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private Exit ( |
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| traceSource | ||
| obj | object | |
| method | string | |
| retObject | object | |
| Résultat | void | |
/// <summary>
/// <para>Closes the underlying FTP response stream, but does not close control connection</para>
/// </summary>
public override void Close()
{
if (Logging.On)
{
Logging.Enter(Logging.Web, this, "Close", "");
}
if (HttpProxyMode)
{
m_HttpWebResponse.Close();
}
else
{
Stream stream = m_ResponseStream;
if (stream != null)
{
stream.Close();
}
}
if (Logging.On)
{
Logging.Exit(Logging.Web, this, "Close", "");
}
}
public static IPHostEntry GetHostEntry(IPAddress address)
{
if (Logging.On)
{
Logging.Enter(Logging.Sockets, "DNS", "GetHostEntry", "");
}
s_DnsPermission.Demand();
if (address == null)
{
throw new ArgumentNullException("address");
}
if (address.Equals(IPAddress.Any) || address.Equals(IPAddress.IPv6Any))
{
throw new ArgumentException(SR.GetString("net_invalid_ip_addr"), "address");
}
IPHostEntry hostByAddress = InternalGetHostByAddress(address, true);
if (Logging.On)
{
Logging.Exit(Logging.Sockets, "DNS", "GetHostEntry", hostByAddress);
}
return(hostByAddress);
}
public static IPHostEntry GetHostByAddress(IPAddress address)
{
if (Logging.On)
{
Logging.Enter(Logging.Sockets, "DNS", "GetHostByAddress", "");
}
//
// demand Unrestricted DnsPermission for this call
//
s_DnsPermission.Demand();
if (address == null)
{
throw new ArgumentNullException("address");
}
IPHostEntry ipHostEntry = InternalGetHostByAddress(address, false, true);
if (Logging.On)
{
Logging.Exit(Logging.Sockets, "DNS", "GetHostByAddress", ipHostEntry);
}
return(ipHostEntry);
} // GetHostByAddress
internal void Abort()
{
if (Logging.On)
{
Logging.Enter(Logging.HttpListener, this, "Abort", "");
}
CancelRequest(this.RequestQueueHandle, this.m_Request.RequestId);
try
{
this.m_Request.Close();
}
finally
{
IDisposable disposable = (this.m_User == null) ? null : (this.m_User.Identity as IDisposable);
if (disposable != null)
{
disposable.Dispose();
}
}
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Abort", "");
}
}
public static IPHostEntry EndResolve(IAsyncResult asyncResult)
{
if(Logging.On)Logging.Enter(Logging.Sockets, "DNS", "EndResolve", asyncResult);
IPHostEntry ipHostEntry;
try
{
ipHostEntry = HostResolutionEndHelper(asyncResult);
}
catch (SocketException ex)
{
IPAddress address = ((ResolveAsyncResult)asyncResult).address;
if (address == null)
throw; // BeginResolve was called with a HostName, not an IPAddress
if (Logging.On) Logging.PrintWarning(Logging.Sockets, "DNS", "DNS.EndResolve", ex.Message);
ipHostEntry = GetUnresolveAnswer(address);
}
if(Logging.On)Logging.Exit(Logging.Sockets, "DNS", "EndResolve", ipHostEntry);
return ipHostEntry;
} // EndResolve()
internal void ForceCleanup()
{
if (Logging.On)
{
Logging.Enter(Logging.Web, "ConnectionPool::ForceCleanup");
}
while (this.Count > 0)
{
if (!this.Semaphore.WaitOne(0, false))
{
break;
}
PooledStream pooledStream = (PooledStream)this.m_StackNew.Pop();
if (pooledStream == null)
{
pooledStream = (PooledStream)this.m_StackOld.Pop();
}
this.Destroy(pooledStream);
}
if (Logging.On)
{
Logging.Exit(Logging.Web, "ConnectionPool::ForceCleanup");
}
}
/*++
*
* ResponseStream - Return the response stream.
*
* This property returns the response stream for this response. The
* response stream will do de-chunking, etc. as needed.
*
* Input: Nothing. Property is readonly.
*
* Returns: Response stream for response.
*
* --*/
/// <devdoc>
/// <para>Gets the stream used for reading the body of the response from the
/// server.</para>
/// </devdoc>
public override Stream GetResponseStream()
{
if (Logging.On)
{
Logging.Enter(Logging.Web, this, "GetResponseStream", "");
}
CheckDisposed();
if (Logging.On)
{
Logging.PrintInfo(Logging.Web, "ContentLength=" + m_ContentLength);
}
Stream result;
if (m_IsWebSocketResponse && m_StatusCode == HttpStatusCode.SwitchingProtocols) // HTTP 101
{
if (this.m_WebSocketConnectionStream == null)
{
ConnectStream connectStream = m_ConnectStream as ConnectStream;
GlobalLog.Assert(connectStream != null, "HttpWebResponse.m_ConnectStream should always be a ConnectStream in WebSocket cases.");
GlobalLog.Assert(connectStream.Connection != null, "HttpWebResponse.m_ConnectStream.Connection should never be null in WebSocket cases.");
this.m_WebSocketConnectionStream = new WebSocketConnectionStream(connectStream, this.ConnectionGroupName);
}
result = this.m_WebSocketConnectionStream;
}
else
{
result = m_ConnectStream;
}
if (Logging.On)
{
Logging.Exit(Logging.Web, this, "GetResponseStream", result);
}
return(result);
}
/*++
*
* Create - Create a WebRequest.
*
* This is the main creation routine. We take a Uri object, look
* up the Uri in the prefix match table, and invoke the appropriate
* handler to create the object. We also have a parameter that
* tells us whether or not to use the whole Uri or just the
* scheme portion of it.
