internal OverlappedCache(System.Threading.Overlapped overlapped, object pinnedObjects, IOCompletionCallback callback, bool alreadyTriedCast)
{
this.m_Overlapped = overlapped;
this.m_PinnedObjects = pinnedObjects;
this.m_PinnedObjectsArray = alreadyTriedCast ? null : NclConstants.EmptyObjectArray;
this.m_NativeOverlapped = new SafeNativeOverlapped(overlapped.UnsafePack(callback, pinnedObjects));
}
// SetUnmanagedStructures
//
// This needs to be called for overlapped IO to function properly.
//
// Fills in overlapped Structures used in an async overlapped Winsock call.
// These calls are outside the runtime and are unmanaged code, so we need
// to prepare specific structures and ints that lie in unmanaged memory
// since the overlapped calls may complete asynchronously.
internal void SetUnmanagedStructures(object objectsToPin)
{
Socket s = (Socket)AsyncObject;
// Bind the Win32 Socket Handle to the ThreadPool
Debug.Assert(s != null, "m_CurrentSocket is null");
Debug.Assert(s.SafeHandle != null, "m_CurrentSocket.SafeHandle is null");
if (s.SafeHandle.IsInvalid)
{
throw new ObjectDisposedException(s.GetType().FullName);
}
ThreadPoolBoundHandle boundHandle = s.SafeHandle.GetOrAllocateThreadPoolBoundHandle();
unsafe
{
NativeOverlapped* overlapped = boundHandle.AllocateNativeOverlapped(s_ioCallback, this, objectsToPin);
_nativeOverlapped = new SafeNativeOverlapped(s.SafeHandle, overlapped);
if (GlobalLog.IsEnabled)
{
GlobalLog.Print(
"BaseOverlappedAsyncResult#" + LoggingHash.HashString(this) +
"::boundHandle#" + LoggingHash.HashString(boundHandle) +
"::AllocateNativeOverlapped. Return=" +
_nativeOverlapped.DangerousGetHandle().ToString("x"));
}
}
}
private void Reset(uint size)
{
if (size == _size)
{
return;
}
if (_size != 0)
{
_overlapped.Dispose();
}
_size = size;
if (size == 0)
{
_overlapped = null;
_memoryBlob = null;
_backingBuffer = null;
return;
}
_backingBuffer = new byte[checked ((int)size)];
var boundHandle = RequestContext.Server.RequestQueue.BoundHandle;
_overlapped = new SafeNativeOverlapped(boundHandle,
boundHandle.AllocateNativeOverlapped(IOCallback, this, _backingBuffer));
_memoryBlob = (HttpApiTypes.HTTP_SSL_CLIENT_CERT_INFO *)Marshal.UnsafeAddrOfPinnedArrayElement(_backingBuffer, 0);
}
internal OverlappedCache(System.Threading.Overlapped overlapped, object[] pinnedObjectsArray, IOCompletionCallback callback)
{
this.m_Overlapped = overlapped;
this.m_PinnedObjects = pinnedObjectsArray;
this.m_PinnedObjectsArray = pinnedObjectsArray;
this.m_NativeOverlapped = new SafeNativeOverlapped(overlapped.UnsafePack(callback, pinnedObjectsArray));
}
internal void AllocateNativeRequest(uint?size = null, ulong requestId = 0)
{
_nativeRequestContext?.ReleasePins();
_nativeRequestContext?.Dispose();
//Debug.Assert(size != 0, "unexpected size");
// We can't reuse overlapped objects
uint newSize = size.HasValue ? size.Value : DefaultBufferSize;
var backingBuffer = new byte[newSize + AlignmentPadding];
var boundHandle = Server.RequestQueue.BoundHandle;
var nativeOverlapped = new SafeNativeOverlapped(boundHandle,
boundHandle.AllocateNativeOverlapped(IOCallback, this, backingBuffer));
var requestAddress = Marshal.UnsafeAddrOfPinnedArrayElement(backingBuffer, 0);
// TODO:
// Apparently the HttpReceiveHttpRequest memory alignment requirements for non - ARM processors
// are different than for ARM processors. We have seen 4 - byte - aligned buffers allocated on
// virtual x64/x86 machines which were accepted by HttpReceiveHttpRequest without errors. In
// these cases the buffer alignment may cause reading values at invalid offset. Setting buffer
// alignment to 0 for now.
//
// _bufferAlignment = (int)(requestAddress.ToInt64() & 0x07);
var bufferAlignment = 0;
var nativeRequest = (HttpApiTypes.HTTP_REQUEST *)(requestAddress + bufferAlignment);
// nativeRequest
_nativeRequestContext = new NativeRequestContext(nativeOverlapped, bufferAlignment, nativeRequest, backingBuffer, requestId);
}
internal ResponseStreamAsyncResult(ResponseBody responseStream, FileStream fileStream, long offset,
long count, bool chunked, CancellationToken cancellationToken)
: this(responseStream, cancellationToken)
{
var boundHandle = responseStream.RequestContext.Server.RequestQueue.BoundHandle;
_fileStream = fileStream;
if (count == 0)
{
_dataChunks = null;
_overlapped = new SafeNativeOverlapped(boundHandle,
boundHandle.AllocateNativeOverlapped(IOCallback, this, null));
}
else
{
_dataChunks = new HttpApiTypes.HTTP_DATA_CHUNK[chunked ? 3 : 1];
object[] objectsToPin = new object[_dataChunks.Length];
objectsToPin[_dataChunks.Length - 1] = _dataChunks;
var chunkHeaderBuffer = new ArraySegment <byte>();
if (chunked)
{
chunkHeaderBuffer = Helpers.GetChunkHeader(count);
_dataChunks[0].DataChunkType = HttpApiTypes.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
_dataChunks[0].fromMemory.BufferLength = (uint)chunkHeaderBuffer.Count;
objectsToPin[0] = chunkHeaderBuffer.Array;
_dataChunks[1].DataChunkType = HttpApiTypes.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromFileHandle;
_dataChunks[1].fromFile.offset = (ulong)offset;
_dataChunks[1].fromFile.count = (ulong)count;
_dataChunks[1].fromFile.fileHandle = _fileStream.SafeFileHandle.DangerousGetHandle();
// Nothing to pin for the file handle.
