public byte[] CompressDataToRdp8BulkEncodedData(byte[] data, PACKET_COMPR_FLAG compressedFlag)
{
//When the length of the original uncompressed message data being sent exceeds 1,590 bytes,
//and bulk data compression of the channel data is desired, the DYNVC_DATA_FIRST_COMPRESSED (section 2.2.3.3) PDU is sent as the first data PDU.
if (compressedFlag == (PACKET_COMPR_FLAG.PACKET_COMPR_TYPE_LITE | PACKET_COMPR_FLAG.PACKET_COMPRESSED))
{
CompressFactory cpf = new CompressFactory(
(int)SEGMENT_PART_SISE.MAX_PACKET_COMPR_TYPE_RDP8_LITE_MATCH_DISTANCE,
(int)SEGMENT_PART_SISE.MAX_PACKET_COMPR_TYPE_RDP8_LITE_SEGMENT_PART_SIZE);
return(cpf.Compress(data));
}
if (compressedFlag == (PACKET_COMPR_FLAG.PACKET_COMPR_TYPE_RDP8 | PACKET_COMPR_FLAG.PACKET_COMPRESSED)
)
{
CompressFactory cpf = new CompressFactory(
(int)SEGMENT_PART_SISE.MAX_PACKET_COMPR_TYPE_RDP8_MATCH_DISTANCE,
(int)SEGMENT_PART_SISE.MAX_PACKET_COMPR_TYPE_RDP8_SEGMENT_PART_SIZE);
return(cpf.Compress(data));
}
//Otherwise, no compress
return(data);
}
public byte[] CompressDataToRdp8BulkEncodedData(byte[] data, PACKET_COMPR_FLAG compressedFlag)
{
//When the length of the original uncompressed message data being sent exceeds 1,590 bytes,
//and bulk data compression of the channel data is desired, the DYNVC_DATA_FIRST_COMPRESSED (section 2.2.3.3) PDU is sent as the first data PDU.
if (compressedFlag == (PACKET_COMPR_FLAG.PACKET_COMPR_TYPE_LITE | PACKET_COMPR_FLAG.PACKET_COMPRESSED))
{
CompressFactory cpf = new CompressFactory(
(int)SEGMENT_PART_SISE.MAX_PACKET_COMPR_TYPE_RDP8_LITE_MATCH_DISTANCE,
(int)SEGMENT_PART_SISE.MAX_PACKET_COMPR_TYPE_RDP8_LITE_SEGMENT_PART_SIZE);
return cpf.Compress(data);
}
if (compressedFlag == (PACKET_COMPR_FLAG.PACKET_COMPR_TYPE_RDP8 | PACKET_COMPR_FLAG.PACKET_COMPRESSED)
)
{
CompressFactory cpf = new CompressFactory(
(int)SEGMENT_PART_SISE.MAX_PACKET_COMPR_TYPE_RDP8_MATCH_DISTANCE,
(int)SEGMENT_PART_SISE.MAX_PACKET_COMPR_TYPE_RDP8_SEGMENT_PART_SIZE);
return cpf.Compress(data);
}
//Otherwise, no compress
return data;
}
public void SegmentAndCompressFrame(byte[] rawSvrData, byte compressFlag, uint segmentPartSize)
{
// Set descriptor type based on data length
if (rawSvrData.Length <= segmentPartSize)
{
segHeader.descriptor = DescriptorTypes.SINGLE;
segHeader.bulkData = new RDP8_BULK_ENCODED_DATA();
segHeader.bulkData.header = compressFlag;
// RDP 8.0 compression here.