*
* Input:
*
* RequestUri - Uri object for request.
* UseUriBase - True if we're only to look at the scheme
* portion of the Uri.
*
* Returns:
*
* Newly created WebRequest.
* --*/
private static WebRequest Create(Uri requestUri, bool useUriBase)
{
if (Logging.On)
{
Logging.Enter(Logging.Web, "WebRequest", "Create", requestUri.ToString());
}
string LookupUri;
WebRequestPrefixElement Current = null;
bool Found = false;
if (!useUriBase)
{
LookupUri = requestUri.AbsoluteUri;
}
else
{
//
// schemes are registered as <schemeName>":", so add the separator
// to the string returned from the Uri object
//
LookupUri = requestUri.Scheme + ':';
}
int LookupLength = LookupUri.Length;
// Copy the prefix list so that if it is updated it will
// not affect us on this thread.
ArrayList prefixList = PrefixList;
// Look for the longest matching prefix.
// Walk down the list of prefixes. The prefixes are kept longest
// first. When we find a prefix that is shorter or the same size
// as this Uri, we'll do a compare to see if they match. If they
// do we'll break out of the loop and call the creator.
for (int i = 0; i < prefixList.Count; i++)
{
Current = (WebRequestPrefixElement)prefixList[i];
//
// See if this prefix is short enough.
//
if (LookupLength >= Current.Prefix.Length)
{
//
// It is. See if these match.
//
if (String.Compare(Current.Prefix,
0,
LookupUri,
0,
Current.Prefix.Length,
StringComparison.OrdinalIgnoreCase) == 0)
{
//
// These match. Remember that we found it and break
// out.
//
Found = true;
break;
}
}
}
WebRequest webRequest = null;
if (Found)
{
//
// We found a match, so just call the creator and return what it
// does.
//
webRequest = Current.Creator.Create(requestUri);
if (Logging.On)
{
Logging.Exit(Logging.Web, "WebRequest", "Create", webRequest);
}
return(webRequest);
}
if (Logging.On)
{
Logging.Exit(Logging.Web, "WebRequest", "Create", null);
}
//
// Otherwise no match, throw an exception.
//
throw new NotSupportedException(SR.GetString(SR.net_unknown_prefix));
}
internal static IPHostEntry InternalGetHostByName(string hostName, bool includeIPv6) {
if(Logging.On)Logging.Enter(Logging.Sockets, "DNS", "GetHostByName", hostName);
IPHostEntry ipHostEntry = null;
GlobalLog.Print("Dns.GetHostByName: " + hostName);
if (hostName.Length > MaxHostName // If 255 chars, the last one must be a dot.
|| hostName.Length == MaxHostName && hostName[MaxHostName-1] != '.') {
throw new ArgumentOutOfRangeException("hostName", SR.GetString(SR.net_toolong,
"hostName", MaxHostName.ToString(NumberFormatInfo.CurrentInfo)));
}
//
// IPv6 Changes: IPv6 requires the use of getaddrinfo() rather
// than the traditional IPv4 gethostbyaddr() / gethostbyname().
// getaddrinfo() is also protocol independant in that it will also
// resolve IPv4 names / addresses. As a result, it is the preferred
// resolution mechanism on platforms that support it (Windows 5.1+).
// If getaddrinfo() is unsupported, IPv6 resolution does not work.
//
// Consider : If IPv6 is disabled, we could detect IPv6 addresses
// and throw an unsupported platform exception.
//
// Note : Whilst getaddrinfo is available on WinXP+, we only
// use it if IPv6 is enabled (platform is part of that
// decision). This is done to minimize the number of
// possible tests that are needed.
//
if ( Socket.LegacySupportsIPv6 || includeIPv6) {
//
// IPv6 enabled: use getaddrinfo() to obtain DNS information.
//
ipHostEntry = Dns.GetAddrInfo(hostName);
}
else {
//
// IPv6 disabled: use gethostbyname() to obtain DNS information.
//
IntPtr nativePointer =
UnsafeNclNativeMethods.OSSOCK.gethostbyname(
hostName);
if (nativePointer == IntPtr.Zero) {
// This is for compatiblity with NT4/Win2k
// Need to do this first since if we wait the last error code might be overwritten.
SocketException socketException = new SocketException();
//This block supresses "unknown error" on NT4 when input is
//arbitrary IP address. It simulates same result as on Win2K.
// For Everett compat, we allow this to parse and return IPv6 even when it's disabled.
