/// <summary>
/// Decode MCS Connect Initial PDU with GCC Conference Create Initial
/// </summary>
/// <param name="data">data to be parsed</param>
/// <returns>Decoded MCS Connect Initial PDU with GCC Conference Create Initial</returns>
public StackPacket DecodeMcsConnectInitialPDU(byte[] data)
{
// initialize
int currentIndex = 0;
Client_MCS_Connect_Initial_Pdu_with_GCC_Conference_Create_Request pdu =
new Client_MCS_Connect_Initial_Pdu_with_GCC_Conference_Create_Request();
// McsConnectResponse: TpktHeader
pdu.tpktHeader = ParseTpktHeader(data, ref currentIndex);
// McsConnectResponse: X224
pdu.x224Data = ParseX224Data(data, ref currentIndex);
// T125 Data: decode McsConnectResponse
int t125DataLength = data.Length - currentIndex;
if (t125DataLength <= 0)
{
throw new FormatException(ConstValue.ERROR_MESSAGE_DATA_INDEX_OUT_OF_RANGE);
}
byte[] t125Data = new byte[t125DataLength];
Array.Copy(data, currentIndex, t125Data, 0, t125Data.Length);
Connect_Initial mcsConnectInitial = new Connect_Initial();
Asn1DecodingBuffer decodeBuffer = new Asn1DecodingBuffer(t125Data);
mcsConnectInitial.BerDecode(decodeBuffer);
// McsConnectResponse:result
pdu.mcsCi.targetParameters.maxChannelIds = (long)mcsConnectInitial.targetParameters.maxChannelIds.Value;
pdu.mcsCi.targetParameters.maxHeight = (long)mcsConnectInitial.targetParameters.maxHeight.Value;
pdu.mcsCi.targetParameters.maxMcsPduSize = (long)mcsConnectInitial.targetParameters.maxMCSPDUsize.Value;
pdu.mcsCi.targetParameters.maxTokenIds = (long)mcsConnectInitial.targetParameters.maxTokenIds.Value;
pdu.mcsCi.targetParameters.maxUserIds = (long)mcsConnectInitial.targetParameters.maxUserIds.Value;
pdu.mcsCi.targetParameters.minThroughput = (long)mcsConnectInitial.targetParameters.minThroughput.Value;
pdu.mcsCi.targetParameters.numPriorities = (long)mcsConnectInitial.targetParameters.numPriorities.Value;
pdu.mcsCi.targetParameters.protocolVersion = (long)mcsConnectInitial.targetParameters.protocolVersion.Value;
pdu.mcsCi.minimumParameters.maxChannelIds = (long)mcsConnectInitial.minimumParameters.maxChannelIds.Value;
pdu.mcsCi.minimumParameters.maxHeight = (long)mcsConnectInitial.minimumParameters.maxHeight.Value;
pdu.mcsCi.minimumParameters.maxMcsPduSize = (long)mcsConnectInitial.minimumParameters.maxMCSPDUsize.Value;
pdu.mcsCi.minimumParameters.maxTokenIds = (long)mcsConnectInitial.minimumParameters.maxTokenIds.Value;
pdu.mcsCi.minimumParameters.maxUserIds = (long)mcsConnectInitial.minimumParameters.maxUserIds.Value;
pdu.mcsCi.minimumParameters.minThroughput = (long)mcsConnectInitial.minimumParameters.minThroughput.Value;
pdu.mcsCi.minimumParameters.numPriorities = (long)mcsConnectInitial.minimumParameters.numPriorities.Value;
pdu.mcsCi.minimumParameters.protocolVersion = (long)mcsConnectInitial.minimumParameters.protocolVersion.Value;
pdu.mcsCi.maximumParameters.maxChannelIds = (long)mcsConnectInitial.maximumParameters.maxChannelIds.Value;
pdu.mcsCi.maximumParameters.maxHeight = (long)mcsConnectInitial.maximumParameters.maxHeight.Value;
pdu.mcsCi.maximumParameters.maxMcsPduSize = (long)mcsConnectInitial.maximumParameters.maxMCSPDUsize.Value;
pdu.mcsCi.maximumParameters.maxTokenIds = (long)mcsConnectInitial.maximumParameters.maxTokenIds.Value;
pdu.mcsCi.maximumParameters.maxUserIds = (long)mcsConnectInitial.maximumParameters.maxUserIds.Value;
pdu.mcsCi.maximumParameters.minThroughput = (long)mcsConnectInitial.maximumParameters.minThroughput.Value;