if (compressFlag == ((byte)PACKET_COMPR_FLAG.PACKET_COMPR_TYPE_RDP8 | (byte)PACKET_COMPR_FLAG.PACKET_COMPRESSED))
{
CompressFactory cpf = new CompressFactory();
byte[] compressedData = cpf.Compress(rawSvrData);
segHeader.bulkData.data = compressedData;
// ETW Provider Dump message
string messageName = "DecompressedData";
ExtendedLogger.DumpMessage(messageName, RdpbcgrUtility.DumpLevel_Layer3, "Decompressed data", rawSvrData);
}
else
{
segHeader.bulkData.data = rawSvrData;
}
segHeadList.Add(segHeader);
}
else
{
segHeader.descriptor = DescriptorTypes.MULTIPART;
segHeader.uncompressedSize = (uint)(rawSvrData.Length);
int totalLength = rawSvrData.Length;
if (totalLength % segmentPartSize == 0)
{
segHeader.segmentCount = (ushort)(totalLength / segmentPartSize);
}
else
{
segHeader.segmentCount = (ushort)(totalLength / segmentPartSize + 1);
}
segHeader.segmentArray = new RDP_DATA_SEGMENT[segHeader.segmentCount];
uint baseIndex = 0;
uint cnt = 0;
while (cnt < segHeader.segmentCount)
{
Byte[] rawPartData;
if (cnt + 1 < segHeader.segmentCount)
{
rawPartData = new Byte[segmentPartSize];
Array.Copy(rawSvrData, baseIndex, rawPartData, 0, segmentPartSize);
}
else // Last segment.
{
rawPartData = new Byte[(uint)totalLength - baseIndex];
Array.Copy(rawSvrData, baseIndex, rawPartData, 0, (uint)totalLength - baseIndex);
}
segHeader.segmentArray[cnt] = new RDP_DATA_SEGMENT();
if (compressFlag == ((byte)PACKET_COMPR_FLAG.PACKET_COMPR_TYPE_RDP8 | (byte)PACKET_COMPR_FLAG.PACKET_COMPRESSED))
{
CompressFactory cpf = new CompressFactory();
byte[] compressData = cpf.Compress(rawPartData);
segHeader.segmentArray[cnt].bulkData = new RDP8_BULK_ENCODED_DATA();
segHeader.segmentArray[cnt].bulkData.header = compressFlag;
segHeader.segmentArray[cnt].bulkData.data = compressData;
segHeader.segmentArray[cnt].size = (uint)(segHeader.segmentArray[cnt].bulkData.data.Length + 1);
// ETW Provider Dump message
string messageName = "DecompressedData";
ExtendedLogger.DumpMessage(messageName, RdpbcgrUtility.DumpLevel_Layer3, "Decompressed data", rawPartData);
}
else
{
segHeader.segmentArray[cnt].bulkData = new RDP8_BULK_ENCODED_DATA();
segHeader.segmentArray[cnt].bulkData.header = compressFlag;
segHeader.segmentArray[cnt].bulkData.data = rawPartData;
segHeader.segmentArray[cnt].size = (uint)(segHeader.segmentArray[cnt].bulkData.data.Length + 1);
}
baseIndex += segmentPartSize;
cnt++;
}
// Add segmented data into segHeadList.
segHeadList.Add(segHeader);
}
}
public void SegmentAndCompressFrame(byte[] rawSvrData, byte compressFlag, uint segmentPartSize)
{
// Set descriptor type based on data length
if (rawSvrData.Length <= segmentPartSize)
{
segHeader.descriptor = DescriptorTypes.SINGLE;
segHeader.bulkData = new RDP8_BULK_ENCODED_DATA();
segHeader.bulkData.header = compressFlag;
// RDP 8.0 compression here.
if (compressFlag == ((byte)PACKET_COMPR_FLAG.PACKET_COMPR_TYPE_RDP8 | (byte)PACKET_COMPR_FLAG.PACKET_COMPRESSED))
{
CompressFactory cpf = new CompressFactory();
byte[] compressedData = cpf.Compress(rawSvrData);
segHeader.bulkData.data = compressedData;
// ETW Provider Dump message
string messageName = "DecompressedData";
ExtendedLogger.DumpMessage(messageName, RdpbcgrUtility.DumpLevel_Layer3, "Decompressed data", rawSvrData);
}
else
{
segHeader.bulkData.data = rawSvrData;
}
segHeadList.Add(segHeader);
}
else
{
segHeader.descriptor = DescriptorTypes.MULTIPART;
segHeader.uncompressedSize = (uint)(rawSvrData.Length);
int totalLength = rawSvrData.Length;
if (totalLength % segmentPartSize == 0)
{
segHeader.segmentCount = (ushort)(totalLength / segmentPartSize);
}
else
{
segHeader.segmentCount = (ushort)(totalLength / segmentPartSize + 1);
}
segHeader.segmentArray = new RDP_DATA_SEGMENT[segHeader.segmentCount];
uint baseIndex = 0;
uint cnt = 0;
while (cnt < segHeader.segmentCount)
{
Byte[] rawPartData;
if (cnt + 1 < segHeader.segmentCount)
{
rawPartData = new Byte[segmentPartSize];
Array.Copy(rawSvrData, baseIndex, rawPartData, 0, segmentPartSize);
}
else // Last segment.