IPAddress address;
if (IPAddress.TryParse(hostName, out address))
{
ipHostEntry = GetUnresolveAnswer(address);
if(Logging.On)Logging.Exit(Logging.Sockets, "DNS", "GetHostByName", ipHostEntry);
return ipHostEntry;
}
throw socketException;
}
ipHostEntry = NativeToHostEntry(nativePointer);
}
if(Logging.On)Logging.Exit(Logging.Sockets, "DNS", "GetHostByName", ipHostEntry);
return ipHostEntry;
} // GetHostByName
protected override void Dispose(bool disposing)
{
if (Logging.On)
{
Logging.Enter(Logging.HttpListener, this, "Close", "");
}
try {
if (disposing)
{
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::Close() m_Closed:" + m_Closed);
if (m_Closed)
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Close", "");
}
return;
}
m_Closed = true;
UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS flags = ComputeLeftToWrite();
if (m_LeftToWrite > 0 && !m_InOpaqueMode)
{
throw new InvalidOperationException(SR.GetString(SR.net_io_notenoughbyteswritten));
}
bool sentHeaders = m_HttpContext.Response.SentHeaders;
if (sentHeaders && m_LeftToWrite == 0)
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Close", "");
}
return;
}
uint statusCode = 0;
if ((m_HttpContext.Response.BoundaryType == BoundaryType.Chunked || m_HttpContext.Response.BoundaryType == BoundaryType.None) && (String.Compare(m_HttpContext.Request.HttpMethod, "HEAD", StringComparison.OrdinalIgnoreCase) != 0))
{
if (m_HttpContext.Response.BoundaryType == BoundaryType.None)
{
flags |= UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_DISCONNECT;
}
fixed(void *pBuffer = NclConstants.ChunkTerminator)
{
UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK *pDataChunk = null;
if (m_HttpContext.Response.BoundaryType == BoundaryType.Chunked)
{
UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK dataChunk = new UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK();
dataChunk.DataChunkType = UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
dataChunk.pBuffer = (byte *)pBuffer;
dataChunk.BufferLength = (uint)NclConstants.ChunkTerminator.Length;
pDataChunk = &dataChunk;
}
if (!sentHeaders)
{
statusCode = m_HttpContext.Response.SendHeaders(pDataChunk, null, flags, false);
}
else
{
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::Close() calling UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody");
statusCode =
UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody(
m_HttpContext.RequestQueueHandle,
m_HttpContext.RequestId,
(uint)flags,
pDataChunk != null ? (ushort)1 : (ushort)0,
pDataChunk,
null,
SafeLocalFree.Zero,
0,
null,
null);
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::Close() call to UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody returned:" + statusCode);
if (m_HttpContext.Listener.IgnoreWriteExceptions)
{
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::Close() suppressing error");
statusCode = UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS;
}
}
}
}
else
{
if (!sentHeaders)
{
statusCode = m_HttpContext.Response.SendHeaders(null, null, flags, false);
}
}
if (statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS && statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_HANDLE_EOF)
{
Exception exception = new HttpListenerException((int)statusCode);
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "Close", exception);
}
m_HttpContext.Abort();
throw exception;
}
m_LeftToWrite = 0;
}
}
finally {
base.Dispose(disposing);
}
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Dispose", "");
}
}
protected override unsafe void Dispose(bool disposing)
{
if (Logging.On)
{
Logging.Enter(Logging.HttpListener, this, "Close", "");
}
try
{
if (!disposing)
{
goto Label_023F;
}
if (this.m_Closed)
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Close", "");
}
return;
}
this.m_Closed = true;
UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS flags = this.ComputeLeftToWrite();
if (this.m_LeftToWrite > 0L)
{
throw new InvalidOperationException(SR.GetString("net_io_notenoughbyteswritten"));
}
bool sentHeaders = this.m_HttpContext.Response.SentHeaders;
if (sentHeaders && (this.m_LeftToWrite == 0L))
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Close", "");
}
return;
}
uint num = 0;
if (((this.m_HttpContext.Response.BoundaryType == BoundaryType.Chunked) || (this.m_HttpContext.Response.BoundaryType == BoundaryType.None)) && (string.Compare(this.m_HttpContext.Request.HttpMethod, "HEAD", StringComparison.OrdinalIgnoreCase) != 0))
{
if (this.m_HttpContext.Response.BoundaryType == BoundaryType.None)
{
flags |= UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.HTTP_INITIALIZE_SERVER;
}
try
{
byte[] buffer;
if (((buffer = NclConstants.ChunkTerminator) == null) || (buffer.Length == 0))
{
ptrRef = null;
goto Label_0132;
}
fixed(IntPtr *ptrRef = buffer)
{
UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK *http_data_chunkPtr;
Label_0132:
http_data_chunkPtr = null;
if (this.m_HttpContext.Response.BoundaryType == BoundaryType.Chunked)
{
UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK http_data_chunk = new UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK {
DataChunkType = UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory,
pBuffer = (byte *)ptrRef,
BufferLength = (uint)NclConstants.ChunkTerminator.Length
};
http_data_chunkPtr = &http_data_chunk;
}
if (!sentHeaders)
{
num = this.m_HttpContext.Response.SendHeaders(http_data_chunkPtr, null, flags);
}
else
{
num = UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody(this.m_HttpContext.RequestQueueHandle, this.m_HttpContext.RequestId, (uint)flags, (http_data_chunkPtr != null) ? ((ushort)1) : ((ushort)0), http_data_chunkPtr, null, SafeLocalFree.Zero, 0, null, null);
if (this.m_HttpContext.Listener.IgnoreWriteExceptions)
{
num = 0;
}
}
goto Label_01F6;
}
}
finally
{
ptrRef = null;
}
}
if (!sentHeaders)
{
num = this.m_HttpContext.Response.SendHeaders(null, null, flags);
}
Label_01F6:
