/// <summary>
/// Accepts a pending connection request
/// </summary>
/// <remarks>
/// Accept is a blocking method that returns a NamedPipeSocket you can use to send and receive data.
/// </remarks>
/// <returns>The NamedPipeSocket.</returns>
public NamedPipeSocket Accept()
{
IntPtr hPipe = NamedPipeHelper.CreateNamedPipe(
pipeName,
NamedPipeHelper.PIPE_ACCESS_DUPLEX | NamedPipeHelper.FILE_FLAG_OVERLAPPED,
NamedPipeHelper.PIPE_TYPE_MESSAGE
| NamedPipeHelper.PIPE_READMODE_MESSAGE
| NamedPipeHelper.PIPE_WAIT,
NamedPipeHelper.PIPE_UNLIMITED_INSTANCES,
DefaultBufferSize,
DefaultBufferSize,
NamedPipeHelper.NMPWAIT_USE_DEFAULT_WAIT,
IntPtr.Zero
);
if (hPipe.ToInt32() == NamedPipeHelper.INVALID_HANDLE_VALUE)
{
throw new NamedPipeException(Marshal.GetLastWin32Error());
}
// Connect the named pipe with overlapped structure
// in order to make it altertable. This way we will
// wake up when someone aborts a thread waiting
// for this pipe.
NativeOverlapped overlapped = new NativeOverlapped();
bool canConnect = NamedPipeHelper.ConnectNamedPipe(hPipe, ref overlapped);
int lastError = Marshal.GetLastWin32Error();
if (!canConnect)
{
if (lastError == NamedPipeHelper.ERROR_IO_PENDING)
{
uint bytesTransferred = 0;
if (!GetOverlappedResultEx(hPipe, ref overlapped, out bytesTransferred, Timeout.Infinite, true))
{
lastError = Marshal.GetLastWin32Error();
NamedPipeHelper.CloseHandle(hPipe);
throw new NamedPipeException(lastError);
}
canConnect = true;
}
else if (lastError == NamedPipeHelper.ERROR_PIPE_CONNECTED)
{
canConnect = true;
}
}
if (!canConnect)
{
NamedPipeHelper.CloseHandle(hPipe);
throw new NamedPipeException(lastError);
}
return(new NamedPipeSocket(hPipe));
}
/// <summary>
/// Disposes the object.
/// </summary>
void IDisposable.Dispose()
{
if (hPipe != IntPtr.Zero)
{
try
{
// disconnect the pipe
if (Info.IsServer)
{
NamedPipeHelper.FlushFileBuffers(hPipe);
NamedPipeHelper.DisconnectNamedPipe(hPipe);
}
}
catch (NamedPipeException)
{
}
NamedPipeHelper.CloseHandle(hPipe);
hPipe = IntPtr.Zero;
GC.SuppressFinalize(this);
}
}
/// <summary>
/// Accepts a pending connection request
/// </summary>
/// <remarks>
/// Accept is a blocking method that returns a NamedPipeSocket you can use to send and receive data.
/// </remarks>
/// <returns>The NamedPipeSocket.</returns>
public NamedPipeSocket Accept()
{
IntPtr hPipe = NamedPipeHelper.CreateNamedPipe(
pipeName,
NamedPipeHelper.PIPE_ACCESS_DUPLEX,
NamedPipeHelper.PIPE_TYPE_MESSAGE
| NamedPipeHelper.PIPE_READMODE_MESSAGE
| NamedPipeHelper.PIPE_WAIT,
NamedPipeHelper.PIPE_UNLIMITED_INSTANCES,
DefaultBufferSize,
DefaultBufferSize,
NamedPipeHelper.NMPWAIT_USE_DEFAULT_WAIT,
IntPtr.Zero
);
if (hPipe.ToInt32() == NamedPipeHelper.INVALID_HANDLE_VALUE)
{
throw new NamedPipeException();
}
bool canConnect = NamedPipeHelper.ConnectNamedPipe(hPipe, IntPtr.Zero);
int lastError = Marshal.GetLastWin32Error();
if (!canConnect && lastError == NamedPipeHelper.ERROR_PIPE_CONNECTED)
{
canConnect = true;
}
if (canConnect)
{
return(new NamedPipeSocket(hPipe));
}
else
{
NamedPipeHelper.CloseHandle(hPipe);
throw new NamedPipeException(lastError);
}
}