.Streaming = streaming;
p.WindowSize = settings.WindowSize;
//If transaction is not in progress.
if (server.transaction == null)
{
p.status = (byte)ErrorCode.NoLongGetOrReadInProgress;
}
else
{
bb.Set(server.transaction.data);
bool moreData = settings.Index != settings.Count;
if (moreData)
{
//If there is multiple blocks on the buffer.
//This might happen when Max PDU size is very small.
if (bb.Size < settings.MaxPduSize)
{
foreach (ValueEventArgs arg in server.transaction.targets)
{
object value;
server.NotifyRead(new ValueEventArgs[] { arg });
if (arg.Handled)
{
value = arg.Value;
}
else
{
value = (arg.Target as IGXDLMSBase).GetValue(settings, arg);
}
//Add data.
if (arg.ByteArray)
{
bb.Set((byte[])value);
}
else
{
GXDLMS.AppendData(settings, arg.Target, arg.Index, bb, value);
}
}
moreData = settings.Index != settings.Count;
}
}
p.multipleBlocks = true;
GXDLMS.GetLNPdu(p, replyData);
if (moreData || bb.Size - bb.Position != 0)
{
server.transaction.data = bb;
}
else
{
server.transaction = null;
settings.ResetBlockIndex();
}
}
}
/// <summary>
/// Handle read Block in blocks.
/// </summary>
/// <param name="data">Received data.</param>
private static void HandleReadBlockNumberAccess(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
UInt16 blockNumber = data.GetUInt16();
if (xml != null)
{
xml.AppendStartTag(Command.ReadRequest, VariableAccessSpecification.BlockNumberAccess);
xml.AppendLine("<BlockNumber Value=\"" + xml.IntegerToHex(blockNumber, 4) + "\" />");
xml.AppendEndTag(Command.ReadRequest, VariableAccessSpecification.BlockNumberAccess);
return;
}
if (blockNumber != settings.BlockIndex)
{
GXByteBuffer bb = new GXByteBuffer();
Debug.WriteLine("handleReadRequest failed. Invalid block number. " + settings.BlockIndex + "/" + blockNumber);
bb.SetUInt8(ErrorCode.DataBlockNumberInvalid);
GXDLMS.GetSNPdu(new GXDLMSSNParameters(settings, Command.ReadResponse, 1, (byte)SingleReadResponse.DataAccessError, bb, null), replyData);
settings.ResetBlockIndex();
return;
}
if (settings.Index != settings.Count && server.transaction.data.Size < settings.MaxPduSize)
{
List <ValueEventArgs> reads = new List <ValueEventArgs>();
List <ValueEventArgs> actions = new List <ValueEventArgs>();
foreach (ValueEventArgs it in server.transaction.targets)
{
if (it.action)
{
actions.Add(it);
}
else
{
reads.Add(it);
}
}
if (reads.Count != 0)
{
server.NotifyRead(reads.ToArray());
}
if (actions.Count != 0)
{
server.NotifyAction(actions.ToArray());
}
GetReadData(settings, server.transaction.targets, server.transaction.data);
if (reads.Count != 0)
{
server.NotifyPostRead(reads.ToArray());
}
if (actions.Count != 0)
{
server.NotifyPostAction(actions.ToArray());
}
}
settings.IncreaseBlockIndex();
GXDLMSSNParameters p = new GXDLMSSNParameters(settings, Command.ReadResponse, 1,
(byte)SingleReadResponse.DataBlockResult, null, server.transaction.data);
p.multipleBlocks = true;
GXDLMS.GetSNPdu(p, replyData);
//If all data is sent.
if (server.transaction.data.Size == server.transaction.data.Position)
{
server.transaction = null;
settings.ResetBlockIndex();
}
else
{
server.transaction.data.Trim();
}
}
/// <summary>
/// Handle read request.