switch (num)
{
case 0:
case 0x26:
break;
default:
{
Exception e = new HttpListenerException((int)num);
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "Close", e);
}
this.m_HttpContext.Abort();
throw e;
}
}
this.m_LeftToWrite = 0L;
}
finally
{
base.Dispose(disposing);
}
Label_023F:
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Dispose", "");
}
}
public override int Read([In, Out] byte[] buffer, int offset, int size)
{
if (Logging.On)
{
Logging.Enter(Logging.HttpListener, this, "Read", "");
}
GlobalLog.Print("HttpRequestStream#" + ValidationHelper.HashString(this) + "::Read() size:" + size + " offset:" + offset);
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (offset < 0 || offset > buffer.Length)
{
throw new ArgumentOutOfRangeException("offset");
}
if (size < 0 || size > buffer.Length - offset)
{
throw new ArgumentOutOfRangeException("size");
}
if (size == 0 || m_Closed)
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Read", "dataRead:0");
}
return(0);
}
uint dataRead = 0;
if (m_DataChunkIndex != -1)
{
dataRead = UnsafeNclNativeMethods.HttpApi.GetChunks(m_HttpContext.Request.RequestBuffer, m_HttpContext.Request.OriginalBlobAddress, ref m_DataChunkIndex, ref m_DataChunkOffset, buffer, offset, size);
}
if (m_DataChunkIndex == -1 && dataRead < size)
{
GlobalLog.Print("HttpRequestStream#" + ValidationHelper.HashString(this) + "::Read() size:" + size + " offset:" + offset);
uint statusCode = 0;
uint extraDataRead = 0;
offset += (int)dataRead;
size -= (int)dataRead;
//the http.sys team recommends that we limit the size to 128kb
if (size > MaxReadSize)
{
size = MaxReadSize;
}
fixed(byte *pBuffer = buffer)
{
// issue unmanaged blocking call
GlobalLog.Print("HttpRequestStream#" + ValidationHelper.HashString(this) + "::Read() calling UnsafeNclNativeMethods.HttpApi.HttpReceiveRequestEntityBody");
uint flags = 0;
if (!m_InOpaqueMode)
{
flags = (uint)UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.HTTP_RECEIVE_REQUEST_FLAG_COPY_BODY;
}
statusCode =
UnsafeNclNativeMethods.HttpApi.HttpReceiveRequestEntityBody(
m_HttpContext.RequestQueueHandle,
m_HttpContext.RequestId,
flags,
(void *)(pBuffer + offset),
(uint)size,
out extraDataRead,
null);
dataRead += extraDataRead;
GlobalLog.Print("HttpRequestStream#" + ValidationHelper.HashString(this) + "::Read() call to UnsafeNclNativeMethods.HttpApi.HttpReceiveRequestEntityBody returned:" + statusCode + " dataRead:" + dataRead);
}
if (statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS && statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_HANDLE_EOF)
{
Exception exception = new HttpListenerException((int)statusCode);
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "Read", exception);
}
throw exception;
}
UpdateAfterRead(statusCode, dataRead);
}
if (Logging.On)
{
Logging.Dump(Logging.HttpListener, this, "Read", buffer, offset, (int)dataRead);
}
GlobalLog.Print("HttpRequestStream#" + ValidationHelper.HashString(this) + "::Read() returning dataRead:" + dataRead);
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Read", "dataRead:" + dataRead);
}
return((int)dataRead);
}
public override unsafe IAsyncResult BeginRead(byte[] buffer, int offset, int size, AsyncCallback callback, object state)
{
if (Logging.On)
{
Logging.Enter(Logging.HttpListener, this, "BeginRead", "");
}
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if ((offset < 0) || (offset > buffer.Length))
{
throw new ArgumentOutOfRangeException("offset");
}
if ((size < 0) || (size > (buffer.Length - offset)))
{
throw new ArgumentOutOfRangeException("size");
}
if ((size == 0) || this.m_Closed)
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "BeginRead", "");
}
HttpRequestStreamAsyncResult result = new HttpRequestStreamAsyncResult(this, state, callback);
result.InvokeCallback(0);
return(result);
}
HttpRequestStreamAsyncResult result2 = null;
uint num = 0;
if (this.m_DataChunkIndex != -1)
{
num = UnsafeNclNativeMethods.HttpApi.GetChunks(this.m_HttpContext.Request.RequestBuffer, this.m_HttpContext.Request.OriginalBlobAddress, ref this.m_DataChunkIndex, ref this.m_DataChunkOffset, buffer, offset, size);
if ((this.m_DataChunkIndex != -1) && (num == size))
{
result2 = new HttpRequestStreamAsyncResult(this, state, callback, buffer, offset, (uint)size, 0);
result2.InvokeCallback(num);
}
}
if ((this.m_DataChunkIndex == -1) && (num < size))
{
uint num2 = 0;
offset += (int)num;
size -= (int)num;
if (size > 0x20000)
{
size = 0x20000;
}
result2 = new HttpRequestStreamAsyncResult(this, state, callback, buffer, offset, (uint)size, num);
try
{
byte[] buffer2 = buffer;
if (buffer2 != null)
{
int length = buffer2.Length;
}
this.m_HttpContext.EnsureBoundHandle();
num2 = UnsafeNclNativeMethods.HttpApi.HttpReceiveRequestEntityBody(this.m_HttpContext.RequestQueueHandle, this.m_HttpContext.RequestId, 1, result2.m_pPinnedBuffer, (uint)size, null, result2.m_pOverlapped);
}
catch (Exception exception)
{
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "BeginRead", exception);
}
result2.InternalCleanup();
throw;
}
switch (num2)
{
case 0:
case 0x3e5:
goto Label_0217;
}
if (num2 == 0x26)
{
result2.m_pOverlapped.InternalLow = IntPtr.Zero;
}
result2.InternalCleanup();
if (num2 != 0x26)
{
Exception e = new HttpListenerException((int)num2);
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "BeginRead", e);
}
result2.InternalCleanup();
throw e;
}
result2 = new HttpRequestStreamAsyncResult(this, state, callback, num);
result2.InvokeCallback(0);
}
Label_0217:
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "BeginRead", "");
}
return(result2);
}
public override unsafe int Read([In, Out] byte[] buffer, int offset, int size)
{
if (Logging.On)
{
Logging.Enter(Logging.HttpListener, this, "Read", "");
}
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if ((offset < 0) || (offset > buffer.Length))
{
throw new ArgumentOutOfRangeException("offset");
}
