private void AsyncReadPageCallback<TContext>(uint errorCode, uint numBytes, NativeOverlapped* overlap)
{
if (errorCode != 0)
{
Trace.TraceError("OverlappedStream GetQueuedCompletionStatus error: {0}", errorCode);
}
PageAsyncReadResult<TContext> result = (PageAsyncReadResult<TContext>)Overlapped.Unpack(overlap).AsyncResult;
if (Interlocked.Decrement(ref result.count) == 1)
{
// We will be issuing another I/O, so free this overlap
Overlapped.Free(overlap);
long ptr = (long)pointers[result.page % BufferSize];
// Correct for page 0 of HLOG
if (result.page == 0)
ptr += Constants.kFirstValidAddress;
long minObjAddress = long.MaxValue;
long maxObjAddress = long.MinValue;
while (ptr < (long)pointers[result.page % BufferSize] + PageSize)
{
if (!Layout.GetInfo(ptr)->Invalid)
{
if (Key.HasObjectsToSerialize())
{
Key* key = Layout.GetKey(ptr);
var addr = ((AddressInfo*)key)->Address;
if (addr < minObjAddress) minObjAddress = addr;
addr += ((AddressInfo*)key)->Size;
if (addr > maxObjAddress) maxObjAddress = addr;
}
if (Value.HasObjectsToSerialize())
{
Value* value = Layout.GetValue(ptr);
var addr = ((AddressInfo*)value)->Address;
if (addr < minObjAddress) minObjAddress = addr;
addr += ((AddressInfo*)value)->Size;
if (addr > maxObjAddress) maxObjAddress = addr;
}
}
ptr += Layout.GetPhysicalSize(ptr);
}
// Object log fragment should be aligned by construction
Debug.Assert(minObjAddress % sectorSize == 0);
var to_read = (int)(maxObjAddress - minObjAddress);
var objBuffer = ioBufferPool.Get(to_read);
result.freeBuffer1 = objBuffer;
var alignedLength = (to_read + (sectorSize - 1)) & ~(sectorSize - 1);
// Request objects from objlog
result.objlogDevice.ReadAsync(
(int)(result.page >> (LogSegmentSizeBits-LogPageSizeBits)),
(ulong)minObjAddress,
(IntPtr)objBuffer.aligned_pointer, (uint)alignedLength, AsyncReadPageCallback<TContext>, result);
}
else
{
// Load objects from buffer into memory
long ptr = (long)pointers[result.page % BufferSize];
// Correct for page 0 of HLOG
if (result.page == 0)
ptr += Constants.kFirstValidAddress;
MemoryStream ms = new MemoryStream(result.freeBuffer1.buffer);
ms.Seek(result.freeBuffer1.offset + result.freeBuffer1.valid_offset, SeekOrigin.Begin);
while (ptr < (long)pointers[result.page % BufferSize] + PageSize)
{
if (!Layout.GetInfo(ptr)->Invalid)
{
if (Key.HasObjectsToSerialize())
{
Key.Deserialize(Layout.GetKey(ptr), ms);
}
if (Value.HasObjectsToSerialize())
{
Value.Deserialize(Layout.GetValue(ptr), ms);
}
}
ptr += Layout.GetPhysicalSize(ptr);
}
ms.Dispose();
result.Free();
// Call the "real" page read callback
result.callback(errorCode, numBytes, overlap);
}
}
unsafe private static void AsyncPSCallback(uint errorCode, uint numBytes, NativeOverlapped* pOverlapped)
{
// Unpack overlapped
Overlapped overlapped = Overlapped.Unpack(pOverlapped);
// Free the overlapped struct in EndRead/EndWrite.
// Extract async result from overlapped
PipeStreamAsyncResult asyncResult = (PipeStreamAsyncResult)overlapped.AsyncResult;
asyncResult._numBytes = (int)numBytes;
// Allow async read to finish
if (!asyncResult._isWrite)
{
if (errorCode == Interop.mincore.Errors.ERROR_BROKEN_PIPE ||
errorCode == Interop.mincore.Errors.ERROR_PIPE_NOT_CONNECTED ||
errorCode == Interop.mincore.Errors.ERROR_NO_DATA)
{
errorCode = 0;
numBytes = 0;
}
}
// For message type buffer.
if (errorCode == Interop.mincore.Errors.ERROR_MORE_DATA)
{
errorCode = 0;
asyncResult._isMessageComplete = false;
}
else
{
asyncResult._isMessageComplete = true;
}
asyncResult._errorCode = (int)errorCode;
// Call the user-provided callback. It can and often should
// call EndRead or EndWrite. There's no reason to use an async
// delegate here - we're already on a threadpool thread.