/// </summary>
/// <param name="settings">DLMS settings.</param>
/// <param name="server">DLMS server.</param>
/// <param name="data">Received data.</param>
public static void HandleReadRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
GXByteBuffer bb = new GXByteBuffer();
int cnt = 0xFF;
byte type = 0;
List <ValueEventArgs> list = new List <ValueEventArgs>();
List <ValueEventArgs> reads = new List <ValueEventArgs>();
List <ValueEventArgs> actions = new List <ValueEventArgs>();
//If get next frame.
if (xml == null && data.Size == 0)
{
if (server.transaction != null)
{
return;
}
bb.Set(replyData);
replyData.Clear();
foreach (ValueEventArgs it in server.transaction.targets)
{
list.Add(it);
}
}
else
{
cnt = GXCommon.GetObjectCount(data);
if (xml != null)
{
xml.AppendStartTag(Command.ReadRequest, "Qty", xml.IntegerToHex(cnt, 2));
}
for (int pos = 0; pos != cnt; ++pos)
{
type = data.GetUInt8();
if (type == (byte)VariableAccessSpecification.VariableName ||
type == (byte)VariableAccessSpecification.ParameterisedAccess)
{
HandleRead(settings, server, type, data, list, reads, actions, replyData, xml);
}
else if (type == (byte)VariableAccessSpecification.BlockNumberAccess)
{
HandleReadBlockNumberAccess(settings, server, data, replyData, xml);
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
}
return;
}
else if (type == (byte)VariableAccessSpecification.ReadDataBlockAccess)
{
HandleReadDataBlockAccess(settings, server, Command.ReadResponse, data, cnt, replyData, xml);
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
}
return;
}
else
{
ReturnSNError(settings, server, Command.ReadResponse, ErrorCode.ReadWriteDenied, replyData);
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
}
return;
}
}
if (reads.Count != 0)
{
server.NotifyRead(reads.ToArray());
}
if (actions.Count != 0)
{
server.NotifyAction(actions.ToArray());
}
}
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
return;
}
byte requestType = (byte)GetReadData(settings, list.ToArray(), bb);
if (reads.Count != 0)
{
server.NotifyPostRead(reads.ToArray());
}
if (actions.Count != 0)
{
server.NotifyPostAction(actions.ToArray());
}
GXDLMSSNParameters p = new GXDLMSSNParameters(settings, Command.ReadResponse, list.Count, requestType, null, bb);
GXDLMS.GetSNPdu(p, replyData);
if (server.transaction == null && (bb.Size != bb.Position || settings.Count != settings.Index))
{
reads = new List <ValueEventArgs>();
foreach (var it in list)
{
reads.Add(it);
}
server.transaction = new GXDLMSLongTransaction(reads.ToArray(), Command.ReadRequest, bb);
}
else if (server.transaction != null)
{
replyData.Set(bb);
return;
}
}
/// <summary>
/// Handle get request with list command.
/// </summary>
/// <param name="data">Received data.</param>
private static void GetRequestWithList(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
ValueEventArgs e;
GXByteBuffer bb = new GXByteBuffer();
int pos;
int cnt = GXCommon.GetObjectCount(data);
GXCommon.SetObjectCount(cnt, bb);
List<ValueEventArgs> list = new List<ValueEventArgs>();
if (xml != null)
{
xml.AppendStartTag(TranslatorTags.AttributeDescriptorList, "Qty", xml.IntegerToHex(cnt, 2));
}
try
{
for (pos = 0; pos != cnt; ++pos)
{
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
short attributeIndex = data.GetUInt8();
// AccessSelection
int selection = data.GetUInt8();
int selector = 0;
object parameters = null;
if (selection != 0)
{
selector = data.GetUInt8();
GXDataInfo info = new GXDataInfo();
parameters = GXCommon.GetData(settings, data, info);
}
if (xml != null)
{
xml.AppendStartTag(TranslatorTags.AttributeDescriptorWithSelection);
xml.AppendStartTag(TranslatorTags.AttributeDescriptor);
xml.AppendLine(TranslatorTags.ClassId, "Value", xml.IntegerToHex((int)ci, 4));
xml.AppendLine(TranslatorTags.InstanceId, "Value", GXCommon.ToHex(ln, false));
xml.AppendLine(TranslatorTags.AttributeId, "Value", xml.IntegerToHex(attributeIndex, 2));
xml.AppendEndTag(TranslatorTags.AttributeDescriptor);
xml.AppendEndTag(TranslatorTags.AttributeDescriptorWithSelection);
}
else
{
GXDLMSObject obj = settings.Objects.FindByLN(ci, GXDLMSObject.ToLogicalName(ln));
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXDLMSObject.ToLogicalName(ln));
}
if (obj == null)
{
// "Access Error : Device reports a undefined object."
