|
private static IOCompleted ( |
||
| asyncResult | ||
| errorCode | uint | |
| numBytes | uint | |
| Результат | void | |
/*
12.3
HttpSendHttpResponse() and HttpSendResponseEntityBody() Flag Values.
The following flags can be used on calls to HttpSendHttpResponse() and HttpSendResponseEntityBody() API calls:
#define HTTP_SEND_RESPONSE_FLAG_DISCONNECT 0x00000001
#define HTTP_SEND_RESPONSE_FLAG_MORE_DATA 0x00000002
#define HTTP_SEND_RESPONSE_FLAG_RAW_HEADER 0x00000004
#define HTTP_SEND_RESPONSE_FLAG_VALID 0x00000007
HTTP_SEND_RESPONSE_FLAG_DISCONNECT:
specifies that the network connection should be disconnected immediately after
sending the response, overriding the HTTP protocol's persistent connection features.
HTTP_SEND_RESPONSE_FLAG_MORE_DATA:
specifies that additional entity body data will be sent by the caller. Thus,
the last call HttpSendResponseEntityBody for a RequestId, will have this flag reset.
HTTP_SEND_RESPONSE_RAW_HEADER:
specifies that a caller of HttpSendResponseEntityBody() is intentionally omitting
a call to HttpSendHttpResponse() in order to bypass normal header processing. The
actual HTTP header will be generated by the application and sent as entity body.
This flag should be passed on the first call to HttpSendResponseEntityBody, and
not after. Thus, flag is not applicable to HttpSendHttpResponse.
*/
internal unsafe uint SendHeaders(UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK* pDataChunk,
HttpResponseStreamAsyncResult asyncResult,
UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS flags,
bool isWebSocketHandshake) {
GlobalLog.Print("HttpListenerResponse#" + ValidationHelper.HashString(this) + "::SendHeaders() pDataChunk:" + ValidationHelper.ToString((IntPtr)pDataChunk) + " asyncResult:" + ValidationHelper.ToString(asyncResult));
GlobalLog.Assert(!SentHeaders, "HttpListenerResponse#{0}::SendHeaders()|SentHeaders is true.", ValidationHelper.HashString(this));
if (StatusCode == (int)HttpStatusCode.Unauthorized) { // User set 401
// Using the configured Auth schemes, populate the auth challenge headers. This is for scenarios where
// Anonymous access is allowed for some resources, but the server later determines that authorization
// is required for this request.
HttpListenerContext.SetAuthenticationHeaders();
}
// Log headers
if(Logging.On) {
StringBuilder sb = new StringBuilder("HttpListenerResponse Headers:\n");
for (int i=0; i<Headers.Count; i++) {
sb.Append("\t");
sb.Append(Headers.GetKey(i));
sb.Append(" : ");
sb.Append(Headers.Get(i));
sb.Append("\n");
}
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", sb.ToString());
}
m_ResponseState = ResponseState.SentHeaders;
/*
if (m_BoundaryType==BoundaryType.Raw) {
use HTTP_SEND_RESPONSE_FLAG_RAW_HEADER;
}
*/
uint statusCode;
uint bytesSent;
List<GCHandle> pinnedHeaders = SerializeHeaders(ref m_NativeResponse.Headers, isWebSocketHandshake);
try {
if (pDataChunk!=null) {
m_NativeResponse.EntityChunkCount = 1;
m_NativeResponse.pEntityChunks = pDataChunk;
}
else if (asyncResult!=null && asyncResult.pDataChunks!=null) {
m_NativeResponse.EntityChunkCount = asyncResult.dataChunkCount;
m_NativeResponse.pEntityChunks = asyncResult.pDataChunks;
}
else {
m_NativeResponse.EntityChunkCount = 0;
m_NativeResponse.pEntityChunks = null;
}
GlobalLog.Print("HttpListenerResponse#" + ValidationHelper.HashString(this) + "::SendHeaders() calling UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse flags:" + flags);
if (StatusDescription.Length>0) {
byte[] statusDescriptionBytes = new byte[WebHeaderCollection.HeaderEncoding.GetByteCount(StatusDescription)];
fixed (byte* pStatusDescription = statusDescriptionBytes) {
m_NativeResponse.ReasonLength = (ushort)statusDescriptionBytes.Length;
WebHeaderCollection.HeaderEncoding.GetBytes(StatusDescription, 0, statusDescriptionBytes.Length, statusDescriptionBytes, 0);
m_NativeResponse.pReason = (sbyte*)pStatusDescription;
fixed (UnsafeNclNativeMethods.HttpApi.HTTP_RESPONSE* pResponse = &m_NativeResponse) {
if (asyncResult != null)
{
HttpListenerContext.EnsureBoundHandle();
}
statusCode =
UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse(
HttpListenerContext.RequestQueueHandle,
HttpListenerRequest.RequestId,
(uint)flags,
pResponse,
null,
&bytesSent,
SafeLocalFree.Zero,
0,
asyncResult==null ? null : asyncResult.m_pOverlapped,
null );
if (asyncResult != null &&
statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
asyncResult.IOCompleted(statusCode, bytesSent);
// IO operation completed synchronously - callback won't be called to signal completion.