// IAsyncResult's completedSynchronously property must return
// false here, saying the user callback was called on another thread.
asyncResult._completedSynchronously = false;
asyncResult._isComplete = true;
// The OS does not signal this event. We must do it ourselves.
ManualResetEvent wh = asyncResult._waitHandle;
if (wh != null)
{
Debug.Assert(!wh.GetSafeWaitHandle().IsClosed, "ManualResetEvent already closed!");
bool r = wh.Set();
Debug.Assert(r, "ManualResetEvent::Set failed!");
if (!r)
{
throw Win32Marshal.GetExceptionForLastWin32Error();
}
}
AsyncCallback callback = asyncResult._userCallback;
if (callback != null)
{
callback(asyncResult);
}
}
protected void AsyncGetFromDiskCallback(
uint errorCode,
uint numBytes,
NativeOverlapped *overlap)
{
if (errorCode != 0)
{
Trace.TraceError("OverlappedStream GetQueuedCompletionStatus error: {0}", errorCode);
}
var result = (AsyncGetFromDiskResult <AsyncIOContext>)Overlapped.Unpack(overlap).AsyncResult;
Interlocked.Decrement(ref numPendingReads);
var ctx = result.context;
var record = ctx.record.GetValidPointer();
if (Layout.HasTotalRecord(record, ctx.record.available_bytes, out int requiredBytes))
{
//We have the complete record.
if (RetrievedObjects(record, ctx))
{
if (Key.Equals(ctx.key, Layout.GetKey((long)record)))
{
//The keys are same, so I/O is complete
// ctx.record = result.record;
ctx.callbackQueue.Add(ctx);
}
else
{
var oldAddress = ctx.logicalAddress;
//keys are not same. I/O is not complete
ctx.logicalAddress = ((RecordInfo *)record)->PreviousAddress;
if (ctx.logicalAddress != Constants.kInvalidAddress)
{
// Delete key, value, record
if (Key.HasObjectsToSerialize())
{
var physicalAddress = (long)ctx.record.GetValidPointer();
Key.Free(Layout.GetKey(physicalAddress));
}
if (Value.HasObjectsToSerialize())
{
var physicalAddress = (long)ctx.record.GetValidPointer();
Value.Free(Layout.GetValue(physicalAddress));
}
ctx.record.Return();
AsyncGetFromDisk(ctx.logicalAddress, requiredBytes, AsyncGetFromDiskCallback, ctx);
}
else
{
ctx.callbackQueue.Add(ctx);
}
}
}
}
else
{
ctx.record.Return();
AsyncGetFromDisk(ctx.logicalAddress, requiredBytes, AsyncGetFromDiskCallback, ctx);
}
Overlapped.Free(overlap);
}
/// <include file='doc\FileSystemWatcher.uex' path='docs/doc[@for="FileSystemWatcher.CompletionStatusChanged"]/*' />
/// <devdoc>
/// Callback from thread pool.
/// </devdoc>
/// <internalonly/>
private unsafe void CompletionStatusChanged(uint errorCode, uint numBytes, NativeOverlapped *overlappedPointer)
{
Overlapped overlapped = Overlapped.Unpack(overlappedPointer);
ulong bufferPtrTemp = ((ulong)overlapped.OffsetHigh) << 32;
bufferPtrTemp = bufferPtrTemp | (0x00000000ffffffff & (ulong)overlapped.OffsetLow);
IntPtr bufferPtr = (IntPtr)bufferPtrTemp;
try {
if (stopListening)
{
return;
}
lock (this) {
if (errorCode != 0)
{
if (errorCode == 995 /* ERROR_OPERATION_ABORTED */)
{
//Win2000 inside a service the first completion status is false
//cannot return without monitoring again.
//NOTE, stefanph: Because this return statement is inside a try/finally block,
//the finally block will execute. It does restart the monitoring.
return;
}
else
{
OnError(new ErrorEventArgs(new Win32Exception((int)errorCode)));
EnableRaisingEvents = false;
return;
}
}
if (numBytes == 0)
{
NotifyInternalBufferOverflowEvent();
}
else // Else, parse each of them and notify appropriate delegates
/******
* Format for the buffer is the following C struct:
*
* typedef struct _FILE_NOTIFY_INFORMATION {
* DWORD NextEntryOffset;
* DWORD Action;
* DWORD FileNameLength;
* WCHAR FileName[1];
* } FILE_NOTIFY_INFORMATION;
*
* NOTE1: FileNameLength is length in bytes.