if ((size < 0) || (size > (buffer.Length - offset)))
{
throw new ArgumentOutOfRangeException("size");
}
if ((size == 0) || this.m_Closed)
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Read", "dataRead:0");
}
return(0);
}
uint dataRead = 0;
if (this.m_DataChunkIndex != -1)
{
dataRead = UnsafeNclNativeMethods.HttpApi.GetChunks(this.m_HttpContext.Request.RequestBuffer, this.m_HttpContext.Request.OriginalBlobAddress, ref this.m_DataChunkIndex, ref this.m_DataChunkOffset, buffer, offset, size);
}
if ((this.m_DataChunkIndex == -1) && (dataRead < size))
{
uint statusCode = 0;
uint pBytesReturned = 0;
offset += (int)dataRead;
size -= (int)dataRead;
if (size > 0x20000)
{
size = 0x20000;
}
fixed(byte *numRef = buffer)
{
statusCode = UnsafeNclNativeMethods.HttpApi.HttpReceiveRequestEntityBody(this.m_HttpContext.RequestQueueHandle, this.m_HttpContext.RequestId, 1, (void *)(numRef + offset), (uint)size, &pBytesReturned, null);
dataRead += pBytesReturned;
}
switch (statusCode)
{
case 0:
case 0x26:
this.UpdateAfterRead(statusCode, dataRead);
break;
default:
{
Exception e = new HttpListenerException((int)statusCode);
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "Read", e);
}
throw e;
}
}
}
if (Logging.On)
{
Logging.Dump(Logging.HttpListener, this, "Read", buffer, offset, (int)dataRead);
}
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Read", "dataRead:" + dataRead);
}
return((int)dataRead);
}
public override unsafe void Write(byte[] buffer, int offset, int size)
{
if (Logging.On)
{
Logging.Enter(Logging.HttpListener, this, "Write", "");
}
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if ((offset < 0) || (offset > buffer.Length))
{
throw new ArgumentOutOfRangeException("offset");
}
if ((size < 0) || (size > (buffer.Length - offset)))
{
throw new ArgumentOutOfRangeException("size");
}
UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS flags = this.ComputeLeftToWrite();
if (this.m_Closed || ((size == 0) && (this.m_LeftToWrite != 0L)))
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Write", "");
}
}
else
{
uint num;
if ((this.m_LeftToWrite >= 0L) && (size > this.m_LeftToWrite))
{
throw new ProtocolViolationException(SR.GetString("net_entitytoobig"));
}
uint dataWritten = (uint)size;
SafeLocalFree free = null;
IntPtr zero = IntPtr.Zero;
bool sentHeaders = this.m_HttpContext.Response.SentHeaders;
try
{
if (size == 0)
{
num = this.m_HttpContext.Response.SendHeaders(null, null, flags);
}
else
{
try
{
byte[] buffer2;
if (((buffer2 = buffer) == null) || (buffer2.Length == 0))
{
numRef = null;
goto Label_0109;
}
fixed(byte *numRef = buffer2)
{
byte *numPtr;
Label_0109:
numPtr = numRef;
if (this.m_HttpContext.Response.BoundaryType == BoundaryType.Chunked)
{
string str = size.ToString("x", CultureInfo.InvariantCulture);
dataWritten += (uint)(str.Length + 4);
free = SafeLocalFree.LocalAlloc((int)dataWritten);
zero = free.DangerousGetHandle();
for (int i = 0; i < str.Length; i++)
{
Marshal.WriteByte(zero, i, (byte)str[i]);
}
Marshal.WriteInt16(zero, str.Length, (short)0xa0d);
Marshal.Copy(buffer, offset, IntPtrHelper.Add(zero, str.Length + 2), size);
Marshal.WriteInt16(zero, ((int)dataWritten) - 2, (short)0xa0d);
numPtr = (byte *)zero;
offset = 0;
}
UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK pDataChunk = new UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK {
DataChunkType = UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory,
pBuffer = numPtr + offset,
BufferLength = dataWritten
};
flags |= (this.m_LeftToWrite == size) ? UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.NONE : UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_MORE_DATA;
if (!sentHeaders)
{
num = this.m_HttpContext.Response.SendHeaders(&pDataChunk, null, flags);
}
else
{
num = UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody(this.m_HttpContext.RequestQueueHandle, this.m_HttpContext.RequestId, (uint)flags, 1, &pDataChunk, null, SafeLocalFree.Zero, 0, null, null);
if (this.m_HttpContext.Listener.IgnoreWriteExceptions)
{
num = 0;
}
}
}
}
finally
{
numRef = null;
}
}
}
finally
{
if (free != null)
{
free.Close();
}
}
switch (num)
{
case 0:
case 0x26:
this.UpdateAfterWrite(dataWritten);
if (Logging.On)
{
Logging.Dump(Logging.HttpListener, this, "Write", buffer, offset, (int)dataWritten);
}
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Write", "");
}
return;
}
Exception e = new HttpListenerException((int)num);
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "Write", e);
}
this.m_HttpContext.Abort();
throw e;
}
}
public override unsafe IAsyncResult BeginWrite(byte[] buffer, int offset, int size, AsyncCallback callback, object state)
{
uint num;
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if ((offset < 0) || (offset > buffer.Length))
{
throw new ArgumentOutOfRangeException("offset");
}
if ((size < 0) || (size > (buffer.Length - offset)))
{
throw new ArgumentOutOfRangeException("size");
}
UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS flags = this.ComputeLeftToWrite();
if (this.m_Closed || ((size == 0) && (this.m_LeftToWrite != 0L)))
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "BeginWrite", "");
}
HttpResponseStreamAsyncResult result = new HttpResponseStreamAsyncResult(this, state, callback);
result.InvokeCallback(0);
return(result);
}
if ((this.m_LeftToWrite >= 0L) && (size > this.m_LeftToWrite))
{
throw new ProtocolViolationException(SR.GetString("net_entitytoobig"));
}
flags |= (this.m_LeftToWrite == size) ? UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.NONE : UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_MORE_DATA;
bool sentHeaders = this.m_HttpContext.Response.SentHeaders;
HttpResponseStreamAsyncResult asyncResult = new HttpResponseStreamAsyncResult(this, state, callback, buffer, offset, size, this.m_HttpContext.Response.BoundaryType == BoundaryType.Chunked, sentHeaders);
try
{
if (!sentHeaders)
{