_dataChunks[2].DataChunkType = HttpApiTypes.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
_dataChunks[2].fromMemory.BufferLength = (uint)Helpers.CRLF.Length;
objectsToPin[1] = Helpers.CRLF;
}
else
{
_dataChunks[0].DataChunkType = HttpApiTypes.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromFileHandle;
_dataChunks[0].fromFile.offset = (ulong)offset;
_dataChunks[0].fromFile.count = (ulong)count;
_dataChunks[0].fromFile.fileHandle = _fileStream.SafeFileHandle.DangerousGetHandle();
}
// This call will pin needed memory
_overlapped = new SafeNativeOverlapped(boundHandle,
boundHandle.AllocateNativeOverlapped(IOCallback, this, objectsToPin));
if (chunked)
{
// These must be set after pinning with Overlapped.
_dataChunks[0].fromMemory.pBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(chunkHeaderBuffer.Array, chunkHeaderBuffer.Offset);
_dataChunks[2].fromMemory.pBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(Helpers.CRLF, 0);
}
}
}
internal static unsafe extern SocketError WSARecv(
IntPtr socketHandle,
WSABuffer *buffer,
int bufferCount,
out int bytesTransferred,
ref SocketFlags socketFlags,
SafeNativeOverlapped overlapped,
IntPtr completionRoutine);
internal static extern unsafe SocketError WSASend(
IntPtr socketHandle,
WSABuffer *buffers,
int bufferCount,
out int bytesTransferred,
SocketFlags socketFlags,
SafeNativeOverlapped overlapped,
IntPtr completionRoutine);
internal ResponseStreamAsyncResult(ResponseBody responseStream, ArraySegment <byte> data, bool chunked,
CancellationToken cancellationToken)
: this(responseStream, cancellationToken)
{
var boundHandle = _responseStream.RequestContext.Server.RequestQueue.BoundHandle;
object[] objectsToPin;
if (data.Count == 0)
{
_dataChunks = null;
_overlapped = new SafeNativeOverlapped(boundHandle,
boundHandle.AllocateNativeOverlapped(IOCallback, this, null));
return;
}
_dataChunks = new HttpApiTypes.HTTP_DATA_CHUNK[1 + (chunked ? 2 : 0)];
objectsToPin = new object[_dataChunks.Length + 1];
objectsToPin[0] = _dataChunks;
var currentChunk = 0;
var currentPin = 1;
var chunkHeaderBuffer = new ArraySegment <byte>();
if (chunked)
{
chunkHeaderBuffer = Helpers.GetChunkHeader(data.Count);
SetDataChunk(_dataChunks, ref currentChunk, objectsToPin, ref currentPin, chunkHeaderBuffer);
}
SetDataChunk(_dataChunks, ref currentChunk, objectsToPin, ref currentPin, data);
if (chunked)
{
SetDataChunk(_dataChunks, ref currentChunk, objectsToPin, ref currentPin, new ArraySegment <byte>(Helpers.CRLF));
}
// This call will pin needed memory
_overlapped = new SafeNativeOverlapped(boundHandle,
boundHandle.AllocateNativeOverlapped(IOCallback, this, objectsToPin));
currentChunk = 0;
if (chunked)
{
_dataChunks[currentChunk].fromMemory.pBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(chunkHeaderBuffer.Array, chunkHeaderBuffer.Offset);
currentChunk++;
}
_dataChunks[currentChunk].fromMemory.pBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(data.Array, data.Offset);
currentChunk++;
if (chunked)
{
_dataChunks[currentChunk].fromMemory.pBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(Helpers.CRLF, 0);
currentChunk++;
}
}
internal static extern SocketError WSARecvFrom(
[In] SafeCloseSocket socketHandle,
[In, Out] WSABuffer[] buffers,
[In] int bufferCount,
[Out] out int bytesTransferred,
[In, Out] ref SocketFlags socketFlags,
[In] IntPtr socketAddressPointer,
[In] IntPtr socketAddressSizePointer,
[In] SafeNativeOverlapped overlapped,
[In] IntPtr completionRoutine);
internal static extern SocketError WSASendTo(
[In] SafeCloseSocket socketHandle,
[In] WSABuffer[] buffersArray,
[In] int bufferCount,
[Out] out int bytesTransferred,
[In] SocketFlags socketFlags,
[In] IntPtr socketAddress,
[In] int socketAddressSize,
[In] SafeNativeOverlapped overlapped,
[In] IntPtr completionRoutine);
internal static unsafe extern SocketError WSARecvFrom(
SafeCloseSocket socketHandle,
WSABuffer *buffers,
int bufferCount,
out int bytesTransferred,
ref SocketFlags socketFlags,
IntPtr socketAddressPointer,
IntPtr socketAddressSizePointer,
SafeNativeOverlapped overlapped,
IntPtr completionRoutine);
internal RequestStreamAsyncResult(RequestStream requestStream, object userState, AsyncCallback callback, byte[] buffer, int offset, uint dataAlreadyRead, CancellationTokenRegistration cancellationRegistration)
: this(requestStream, userState, callback)
{
_dataAlreadyRead = dataAlreadyRead;
var boundHandle = requestStream.RequestContext.Server.RequestQueue.BoundHandle;
_overlapped = new SafeNativeOverlapped(boundHandle,
boundHandle.AllocateNativeOverlapped(IOCallback, this, buffer));
_pinnedBuffer = (Marshal.UnsafeAddrOfPinnedArrayElement(buffer, offset));
_cancellationRegistration = cancellationRegistration;
}
internal void AllocateNativeRequest(uint?size = null, ulong requestId = 0)
{
_nativeRequestContext?.ReleasePins();
_nativeRequestContext?.Dispose();
// We can't reuse overlapped objects
var boundHandle = Server.RequestQueue.BoundHandle;
var nativeOverlapped = new SafeNativeOverlapped(boundHandle,
boundHandle.AllocateNativeOverlapped(IOCallback, this, pinData: null));
// nativeRequest
_nativeRequestContext = new NativeRequestContext(nativeOverlapped, Server.MemoryPool, size, requestId);
}
private void InternalFree()
{
this.m_Overlapped = null;
this.m_PinnedObjects = null;
if (this.m_NativeOverlapped != null)
{
if (!this.m_NativeOverlapped.IsInvalid)
{
this.m_NativeOverlapped.Dispose();
}
this.m_NativeOverlapped = null;
}
}
internal static unsafe SocketError WSASend(
IntPtr socketHandle,
WSABuffer[] buffers,
int bufferCount,
out int bytesTransferred,
SocketFlags socketFlags,
SafeNativeOverlapped overlapped,
IntPtr completionRoutine)
{
Debug.Assert(buffers != null);
fixed(WSABuffer *buffersPtr = &buffers[0])
{
return(WSASend(socketHandle, buffersPtr, bufferCount, out bytesTransferred, socketFlags, overlapped, completionRoutine));
}
}
internal static unsafe SocketError WSASend(
SafeCloseSocket socketHandle,
ref WSABuffer buffer,
int bufferCount,
out int bytesTransferred,
SocketFlags socketFlags,
SafeNativeOverlapped overlapped,
IntPtr completionRoutine)
{
// We intentionally do NOT copy this back after the function completes:
// We don't want to cause a race in async scenarios.