}
}
}
}
else {
fixed (UnsafeNclNativeMethods.HttpApi.HTTP_RESPONSE* pResponse = &m_NativeResponse) {
if (asyncResult != null)
{
HttpListenerContext.EnsureBoundHandle();
}
statusCode =
UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse(
HttpListenerContext.RequestQueueHandle,
HttpListenerRequest.RequestId,
(uint)flags,
pResponse,
null,
&bytesSent,
SafeLocalFree.Zero,
0,
asyncResult==null ? null : asyncResult.m_pOverlapped,
null );
if (asyncResult != null &&
statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
asyncResult.IOCompleted(statusCode, bytesSent);
// IO operation completed synchronously - callback won't be called to signal completion.
}
}
}
GlobalLog.Print("HttpListenerResponse#" + ValidationHelper.HashString(this) + "::SendHeaders() call to UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse returned:" + statusCode);
}
finally {
FreePinnedHeaders(pinnedHeaders);
}
return statusCode;
}
private IAsyncResult BeginWriteCore(byte[] buffer, int offset, int size, AsyncCallback callback, object state)
{
Interop.HttpApi.HTTP_FLAGS flags = ComputeLeftToWrite();
if (_closed || (size == 0 && _leftToWrite != 0))
{
HttpResponseStreamAsyncResult result = new HttpResponseStreamAsyncResult(this, state, callback);
result.InvokeCallback((uint)0);
return(result);
}
if (_leftToWrite >= 0 && size > _leftToWrite)
{
throw new ProtocolViolationException(SR.net_entitytoobig);
}
uint statusCode;
uint bytesSent = 0;
flags |= _leftToWrite == size ? Interop.HttpApi.HTTP_FLAGS.NONE : Interop.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_MORE_DATA;
bool sentHeaders = _httpContext.Response.SentHeaders;
HttpResponseStreamAsyncResult asyncResult = new HttpResponseStreamAsyncResult(this, state, callback, buffer, offset, size, _httpContext.Response.BoundaryType == BoundaryType.Chunked, sentHeaders, _httpContext.RequestQueueBoundHandle);
// Update m_LeftToWrite now so we can queue up additional BeginWrite's without waiting for EndWrite.