num = this.m_HttpContext.Response.SendHeaders(null, asyncResult, flags);
}
else
{
this.m_HttpContext.EnsureBoundHandle();
num = UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody(this.m_HttpContext.RequestQueueHandle, this.m_HttpContext.RequestId, (uint)flags, asyncResult.dataChunkCount, asyncResult.pDataChunks, null, SafeLocalFree.Zero, 0, asyncResult.m_pOverlapped, null);
}
}
catch (Exception exception)
{
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "BeginWrite", exception);
}
asyncResult.InternalCleanup();
this.m_HttpContext.Abort();
throw;
}
switch (num)
{
case 0:
case 0x3e5:
break;
default:
asyncResult.InternalCleanup();
if (!this.m_HttpContext.Listener.IgnoreWriteExceptions || !sentHeaders)
{
Exception e = new HttpListenerException((int)num);
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "BeginWrite", e);
}
this.m_HttpContext.Abort();
throw e;
}
break;
}
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "BeginWrite", "");
}
return(asyncResult);
}
//Caution, this will return ipv6 addresses if the OS supports it. This shouldn't be called by the public apis.
internal static IPHostEntry InternalResolveFast(string hostName, int timeout, out bool timedOut)
{
GlobalLog.Assert(hostName != null, "hostName == null");
GlobalLog.Print("Dns.InternalResolveFase: " + hostName);
//
// the differences between this method and the previous InternalResolve() are:
//
// 1) we don't throw any exceptions
// 2) we don't do a reverse lookup for address strings, we just use them
//
// IPv6 Changes: It is not practical to embed the code for GetAddrInfo here, instead
// we call it and catch any exceptions.
//
// Timeout: Supports a timeout by offloading work to another thread if necessary.
//
// We can't abort a DNS lookup so if we think might need to, run it on another thread.
// According to MSDN the max time is 17 seconds. Use 18 and say 20.
// Also: MSDN describes how one lookup can result in a string of queries. It's unclear whether
// those would be run in series, extending the possible time this will take, or whether it will always
// give up after 17 seconds. For now assume that 17 seconds is the absolute max.
bool mightTimeOut = 18000 >= (uint)timeout && timeout != Timeout.Infinite;
timedOut = false;
if (hostName.Length > 0 && hostName.Length <= MaxHostName)
{
// IP Address?
IPAddress address;
if (TryParseAsIP(hostName, out address))
{
IPHostEntry ipHostEntry = new IPHostEntry();
ipHostEntry.HostName = address.ToString();
ipHostEntry.Aliases = new string[0];
ipHostEntry.AddressList = new IPAddress[] { address };
GlobalLog.Print("Dns::InternalResolveFast() returned address:" + address.ToString());
return(ipHostEntry);
}
// Looks like a hostname (or failed address parsing)
if (Socket.OSSupportsIPv6)
{
try
{
// we will no longer offload to a thread, due to the consequence of having a threadpool thread
//block on another threadpool thread. In addition, even w/ the DNS server functioning, we run
// the risk of having too many of these queued up, causing requests to fail w/ an unable to resolve
//exception.
//I'm leaving the code commented out to possibly reuse in our async case.
// if (!mightTimeOut)
// {
return(GetAddrInfo(hostName));
// }
/* else
* {
* AsyncDnsContext dnsContext = new AsyncDnsContext(hostName);
* dnsContext.Offload(new WaitCallback(OffloadedGetAddrInfo));
* return (IPHostEntry) dnsContext.Wait(timeout, out timedOut);
* }
*/
}
catch (Exception e)
{
GlobalLog.Print("Dns::InternalResolveFast() GetAddrInfo() threw: " + e.Message);
}
}
else
{
//
// we duplicate the code in GetHostByName() to avoid
// having to catch the thrown exception
//
IntPtr nativePointer;
//if (!mightTimeOut)
//{
nativePointer = UnsafeNclNativeMethods.OSSOCK.gethostbyname(hostName);
//}
/*
* else
* {
* AsyncDnsContext dnsContext = new AsyncDnsContext(hostName);
* dnsContext.Offload(new WaitCallback(OffloadedGetHostByName));
* object result = dnsContext.Wait(timeout, out timedOut);
* nativePointer = result == null ? IntPtr.Zero : (IntPtr) result;
* }
*/
if (nativePointer != IntPtr.Zero)
{
GlobalLog.Print("Dns::InternalResolveFast() gethostbyname() returned nativePointer:" + nativePointer.ToString());
return(NativeToHostEntry(nativePointer));
}
}
}
GlobalLog.Print("Dns::InternalResolveFast() returning null");
if (Logging.On)
{
Logging.Exit(Logging.Sockets, "DNS", "InternalResolveFast", null);
}
return(null);
}
public override IAsyncResult BeginWrite(byte[] buffer, int offset, int size, AsyncCallback callback, object state)
{
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::BeginWrite() buffer.Length:" + buffer.Length + " size:" + size + " offset:" + offset);
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (offset < 0 || offset > buffer.Length)
{
throw new ArgumentOutOfRangeException("offset");
}
if (size < 0 || size > buffer.Length - offset)
{
throw new ArgumentOutOfRangeException("size");
}
UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS flags = ComputeLeftToWrite();
if (m_Closed || (size == 0 && m_LeftToWrite != 0))
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "BeginWrite", "");
}
HttpResponseStreamAsyncResult result = new HttpResponseStreamAsyncResult(this, state, callback);
result.InvokeCallback((uint)0);
return(result);
}
if (m_LeftToWrite >= 0 && size > m_LeftToWrite)
{
throw new ProtocolViolationException(SR.GetString(SR.net_entitytoobig));
}
uint statusCode;
uint bytesSent = 0;
flags |= m_LeftToWrite == size ? UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.NONE : UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_MORE_DATA;
bool sentHeaders = m_HttpContext.Response.SentHeaders;
HttpResponseStreamAsyncResult asyncResult = new HttpResponseStreamAsyncResult(this, state, callback, buffer, offset, size, m_HttpContext.Response.BoundaryType == BoundaryType.Chunked, sentHeaders);
// Update m_LeftToWrite now so we can queue up additional BeginWrite's without waiting for EndWrite.