// The WSABuffer struct should be unchanged anyway.
WSABuffer localBuffer = buffer;
return(WSASend(socketHandle, &localBuffer, bufferCount, out bytesTransferred, socketFlags, overlapped, completionRoutine));
}
internal static unsafe SocketError WSARecvFrom(
SafeCloseSocket socketHandle,
WSABuffer[] buffers,
int bufferCount,
out int bytesTransferred,
ref SocketFlags socketFlags,
IntPtr socketAddressPointer,
IntPtr socketAddressSizePointer,
SafeNativeOverlapped overlapped,
IntPtr completionRoutine)
{
Debug.Assert(buffers != null);
fixed(WSABuffer *buffersPtr = &buffers[0])
{
return(WSARecvFrom(socketHandle, buffersPtr, bufferCount, out bytesTransferred, ref socketFlags, socketAddressPointer, socketAddressSizePointer, overlapped, completionRoutine));
}
}
// SetUnmanagedStructures
//
// This needs to be called for overlapped IO to function properly.
//
// Fills in overlapped Structures used in an async overlapped Winsock call.
// These calls are outside the runtime and are unmanaged code, so we need
// to prepare specific structures and ints that lie in unmanaged memory
// since the overlapped calls may complete asynchronously.
internal void SetUnmanagedStructures(object objectsToPin)
{
Socket s = (Socket)AsyncObject;
// Bind the Win32 Socket Handle to the ThreadPool
Debug.Assert(s != null, "m_CurrentSocket is null");
Debug.Assert(s.SafeHandle != null, "m_CurrentSocket.SafeHandle is null");
if (s.SafeHandle.IsInvalid)
{
throw new ObjectDisposedException(s.GetType().FullName);
}
ThreadPoolBoundHandle boundHandle = s.SafeHandle.GetOrAllocateThreadPoolBoundHandle();
unsafe
{
NativeOverlapped* overlapped = boundHandle.AllocateNativeOverlapped(s_ioCallback, this, objectsToPin);
_nativeOverlapped = new SafeNativeOverlapped(s.SafeHandle, overlapped);
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"{boundHandle}::AllocateNativeOverlapped. return={_nativeOverlapped}");
}
}
// Utility cleanup routine. Frees the overlapped structure.
// This should be overridden to free pinned and unmanaged memory in the subclass.
// It needs to also be invoked from the subclass.
protected virtual void ForceReleaseUnmanagedStructures()
{
// Free the unmanaged memory if allocated.
if (NetEventSource.IsEnabled) NetEventSource.Enter(this);
_nativeOverlapped.Dispose();
_nativeOverlapped = null;
GC.SuppressFinalize(this);
}
private unsafe void PrepareIOCPOperation()
{
Debug.Assert(_currentSocket != null, "_currentSocket is null");
Debug.Assert(_currentSocket.SafeHandle != null, "_currentSocket.SafeHandle is null");
Debug.Assert(!_currentSocket.SafeHandle.IsInvalid, "_currentSocket.SafeHandle is invalid");
ThreadPoolBoundHandle boundHandle = _currentSocket.SafeHandle.GetOrAllocateThreadPoolBoundHandle();
NativeOverlapped* overlapped = null;
if (_preAllocatedOverlapped != null)
{
overlapped = boundHandle.AllocateNativeOverlapped(_preAllocatedOverlapped);
if (GlobalLog.IsEnabled)
{
GlobalLog.Print(
"SocketAsyncEventArgs#" + LoggingHash.HashString(this) +
"::boundHandle#" + LoggingHash.HashString(boundHandle) +
"::AllocateNativeOverlapped(m_PreAllocatedOverlapped=" +
LoggingHash.HashString(_preAllocatedOverlapped) +
"). Returned = " + ((IntPtr)overlapped).ToString("x"));
}
}
else
{
overlapped = boundHandle.AllocateNativeOverlapped(CompletionPortCallback, this, null);
if (GlobalLog.IsEnabled)
{
GlobalLog.Print(
"SocketAsyncEventArgs#" + LoggingHash.HashString(this) +
"::boundHandle#" + LoggingHash.HashString(boundHandle) +
"::AllocateNativeOverlapped(pinData=null)" +
"). Returned = " + ((IntPtr)overlapped).ToString("x"));
}
}
Debug.Assert(overlapped != null, "NativeOverlapped is null.");
// If we already have a SafeNativeOverlapped SafeHandle and it's associated with the same
// socket (due to the last operation that used this SocketAsyncEventArgs using the same socket),
// then we can reuse the same SafeHandle object. Otherwise, this is either the first operation
// or the last operation was with a different socket, so create a new SafeHandle.