UpdateAfterWrite((uint)((_httpContext.Response.BoundaryType == BoundaryType.Chunked) ? 0 : size));
try
{
if (!sentHeaders)
{
statusCode = _httpContext.Response.SendHeaders(null, asyncResult, flags, false);
}
else
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this, "Calling Interop.HttpApi.HttpSendResponseEntityBody");
}
statusCode =
Interop.HttpApi.HttpSendResponseEntityBody(
_httpContext.RequestQueueHandle,
_httpContext.RequestId,
(uint)flags,
asyncResult.dataChunkCount,
asyncResult.pDataChunks,
&bytesSent,
SafeLocalAllocHandle.Zero,
0,
asyncResult._pOverlapped,
null);
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this, "Call to Interop.HttpApi.HttpSendResponseEntityBody returned:" + statusCode);
}
}
}
catch (Exception e)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Error(this, e.ToString());
}
asyncResult.InternalCleanup();
_closed = true;
_httpContext.Abort();
throw;
}
if (statusCode != Interop.HttpApi.ERROR_SUCCESS && statusCode != Interop.HttpApi.ERROR_IO_PENDING)
{
asyncResult.InternalCleanup();
if (_httpContext.Listener.IgnoreWriteExceptions && sentHeaders)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this, "BeginWrite() Suppressing error");
}
}
else
{
Exception exception = new HttpListenerException((int)statusCode);
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Error(this, exception.ToString());
}
_closed = true;
_httpContext.Abort();
throw exception;
}
}
if (statusCode == Interop.HttpApi.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 & Interop.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_MORE_DATA) == 0)
{
_lastWrite = asyncResult;
}
return(asyncResult);
}
public override IAsyncResult BeginWrite(byte[] buffer, int offset, int size, AsyncCallback callback, object state)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "buffer.Length:" + buffer.Length + " size:" + size + " offset:" + offset);
if (buffer == null)
{
throw new ArgumentNullException(nameof(buffer));
}
if (offset < 0 || offset > buffer.Length)
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
if (size < 0 || size > buffer.Length - offset)
{
throw new ArgumentOutOfRangeException(nameof(size));
}
Interop.HttpApi.HTTP_FLAGS flags = ComputeLeftToWrite();
if (_closed || (size == 0 && _leftToWrite != 0))
{
if (NetEventSource.IsEnabled) NetEventSource.Exit(this);
HttpResponseStreamAsyncResult result = new HttpResponseStreamAsyncResult(this, state, callback);
result.InvokeCallback((uint)0);
return result;
}
if (_leftToWrite >= 0 && size > _leftToWrite)
{
throw new ProtocolViolationException(SR.net_entitytoobig);
}
uint statusCode;
uint bytesSent = 0;
flags |= _leftToWrite == size ? Interop.HttpApi.HTTP_FLAGS.NONE : Interop.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_MORE_DATA;
bool sentHeaders = _httpContext.Response.SentHeaders;
HttpResponseStreamAsyncResult asyncResult = new HttpResponseStreamAsyncResult(this, state, callback, buffer, offset, size, _httpContext.Response.BoundaryType == BoundaryType.Chunked, sentHeaders, _httpContext.RequestQueueBoundHandle);
// Update m_LeftToWrite now so we can queue up additional BeginWrite's without waiting for EndWrite.
UpdateAfterWrite((uint)((_httpContext.Response.BoundaryType == BoundaryType.Chunked) ? 0 : size));
try
{
if (!sentHeaders)
{
statusCode = _httpContext.Response.SendHeaders(null, asyncResult, flags, false);
}
else
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "Calling Interop.HttpApi.HttpSendResponseEntityBody");
statusCode =
Interop.HttpApi.HttpSendResponseEntityBody(
_httpContext.RequestQueueHandle,
_httpContext.RequestId,
(uint)flags,
asyncResult.dataChunkCount,
asyncResult.pDataChunks,
&bytesSent,
SafeLocalAllocHandle.Zero,
0,
asyncResult._pOverlapped,
null);
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "Call to Interop.HttpApi.HttpSendResponseEntityBody returned:" + statusCode);
}
}
catch (Exception e)
{
if (NetEventSource.IsEnabled) NetEventSource.Error(this, e.ToString());
asyncResult.InternalCleanup();
_closed = true;
_httpContext.Abort();
throw;
}
if (statusCode != Interop.HttpApi.ERROR_SUCCESS && statusCode != Interop.HttpApi.ERROR_IO_PENDING)
{
asyncResult.InternalCleanup();
if (_httpContext.Listener.IgnoreWriteExceptions && sentHeaders)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "BeginWrite() Suppressing error");
}
else
{
Exception exception = new HttpListenerException((int)statusCode);
if (NetEventSource.IsEnabled) NetEventSource.Error(this, exception.ToString());
_closed = true;
_httpContext.Abort();
throw exception;
}
}
if (statusCode == Interop.HttpApi.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 & Interop.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_MORE_DATA) == 0)
{
_lastWrite = asyncResult;
}
if (NetEventSource.IsEnabled) NetEventSource.Exit(this);
return asyncResult;
}
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);
}
/*
* 12.3
* HttpSendHttpResponse() and HttpSendResponseEntityBody() Flag Values.