pdu.mcsCi.maximumParameters.numPriorities = (long)mcsConnectInitial.maximumParameters.numPriorities.Value;
pdu.mcsCi.maximumParameters.protocolVersion = (long)mcsConnectInitial.maximumParameters.protocolVersion.Value;
// T125 User Data: get McsConnectResponse's user data
//byte[] userData = new byte[mcsConnectInitial.userData.Length];
//Stream mscInput = mcsConnectInitial.userData.toInputStream();
//mscInput.Read(userData, 0, userData.Length);
byte[] userData = mcsConnectInitial.userData.ByteArrayValue;
// T125 User Data: decode McsConnectResponse's user data
Asn1DecodingBuffer connectDataBuffer = new Asn1DecodingBuffer(userData);
ConnectData connectData = new ConnectData();
connectData.PerDecode(connectDataBuffer);
// Gcc Data: get Gcc data
int gccDataLength = userData.Length - ConstValue.GCC_CCI_DATA_OFFSET;
if (gccDataLength <= 0)
{
throw new FormatException(ConstValue.ERROR_MESSAGE_DATA_INDEX_OUT_OF_RANGE);
}
byte[] gccData = new byte[gccDataLength];
Array.Copy(userData, ConstValue.GCC_CCI_DATA_OFFSET, gccData, 0, gccData.Length);
// Gcc Data: decode Gcc data
ConnectGCCPDU gccPdu = new ConnectGCCPDU();
Asn1DecodingBuffer gccPduBuffer = new Asn1DecodingBuffer(gccData);
gccPdu.PerDecode(gccPduBuffer);
// McsConnectResponse: H221Key
ConferenceCreateRequest conferenceRequest = (ConferenceCreateRequest)gccPdu.GetData();
H221NonStandardIdentifier identifier =
(H221NonStandardIdentifier)conferenceRequest.userData.Elements[0].key.GetData();
pdu.mcsCi.gccPdu.h221Key = Encoding.ASCII.GetString(identifier.ByteArrayValue);
// Gcc User Data: get Gcc user data
byte[] gccUserData = conferenceRequest.userData.Elements[0].value.ByteArrayValue;
// Reset current index
currentIndex = 0;
while (currentIndex < gccUserData.Length)
{
// Peek data type
int tempIndex = currentIndex;
int orgIndex = currentIndex;
TS_UD_HEADER_type_Values type =
(TS_UD_HEADER_type_Values)ParseUInt16(gccUserData, ref tempIndex, false);
ushort userDataLength = ParseUInt16(gccUserData, ref tempIndex, false);
// Parse data by type
switch (type)
{
case TS_UD_HEADER_type_Values.CS_CORE:
pdu.mcsCi.gccPdu.clientCoreData = ParseTsUdCsCore(gccUserData, ref currentIndex, userDataLength);
break;
case TS_UD_HEADER_type_Values.CS_NET:
pdu.mcsCi.gccPdu.clientNetworkData = ParseTsUdCsNet(gccUserData, ref currentIndex);
break;
case TS_UD_HEADER_type_Values.CS_SECURITY:
pdu.mcsCi.gccPdu.clientSecurityData = ParseTsUdCsSec(gccUserData, ref currentIndex);
break;
case TS_UD_HEADER_type_Values.CS_CLUSTER:
pdu.mcsCi.gccPdu.clientClusterData = ParseTsUdCsCluster(gccUserData, ref currentIndex);
break;
case TS_UD_HEADER_type_Values.CS_MONITOR:
pdu.mcsCi.gccPdu.clientMonitorData = ParseTsUdCsMon(gccUserData, ref currentIndex);
break;
case TS_UD_HEADER_type_Values.CS_MCS_MSGCHANNEL:
pdu.mcsCi.gccPdu.clientMessageChannelData = ParseTsUdCsMcsMsgChannel(gccUserData, ref currentIndex);
break;
case TS_UD_HEADER_type_Values.CS_MULTITRANSPORT:
pdu.mcsCi.gccPdu.clientMultitransportChannelData = ParseTsUdCsMultiTransport(gccUserData, ref currentIndex);
break;
case TS_UD_HEADER_type_Values.CS_MONITOR_EX:
pdu.mcsCi.gccPdu.clientMonitorExtendedData = ParseTsUdCsMonitorEX(gccUserData, ref currentIndex);
break;
default:
break;
//throw new FormatException(ConstValue.ERROR_MESSAGE_ENUM_UNRECOGNIZED);
}
currentIndex = orgIndex + userDataLength;
}
// Check if data length exceeded expectation
VerifyDataLength(gccUserData.Length, currentIndex, ConstValue.ERROR_MESSAGE_DATA_LENGTH_EXCEEDED);
return pdu;
}
/// <summary>
/// Encode this structure into byte array.