if (_ptrNativeOverlapped?.SocketHandle == _currentSocket.SafeHandle)
{
_ptrNativeOverlapped.ReplaceHandle(overlapped);
}
else
{
_ptrNativeOverlapped?.Dispose();
_ptrNativeOverlapped = new SafeNativeOverlapped(_currentSocket.SafeHandle, overlapped);
}
}
internal static extern uint HttpSendResponseEntityBody(SafeHandle requestQueueHandle, ulong requestId, uint flags, ushort entityChunkCount, HTTP_DATA_CHUNK *pEntityChunks, uint *pBytesSent, IntPtr pReserved1, uint Reserved2, SafeNativeOverlapped pOverlapped, IntPtr pLogData);
internal static extern uint HttpReceiveHttpRequest(SafeHandle requestQueueHandle, ulong requestId, uint flags, HTTP_REQUEST *pRequestBuffer, uint requestBufferLength, uint *pBytesReturned, SafeNativeOverlapped pOverlapped);
internal static extern uint HttpReceiveRequestEntityBody(SafeHandle requestQueueHandle, ulong requestId, uint flags, IntPtr pEntityBuffer, uint entityBufferLength, out uint bytesReturned, SafeNativeOverlapped pOverlapped);
internal OverlappedCache(Overlapped overlapped, object[] pinnedObjectsArray, IOCompletionCallback callback)
{
m_Overlapped = overlapped;
m_PinnedObjects = pinnedObjectsArray;
m_PinnedObjectsArray = pinnedObjectsArray;
unsafe
{
m_NativeOverlapped = new SafeNativeOverlapped(overlapped.UnsafePack(callback, pinnedObjectsArray));
}
}
// Cleans up any existing Overlapped object and related state variables.
private void FreeOverlapped(bool checkForShutdown)
{
if (!checkForShutdown || !Environment.HasShutdownStarted)
{
// Free the overlapped object.
if (_ptrNativeOverlapped != null && !_ptrNativeOverlapped.IsInvalid)
{
_ptrNativeOverlapped.Dispose();
_ptrNativeOverlapped = null;
}
// Free the preallocated overlapped object. This in turn will unpin
// any pinned buffers.
if (_preAllocatedOverlapped != null)
{
_preAllocatedOverlapped.Dispose();
_preAllocatedOverlapped = null;
_pinState = PinState.None;
_pinnedAcceptBuffer = null;
_pinnedSingleBuffer = null;
_pinnedSingleBufferOffset = 0;
_pinnedSingleBufferCount = 0;
}
// Free any allocated GCHandles.
if (_socketAddressGCHandle.IsAllocated)
{
_socketAddressGCHandle.Free();
_pinnedSocketAddress = null;
}
if (_wsaMessageBufferGCHandle.IsAllocated)
{
_wsaMessageBufferGCHandle.Free();
_ptrWSAMessageBuffer = IntPtr.Zero;
}
if (_wsaRecvMsgWSABufferArrayGCHandle.IsAllocated)
{
_wsaRecvMsgWSABufferArrayGCHandle.Free();
_ptrWSARecvMsgWSABufferArray = IntPtr.Zero;
}
if (_controlBufferGCHandle.IsAllocated)
{
_controlBufferGCHandle.Free();
_ptrControlBuffer = IntPtr.Zero;
}
}
}
private unsafe void PrepareIOCPOperation()
{
Debug.Assert(_currentSocket != null, "_currentSocket is null");
Debug.Assert(_currentSocket.SafeHandle != null, "_currentSocket.SafeHandle is null");
Debug.Assert(!_currentSocket.SafeHandle.IsInvalid, "_currentSocket.SafeHandle is invalid");
ThreadPoolBoundHandle boundHandle = _currentSocket.SafeHandle.GetOrAllocateThreadPoolBoundHandle();
NativeOverlapped* overlapped = null;
if (_preAllocatedOverlapped != null)
{
overlapped = boundHandle.AllocateNativeOverlapped(_preAllocatedOverlapped);
if (GlobalLog.IsEnabled)
{
GlobalLog.Print(
"SocketAsyncEventArgs#" + LoggingHash.HashString(this) +
"::boundHandle#" + LoggingHash.HashString(boundHandle) +
"::AllocateNativeOverlapped(m_PreAllocatedOverlapped=" +
LoggingHash.HashString(_preAllocatedOverlapped) +
"). Returned = " + ((IntPtr)overlapped).ToString("x"));
}
}
else
{
overlapped = boundHandle.AllocateNativeOverlapped(CompletionPortCallback, this, null);
if (GlobalLog.IsEnabled)
{
GlobalLog.Print(
"SocketAsyncEventArgs#" + LoggingHash.HashString(this) +
"::boundHandle#" + LoggingHash.HashString(boundHandle) +
"::AllocateNativeOverlapped(pinData=null)" +
"). Returned = " + ((IntPtr)overlapped).ToString("x"));
}
}
Debug.Assert(overlapped != null, "NativeOverlapped is null.");
_ptrNativeOverlapped = new SafeNativeOverlapped(_currentSocket.SafeHandle, overlapped);
}
// Method to setup an Overlapped object with with multiple buffers pinned.
unsafe private void SetupOverlappedMultiple() {
ArraySegment<byte>[] tempList = new ArraySegment<byte>[m_BufferList.Count];
m_BufferList.CopyTo(tempList, 0);
// Alloc new Overlapped.
m_Overlapped = new Overlapped();
// Number of things to pin is number of buffers.
// Ensure we have properly sized object array.
if(m_ObjectsToPin == null || (m_ObjectsToPin.Length != tempList.Length)) {
m_ObjectsToPin = new object[tempList.Length];
}
// Fill in object array.
for(int i = 0; i < (tempList.Length); i++) {
m_ObjectsToPin[i] = tempList[i].Array;
}
if(m_WSABufferArray == null || m_WSABufferArray.Length != tempList.Length) {
m_WSABufferArray = new WSABuffer[tempList.Length];
}
// Pin buffers and fill in WSABuffer descriptor pointers and lengths
#if SOCKETTHREADPOOL
m_Overlapped.AsyncResult = new DummyAsyncResult(CompletionPortCallback);
m_PtrNativeOverlapped = new SafeNativeOverlapped(m_Overlapped.UnsafePack(null, m_ObjectsToPin));
#else
m_PtrNativeOverlapped = new SafeNativeOverlapped(m_Overlapped.UnsafePack(CompletionPortCallback, m_ObjectsToPin));
#endif
for(int i = 0; i < tempList.Length; i++) {
ArraySegment<byte> localCopy = tempList[i];
ValidationHelper.ValidateSegment(localCopy);
m_WSABufferArray[i].Pointer = Marshal.UnsafeAddrOfPinnedArrayElement(localCopy.Array, localCopy.Offset);
m_WSABufferArray[i].Length = localCopy.Count;
}
m_PinState = PinState.MultipleBuffer;
}
// Method to clean up any existing Overlapped object and related state variables.