* The following flags can be used on calls to HttpSendHttpResponse() and HttpSendResponseEntityBody() API calls:
*
#define HTTP_SEND_RESPONSE_FLAG_DISCONNECT 0x00000001
#define HTTP_SEND_RESPONSE_FLAG_MORE_DATA 0x00000002
#define HTTP_SEND_RESPONSE_FLAG_RAW_HEADER 0x00000004
#define HTTP_SEND_RESPONSE_FLAG_VALID 0x00000007
*
* HTTP_SEND_RESPONSE_FLAG_DISCONNECT:
* specifies that the network connection should be disconnected immediately after
* sending the response, overriding the HTTP protocol's persistent connection features.
* HTTP_SEND_RESPONSE_FLAG_MORE_DATA:
* specifies that additional entity body data will be sent by the caller. Thus,
* the last call HttpSendResponseEntityBody for a RequestId, will have this flag reset.
* HTTP_SEND_RESPONSE_RAW_HEADER:
* specifies that a caller of HttpSendResponseEntityBody() is intentionally omitting
* a call to HttpSendHttpResponse() in order to bypass normal header processing. The
* actual HTTP header will be generated by the application and sent as entity body.
* This flag should be passed on the first call to HttpSendResponseEntityBody, and
* not after. Thus, flag is not applicable to HttpSendHttpResponse.
*/
internal unsafe uint SendHeaders(Interop.HttpApi.HTTP_DATA_CHUNK *pDataChunk,
HttpResponseStreamAsyncResult asyncResult,
Interop.HttpApi.HTTP_FLAGS flags,
bool isWebSocketHandshake)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"pDataChunk: { ((IntPtr)pDataChunk)}, asyncResult: {asyncResult}");
}
Debug.Assert(!SentHeaders, "SentHeaders is true.");
if (StatusCode == (int)HttpStatusCode.Unauthorized)
{
// User set 401
// Using the configured Auth schemes, populate the auth challenge headers. This is for scenarios where
// Anonymous access is allowed for some resources, but the server later determines that authorization
// is required for this request.
HttpListenerContext.SetAuthenticationHeaders();
}
// Log headers
if (NetEventSource.IsEnabled)
{
StringBuilder sb = new StringBuilder("HttpListenerResponse Headers:\n");
for (int i = 0; i < Headers.Count; i++)
{
sb.Append("\t");
sb.Append(Headers.GetKey(i));
sb.Append(" : ");
sb.Append(Headers.Get(i));
sb.Append("\n");
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, sb.ToString());
}
}
_responseState = ResponseState.SentHeaders;
uint statusCode;
uint bytesSent;
List <GCHandle> pinnedHeaders = SerializeHeaders(ref _nativeResponse.Headers, isWebSocketHandshake);
try
{
if (pDataChunk != null)
{
_nativeResponse.EntityChunkCount = 1;
_nativeResponse.pEntityChunks = pDataChunk;
}
else if (asyncResult != null && asyncResult.pDataChunks != null)
{
_nativeResponse.EntityChunkCount = asyncResult.dataChunkCount;
_nativeResponse.pEntityChunks = asyncResult.pDataChunks;
}
else
{
_nativeResponse.EntityChunkCount = 0;
_nativeResponse.pEntityChunks = null;
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Calling Interop.HttpApi.HttpSendHttpResponse flags:" + flags);
}
if (StatusDescription.Length > 0)
{
byte[] statusDescriptionBytes = new byte[WebHeaderEncoding.GetByteCount(StatusDescription)];
fixed(byte *pStatusDescription = statusDescriptionBytes)
{
_nativeResponse.ReasonLength = (ushort)statusDescriptionBytes.Length;
WebHeaderEncoding.GetBytes(StatusDescription, 0, statusDescriptionBytes.Length, statusDescriptionBytes, 0);
_nativeResponse.pReason = (sbyte *)pStatusDescription;
fixed(Interop.HttpApi.HTTP_RESPONSE *pResponse = &_nativeResponse)
{
statusCode =
Interop.HttpApi.HttpSendHttpResponse(
HttpListenerContext.RequestQueueHandle,
HttpListenerRequest.RequestId,
(uint)flags,
pResponse,
null,
&bytesSent,
SafeLocalAllocHandle.Zero,
0,
asyncResult == null ? null : asyncResult._pOverlapped,
null);
if (asyncResult != null &&
statusCode == Interop.HttpApi.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
asyncResult.IOCompleted(statusCode, bytesSent);
// IO operation completed synchronously - callback won't be called to signal completion.
