本文整理汇总了C#中SNIPacket.Allocate方法的典型用法代码示例。如果您正苦于以下问题：C# SNIPacket.Allocate方法的具体用法？C# SNIPacket.Allocate怎么用？C# SNIPacket.Allocate使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SNIPacket的用法示例。
在下文中一共展示了SNIPacket.Allocate方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: HandleReceiveComplete
/// <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;
}
//.........这里部分代码省略.........
示例2: ReceiveAsync
/// <summary>
/// Receive a packet asynchronously
/// </summary>
/// <param name="packet">SNI packet</param>
/// <returns>SNI error code</returns>
public override uint ReceiveAsync(ref SNIPacket packet)
{
lock (this)
{
packet = new SNIPacket(null);
packet.Allocate(_bufferSize);
try
{
packet.ReadFromStreamAsync(_stream, _receiveCallback);
return TdsEnums.SNI_SUCCESS_IO_PENDING;
}
catch (ObjectDisposedException ode)
{
return ReportErrorAndReleasePacket(packet, ode);
}
catch (SocketException se)
{
return ReportErrorAndReleasePacket(packet, se);
}
catch (IOException ioe)
{
return ReportErrorAndReleasePacket(packet, ioe);
}
}
}示例3: Receive
/// <summary>
/// Receive a packet synchronously
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="timeoutInMilliseconds">Timeout in Milliseconds</param>
/// <returns>SNI error code</returns>
public override uint Receive(out SNIPacket packet, int timeoutInMilliseconds)
{
lock (this)
{
packet = null;
try
{
if (timeoutInMilliseconds > 0)
{
_socket.ReceiveTimeout = timeoutInMilliseconds;
}
else if (timeoutInMilliseconds == -1)
{ // SqlCient internally represents infinite timeout by -1, and for TcpClient this is translated to a timeout of 0
_socket.ReceiveTimeout = 0;
}
else
{
// otherwise it is timeout for 0 or less than -1
ReportTcpSNIError(0, SNICommon.ConnTimeoutError, string.Empty);
return TdsEnums.SNI_WAIT_TIMEOUT;
}
packet = new SNIPacket(null);
packet.Allocate(_bufferSize);
packet.ReadFromStream(_stream);
if (packet.Length == 0)
{
return ReportErrorAndReleasePacket(packet, 0, SNICommon.ConnTerminatedError, string.Empty);
}
return TdsEnums.SNI_SUCCESS;
}
catch (ObjectDisposedException ode)
{
return ReportErrorAndReleasePacket(packet, ode);
}
catch (SocketException se)
{
return ReportErrorAndReleasePacket(packet, se);
}
catch (IOException ioe)
{
uint errorCode = ReportErrorAndReleasePacket(packet, ioe);
if (ioe.InnerException is SocketException && ((SocketException)(ioe.InnerException)).SocketErrorCode == SocketError.TimedOut)
{
errorCode = TdsEnums.SNI_WAIT_TIMEOUT;
}
return errorCode;
}
finally
{
_socket.ReceiveTimeout = 0;
}
}
}示例4: GetSMUXEncapsulatedPacket
/// <summary>
/// Generate a packet with SMUX header
/// </summary>
/// <param name="packet">SNI packet</param>
/// <returns>Encapsulated SNI packet</returns>
private SNIPacket GetSMUXEncapsulatedPacket(SNIPacket packet)
{
uint xSequenceNumber = _sequenceNumber;
byte[] headerBytes = null;
GetSMUXHeaderBytes(packet.Length, (byte)SNISMUXFlags.SMUX_DATA, ref headerBytes);
SNIPacket smuxPacket = new SNIPacket(null);
smuxPacket.Description = string.Format("({0}) SMUX packet {1}", packet.Description == null ? "" : packet.Description, xSequenceNumber);
smuxPacket.Allocate(16 + packet.Length);
smuxPacket.AppendData(headerBytes, 16);
smuxPacket.AppendPacket(packet);
return smuxPacket;
}示例5: Receive
public override uint Receive(out SNIPacket packet, int timeout)
{
lock (this)
{
packet = null;
try
{
packet = new SNIPacket(null);
packet.Allocate(_bufferSize);
packet.ReadFromStream(_stream);
if (packet.Length == 0)
{
return ReportErrorAndReleasePacket(packet, 0, SNICommon.ConnTerminatedError, string.Empty);
}
}
catch (ObjectDisposedException ode)
{
return ReportErrorAndReleasePacket(packet, ode);
}
catch (IOException ioe)
{
return ReportErrorAndReleasePacket(packet, ioe);
}
return TdsEnums.SNI_SUCCESS;
}
}示例6: Receive
/// <summary>
/// Receive a packet synchronously
/// </summary>
/// <param name="packet">SNI packet</param>
/// <param name="timeout">Timeout</param>
/// <returns>SNI error code</returns>
public override uint Receive(ref SNIPacket packet, int timeout)
{
lock (this)
{
try
{
_tcpClient.ReceiveTimeout = (timeout != 0) ? timeout : 1;
packet = new SNIPacket(null);
packet.Allocate(_bufferSize);
packet.ReadFromStream(_stream);
if (packet.Length == 0)
{
return ReportErrorAndReleasePacket(packet, "Connection was terminated");
}
return TdsEnums.SNI_SUCCESS;
}
catch (ObjectDisposedException ode)
{
return ReportErrorAndReleasePacket(packet, ode.Message);
}
catch (SocketException se)
{
return ReportErrorAndReleasePacket(packet, se.Message);
}
catch (IOException ioe)
{
uint errorCode = ReportErrorAndReleasePacket(packet, ioe.Message);
if (ioe.InnerException is SocketException && ((SocketException)(ioe.InnerException)).SocketErrorCode == SocketError.TimedOut)
{
errorCode = TdsEnums.SNI_WAIT_TIMEOUT;
}
return errorCode;
}
finally
{
_tcpClient.ReceiveTimeout = 0;
}
}
}