private void FreeOverlapped(bool checkForShutdown) {
if (!checkForShutdown || !NclUtilities.HasShutdownStarted) {
// Free the overlapped object
if(m_PtrNativeOverlapped != null && !m_PtrNativeOverlapped.IsInvalid) {
m_PtrNativeOverlapped.Dispose();
m_PtrNativeOverlapped = null;
m_Overlapped = null;
m_PinState = PinState.None;
m_PinnedAcceptBuffer = null;
m_PinnedSingleBuffer = null;
m_PinnedSingleBufferOffset = 0;
m_PinnedSingleBufferCount = 0;
}
// Free any alloc'd GCHandles
if(m_SocketAddressGCHandle.IsAllocated) {
m_SocketAddressGCHandle.Free();
}
if(m_WSAMessageBufferGCHandle.IsAllocated) {
m_WSAMessageBufferGCHandle.Free();
}
if(m_WSARecvMsgWSABufferArrayGCHandle.IsAllocated) {
m_WSARecvMsgWSABufferArrayGCHandle.Free();
}
if(m_ControlBufferGCHandle.IsAllocated) {
m_ControlBufferGCHandle.Free();
}
}
}
private unsafe void PrepareIOCPOperation()
{
Debug.Assert(_currentSocket != null, "_currentSocket is null");
Debug.Assert(_currentSocket.SafeHandle != null, "_currentSocket.SafeHandle is null");
Debug.Assert(!_currentSocket.SafeHandle.IsInvalid, "_currentSocket.SafeHandle is invalid");
ThreadPoolBoundHandle boundHandle = _currentSocket.SafeHandle.GetOrAllocateThreadPoolBoundHandle();
NativeOverlapped* overlapped = null;
if (_preAllocatedOverlapped != null)
{
overlapped = boundHandle.AllocateNativeOverlapped(_preAllocatedOverlapped);
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"boundHandle:{boundHandle}, PreAllocatedOverlapped:{_preAllocatedOverlapped}, Returned:{(IntPtr)overlapped}");
}
else
{
overlapped = boundHandle.AllocateNativeOverlapped(CompletionPortCallback, this, null);
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"boundHandle:{boundHandle}, AllocateNativeOverlapped(pinData=null), Returned:{(IntPtr)overlapped}");
}
Debug.Assert(overlapped != null, "NativeOverlapped is null.");
// If we already have a SafeNativeOverlapped SafeHandle and it's associated with the same
// socket (due to the last operation that used this SocketAsyncEventArgs using the same socket),
// then we can reuse the same SafeHandle object. Otherwise, this is either the first operation
// or the last operation was with a different socket, so create a new SafeHandle.
if (_ptrNativeOverlapped?.SocketHandle == _currentSocket.SafeHandle)
{
_ptrNativeOverlapped.ReplaceHandle(overlapped);
}
else
{
_ptrNativeOverlapped?.Dispose();
_ptrNativeOverlapped = new SafeNativeOverlapped(_currentSocket.SafeHandle, overlapped);
}
}
internal static extern unsafe uint CancelIoEx(SafeHandle handle, SafeNativeOverlapped overlapped);
internal static unsafe partial uint CancelIoEx(SafeHandle handle, SafeNativeOverlapped overlapped);
// Method to setup an Overlapped object with either m_Buffer or m_AcceptBuffer pinned.
unsafe private void SetupOverlappedSingle(bool pinSingleBuffer) {
// Alloc new Overlapped.
m_Overlapped = new Overlapped();
// Pin buffer, get native pointers, and fill in WSABuffer descriptor.
if(pinSingleBuffer) {
if(m_Buffer != null) {
#if SOCKETTHREADPOOL
m_Overlapped.AsyncResult = new DummyAsyncResult(CompletionPortCallback);
m_PtrNativeOverlapped = new SafeNativeOverlapped(m_Overlapped.UnsafePack(null, m_Buffer));
#else
m_PtrNativeOverlapped = new SafeNativeOverlapped(m_Overlapped.UnsafePack(CompletionPortCallback, m_Buffer));
#endif
m_PinnedSingleBuffer = m_Buffer;
m_PinnedSingleBufferOffset = m_Offset;
m_PinnedSingleBufferCount = m_Count;
m_PtrSingleBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(m_Buffer, m_Offset);
m_PtrAcceptBuffer = IntPtr.Zero;
m_WSABuffer.Pointer = m_PtrSingleBuffer;
m_WSABuffer.Length = m_Count;
m_PinState = PinState.SingleBuffer;
} else {
#if SOCKETTHREADPOOL
m_Overlapped.AsyncResult = new DummyAsyncResult(CompletionPortCallback);
m_PtrNativeOverlapped = new SafeNativeOverlapped(m_Overlapped.UnsafePack(null, null));
#else
m_PtrNativeOverlapped = new SafeNativeOverlapped(m_Overlapped.UnsafePack(CompletionPortCallback, null));
#endif
m_PinnedSingleBuffer = null;
m_PinnedSingleBufferOffset = 0;
m_PinnedSingleBufferCount = 0;
m_PtrSingleBuffer = IntPtr.Zero;
m_PtrAcceptBuffer = IntPtr.Zero;
m_WSABuffer.Pointer = m_PtrSingleBuffer;
m_WSABuffer.Length = m_Count;
m_PinState = PinState.NoBuffer;
}
} else {
#if SOCKETTHREADPOOL
m_Overlapped.AsyncResult = new DummyAsyncResult(CompletionPortCallback);
m_PtrNativeOverlapped = new SafeNativeOverlapped(m_Overlapped.UnsafePack(null, m_AcceptBuffer));
#else
m_PtrNativeOverlapped = new SafeNativeOverlapped(m_Overlapped.UnsafePack(CompletionPortCallback, m_AcceptBuffer));
#endif
m_PinnedAcceptBuffer = m_AcceptBuffer;
m_PtrAcceptBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(m_AcceptBuffer, 0);
m_PtrSingleBuffer = IntPtr.Zero;
m_PinState = PinState.SingleAcceptBuffer;
}
}
private void InternalFree()
{
m_Overlapped = null;
m_PinnedObjects = null;
if (m_NativeOverlapped != null)
{
if (!m_NativeOverlapped.IsInvalid)
{
m_NativeOverlapped.Dispose();
}
m_NativeOverlapped = null;
}
}
// Method to setup an Overlapped object for SendPacketsAsync.
unsafe private void SetupOverlappedSendPackets() {
int index;
// Alloc new Overlapped.
m_Overlapped = new Overlapped();
// Alloc native descriptor.
m_SendPacketsDescriptor =
new UnsafeNclNativeMethods.OSSOCK.TransmitPacketsElement[m_SendPacketsElementsFileCount + m_SendPacketsElementsBufferCount];
// Number of things to pin is number of buffers + 1 (native descriptor).