}
}
}
}
else
{
fixed(Interop.HttpApi.HTTP_RESPONSE *pResponse = &_nativeResponse)
{
statusCode =
Interop.HttpApi.HttpSendHttpResponse(
HttpListenerContext.RequestQueueHandle,
HttpListenerRequest.RequestId,
(uint)flags,
pResponse,
null,
&bytesSent,
SafeLocalAllocHandle.Zero,
0,
asyncResult == null ? null : asyncResult._pOverlapped,
null);
if (asyncResult != null &&
statusCode == Interop.HttpApi.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
asyncResult.IOCompleted(statusCode, bytesSent);
// IO operation completed synchronously - callback won't be called to signal completion.
}
}
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Call to Interop.HttpApi.HttpSendHttpResponse returned:" + statusCode);
}
}
finally
{
FreePinnedHeaders(pinnedHeaders);
}
return(statusCode);
}
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;
}
/*
* 12.3
* HttpSendHttpResponse() and HttpSendResponseEntityBody() Flag Values.
* The following flags can be used on calls to HttpSendHttpResponse() and HttpSendResponseEntityBody() API calls:
*
#define HTTP_SEND_RESPONSE_FLAG_DISCONNECT 0x00000001
#define HTTP_SEND_RESPONSE_FLAG_MORE_DATA 0x00000002
#define HTTP_SEND_RESPONSE_FLAG_RAW_HEADER 0x00000004
#define HTTP_SEND_RESPONSE_FLAG_VALID 0x00000007
*
* HTTP_SEND_RESPONSE_FLAG_DISCONNECT:
* specifies that the network connection should be disconnected immediately after
* sending the response, overriding the HTTP protocol's persistent connection features.
* HTTP_SEND_RESPONSE_FLAG_MORE_DATA:
* specifies that additional entity body data will be sent by the caller. Thus,
* the last call HttpSendResponseEntityBody for a RequestId, will have this flag reset.
* HTTP_SEND_RESPONSE_RAW_HEADER:
* specifies that a caller of HttpSendResponseEntityBody() is intentionally omitting
* a call to HttpSendHttpResponse() in order to bypass normal header processing. The
* actual HTTP header will be generated by the application and sent as entity body.
* This flag should be passed on the first call to HttpSendResponseEntityBody, and
* not after. Thus, flag is not applicable to HttpSendHttpResponse.
*/
internal unsafe uint SendHeaders(UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK *pDataChunk,
HttpResponseStreamAsyncResult asyncResult,
UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS flags,
bool isWebSocketHandshake)
{
GlobalLog.Print("HttpListenerResponse#" + ValidationHelper.HashString(this) + "::SendHeaders() pDataChunk:" + ValidationHelper.ToString((IntPtr)pDataChunk) + " asyncResult:" + ValidationHelper.ToString(asyncResult));
GlobalLog.Assert(!SentHeaders, "HttpListenerResponse#{0}::SendHeaders()|SentHeaders is true.", ValidationHelper.HashString(this));
if (StatusCode == (int)HttpStatusCode.Unauthorized) // User set 401
// Using the configured Auth schemes, populate the auth challenge headers. This is for scenarios where
// Anonymous access is allowed for some resources, but the server later determines that authorization
// is required for this request.