/// </summary>
/// <returns>The byte array of the structure.</returns>
public override byte[] ToBytes()
{
List<byte> totalBuffer = new List<byte>();
RdpbcgrEncoder.EncodeStructure(totalBuffer, tpktHeader);
RdpbcgrEncoder.EncodeStructure(totalBuffer, x224Data);
if (mcsCi != null)
{
byte[] gccData = EncodeGccData(mcsCi.gccPdu);
#region Filling MCS Connect Initial PDU
Connect_Initial connectInitial = new Connect_Initial();
connectInitial.calledDomainSelector = new Asn1OctetString(mcsCi.calledDomainSelector);
connectInitial.callingDomainSelector = new Asn1OctetString(mcsCi.callingDomainSelector);
connectInitial.upwardFlag = new Asn1Boolean(mcsCi.upwardFlag);
connectInitial.targetParameters = new DomainParameters(new Asn1Integer(mcsCi.targetParameters.maxChannelIds),
new Asn1Integer(mcsCi.targetParameters.maxUserIds),
new Asn1Integer(mcsCi.targetParameters.maxTokenIds),
new Asn1Integer(mcsCi.targetParameters.numPriorities),
new Asn1Integer(mcsCi.targetParameters.minThroughput),
new Asn1Integer(mcsCi.targetParameters.maxHeight),
new Asn1Integer(mcsCi.targetParameters.maxMcsPduSize),
new Asn1Integer(mcsCi.targetParameters.protocolVersion));
connectInitial.minimumParameters = new DomainParameters(new Asn1Integer(mcsCi.minimumParameters.maxChannelIds),
new Asn1Integer(mcsCi.minimumParameters.maxUserIds),
new Asn1Integer(mcsCi.minimumParameters.maxTokenIds),
new Asn1Integer(mcsCi.minimumParameters.numPriorities),
new Asn1Integer(mcsCi.minimumParameters.minThroughput),
new Asn1Integer(mcsCi.minimumParameters.maxHeight),
new Asn1Integer(mcsCi.minimumParameters.maxMcsPduSize),
new Asn1Integer(mcsCi.minimumParameters.protocolVersion));
connectInitial.maximumParameters = new DomainParameters(new Asn1Integer(mcsCi.maximumParameters.maxChannelIds),
new Asn1Integer(mcsCi.maximumParameters.maxUserIds),
new Asn1Integer(mcsCi.maximumParameters.maxTokenIds),
new Asn1Integer(mcsCi.maximumParameters.numPriorities),
new Asn1Integer(mcsCi.maximumParameters.minThroughput),
new Asn1Integer(mcsCi.maximumParameters.maxHeight),
new Asn1Integer(mcsCi.maximumParameters.maxMcsPduSize),
new Asn1Integer(mcsCi.maximumParameters.protocolVersion));
connectInitial.userData = new Asn1OctetString(gccData);
#endregion Filling MCS Connect Initial PDU
#region Encode MCS Connect Initial PDU
Asn1BerEncodingBuffer berEncodeBuffer = new Asn1BerEncodingBuffer();
connectInitial.BerEncode(berEncodeBuffer);
#endregion MCS Connect Initial PDU
if (berEncodeBuffer.Data != null)
{
RdpbcgrEncoder.EncodeBytes(totalBuffer, berEncodeBuffer.Data);
}
}
return RdpbcgrUtility.ToBytes(totalBuffer);
}
