void IHttpResetFeature.Reset(int errorCode)
{
_requestContext.SetResetCode(errorCode);
_requestContext.Abort();
}
void IHttpRequestLifetimeFeature.Abort() => _requestContext.Abort();
// We never expect endOfRequest and data at the same time
private unsafe void FlushInternal(bool endOfRequest, ArraySegment <byte> data = new ArraySegment <byte>())
{
Debug.Assert(!(endOfRequest && data.Count > 0), "Data is not supported at the end of the request.");
if (_skipWrites)
{
return;
}
var started = _requestContext.Response.HasStarted;
if (data.Count == 0 && started && !endOfRequest)
{
// No data to send and we've already sent the headers
return;
}
// Make sure all validation is performed before this computes the headers
var flags = ComputeLeftToWrite(data.Count, endOfRequest);
if (endOfRequest && _leftToWrite > 0)
{
if (!RequestContext.DisconnectToken.IsCancellationRequested)
{
// This is logged rather than thrown because it is too late for an exception to be visible in user code.
Logger.LogError(LoggerEventIds.FewerBytesThanExpected, "ResponseStream::Dispose; Fewer bytes were written than were specified in the Content-Length.");
}
_requestContext.Abort();
return;
}
uint statusCode = 0;
HttpApiTypes.HTTP_DATA_CHUNK[] dataChunks;
var pinnedBuffers = PinDataBuffers(endOfRequest, data, out dataChunks);
try
{
if (!started)
{
statusCode = _requestContext.Response.SendHeaders(dataChunks, null, flags, false);
}
else
{
fixed(HttpApiTypes.HTTP_DATA_CHUNK *pDataChunks = dataChunks)
{
statusCode = HttpApi.HttpSendResponseEntityBody(
RequestQueueHandle,
RequestId,
(uint)flags,
(ushort)dataChunks.Length,
pDataChunks,
null,
IntPtr.Zero,
0,
SafeNativeOverlapped.Zero,
IntPtr.Zero);
}
}
}
finally
{
FreeDataBuffers(pinnedBuffers);
}
if (statusCode != ErrorCodes.ERROR_SUCCESS && statusCode != ErrorCodes.ERROR_HANDLE_EOF
// Don't throw for disconnects, we were already finished with the response.
&& (!endOfRequest || (statusCode != ErrorCodes.ERROR_CONNECTION_INVALID && statusCode != ErrorCodes.ERROR_INVALID_PARAMETER)))
{
if (ThrowWriteExceptions)
{
var exception = new IOException(string.Empty, new HttpSysException((int)statusCode));
Logger.LogError(LoggerEventIds.WriteError, exception, "Flush");
Abort();
throw exception;
}
else
{
// Abort the request but do not close the stream, let future writes complete silently
Logger.LogDebug(LoggerEventIds.WriteErrorIgnored, $"Flush; Ignored write exception: {statusCode}");
Abort(dispose: false);
}
}
}