{
HttpListenerContext.SetAuthenticationHeaders();
}
// Log headers
if (Logging.On)
{
StringBuilder sb = new StringBuilder("HttpListenerResponse Headers:\n");
for (int i = 0; i < Headers.Count; i++)
{
sb.Append("\t");
sb.Append(Headers.GetKey(i));
sb.Append(" : ");
sb.Append(Headers.Get(i));
sb.Append("\n");
}
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", sb.ToString());
}
m_ResponseState = ResponseState.SentHeaders;
/*
* if (m_BoundaryType==BoundaryType.Raw) {
* use HTTP_SEND_RESPONSE_FLAG_RAW_HEADER;
* }
*/
uint statusCode;
uint bytesSent;
List <GCHandle> pinnedHeaders = SerializeHeaders(ref m_NativeResponse.Headers, isWebSocketHandshake);
try {
if (pDataChunk != null)
{
m_NativeResponse.EntityChunkCount = 1;
m_NativeResponse.pEntityChunks = pDataChunk;
}
else if (asyncResult != null && asyncResult.pDataChunks != null)
{
m_NativeResponse.EntityChunkCount = asyncResult.dataChunkCount;
m_NativeResponse.pEntityChunks = asyncResult.pDataChunks;
}
else
{
m_NativeResponse.EntityChunkCount = 0;
m_NativeResponse.pEntityChunks = null;
}
GlobalLog.Print("HttpListenerResponse#" + ValidationHelper.HashString(this) + "::SendHeaders() calling UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse flags:" + flags);
if (StatusDescription.Length > 0)
{
byte[] statusDescriptionBytes = new byte[WebHeaderCollection.HeaderEncoding.GetByteCount(StatusDescription)];
fixed(byte *pStatusDescription = statusDescriptionBytes)
{
m_NativeResponse.ReasonLength = (ushort)statusDescriptionBytes.Length;
WebHeaderCollection.HeaderEncoding.GetBytes(StatusDescription, 0, statusDescriptionBytes.Length, statusDescriptionBytes, 0);
m_NativeResponse.pReason = (sbyte *)pStatusDescription;
fixed(UnsafeNclNativeMethods.HttpApi.HTTP_RESPONSE *pResponse = &m_NativeResponse)
{
if (asyncResult != null)
{
HttpListenerContext.EnsureBoundHandle();
}
statusCode =
UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse(
HttpListenerContext.RequestQueueHandle,
HttpListenerRequest.RequestId,
(uint)flags,
pResponse,
null,
&bytesSent,
SafeLocalFree.Zero,
0,
asyncResult == null ? null : asyncResult.m_pOverlapped,
null);
if (asyncResult != null &&
statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
asyncResult.IOCompleted(statusCode, bytesSent);
// IO operation completed synchronously - callback won't be called to signal completion.
}
}
}
}
else
{
fixed(UnsafeNclNativeMethods.HttpApi.HTTP_RESPONSE *pResponse = &m_NativeResponse)
{
if (asyncResult != null)
{
HttpListenerContext.EnsureBoundHandle();
}
statusCode =
UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse(
HttpListenerContext.RequestQueueHandle,
HttpListenerRequest.RequestId,
(uint)flags,
pResponse,
null,
&bytesSent,
SafeLocalFree.Zero,
0,
asyncResult == null ? null : asyncResult.m_pOverlapped,
null);
if (asyncResult != null &&
statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
asyncResult.IOCompleted(statusCode, bytesSent);
// IO operation completed synchronously - callback won't be called to signal completion.
}
}
}
GlobalLog.Print("HttpListenerResponse#" + ValidationHelper.HashString(this) + "::SendHeaders() call to UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse returned:" + statusCode);
}
finally {
FreePinnedHeaders(pinnedHeaders);
}
return(statusCode);
}
/*
12.3
HttpSendHttpResponse() and HttpSendResponseEntityBody() Flag Values.
The following flags can be used on calls to HttpSendHttpResponse() and HttpSendResponseEntityBody() API calls:
#define HTTP_SEND_RESPONSE_FLAG_DISCONNECT 0x00000001
#define HTTP_SEND_RESPONSE_FLAG_MORE_DATA 0x00000002
#define HTTP_SEND_RESPONSE_FLAG_RAW_HEADER 0x00000004
#define HTTP_SEND_RESPONSE_FLAG_VALID 0x00000007
HTTP_SEND_RESPONSE_FLAG_DISCONNECT:
specifies that the network connection should be disconnected immediately after
sending the response, overriding the HTTP protocol's persistent connection features.
HTTP_SEND_RESPONSE_FLAG_MORE_DATA:
specifies that additional entity body data will be sent by the caller. Thus,
the last call HttpSendResponseEntityBody for a RequestId, will have this flag reset.
HTTP_SEND_RESPONSE_RAW_HEADER:
specifies that a caller of HttpSendResponseEntityBody() is intentionally omitting
a call to HttpSendHttpResponse() in order to bypass normal header processing. The
actual HTTP header will be generated by the application and sent as entity body.