e = new ValueEventArgs(settings, obj, attributeIndex, 0, 0);
e.Error = ErrorCode.UndefinedObject;
list.Add(e);
}
else
{
if (obj.GetAccess(attributeIndex) == AccessMode.NoAccess)
{
//Read Write denied.
ValueEventArgs arg = new ValueEventArgs(settings, obj, attributeIndex, 0, null);
arg.Error = ErrorCode.ReadWriteDenied;
list.Add(arg);
}
else
{
ValueEventArgs arg = new ValueEventArgs(settings, obj, attributeIndex, selector, parameters);
list.Add(arg);
}
}
}
}
}
catch (Exception ex)
{
if (xml == null)
{
throw ex;
}
}
if (xml != null)
{
xml.AppendEndTag(TranslatorTags.AttributeDescriptorList);
return;
}
server.NotifyRead(list.ToArray());
object value;
pos = 0;
foreach (ValueEventArgs it in list)
{
try
{
if (it.Handled)
{
value = it.Value;
}
else
{
value = (it.Target as IGXDLMSBase).GetValue(settings, it);
}
bb.SetUInt8(it.Error);
GXDLMS.AppendData(settings, it.Target, it.Index, bb, value);
}
catch (Exception)
{
bb.SetUInt8((byte)ErrorCode.HardwareFault);
}
if (settings.Index != settings.Count)
{
server.transaction = new GXDLMSLongTransaction(list.ToArray(), Command.GetRequest, null);
}
++pos;
}
GXDLMSLNParameters p = new GXDLMSLNParameters(settings, Command.GetResponse, 3, null, bb, 0xFF);
GXDLMS.GetLNPdu(p, replyData);
}
/// <summary>
/// Handle get request next data block command.
/// </summary>
/// <param name="data">Received data.</param>
private static void GetRequestNextDataBlock(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
GXByteBuffer bb = new GXByteBuffer();
UInt32 index;
// Get block index.
index = data.GetUInt32();
if (xml != null)
{
xml.AppendLine(TranslatorTags.BlockNumber, null, xml.IntegerToHex(index, 8));
return;
}
if (index != settings.BlockIndex)
{
Debug.WriteLine("handleGetRequest failed. Invalid block number. " + settings.BlockIndex + "/" + index);
GXDLMS.GetLNPdu(new GXDLMSLNParameters(settings, Command.GetResponse, 2, null, bb, (byte)ErrorCode.DataBlockNumberInvalid), replyData);
}
else
{
settings.IncreaseBlockIndex();
GXDLMSLNParameters p = new GXDLMSLNParameters(settings, Command.GetResponse, 2, null, bb, (byte)ErrorCode.Ok);
//If transaction is not in progress.
if (server.transaction == null)
{
p.status = (byte)ErrorCode.NoLongGetOrReadInProgress;
}
else
{
bb.Set(server.transaction.data);
bool moreData = settings.Index != settings.Count;
if (moreData)
{
//If there is multiple blocks on the buffer.
//This might happen when Max PDU size is very small.
if (bb.Size < settings.MaxPduSize)
{
foreach (ValueEventArgs arg in server.transaction.targets)
{
object value;
if (arg.Handled)
{
server.NotifyRead(new ValueEventArgs[] { arg });
value = arg.Value;
}
else
{
value = (arg.Target as IGXDLMSBase).GetValue(settings, arg);
}
//Add data.
