/// <summary>
/// Handle receive completion
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="header">SMUX header</param>
public void HandleReceiveComplete(SNIPacket packet, SNISMUXHeader header)
{
lock (this)
{
if (_sendHighwater != header.highwater)
{
HandleAck(header.highwater);
}
lock (_receivedPacketQueue)
{
if (_asyncReceives == 0)
{
_receivedPacketQueue.Enqueue(packet);
_packetEvent.Set();
return;
}
_asyncReceives--;
Debug.Assert(_callbackObject != null);
#if MANAGED_SNI // Causes build issue if uncommented in unmanaged version
((TdsParserStateObject)_callbackObject).ReadAsyncCallback(packet, 0);
#endif
}
}
lock (this)
{
_receiveHighwater++;
}
SendAckIfNecessary();
}
/// <summary>
/// Handle receive completion
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="header">SMUX header</param>
public void HandleReceiveComplete(SNIPacket packet, SNISMUXHeader header)
{
lock (this)
{
if (_sendHighwater != header.highwater)
{
HandleAck(header.highwater);
}
lock (_receivedPacketQueue)
{
if (_asyncReceives == 0)
{
_receivedPacketQueue.Enqueue(packet);
_packetEvent.Set();
return;
}
_asyncReceives--;
Debug.Assert(_callbackObject != null);
((TdsParserStateObject)_callbackObject).ReadAsyncCallback(packet, 0);
}
}
lock (this)
{
_receiveHighwater++;
}
SendAckIfNecessary();
}
/// <summary>
/// Handle receive completion
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="header">SMUX header</param>
public void HandleReceiveComplete(SNIPacket packet, SNISMUXHeader header)
{
lock (this)
{
if (_sendHighwater != header.highwater)
{
HandleAck(header.highwater);
}
lock (_receivedPacketQueue)
{
// The error callback takes care of completing all pending receives
if (_connectionError == null)
{
if (_asyncReceives == 0)
{
_receivedPacketQueue.Enqueue(packet);
_packetEvent.Set();
return;
}
_asyncReceives--;
}
}
}
_callbackObject.ReadAsyncCallback(packet, null);
lock (this)
{
_receiveHighwater++;
}
SendAckIfNecessary();
}
/// <summary>
/// Process a receive completion
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="sniErrorCode">SNI error code</param>
public void HandleReceiveComplete(SNIPacket packet, uint sniErrorCode)
{
SNISMUXHeader currentHeader = null;
SNIPacket currentPacket = null;
SNIMarsHandle currentSession = null;
if (sniErrorCode != TdsEnums.SNI_SUCCESS)
{
lock (this)
{
HandleReceiveError();
return;
}
}
while (true)
{
lock (this)
{
if (_currentHeaderByteCount != SNISMUXHeader.HEADER_LENGTH)
{
currentHeader = null;
currentPacket = null;
currentSession = null;
while (_currentHeaderByteCount != SNISMUXHeader.HEADER_LENGTH)
{
int bytesTaken = packet.TakeData(_headerBytes, _currentHeaderByteCount, SNISMUXHeader.HEADER_LENGTH - _currentHeaderByteCount);
_currentHeaderByteCount += bytesTaken;
if (bytesTaken == 0)
{
sniErrorCode = ReceiveAsync(ref packet);
if (sniErrorCode == TdsEnums.SNI_SUCCESS_IO_PENDING)
{
return;
}
HandleReceiveError();
return;
}
}
_currentHeader = new SNISMUXHeader()
{
SMID = _headerBytes[0],
flags = _headerBytes[1],
sessionId = BitConverter.ToUInt16(_headerBytes, 2),
length = BitConverter.ToUInt32(_headerBytes, 4) - SNISMUXHeader.HEADER_LENGTH,
sequenceNumber = BitConverter.ToUInt32(_headerBytes, 8),
highwater = BitConverter.ToUInt32(_headerBytes, 12)
};
_dataBytesLeft = (int)_currentHeader.length;
_currentPacket = new SNIPacket(null);
_currentPacket.Allocate((int)_currentHeader.length);
}
currentHeader = _currentHeader;
currentPacket = _currentPacket;
if (_currentHeader.flags == (byte)SNISMUXFlags.SMUX_DATA)
{
if (_dataBytesLeft > 0)
{
int length = packet.TakeData(_currentPacket, _dataBytesLeft);
_dataBytesLeft -= length;
if (_dataBytesLeft > 0)
{
sniErrorCode = ReceiveAsync(ref packet);
if (sniErrorCode == TdsEnums.SNI_SUCCESS_IO_PENDING)
{
return;
}
HandleReceiveError();
return;
}
}
}
_currentHeaderByteCount = 0;