* NOTE2: The Filename is a Unicode string that's NOT NULL terminated.
* NOTE3: A NextEntryOffset of zero means that it's the last entry
*******/
// Parse the file notify buffer
{
int offset = 0;
int nextOffset, action, nameLength;
string oldName = null;
do
{
// Get next offset
nextOffset = Marshal.ReadInt32((IntPtr)((long)bufferPtr + offset));
// Get change flag
action = Marshal.ReadInt32((IntPtr)((long)bufferPtr + offset + 4));
// Get filename length (in bytes)
nameLength = Marshal.ReadInt32((IntPtr)((long)bufferPtr + offset + 8));
string name = Marshal.PtrToStringUni((IntPtr)((long)bufferPtr + offset + 12), nameLength / 2).ToLower(CultureInfo.InvariantCulture);
/* A slightly convoluted piece of code follows. Here's what's happening:
*
* We wish to collapse the poorly done rename notifications from the
* ReadDirectoryChangesW API into a nice rename event. So to do that,
* it's assumed that a FILE_ACTION_RENAMED_OLD_NAME will be followed
* immediately by a FILE_ACTION_RENAMED_NEW_NAME in the buffer, which is
* all that the following code is doing.
*
* On a FILE_ACTION_RENAMED_OLD_NAME, it asserts that no previous one existed
* and saves its name. If there are no more events in the buffer, it'll
* assert and fire a RenameEventArgs with the Name field null.
*
* If a NEW_NAME action comes in with no previous OLD_NAME, we assert and fire
* a rename event with the OldName field null.
*
* If the OLD_NAME and NEW_NAME actions are indeed there one after the other,
* we'll fire the RenamedEventArgs normally and clear oldName.
*
* If the OLD_NAME is followed by another action, we assert and then fire the
* rename event with the Name field null and then fire the next action.
*
* In case it's not a OLD_NAME or NEW_NAME action, we just fire the event normally.
*
* (Phew!)
*/
// If the action is RENAMED_FROM, save the name of the file
if (action == Direct.FILE_ACTION_RENAMED_OLD_NAME)
{
Debug.Assert(oldName == null, "FileSystemWatcher: Two FILE_ACTION_RENAMED_OLD_NAME " +
"in a row! [" + oldName + "], [ " + name + "]");
oldName = name;
}
else if (action == Direct.FILE_ACTION_RENAMED_NEW_NAME)
{
if (oldName != null)
{
NotifyRenameEventArgs(WatcherChangeTypes.Renamed, name, oldName);
oldName = null;
}
else
{
Debug.Assert(false, "FileSystemWatcher: FILE_ACTION_RENAMED_NEW_NAME with no" +
"old name! [ " + name + "]");
NotifyRenameEventArgs(WatcherChangeTypes.Renamed, name, oldName);
oldName = null;
}
}
else
{
if (oldName != null)
{
Debug.Assert(false, "FileSystemWatcher: FILE_ACTION_RENAMED_OLD_NAME with no" +
"new name! [" + oldName + "]");
NotifyRenameEventArgs(WatcherChangeTypes.Renamed, null, oldName);
oldName = null;
}
// Notify each file of change
NotifyFileSystemEventArgs(action, name);
}
offset += nextOffset;
} while (nextOffset != 0);
if (oldName != null)
{
Debug.Assert(false, "FileSystemWatcher: FILE_ACTION_RENAMED_OLD_NAME with no" +
"new name! [" + oldName + "]");
NotifyRenameEventArgs(WatcherChangeTypes.Renamed, null, oldName);
oldName = null;
}
}
}
}
finally {
Overlapped.Free(overlappedPointer);
if (stopListening || runOnce)
{
if (bufferPtr != (IntPtr)0)
{
Marshal.FreeHGlobal(bufferPtr);
}
}
else
{
Monitor(bufferPtr);
}
}
}
/// <summary>
/// IOCompletion callback for page flush
/// </summary>
/// <param name="errorCode"></param>
/// <param name="numBytes"></param>
/// <param name="overlap"></param>
private void AsyncFlushPartialObjectLogCallback <TContext>(uint errorCode, uint numBytes, NativeOverlapped *overlap)
{
if (errorCode != 0)
{
Trace.TraceError("OverlappedStream GetQueuedCompletionStatus error: {0}", errorCode);
