public void WriteResponseHeaders(int statusCode, string? reasonPhrase, HttpResponseHeaders responseHeaders, bool autoChunk, bool appCompleted)
{
lock (_dataWriterLock)
{
// The HPACK header compressor is stateful, if we compress headers for an aborted stream we must send them.
// Optimize for not compressing or sending them.
if (_streamCompleted)
{
return;
}
// If the responseHeaders will be written as the final HEADERS frame then
// set END_STREAM on the HEADERS frame. This avoids the need to write an
// empty DATA frame with END_STREAM.
//
// The headers will be the final frame if:
// 1. There is no content
// 2. There is no trailing HEADERS frame.
Http2HeadersFrameFlags http2HeadersFrame;
if (appCompleted && !_startedWritingDataFrames && (_stream.ResponseTrailers == null || _stream.ResponseTrailers.Count == 0))
{
_streamEnded = true;
_stream.DecrementActiveClientStreamCount();
http2HeadersFrame = Http2HeadersFrameFlags.END_STREAM;
}
else
{
http2HeadersFrame = Http2HeadersFrameFlags.NONE;
}
_frameWriter.WriteResponseHeaders(StreamId, statusCode, http2HeadersFrame, responseHeaders);
}
}