This flag should be passed on the first call to HttpSendResponseEntityBody, and
not after. Thus, flag is not applicable to HttpSendHttpResponse.
*/
internal unsafe uint SendHeaders(Interop.HttpApi.HTTP_DATA_CHUNK* pDataChunk,
HttpResponseStreamAsyncResult asyncResult,
Interop.HttpApi.HTTP_FLAGS flags,
bool isWebSocketHandshake)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"pDataChunk: { ((IntPtr)pDataChunk)}, asyncResult: {asyncResult}");
Debug.Assert(!SentHeaders, "SentHeaders is true.");
if (StatusCode == (int)HttpStatusCode.Unauthorized)
{
// User set 401
// Using the configured Auth schemes, populate the auth challenge headers. This is for scenarios where
// Anonymous access is allowed for some resources, but the server later determines that authorization
// is required for this request.
HttpListenerContext.SetAuthenticationHeaders();
}
// Log headers
if (NetEventSource.IsEnabled)
{
StringBuilder sb = new StringBuilder("HttpListenerResponse Headers:\n");
for (int i = 0; i < Headers.Count; i++)
{
sb.Append("\t");
sb.Append(Headers.GetKey(i));
sb.Append(" : ");
sb.Append(Headers.Get(i));
sb.Append("\n");
}
if (NetEventSource.IsEnabled) NetEventSource.Info(this, sb.ToString());
}
_responseState = ResponseState.SentHeaders;
uint statusCode;
uint bytesSent;
List<GCHandle> pinnedHeaders = SerializeHeaders(ref _nativeResponse.Headers, isWebSocketHandshake);
try
{
if (pDataChunk != null)
{
_nativeResponse.EntityChunkCount = 1;
_nativeResponse.pEntityChunks = pDataChunk;
}
else if (asyncResult != null && asyncResult.pDataChunks != null)
{
_nativeResponse.EntityChunkCount = asyncResult.dataChunkCount;
_nativeResponse.pEntityChunks = asyncResult.pDataChunks;
}
else
{
_nativeResponse.EntityChunkCount = 0;
_nativeResponse.pEntityChunks = null;
}
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "Calling Interop.HttpApi.HttpSendHttpResponse flags:" + flags);
if (StatusDescription.Length > 0)
{
byte[] statusDescriptionBytes = new byte[WebHeaderEncoding.GetByteCount(StatusDescription)];
fixed (byte* pStatusDescription = statusDescriptionBytes)
{
_nativeResponse.ReasonLength = (ushort)statusDescriptionBytes.Length;
WebHeaderEncoding.GetBytes(StatusDescription, 0, statusDescriptionBytes.Length, statusDescriptionBytes, 0);
_nativeResponse.pReason = (sbyte*)pStatusDescription;
fixed (Interop.HttpApi.HTTP_RESPONSE* pResponse = &_nativeResponse)
{
statusCode =
Interop.HttpApi.HttpSendHttpResponse(
HttpListenerContext.RequestQueueHandle,
HttpListenerRequest.RequestId,
(uint)flags,
pResponse,
null,
&bytesSent,
SafeLocalAllocHandle.Zero,
0,
asyncResult == null ? null : asyncResult._pOverlapped,
null);
if (asyncResult != null &&
statusCode == Interop.HttpApi.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
asyncResult.IOCompleted(statusCode, bytesSent);
// IO operation completed synchronously - callback won't be called to signal completion.
}
}
}
}
else
{
fixed (Interop.HttpApi.HTTP_RESPONSE* pResponse = &_nativeResponse)
{
statusCode =
Interop.HttpApi.HttpSendHttpResponse(
HttpListenerContext.RequestQueueHandle,
HttpListenerRequest.RequestId,
(uint)flags,
pResponse,
null,
&bytesSent,
SafeLocalAllocHandle.Zero,
0,
asyncResult == null ? null : asyncResult._pOverlapped,
null);
if (asyncResult != null &&
statusCode == Interop.HttpApi.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
asyncResult.IOCompleted(statusCode, bytesSent);
// IO operation completed synchronously - callback won't be called to signal completion.
}
}
}
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "Call to Interop.HttpApi.HttpSendHttpResponse returned:" + statusCode);
}
finally
{
FreePinnedHeaders(pinnedHeaders);
}
return statusCode;
}