}
// Set the page status to flushed
PageAsyncFlushResult <TContext> result = (PageAsyncFlushResult <TContext>)Overlapped.Unpack(overlap).AsyncResult;
result.done.Set();
Overlapped.Free(overlap);
}
private static unsafe Task <TOut?> ExplicitDeviceIoControlAsync <TIn, TOut>(SafeFileHandle hDevice, uint ioControlCode, TIn?inVal, TOut?outVal) where TIn : struct where TOut : struct
{
ThreadPool.BindHandle(hDevice);
var tcs = new TaskCompletionSource <TOut?>();
var buffer = Pack(inVal, outVal);
var nativeOverlapped = new Overlapped().Pack((code, bytes, overlap) =>
{
try
{
switch (code)
{
case Win32Error.ERROR_SUCCESS:
outVal = Unpack <TIn, TOut>(buffer).Item2;
tcs.TrySetResult(outVal);
break;
case Win32Error.ERROR_OPERATION_ABORTED:
tcs.TrySetCanceled();
break;
default:
tcs.TrySetException(new Win32Exception((int)code));
break;
}
}
finally
{
Overlapped.Unpack(overlap);
Overlapped.Free(overlap);
}
}, buffer);
var unpack = true;
try
{
var inSz = Marshal.SizeOf(typeof(TIn));
fixed(byte *pIn = buffer, pOut = &buffer[inSz])
{
uint bRet;
var ret = DeviceIoControl(hDevice, ioControlCode, pIn, (uint)inSz, pOut, (uint)(buffer.Length - inSz), out bRet, nativeOverlapped);
if (ret)
{
outVal = Unpack <TIn, TOut>(buffer).Item2;
tcs.SetResult(outVal);
return(tcs.Task);
}
}
var lastWin32Error = Marshal.GetLastWin32Error();
if (lastWin32Error != Win32Error.ERROR_IO_PENDING && lastWin32Error != Win32Error.ERROR_SUCCESS)
{
throw new Win32Exception(lastWin32Error);
}
unpack = false;
return(tcs.Task);
}
finally
{
if (unpack)
{
Overlapped.Unpack(nativeOverlapped);
Overlapped.Free(nativeOverlapped);
}
}
}
private static unsafe void CompletionCallback(uint errorCode, uint numBytes, NativeOverlapped *nativeOverlapped)
{
ThreadPoolBoundHandleOverlapped overlapped = (ThreadPoolBoundHandleOverlapped)Overlapped.Unpack(nativeOverlapped);
//
// The Win32 thread pool implementation of ThreadPoolBoundHandle does not permit reuse of NativeOverlapped
// pointers without freeing them and allocating new a new one. We need to ensure that code using the CLR
// ThreadPool implementation follows those rules.
//
if (overlapped._completed)
{
throw new InvalidOperationException(SR.InvalidOperation_NativeOverlappedReused);
}
overlapped._completed = true;
if (overlapped._boundHandle == null)
{
throw new InvalidOperationException(SR.Argument_NativeOverlappedAlreadyFree);
}
overlapped._userCallback(errorCode, numBytes, nativeOverlapped);
}
public static unsafe Task WriteAsync(SafeFileHandle hFile, long fileOffset, ArraySegment <byte> bytes)
{
if (fileOffset < 0)
{
throw new ArgumentOutOfRangeException(nameof(fileOffset));
}
var asyncResult = new AsyncResult();
int low = (int)(fileOffset & 0xFFFFFFFF);
int high = (int)(fileOffset >> 32);
var o = new Overlapped(low, high, IntPtr.Zero, asyncResult);
fixed(byte *bufferBase = bytes.Array)
{
// https://docs.microsoft.com/en-us/dotnet/api/system.threading.overlapped.pack?view=netframework-4.7#System_Threading_Overlapped_Pack_System_Threading_IOCompletionCallback_System_Object_
// The buffer or buffers specified in userData must be the same as those passed to the unmanaged operating system function that performs the asynchronous I/O.
// The runtime pins the buffer or buffers specified in userData for the duration of the I/O operation.
NativeOverlapped *pOverlapped = o.Pack(CompletionCallback, bytes.Array);
bool needToFree = true;
try
{
if (WriteFile(hFile, bufferBase + bytes.Offset, bytes.Count, IntPtr.Zero, pOverlapped) != 0)
{
// Completed synchronously.