{
rawPartData = new Byte[(uint)totalLength - baseIndex];
Array.Copy(rawSvrData, baseIndex, rawPartData, 0, (uint)totalLength - baseIndex);
}
segHeader.segmentArray[cnt] = new RDP_DATA_SEGMENT();
if (compressFlag == ((byte)PACKET_COMPR_FLAG.PACKET_COMPR_TYPE_RDP8 | (byte)PACKET_COMPR_FLAG.PACKET_COMPRESSED))
{
CompressFactory cpf = new CompressFactory();
byte[] compressData = cpf.Compress(rawPartData);
segHeader.segmentArray[cnt].bulkData = new RDP8_BULK_ENCODED_DATA();
segHeader.segmentArray[cnt].bulkData.header = compressFlag;
segHeader.segmentArray[cnt].bulkData.data = compressData;
segHeader.segmentArray[cnt].size = (uint)(segHeader.segmentArray[cnt].bulkData.data.Length + 1);
// ETW Provider Dump message
string messageName = "DecompressedData";
ExtendedLogger.DumpMessage(messageName, RdpbcgrUtility.DumpLevel_Layer3, "Decompressed data", rawPartData);
}
else
{
segHeader.segmentArray[cnt].bulkData = new RDP8_BULK_ENCODED_DATA();
segHeader.segmentArray[cnt].bulkData.header = compressFlag;
segHeader.segmentArray[cnt].bulkData.data = rawPartData;
segHeader.segmentArray[cnt].size = (uint)(segHeader.segmentArray[cnt].bulkData.data.Length + 1);
}
baseIndex += segmentPartSize;
cnt++;
}
// Add segmented data into segHeadList.
segHeadList.Add(segHeader);
}
}
/// <summary>
/// Process DVC Data
/// </summary>
/// <param name="pdu"></param>
private void ProcessDataPdu(DataDvcBasePdu pdu)
{
if (pdu is DataFirstDvcPdu)
{
dataFragmentManager = new DataFragmentManager();
DataFirstDvcPdu first = (DataFirstDvcPdu)pdu;
dataFragmentManager.AddFirstData(first.Length, first.Data);
}
else if (pdu is DataDvcPdu)
{
if (dataFragmentManager == null)
{
// Single data PDU which is not fragmented.
if (this.Received != null)
{
this.Received(pdu.Data, this.ChannelId);
}
return;
}
else
{
// Received a fragment.
dataFragmentManager.AppendData(pdu.Data);
}
}
else if (pdu is DataCompressedDvcPdu)
{
CompressFactory Compressor = new CompressFactory();
if (dataFragmentManager == null)
{
RDP_SEGMENTED_DATA segData = new RDP_SEGMENTED_DATA();
bool fResult = PduMarshaler.Unmarshal(pdu.Data, segData);
if (fResult)
{
if (segData.descriptor == DescriptorTypes.SINGLE)
{
byte[] rawData = Compressor.Decompress(segData.bulkData.data, segData.bulkData.header);
// Single data PDU which is not fragmented.
if (this.Received != null)
{
this.Received(rawData, this.ChannelId);
}
return;
}
}
}
else
{
// Received a fragment.
dataFragmentManager.AppendData(pdu.Data);
}
}
if (dataFragmentManager.Completed)
{
if (this.Received != null)
{
this.Received(dataFragmentManager.Data, this.ChannelId);
}
dataFragmentManager = null;
}
}