UpdateAfterWrite((uint)((m_HttpContext.Response.BoundaryType == BoundaryType.Chunked) ? 0 : size));
try {
if (!sentHeaders)
{
statusCode = m_HttpContext.Response.SendHeaders(null, asyncResult, flags, false);
}
else
{
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::BeginWrite() calling UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody");
m_HttpContext.EnsureBoundHandle();
statusCode =
UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody(
m_HttpContext.RequestQueueHandle,
m_HttpContext.RequestId,
(uint)flags,
asyncResult.dataChunkCount,
asyncResult.pDataChunks,
&bytesSent,
SafeLocalFree.Zero,
0,
asyncResult.m_pOverlapped,
null);
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::BeginWrite() call to UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody returned:" + statusCode);
}
}
catch (Exception e) {
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "BeginWrite", e);
}
asyncResult.InternalCleanup();
m_Closed = true;
m_HttpContext.Abort();
throw;
}
if (statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS && statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_IO_PENDING)
{
asyncResult.InternalCleanup();
if (m_HttpContext.Listener.IgnoreWriteExceptions && sentHeaders)
{
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::BeginWrite() suppressing error");
}
else
{
Exception exception = new HttpListenerException((int)statusCode);
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "BeginWrite", exception);
}
m_Closed = true;
m_HttpContext.Abort();
throw exception;
}
}
if (statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS && HttpListener.SkipIOCPCallbackOnSuccess)
{
// IO operation completed synchronously - callback won't be called to signal completion.
asyncResult.IOCompleted(statusCode, bytesSent);
}
// Last write, cache it for special cancelation handling.
if ((flags & UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_MORE_DATA) == 0)
{
m_LastWrite = asyncResult;
}
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "BeginWrite", "");
}
return(asyncResult);
}
public override void Write(byte[] buffer, int offset, int size)
{
if (Logging.On)
{
Logging.Enter(Logging.HttpListener, this, "Write", "");
}
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::Write() buffer.Length:" + buffer.Length + " size:" + size + " offset:" + offset);
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (offset < 0 || offset > buffer.Length)
{
throw new ArgumentOutOfRangeException("offset");
}
if (size < 0 || size > buffer.Length - offset)
{
throw new ArgumentOutOfRangeException("size");
}
UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS flags = ComputeLeftToWrite();
if (m_Closed || (size == 0 && m_LeftToWrite != 0))
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Write", "");
}
return;
}
if (m_LeftToWrite >= 0 && size > m_LeftToWrite)
{
throw new ProtocolViolationException(SR.GetString(SR.net_entitytoobig));
}
uint statusCode;
uint dataToWrite = (uint)size;
SafeLocalFree bufferAsIntPtr = null;
IntPtr pBufferAsIntPtr = IntPtr.Zero;
bool sentHeaders = m_HttpContext.Response.SentHeaders;
try {
if (size == 0)
{
statusCode = m_HttpContext.Response.SendHeaders(null, null, flags, false);
}
else
{
fixed(byte *pDataBuffer = buffer)
{
byte *pBuffer = pDataBuffer;
if (m_HttpContext.Response.BoundaryType == BoundaryType.Chunked)
{
//
string chunkHeader = size.ToString("x", CultureInfo.InvariantCulture);
dataToWrite = dataToWrite + (uint)(chunkHeader.Length + 4);
bufferAsIntPtr = SafeLocalFree.LocalAlloc((int)dataToWrite);
pBufferAsIntPtr = bufferAsIntPtr.DangerousGetHandle();
for (int i = 0; i < chunkHeader.Length; i++)
{
Marshal.WriteByte(pBufferAsIntPtr, i, (byte)chunkHeader[i]);
}
Marshal.WriteInt16(pBufferAsIntPtr, chunkHeader.Length, 0x0A0D);
Marshal.Copy(buffer, offset, IntPtrHelper.Add(pBufferAsIntPtr, chunkHeader.Length + 2), size);
Marshal.WriteInt16(pBufferAsIntPtr, (int)(dataToWrite - 2), 0x0A0D);
pBuffer = (byte *)pBufferAsIntPtr;
offset = 0;
}
UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK dataChunk = new UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK();
dataChunk.DataChunkType = UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
dataChunk.pBuffer = (byte *)(pBuffer + offset);
dataChunk.BufferLength = dataToWrite;
flags |= m_LeftToWrite == size ? UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.NONE : UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_MORE_DATA;
if (!sentHeaders)
{
statusCode = m_HttpContext.Response.SendHeaders(&dataChunk, null, flags, false);
}
else
{
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::Write() calling UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody");
statusCode =
UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody(
m_HttpContext.RequestQueueHandle,
m_HttpContext.RequestId,
