/// <summary>
/// Encodes just the DataSetMetaData message to the given Stream.
/// NetworkMessage Header and DiscoveryResponse are not encoded.
/// </summary>
/// <param name="outputStream"></param>
public void EncodeChunk(Stream outputStream)
{
DiscoveryResponseHeader.Encode(outputStream);
// DataSetWriterID
BaseType.WriteToStream(outputStream, BitConverter.GetBytes(DataSetWriterID));
EncodeDataTypeSchemaHeaderStructure(outputStream);
// Name
Name.Encode(outputStream);
// Description
Description.Encode(outputStream);
// Fields
int fieldLength = -1;
if (FieldMetaDataList != null)
{
fieldLength = FieldMetaDataList.Count;
}
BaseType.WriteToStream(outputStream, BitConverter.GetBytes(fieldLength));
for (int i = 0; i < fieldLength; i++)
{
// ReSharper disable once PossibleNullReferenceException
FieldMetaData field = FieldMetaDataList[i] ?? new FieldMetaData(Options);
field.Encode(outputStream);
}
// DataSet Class ID
BaseType.WriteToStream(outputStream, DataSetClassID.ToByteArray());
// Version
ConfigurationVersion.Encode(outputStream);
// Status Code
BaseType.WriteToStream(outputStream, BitConverter.GetBytes(StatusCode));
}
/// <summary>
/// Encodes just the common part of the DataSet Message (e.g. Flags 1 & Flags 2,
/// Configuration Version and Message Sequence Number.
/// </summary>
/// <param name="outputStream"></param>
public virtual void EncodeChunk(Stream outputStream)
{
// 3. DataSetFlags1
outputStream.WriteByte(Flags1.RawValue);
// 4. DataSetFlags2
if (Flags1.Flags1.HasFlag(DataSetFlags1Enum.DataSetFlags2Enabled))
{
outputStream.WriteByte(Flags2.RawValue);
}
// 5. Message Sequence Number
if (Flags1.Flags1.HasFlag(DataSetFlags1Enum.DataSetSequenceNumberEnabled))
{
BaseType.WriteToStream(outputStream, BitConverter.GetBytes(DataSetMessageSequenceNumber));
}
// evaluate the following options only if DataSetFlags2 field is provided
if (Flags1.Flags1.HasFlag(DataSetFlags1Enum.DataSetFlags2Enabled))
{
// Timestamp
if (Flags2.Flags2.HasFlag(DataSetFlags2Enum.TimeStampEnabled))
{
BaseType.WriteToStream(outputStream, BitConverter.GetBytes(Convert.ToInt64(Timestamp.ToFileTimeUtc())));
}
}
// 6. Configuration Version
if (Flags1.Flags1.HasFlag(DataSetFlags1Enum.ConfigurationVersionMajorVersion) ||
Flags1.Flags1.HasFlag(DataSetFlags1Enum.ConfigurationVersionMinorVersion))
{
// we always send both, minor and major version; ensure that both
// bits are set in DataSetFlags1
ConfigurationVersion.Encode(outputStream);
}
}