if (!_sessions.ContainsKey(_currentHeader.sessionId))
{
SNILoadHandle.SingletonInstance.LastError = new SNIError(SNIProviders.SMUX_PROV, 0, SNICommon.InvalidParameterError, string.Empty);
HandleReceiveError();
_lowerHandle.Dispose();
_lowerHandle = null;
return;
}
if (_currentHeader.flags == (byte)SNISMUXFlags.SMUX_FIN)
{
_sessions.Remove(_currentHeader.sessionId);
}
else
{
currentSession = _sessions[_currentHeader.sessionId];
}
}
if (currentHeader.flags == (byte)SNISMUXFlags.SMUX_DATA)
{
currentSession.HandleReceiveComplete(currentPacket, currentHeader);
}
if (_currentHeader.flags == (byte)SNISMUXFlags.SMUX_ACK)
{
try
{
currentSession.HandleAck(currentHeader.highwater);
}
catch (Exception e)
{
SNICommon.ReportSNIError(SNIProviders.SMUX_PROV, SNICommon.InternalExceptionError, e);
}
}
lock (this)
{
if (packet.DataLeft == 0)
{
sniErrorCode = ReceiveAsync(ref packet);
if (sniErrorCode == TdsEnums.SNI_SUCCESS_IO_PENDING)
{
return;
}
HandleReceiveError();
return;
}
}
}
}
/// <summary>
/// Process a receive completion
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="sniErrorCode">SNI error code</param>
public void HandleReceiveComplete(SNIPacket packet, uint sniErrorCode)
{
SNISMUXHeader currentHeader = null;
SNIPacket currentPacket = null;
SNIMarsHandle currentSession = null;
if (sniErrorCode != TdsEnums.SNI_SUCCESS)
{
lock (this)
{
HandleReceiveError();
return;
}
}
while (true)
{
lock (this)
{
if (_currentHeaderByteCount != SNISMUXHeader.HEADER_LENGTH)
{
currentHeader = null;
currentPacket = null;
currentSession = null;
while (_currentHeaderByteCount != SNISMUXHeader.HEADER_LENGTH)
{
int bytesTaken = packet.TakeData(_headerBytes, _currentHeaderByteCount, SNISMUXHeader.HEADER_LENGTH - _currentHeaderByteCount);
_currentHeaderByteCount += bytesTaken;
if (bytesTaken == 0)
{
sniErrorCode = ReceiveAsync(ref packet);
if (sniErrorCode == TdsEnums.SNI_SUCCESS_IO_PENDING)
{
return;
}
HandleReceiveError();
return;
}
}
_currentHeader = new SNISMUXHeader()
{
SMID = _headerBytes[0],
flags = _headerBytes[1],
sessionId = BitConverter.ToUInt16(_headerBytes, 2),
length = BitConverter.ToUInt32(_headerBytes, 4) - SNISMUXHeader.HEADER_LENGTH,
sequenceNumber = BitConverter.ToUInt32(_headerBytes, 8),
highwater = BitConverter.ToUInt32(_headerBytes, 12)
};
_dataBytesLeft = (int)_currentHeader.length;
_currentPacket = new SNIPacket(null);
_currentPacket.Allocate((int)_currentHeader.length);
}
currentHeader = _currentHeader;
currentPacket = _currentPacket;
if (_currentHeader.flags == (byte)SNISMUXFlags.SMUX_DATA)
{
if (_dataBytesLeft > 0)
{
int length = packet.TakeData(_currentPacket, _dataBytesLeft);
_dataBytesLeft -= length;
if (_dataBytesLeft > 0)
{
sniErrorCode = ReceiveAsync(ref packet);
if (sniErrorCode == TdsEnums.SNI_SUCCESS_IO_PENDING)
{
return;
}
HandleReceiveError();
return;
}
}
}
_currentHeaderByteCount = 0;
if (!_sessions.ContainsKey(_currentHeader.sessionId))
{
SNILoadHandle.SingletonInstance.LastError = new SNIError(SNIProviders.SMUX_PROV, 0, SNICommon.InvalidParameterError, string.Empty);
HandleReceiveError();
_lowerHandle.Dispose();
_lowerHandle = null;
return;
}
if (_currentHeader.flags == (byte)SNISMUXFlags.SMUX_FIN)
{
_sessions.Remove(_currentHeader.sessionId);
}
else
{
currentSession = _sessions[_currentHeader.sessionId];
}
}
if (currentHeader.flags == (byte)SNISMUXFlags.SMUX_DATA)
{
currentSession.HandleReceiveComplete(currentPacket, currentHeader);
}
if (_currentHeader.flags == (byte)SNISMUXFlags.SMUX_ACK)
{
try
{
currentSession.HandleAck(currentHeader.highwater);
}
catch (Exception e)
{
SNICommon.ReportSNIError(SNIProviders.SMUX_PROV, SNICommon.InternalExceptionError, e);
}
}
lock (this)
{
if (packet.DataLeft == 0)
{
sniErrorCode = ReceiveAsync(ref packet);
if (sniErrorCode == TdsEnums.SNI_SUCCESS_IO_PENDING)
{
return;
}
HandleReceiveError();
return;
}
}
}
}
/// <summary>
