public void StartOperation(OperationType operationType, byte[] buffer)
{
InProgress = true;
Success = false;
OperationType = operationType;
if (buffer != null)
{
if (m_pinnedBuffer == null)
{
m_pinnedBuffer = new PinnedBuffer(buffer);
}
else if (m_pinnedBuffer.Buffer != buffer)
{
m_pinnedBuffer.Switch(buffer);
}
}
}
public override void Receive(byte[] buffer, int offset, int count, SocketFlags flags)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (m_receivePinnedBuffer == null)
{
m_receivePinnedBuffer = new PinnedBuffer(buffer);
}
else if (m_receivePinnedBuffer.Buffer != buffer)
{
m_receivePinnedBuffer.Switch(buffer);
}
m_inOverlapped.StartOperation(OperationType.Receive);
m_receiveWSABuffer.Pointer = new IntPtr(m_receivePinnedBuffer.Address + offset);
m_receiveWSABuffer.Length = count;
int bytesTransferred;
SocketError socketError = UnsafeMethods.WSARecv(Handle, ref m_receiveWSABuffer, 1,
out bytesTransferred, ref flags, m_inOverlapped.Address, IntPtr.Zero);
if (socketError != SocketError.Success)
{
socketError = (SocketError)Marshal.GetLastWin32Error();
if (socketError != SocketError.IOPending)
{
throw new SocketException((int)socketError);
}
}
}