GXDLMS.AppendData(settings, arg.Target, arg.Index, bb, value);
}
moreData = settings.Index != settings.Count;
}
}
p.multipleBlocks = true;
GXDLMS.GetLNPdu(p, replyData);
if (moreData || bb.Size - bb.Position != 0)
{
server.transaction.data = bb;
}
else
{
server.transaction = null;
}
}
}
}
/// <summary>
/// Handle get request normal command.
/// </summary>
/// <param name="data">Received data.</param>
private static void GetRequestNormal(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
ValueEventArgs e = null;
GXByteBuffer bb = new GXByteBuffer();
// Get type.
ErrorCode status = ErrorCode.Ok;
settings.Count = settings.Index = 0;
settings.ResetBlockIndex();
// CI
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
// Attribute Id
byte attributeIndex = data.GetUInt8();
// AccessSelection
byte selection = data.GetUInt8();
byte selector = 0;
object parameters = null;
GXDataInfo info = new GXDataInfo();
if (selection != 0)
{
selector = data.GetUInt8();
}
if (xml != null)
{
AppendAttributeDescriptor(xml, (int)ci, ln, attributeIndex);
if (selection != 0)
{
info.xml = xml;
xml.AppendStartTag(TranslatorTags.AccessSelection);
xml.AppendLine(TranslatorTags.AccessSelector, "Value", xml.IntegerToHex(selector, 2));
xml.AppendStartTag(TranslatorTags.AccessParameters);
GXCommon.GetData(settings, data, info);
xml.AppendEndTag(TranslatorTags.AccessParameters);
xml.AppendEndTag(TranslatorTags.AccessSelection);
}
return;
}
if (selection != 0)
{
parameters = GXCommon.GetData(settings, data, info);
}
GXDLMSObject obj = settings.Objects.FindByLN(ci, GXDLMSObject.ToLogicalName(ln));
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXDLMSObject.ToLogicalName(ln));
}
if (obj == null)
{
// "Access Error : Device reports a undefined object."
status = ErrorCode.UndefinedObject;
}
else
{
if (obj.GetAccess(attributeIndex) == AccessMode.NoAccess)
{
//Read Write denied.
status = ErrorCode.ReadWriteDenied;
}
else
{
e = new ValueEventArgs(settings, obj, attributeIndex, selector, parameters);
server.NotifyRead(new ValueEventArgs[] { e });
object value;
if (e.Handled)
{
value = e.Value;
}
else
{
value = (obj as IGXDLMSBase).GetValue(settings, e);
}
GXDLMS.AppendData(settings, obj, attributeIndex, bb, value);
status = e.Error;
}
}
GXDLMS.GetLNPdu(new GXDLMSLNParameters(settings, Command.GetResponse, 1, null, bb, (byte)status), replyData);
if (settings.Count != settings.Index || bb.Size != bb.Position)
{
server.transaction = new GXDLMSLongTransaction(new ValueEventArgs[] { e }, Command.GetRequest, bb);
}
}
/// <summary>
/// Handle read request.
/// </summary>
/// <param name="settings">DLMS settings.</param>
/// <param name="server">DLMS server.</param>
/// <param name="data">Received data.</param>
public static void HandleReadRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
GXByteBuffer bb = new GXByteBuffer();
int cnt = 0xFF;
byte type = 0;
List<ValueEventArgs> list = new List<ValueEventArgs>();
//If get next frame.