(uint)flags,
1,
&dataChunk,
null,
SafeLocalFree.Zero,
0,
null,
null);
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::Write() call to UnsafeNclNativeMethods.HttpApi.HttpSendResponseEntityBody returned:" + statusCode);
if (m_HttpContext.Listener.IgnoreWriteExceptions)
{
GlobalLog.Print("HttpResponseStream#" + ValidationHelper.HashString(this) + "::Write() suppressing error");
statusCode = UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS;
}
}
}
}
}
finally {
if (bufferAsIntPtr != null)
{
// free unmanaged buffer
bufferAsIntPtr.Close();
}
}
if (statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS && statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_HANDLE_EOF)
{
Exception exception = new HttpListenerException((int)statusCode);
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "Write", exception);
}
m_Closed = true;
m_HttpContext.Abort();
throw exception;
}
UpdateAfterWrite(dataToWrite);
if (Logging.On)
{
Logging.Dump(Logging.HttpListener, this, "Write", buffer, offset, (int)dataToWrite);
}
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Write", "");
}
}
public override IAsyncResult BeginRead(byte[] buffer, int offset, int size, AsyncCallback callback, object state)
{
if (Logging.On)
{
Logging.Enter(Logging.HttpListener, this, "BeginRead", "");
}
GlobalLog.Print("HttpRequestStream#" + ValidationHelper.HashString(this) + "::BeginRead() buffer.Length:" + buffer.Length + " size:" + size + " offset:" + offset);
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (offset < 0 || offset > buffer.Length)
{
throw new ArgumentOutOfRangeException("offset");
}
if (size < 0 || size > buffer.Length - offset)
{
throw new ArgumentOutOfRangeException("size");
}
if (size == 0 || m_Closed)
{
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "BeginRead", "");
}
HttpRequestStreamAsyncResult result = new HttpRequestStreamAsyncResult(this, state, callback);
result.InvokeCallback((uint)0);
return(result);
}
HttpRequestStreamAsyncResult asyncResult = null;
uint dataRead = 0;
if (m_DataChunkIndex != -1)
{
dataRead = UnsafeNclNativeMethods.HttpApi.GetChunks(m_HttpContext.Request.RequestBuffer, m_HttpContext.Request.OriginalBlobAddress, ref m_DataChunkIndex, ref m_DataChunkOffset, buffer, offset, size);
if (m_DataChunkIndex != -1 && dataRead == size)
{
asyncResult = new HttpRequestStreamAsyncResult(this, state, callback, buffer, offset, (uint)size, 0);
asyncResult.InvokeCallback(dataRead);
}
}
if (m_DataChunkIndex == -1 && dataRead < size)
{
GlobalLog.Print("HttpRequestStream#" + ValidationHelper.HashString(this) + "::BeginRead() size:" + size + " offset:" + offset);
uint statusCode = 0;
offset += (int)dataRead;
size -= (int)dataRead;
//the http.sys team recommends that we limit the size to 128kb
if (size > MaxReadSize)
{
size = MaxReadSize;
}
asyncResult = new HttpRequestStreamAsyncResult(this, state, callback, buffer, offset, (uint)size, dataRead);
uint bytesReturned;
try
{
fixed(byte *pBuffer = buffer)
{
// issue unmanaged blocking call
GlobalLog.Print("HttpRequestStream#" + ValidationHelper.HashString(this) + "::BeginRead() calling UnsafeNclNativeMethods.HttpApi.HttpReceiveRequestEntityBody");
m_HttpContext.EnsureBoundHandle();
uint flags = 0;
if (!m_InOpaqueMode)
{
flags = (uint)UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.HTTP_RECEIVE_REQUEST_FLAG_COPY_BODY;
}
statusCode =
UnsafeNclNativeMethods.HttpApi.HttpReceiveRequestEntityBody(
m_HttpContext.RequestQueueHandle,
m_HttpContext.RequestId,
flags,
asyncResult.m_pPinnedBuffer,
(uint)size,
out bytesReturned,
asyncResult.m_pOverlapped);
GlobalLog.Print("HttpRequestStream#" + ValidationHelper.HashString(this) + "::BeginRead() call to UnsafeNclNativeMethods.HttpApi.HttpReceiveRequestEntityBody returned:" + statusCode + " dataRead:" + dataRead);
}
}
catch (Exception e) {
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "BeginRead", e);
}
asyncResult.InternalCleanup();
throw;
}
if (statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS && statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_IO_PENDING)
{
asyncResult.InternalCleanup();
if (statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_HANDLE_EOF)
{
asyncResult = new HttpRequestStreamAsyncResult(this, state, callback, dataRead);
asyncResult.InvokeCallback((uint)0);
}
else
{
Exception exception = new HttpListenerException((int)statusCode);
if (Logging.On)
{
Logging.Exception(Logging.HttpListener, this, "BeginRead", exception);
}
asyncResult.InternalCleanup();
throw exception;
}
}
else if (statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
// IO operation completed synchronously - callback won't be called to signal completion.
asyncResult.IOCompleted(statusCode, bytesReturned);
}
}
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "BeginRead", "");
}
return(asyncResult);
}