// The number of bytes transferred for the I/O request. The system sets this member if the request is completed without errors.
// https://msdn.microsoft.com/en-us/library/windows/desktop/ms684342(v=vs.85).aspx
int bytesWritten = (int)pOverlapped->InternalHigh.ToInt64();
if (bytesWritten != bytes.Count)
{
throw new EndOfStreamException("Could not write all the bytes.");
}
return(CompletedTask);
}
else
{
int systemErrorCode = Marshal.GetLastWin32Error();
if (systemErrorCode == ERROR_IO_DEVICE)
{
throw new IOException($"WriteFile failed with system error ERROR_IO_DEVICE", new Win32Exception(systemErrorCode));
}
else if (systemErrorCode == ERROR_IO_PENDING)
{
needToFree = false;
}
else
{
throw new Win32Exception(systemErrorCode, $"WriteFile failed with system error code:{systemErrorCode}");
}
return(asyncResult.CompletionSource.Value.Task.ContinueWith(t =>
{
if (t.Status == TaskStatus.RanToCompletion && t.Result != bytes.Count)
{
throw new EndOfStreamException("Could not write all the bytes.");
}
return t;
}));
}
}
finally
{
if (needToFree)
{
Overlapped.Unpack(pOverlapped);
Overlapped.Free(pOverlapped);
}
}
}
}
/// <devdoc>
/// Callback from thread pool.
/// </devdoc>
/// <internalonly/>
private unsafe void CompletionStatusChanged(uint errorCode, uint numBytes, NativeOverlapped *overlappedPointer)
{
Overlapped overlapped = Overlapped.Unpack(overlappedPointer);
FSWAsyncResult asyncResult = (FSWAsyncResult)overlapped.AsyncResult;
try
{
if (_stopListening)
{
return;
}
lock (this)
{
if (errorCode != 0)
{
if (errorCode == 995 /* ERROR_OPERATION_ABORTED */)
{
//Inside a service the first completion status is false
//cannot return without monitoring again.
//Because this return statement is inside a try/finally block,
//the finally block will execute. It does restart the monitoring.
return;
}
else
{
OnError(new ErrorEventArgs(new Win32Exception((int)errorCode)));
EnableRaisingEvents = false;
return;
}
}
// Ignore any events that occurred before this "session",
// so we don't get changed or error events after we
// told FSW to stop.
if (asyncResult.session != _currentSession)
{
return;
}
if (numBytes == 0)
{
NotifyInternalBufferOverflowEvent();
}
else
{ // Else, parse each of them and notify appropriate delegates
/******
* Format for the buffer is the following C struct:
*
* typedef struct _FILE_NOTIFY_INFORMATION {
* DWORD NextEntryOffset;
* DWORD Action;
* DWORD FileNameLength;
* WCHAR FileName[1];
* } FILE_NOTIFY_INFORMATION;
*
* NOTE1: FileNameLength is length in bytes.
* NOTE2: The Filename is a Unicode string that's NOT NULL terminated.
* NOTE3: A NextEntryOffset of zero means that it's the last entry
*******/
// Parse the file notify buffer:
int offset = 0;
int nextOffset, action, nameLength;
string oldName = null;
string name = null;
do
{
fixed(byte *buffPtr = asyncResult.buffer)
{
// Get next offset:
nextOffset = *((int *)(buffPtr + offset));
// Get change flag:
action = *((int *)(buffPtr + offset + 4));
// Get filename length (in bytes):
nameLength = *((int *)(buffPtr + offset + 8));
name = new string((char *)(buffPtr + offset + 12), 0, nameLength / 2);
}
/* A slightly convoluted piece of code follows. Here's what's happening:
*
* We wish to collapse the poorly done rename notifications from the
* ReadDirectoryChangesW API into a nice rename event. So to do that,
* it's assumed that a FILE_ACTION_RENAMED_OLD_NAME will be followed
* immediately by a FILE_ACTION_RENAMED_NEW_NAME in the buffer, which is
* all that the following code is doing.
*
* On a FILE_ACTION_RENAMED_OLD_NAME, it asserts that no previous one existed
* and saves its name. If there are no more events in the buffer, it'll
* assert and fire a RenameEventArgs with the Name field null.
*
* If a NEW_NAME action comes in with no previous OLD_NAME, we assert and fire
* a rename event with the OldName field null.