// Ensure we have properly sized object array.
if(m_ObjectsToPin == null || (m_ObjectsToPin.Length != m_SendPacketsElementsBufferCount + 1)) {
m_ObjectsToPin = new object[m_SendPacketsElementsBufferCount + 1];
}
// Fill in objects to pin array. Native descriptor buffer first and then user specified buffers.
m_ObjectsToPin[0] = m_SendPacketsDescriptor;
index = 1;
foreach(SendPacketsElement spe in m_SendPacketsElementsInternal) {
if(spe != null && spe.m_Buffer != null && spe.m_Count > 0) {
m_ObjectsToPin[index] = spe.m_Buffer;
index++;
}
}
// Pin buffers
#if SOCKETTHREADPOOL
m_Overlapped.AsyncResult = new DummyAsyncResult(CompletionPortCallback);
m_PtrNativeOverlapped = new SafeNativeOverlapped(m_Overlapped.UnsafePack(null, m_ObjectsToPin));
#else
m_PtrNativeOverlapped = new SafeNativeOverlapped(m_Overlapped.UnsafePack(CompletionPortCallback, m_ObjectsToPin));
#endif
// Get pointer to native descriptor.
m_PtrSendPacketsDescriptor = Marshal.UnsafeAddrOfPinnedArrayElement(m_SendPacketsDescriptor, 0);
// Fill in native descriptor.
int descriptorIndex = 0;
int fileIndex = 0;
foreach(SendPacketsElement spe in m_SendPacketsElementsInternal) {
if (spe != null) {
if(spe.m_Buffer != null && spe.m_Count > 0) {
// a buffer
m_SendPacketsDescriptor[descriptorIndex].buffer = Marshal.UnsafeAddrOfPinnedArrayElement(spe.m_Buffer, spe.m_Offset);
m_SendPacketsDescriptor[descriptorIndex].length = (uint)spe.m_Count;
m_SendPacketsDescriptor[descriptorIndex].flags = spe.m_Flags;
descriptorIndex++;
} else if (spe.m_FilePath != null) {
// a file
m_SendPacketsDescriptor[descriptorIndex].fileHandle = m_SendPacketsFileHandles[fileIndex].DangerousGetHandle();
m_SendPacketsDescriptor[descriptorIndex].fileOffset = spe.m_Offset;
m_SendPacketsDescriptor[descriptorIndex].length = (uint)spe.m_Count;
m_SendPacketsDescriptor[descriptorIndex].flags = spe.m_Flags;
fileIndex++;
descriptorIndex++;
}
}
}
m_PinState = PinState.SendPackets;
}
//
// This method is called after an asynchronous call is made for the user,
// it checks and acts accordingly if the IO:
// 1) completed synchronously.
// 2) was pended.
// 3) failed.
//
internal unsafe SocketError CheckAsyncCallOverlappedResult(SocketError errorCode)
{
#if DEBUG
m_SavedErrorCode = errorCode;
#endif
//
// Check if the Async IO call:
// 1) was pended.
// 2) completed synchronously.
// 3) failed.
//
if (m_UseOverlappedIO)
{
//
// we're using overlapped IO under Win9x (or NT with registry setting overriding
// completion port usage)
//
switch (errorCode) {
case 0:
case SocketError.IOPending:
//
// the Async IO call was pended:
// Queue our event to the thread pool.
//
GlobalLog.Assert(m_UnmanagedBlob != null, "BaseOverlappedAsyncResult#{0}::CheckAsyncCallOverlappedResult()|Unmanaged blob isn't allocated.", ValidationHelper.HashString(this));
ThreadPool.UnsafeRegisterWaitForSingleObject(
m_OverlappedEvent,
new WaitOrTimerCallback(OverlappedCallback),
this,
-1,
true );
//
// we're done, completion will be asynchronous
// in the callback. return
//
return SocketError.Success;
default:
//
// the Async IO call failed:
// set the number of bytes transferred to -1 (error)
//
ErrorCode = (int)errorCode;
Result = -1;
ReleaseUnmanagedStructures();
break;
}
}
else
{
#if DEBUG
OverlappedCache cache = m_Cache;
if (cache != null)
{
SafeNativeOverlapped nativeOverlappedPtr = cache.NativeOverlapped;
if (nativeOverlappedPtr != null)
m_IntermediateNativeOverlapped = nativeOverlappedPtr;
}
#endif
//
// We're using completion ports under WinNT. Release one reference on the structures for
// the main thread.
//
ReleaseUnmanagedStructures();
switch (errorCode) {
//
// ignore cases in which a completion packet will be queued:
// we'll deal with this IO in the callback
//
case 0:
case SocketError.IOPending:
//
// ignore, do nothing
//
return SocketError.Success;
//
// in the remaining cases a completion packet will NOT be queued:
// we'll have to call the callback explicitly signaling an error
//
default:
//
// call the callback with error code
//
ErrorCode = (int)errorCode;
Result = -1;
// The AsyncResult must be cleared since the callback isn't going to be called.
// Not doing so leads to a leak where the pinned cached OverlappedData continues to point to the async result object,
// which points to the Socket (as well as user data) and to the OverlappedCache, preventing the OverlappedCache
// finalizer from freeing the pinned OverlappedData.
if (m_Cache != null)
{
// Could be null only if SetUnmanagedStructures weren't called.
m_Cache.Overlapped.AsyncResult = null;
}
ReleaseUnmanagedStructures(); // Additional release for the completion that won't happen.
break;
}
}
return errorCode;
}
private void CompleteIOCPOperation()
{
// TODO #4900: Optimization to remove callbacks if the operations are completed synchronously:
// Use SetFileCompletionNotificationModes(FILE_SKIP_COMPLETION_PORT_ON_SUCCESS).
// If SetFileCompletionNotificationModes(FILE_SKIP_COMPLETION_PORT_ON_SUCCESS) is not set on this handle
// it is guaranteed that the IOCP operation will be completed in the callback even if Socket.Success was
// returned by the Win32 API.