if (xml == null && data.Size == 0)
{
if (server.transaction != null)
{
return;
}
bb.Set(replyData);
replyData.Clear();
foreach (ValueEventArgs it in server.transaction.targets)
{
list.Add(it);
}
}
else
{
cnt = GXCommon.GetObjectCount(data);
List<ValueEventArgs> reads = new List<ValueEventArgs>();
List<ValueEventArgs> actions = new List<ValueEventArgs>();
if (xml != null)
{
xml.AppendStartTag(Command.ReadRequest, "Qty", xml.IntegerToHex(cnt, 2));
}
for (int pos = 0; pos != cnt; ++pos)
{
type = data.GetUInt8();
if (type == (byte)VariableAccessSpecification.VariableName ||
type == (byte)VariableAccessSpecification.ParameterisedAccess)
{
HandleRead(settings, server, type, data, list, reads, actions, replyData, xml);
}
else if (type == (byte)VariableAccessSpecification.BlockNumberAccess)
{
HandleReadBlockNumberAccess(settings, server, data, replyData, xml);
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
}
return;
}
else if (type == (byte)VariableAccessSpecification.ReadDataBlockAccess)
{
HandleReadDataBlockAccess(settings, server, Command.ReadResponse, data, cnt, replyData, xml);
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
}
return;
}
else
{
ReturnSNError(settings, server, Command.ReadResponse, ErrorCode.ReadWriteDenied, replyData);
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
}
return;
}
}
if (reads.Count != 0)
{
server.NotifyRead(reads.ToArray());
}
if (actions.Count != 0)
{
server.NotifyAction(actions.ToArray());
}
}
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
return;
}
byte requestType = (byte)GetReadData(settings, list.ToArray(), bb);
GXDLMSSNParameters p = new GXDLMSSNParameters(settings, Command.ReadResponse, list.Count, requestType, null, bb);
GXDLMS.GetSNPdu(p, replyData);
if (server.transaction == null && (bb.Size != bb.Position || settings.Count != settings.Index))
{
List<ValueEventArgs> reads = new List<ValueEventArgs>();
foreach (var it in list)
{
reads.Add(it);
}
server.transaction = new GXDLMSLongTransaction(reads.ToArray(), Command.ReadRequest, bb);
}
else if (server.transaction != null)
{
replyData.Set(bb);
return;
}
}
/// <summary>
/// Handle read Block in blocks.
/// </summary>
/// <param name="data">Received data.</param>
private static void HandleReadBlockNumberAccess(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
UInt16 blockNumber = data.GetUInt16();
if (xml != null)
{
xml.AppendStartTag(Command.ReadRequest, VariableAccessSpecification.BlockNumberAccess);
xml.AppendLine("<BlockNumber Value=\"" + xml.IntegerToHex(blockNumber, 4) + "\" />");
xml.AppendEndTag(Command.ReadRequest, VariableAccessSpecification.BlockNumberAccess);
return;
}
if (blockNumber != settings.BlockIndex)
{
GXByteBuffer bb = new GXByteBuffer();
Debug.WriteLine("handleReadRequest failed. Invalid block number. " + settings.BlockIndex + "/" + blockNumber);
bb.SetUInt8(ErrorCode.DataBlockNumberInvalid);
GXDLMS.GetSNPdu(new GXDLMSSNParameters(settings, Command.ReadResponse, 1, (byte)SingleReadResponse.DataAccessError, bb, null), replyData);
settings.ResetBlockIndex();
return;
}
if (settings.Index != settings.Count && server.transaction.data.Size < settings.MaxPduSize)
{
List<ValueEventArgs> reads = new List<ValueEventArgs>();
List<ValueEventArgs> actions = new List<ValueEventArgs>();
foreach (ValueEventArgs it in server.transaction.targets)
{
if (it.action)
{
actions.Add(it);
}
else
{
reads.Add(it);
}
}
if (reads.Count != 0)
{
server.NotifyRead(reads.ToArray());
}
if (actions.Count != 0)
{
server.NotifyAction(actions.ToArray());
}
GetReadData(settings, server.transaction.targets, server.transaction.data);
}
settings.IncreaseBlockIndex();
GXDLMSSNParameters p = new GXDLMSSNParameters(settings, Command.ReadResponse, 1,
(byte)SingleReadResponse.DataBlockResult, null, server.transaction.data);
p.multipleBlocks = true;
GXDLMS.GetSNPdu(p, replyData);
//If all data is sent.
if (server.transaction.data.Size == server.transaction.data.Position)
{
server.transaction = null;
settings.ResetBlockIndex();
}
else
{
server.transaction.data.Trim();
}
}