*
* If the OLD_NAME and NEW_NAME actions are indeed there one after the other,
* we'll fire the RenamedEventArgs normally and clear oldName.
*
* If the OLD_NAME is followed by another action, we assert and then fire the
* rename event with the Name field null and then fire the next action.
*
* In case it's not a OLD_NAME or NEW_NAME action, we just fire the event normally.
*
* (Phew!)
*/
// If the action is RENAMED_FROM, save the name of the file
if (action == Direct.FILE_ACTION_RENAMED_OLD_NAME)
{
Debug.Assert(oldName == null, "FileSystemWatcher: Two FILE_ACTION_RENAMED_OLD_NAME " +
"in a row! [" + oldName + "], [ " + name + "]");
oldName = name;
}
else if (action == Direct.FILE_ACTION_RENAMED_NEW_NAME)
{
if (oldName != null)
{
NotifyRenameEventArgs(WatcherChangeTypes.Renamed, name, oldName);
oldName = null;
}
else
{
Debug.Fail("FileSystemWatcher: FILE_ACTION_RENAMED_NEW_NAME with no" +
"old name! [ " + name + "]");
NotifyRenameEventArgs(WatcherChangeTypes.Renamed, name, oldName);
oldName = null;
}
}
else
{
if (oldName != null)
{
Debug.Fail("FileSystemWatcher: FILE_ACTION_RENAMED_OLD_NAME with no" +
"new name! [" + oldName + "]");
NotifyRenameEventArgs(WatcherChangeTypes.Renamed, null, oldName);
oldName = null;
}
// Notify each file of change
NotifyFileSystemEventArgs(action, name);
}
offset += nextOffset;
} while (nextOffset != 0);
if (oldName != null)
{
Debug.Fail("FileSystemWatcher: FILE_ACTION_RENAMED_OLD_NAME with no" +
"new name! [" + oldName + "]");
NotifyRenameEventArgs(WatcherChangeTypes.Renamed, null, oldName);
oldName = null;
}
}
}
}
finally
{
Overlapped.Free(overlappedPointer);
if (!_stopListening)
{
Monitor(asyncResult.buffer);
}
}
}
private static unsafe void WaitCallback(uint errorCode, uint numBytes, System.Threading.NativeOverlapped *nativeOverlapped)
{
ListenerClientCertAsyncResult asyncResult = (ListenerClientCertAsyncResult)Overlapped.Unpack(nativeOverlapped).AsyncResult;
HttpListenerRequest asyncObject = (HttpListenerRequest)asyncResult.AsyncObject;
object result = null;
try
{
if (errorCode == 0xea)
{
UnsafeNclNativeMethods.HttpApi.HTTP_SSL_CLIENT_CERT_INFO *requestBlob = asyncResult.RequestBlob;
asyncResult.Reset(numBytes + requestBlob->CertEncodedSize);
uint pBytesReceived = 0;
errorCode = UnsafeNclNativeMethods.HttpApi.HttpReceiveClientCertificate(asyncObject.HttpListenerContext.RequestQueueHandle, asyncObject.m_ConnectionId, 0, asyncResult.m_MemoryBlob, asyncResult.m_Size, &pBytesReceived, asyncResult.m_pOverlapped);
if ((errorCode == 0x3e5) || (errorCode == 0))
{
return;
}
}
if (errorCode != 0)
{
asyncResult.ErrorCode = (int)errorCode;
result = new HttpListenerException((int)errorCode);
}
else
{
UnsafeNclNativeMethods.HttpApi.HTTP_SSL_CLIENT_CERT_INFO *memoryBlob = asyncResult.m_MemoryBlob;
if (memoryBlob != null)
{
if (memoryBlob->pCertEncoded != null)
{
try
{
byte[] destination = new byte[memoryBlob->CertEncodedSize];
Marshal.Copy((IntPtr)memoryBlob->pCertEncoded, destination, 0, destination.Length);
result = asyncObject.ClientCertificate = new X509Certificate2(destination);
}
catch (CryptographicException exception)
{
result = exception;
}
catch (SecurityException exception2)
{
result = exception2;
}
}
asyncObject.SetClientCertificateError((int)memoryBlob->CertFlags);
}
}
}
catch (Exception exception3)
{
if (NclUtilities.IsFatal(exception3))
{
throw;
}
result = exception3;
}
finally
{
if (errorCode != 0x3e5)
{
asyncObject.ClientCertState = ListenerClientCertState.Completed;
}
}
asyncResult.InvokeCallback(result);
}