// Required to allow another IOCP operation for the same handle.
if (_ptrNativeOverlapped != null)
{
_ptrNativeOverlapped.Dispose();
_ptrNativeOverlapped = null;
}
}
private void FreeOverlapped(bool checkForShutdown)
{
if (!checkForShutdown || !NclUtilities.HasShutdownStarted)
{
if ((this.m_PtrNativeOverlapped != null) && !this.m_PtrNativeOverlapped.IsInvalid)
{
this.m_PtrNativeOverlapped.Dispose();
this.m_PtrNativeOverlapped = null;
this.m_Overlapped = null;
this.m_PinState = PinState.None;
this.m_PinnedAcceptBuffer = null;
this.m_PinnedSingleBuffer = null;
this.m_PinnedSingleBufferOffset = 0;
this.m_PinnedSingleBufferCount = 0;
}
if (this.m_SocketAddressGCHandle.IsAllocated)
{
this.m_SocketAddressGCHandle.Free();
}
if (this.m_WSAMessageBufferGCHandle.IsAllocated)
{
this.m_WSAMessageBufferGCHandle.Free();
}
if (this.m_WSARecvMsgWSABufferArrayGCHandle.IsAllocated)
{
this.m_WSARecvMsgWSABufferArrayGCHandle.Free();
}
if (this.m_ControlBufferGCHandle.IsAllocated)
{
this.m_ControlBufferGCHandle.Free();
}
}
}
// Utility cleanup routine. Frees the overlapped structure.
// This should be overriden to free pinned and unmanaged memory in the subclass.
// It needs to also be invoked from the subclass.
protected virtual void ForceReleaseUnmanagedStructures()
{
// Free the unmanaged memory if allocated.
if (GlobalLog.IsEnabled)
{
GlobalLog.Print(
"BaseOverlappedAsyncResult#" + LoggingHash.HashString(this) +
"::ForceReleaseUnmanagedStructures");
}
_nativeOverlapped.Dispose();
_nativeOverlapped = null;
GC.SuppressFinalize(this);
}
private void SetupOverlappedMultiple()
{
this.m_Overlapped = new Overlapped();
ArraySegment<byte>[] array = new ArraySegment<byte>[this.m_BufferList.Count];
this.m_BufferList.CopyTo(array, 0);
if ((this.m_ObjectsToPin == null) || (this.m_ObjectsToPin.Length != array.Length))
{
this.m_ObjectsToPin = new object[array.Length];
}
for (int i = 0; i < array.Length; i++)
{
this.m_ObjectsToPin[i] = array[i].Array;
}
if ((this.m_WSABufferArray == null) || (this.m_WSABufferArray.Length != array.Length))
{
this.m_WSABufferArray = new WSABuffer[array.Length];
}
this.m_PtrNativeOverlapped = new SafeNativeOverlapped(this.m_Overlapped.UnsafePack(new IOCompletionCallback(this.CompletionPortCallback), this.m_ObjectsToPin));
for (int j = 0; j < array.Length; j++)
{
ArraySegment<byte> segment = array[j];
ValidationHelper.ValidateSegment(segment);
this.m_WSABufferArray[j].Pointer = Marshal.UnsafeAddrOfPinnedArrayElement(segment.Array, segment.Offset);
this.m_WSABufferArray[j].Length = segment.Count;
}
this.m_PinState = PinState.MultipleBuffer;
}
internal bool TransmitPackets(SafeCloseSocket socketHandle, IntPtr packetArray, int elementCount, int sendSize, SafeNativeOverlapped overlapped)
{
EnsureDynamicWinsockMethods();
TransmitPacketsDelegate transmitPackets = _dynamicWinsockMethods.GetDelegate<TransmitPacketsDelegate>(socketHandle);
// UseDefaultWorkerThread = 0.
return transmitPackets(socketHandle, packetArray, elementCount, sendSize, overlapped, 0);
}
private void SetupOverlappedSendPackets()
{
this.m_Overlapped = new Overlapped();
this.m_SendPacketsDescriptor = new UnsafeNclNativeMethods.OSSOCK.TransmitPacketsElement[this.m_SendPacketsElementsFileCount + this.m_SendPacketsElementsBufferCount];
if ((this.m_ObjectsToPin == null) || (this.m_ObjectsToPin.Length != (this.m_SendPacketsElementsBufferCount + 1)))
{
this.m_ObjectsToPin = new object[this.m_SendPacketsElementsBufferCount + 1];
}
this.m_ObjectsToPin[0] = this.m_SendPacketsDescriptor;
int index = 1;
foreach (SendPacketsElement element in this.m_SendPacketsElementsInternal)
{
if ((element.m_Buffer != null) && (element.m_Count > 0))
{
this.m_ObjectsToPin[index] = element.m_Buffer;
index++;
}
}
this.m_PtrNativeOverlapped = new SafeNativeOverlapped(this.m_Overlapped.UnsafePack(new IOCompletionCallback(this.CompletionPortCallback), this.m_ObjectsToPin));
this.m_PtrSendPacketsDescriptor = Marshal.UnsafeAddrOfPinnedArrayElement(this.m_SendPacketsDescriptor, 0);
int num2 = 0;
int num3 = 0;
foreach (SendPacketsElement element2 in this.m_SendPacketsElementsInternal)
{
if (element2 != null)
{
if ((element2.m_Buffer != null) && (element2.m_Count > 0))
{
this.m_SendPacketsDescriptor[num2].buffer = Marshal.UnsafeAddrOfPinnedArrayElement(element2.m_Buffer, element2.m_Offset);
this.m_SendPacketsDescriptor[num2].length = (uint) element2.m_Count;
this.m_SendPacketsDescriptor[num2].flags = element2.m_Flags;
num2++;
}
else if ((element2.m_FilePath != null) && (element2.m_FilePath.Length != 0))
{
this.m_SendPacketsDescriptor[num2].fileHandle = this.m_SendPacketsFileHandles[num3].DangerousGetHandle();
this.m_SendPacketsDescriptor[num2].fileOffset = element2.m_Offset;
this.m_SendPacketsDescriptor[num2].length = (uint) element2.m_Count;
this.m_SendPacketsDescriptor[num2].flags = element2.m_Flags;
num3++;
num2++;
}
}
}
this.m_PinState = PinState.SendPackets;
}
internal static extern uint HttpReceiveClientCertificate(SafeHandle requestQueueHandle, ulong connectionId, uint flags, byte *pSslClientCertInfo, uint sslClientCertInfoSize, uint *pBytesReceived, SafeNativeOverlapped pOverlapped);