/// Handle receive completion
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="header">SMUX header</param>
public void HandleReceiveComplete(SNIPacket packet, SNISMUXHeader header)
{
lock (this)
{
if (_sendHighwater != header.highwater)
{
HandleAck(header.highwater);
}
lock (_receivedPacketQueue)
{
if (_asyncReceives == 0)
{
_receivedPacketQueue.Enqueue(packet);
_packetEvent.Set();
return;
}
_asyncReceives--;
Debug.Assert(_callbackObject != null);
#if MANAGED_SNI // Causes build issue if uncommented in unmanaged version
((TdsParserStateObject)_callbackObject).ReadAsyncCallback(packet, 0);
#endif
}
}
lock (this)
{
_receiveHighwater++;
}
SendAckIfNecessary();
}
/// <summary>
/// Handle receive completion
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="header">SMUX header</param>
public void HandleReceiveComplete(SNIPacket packet, SNISMUXHeader header)
{
lock (this)
{
if (_sendHighwater != header.highwater)
{
HandleAck(header.highwater);
}
lock (_receivedPacketQueue)
{
if (_asyncReceives == 0)
{
_receivedPacketQueue.Enqueue(packet);
_packetEvent.Set();
return;
}
_asyncReceives--;
Debug.Assert(_callbackObject != null);
((TdsParserStateObject)_callbackObject).ReadAsyncCallback(packet, 0);
}
}
lock (this)
{
_receiveHighwater++;
}
SendAckIfNecessary();
}
/// <summary>
/// Process a receive completion
/// </summary>
public void HandleReceiveComplete(SNIPacket packet, SNIError sniError)
{
SNISMUXHeader currentHeader = null;
SNIPacket currentPacket = null;
SNIMarsHandle currentSession = null;
if (sniError != null)
{
lock (this)
{
HandleReceiveError(sniError);
return;
}
}
int packetOffset = 0;
while (true)
{
lock (this)
{
bool sessionRemoved = false;
if (_currentHeaderByteCount != SNISMUXHeader.HEADER_LENGTH)
{
currentHeader = null;
currentPacket = null;
currentSession = null;
while (_currentHeaderByteCount != SNISMUXHeader.HEADER_LENGTH)
{
int bytesTaken = packet.TakeData(packetOffset, _headerBytes, _currentHeaderByteCount, SNISMUXHeader.HEADER_LENGTH - _currentHeaderByteCount);
packetOffset += bytesTaken;
_currentHeaderByteCount += bytesTaken;
if (bytesTaken == 0)
{
packetOffset = 0;
ReceiveAsync(ref packet);
return;
}
}
_currentHeader = new SNISMUXHeader()
{
SMID = _headerBytes[0],
flags = _headerBytes[1],
sessionId = BitConverter.ToUInt16(_headerBytes, 2),
length = BitConverter.ToUInt32(_headerBytes, 4) - SNISMUXHeader.HEADER_LENGTH,
sequenceNumber = BitConverter.ToUInt32(_headerBytes, 8),
highwater = BitConverter.ToUInt32(_headerBytes, 12)
};
_dataBytesLeft = (int)_currentHeader.length;
_currentPacket = new SNIPacket();
_currentPacket.Allocate((int)_currentHeader.length);
}
currentHeader = _currentHeader;
currentPacket = _currentPacket;
if (_currentHeader.flags == (byte)SNISMUXFlags.SMUX_DATA)
{
if (_dataBytesLeft > 0)
{
int length = packet.TakeData(packetOffset, _currentPacket, _dataBytesLeft);
packetOffset += length;
_dataBytesLeft -= length;
if (_dataBytesLeft > 0)
{
packetOffset = 0;
ReceiveAsync(ref packet);
return;
}
}
}
_currentHeaderByteCount = 0;
if (!sessionRemoved && !_sessions.TryGetValue(_currentHeader.sessionId, out currentSession))
{
sniError = new SNIError(SNIProviders.TCP_PROV, 0, 0, "Packet for unknown MARS session received");
HandleReceiveError(sniError);
return;
}
if (_currentHeader.flags == (byte)SNISMUXFlags.SMUX_FIN)
{
RemoveSession(_currentHeader.sessionId);
sessionRemoved = true;
}
else
{
currentSession = _sessions[_currentHeader.sessionId];
}
}
if (currentSession != null)
{
if (currentHeader.flags == (byte)SNISMUXFlags.SMUX_DATA)
{
currentSession.HandleReceiveComplete(currentPacket, currentHeader);
}
else if (_currentHeader.flags == (byte)SNISMUXFlags.SMUX_ACK)
{
currentSession.HandleAck(currentHeader.highwater);
}
}
lock (this)
{
if (packet.Length - packetOffset == 0)
{
packetOffset = 0;
ReceiveAsync(ref packet);
return;
}
}
}
}