private void SetupOverlappedSingle(bool pinSingleBuffer)
{
this.m_Overlapped = new Overlapped();
if (pinSingleBuffer)
{
if (this.m_Buffer != null)
{
this.m_PtrNativeOverlapped = new SafeNativeOverlapped(this.m_Overlapped.UnsafePack(new IOCompletionCallback(this.CompletionPortCallback), this.m_Buffer));
this.m_PinnedSingleBuffer = this.m_Buffer;
this.m_PinnedSingleBufferOffset = this.m_Offset;
this.m_PinnedSingleBufferCount = this.m_Count;
this.m_PtrSingleBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(this.m_Buffer, this.m_Offset);
this.m_PtrAcceptBuffer = IntPtr.Zero;
this.m_WSABuffer.Pointer = this.m_PtrSingleBuffer;
this.m_WSABuffer.Length = this.m_Count;
this.m_PinState = PinState.SingleBuffer;
}
else
{
this.m_PtrNativeOverlapped = new SafeNativeOverlapped(this.m_Overlapped.UnsafePack(new IOCompletionCallback(this.CompletionPortCallback), null));
this.m_PinnedSingleBuffer = null;
this.m_PinnedSingleBufferOffset = 0;
this.m_PinnedSingleBufferCount = 0;
this.m_PtrSingleBuffer = IntPtr.Zero;
this.m_PtrAcceptBuffer = IntPtr.Zero;
this.m_WSABuffer.Pointer = this.m_PtrSingleBuffer;
this.m_WSABuffer.Length = this.m_Count;
this.m_PinState = PinState.NoBuffer;
}
}
else
{
this.m_PtrNativeOverlapped = new SafeNativeOverlapped(this.m_Overlapped.UnsafePack(new IOCompletionCallback(this.CompletionPortCallback), this.m_AcceptBuffer));
this.m_PinnedAcceptBuffer = this.m_AcceptBuffer;
this.m_PtrAcceptBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(this.m_AcceptBuffer, 0);
this.m_PtrSingleBuffer = IntPtr.Zero;
this.m_PinState = PinState.SingleAcceptBuffer;
}
}
internal static extern uint HttpSendHttpResponse(SafeHandle requestQueueHandle, ulong requestId, uint flags, HTTP_RESPONSE_V2 *pHttpResponse, HTTP_CACHE_POLICY *pCachePolicy, uint *pBytesSent, IntPtr pReserved1, uint Reserved2, SafeNativeOverlapped pOverlapped, IntPtr pLogData);
private unsafe CancellationToken CreateDisconnectToken(ulong connectionId)
{
LogHelper.LogDebug(_logger, "CreateDisconnectToken", "Registering connection for disconnect for connection ID: " + connectionId);
// Create a nativeOverlapped callback so we can register for disconnect callback
var cts = new CancellationTokenSource();
var returnToken = cts.Token;
SafeNativeOverlapped nativeOverlapped = null;
var boundHandle = _requestQueue.BoundHandle;
nativeOverlapped = new SafeNativeOverlapped(boundHandle, boundHandle.AllocateNativeOverlapped(
(errorCode, numBytes, overlappedPtr) =>
{
LogHelper.LogDebug(_logger, "CreateDisconnectToken", "http.sys disconnect callback fired for connection ID: " + connectionId);
// Free the overlapped
nativeOverlapped.Dispose();
// Pull the token out of the list and Cancel it.
ConnectionCancellation token;
_connectionCancellationTokens.TryRemove(connectionId, out token);
try
{
cts.Cancel();
}
catch (AggregateException exception)
{
LogHelper.LogException(_logger, "CreateDisconnectToken Callback", exception);
}
},
null, null));
uint statusCode;
try
{
statusCode = HttpApi.HttpWaitForDisconnectEx(requestQueueHandle: _requestQueue.Handle,
connectionId: connectionId, reserved: 0, overlapped: nativeOverlapped);
}
catch (Win32Exception exception)
{
statusCode = (uint)exception.NativeErrorCode;
LogHelper.LogException(_logger, "CreateDisconnectToken", exception);
}
if (statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_IO_PENDING &&
statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS)
{
// We got an unknown result, assume the connection has been closed.
nativeOverlapped.Dispose();
ConnectionCancellation ignored;
_connectionCancellationTokens.TryRemove(connectionId, out ignored);
LogHelper.LogDebug(_logger, "HttpWaitForDisconnectEx", new Win32Exception((int)statusCode));
cts.Cancel();
}
if (statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS && HttpSysListener.SkipIOCPCallbackOnSuccess)
{
// IO operation completed synchronously - callback won't be called to signal completion
nativeOverlapped.Dispose();
ConnectionCancellation ignored;
_connectionCancellationTokens.TryRemove(connectionId, out ignored);
cts.Cancel();
}
return(returnToken);
}
internal static extern uint HttpWaitForDisconnectEx(SafeHandle requestQueueHandle, ulong connectionId, uint reserved, SafeNativeOverlapped overlapped);
private bool TransmitPackets(SafeCloseSocket socketHandle, IntPtr packetArray, int elementCount, int sendSize, SafeNativeOverlapped overlapped, TransmitFileOptions flags)
{
EnsureDynamicWinsockMethods();
TransmitPacketsDelegate transmitPackets = m_DynamicWinsockMethods.GetDelegate<TransmitPacketsDelegate>(socketHandle);
return transmitPackets(socketHandle, packetArray, elementCount, sendSize, overlapped, flags);
}
internal static partial uint HttpReceiveClientCertificate(SafeHandle requestQueueHandle, ulong connectionId, uint flags, HTTP_SSL_CLIENT_CERT_INFO *pSslClientCertInfo, uint sslClientCertInfoSize, uint *pBytesReceived, SafeNativeOverlapped pOverlapped);
private unsafe void InitializeOverlapped()
{
m_Overlapped = new Overlapped();
m_PtrNativeOverlapped = new SafeNativeOverlapped(m_Overlapped.UnsafePack(CompletionPortCallback, null));
}