1939return new FrameHeader(payloadLength, type, flags, streamId);

87private const int InitialConnectionBufferSize = FrameHeader.Size; 198FrameHeader.Size + (2 * FrameHeader.SettingLength) + 199FrameHeader.Size + FrameHeader.WindowUpdateLength; 208FrameHeader.WriteTo(_outgoingBuffer.AvailableSpan, 2 * FrameHeader.SettingLength, FrameType.Settings, FrameFlags.None, streamId: 0); 209_outgoingBuffer.Commit(FrameHeader.Size); 224FrameHeader.WriteTo(_outgoingBuffer.AvailableSpan, FrameHeader.WindowUpdateLength, FrameType.WindowUpdate, FrameFlags.None, streamId: 0); 225_outgoingBuffer.Commit(FrameHeader.Size); 404private async ValueTask<FrameHeader> ReadFrameAsync(bool initialFrame = false) 409if (_incomingBuffer.ActiveLength < FrameHeader.Size) 416_incomingBuffer.EnsureAvailableSpace(FrameHeader.Size); 432ThrowPrematureEOF(FrameHeader.Size); 436while (_incomingBuffer.ActiveLength < FrameHeader.Size); 440FrameHeader frameHeader = FrameHeader.ReadFrom(_incomingBuffer.ActiveSpan); 441if (frameHeader.PayloadLength > FrameHeader.MaxPayloadLength) 449_incomingBuffer.Discard(FrameHeader.Size); 452_incomingBuffer.Discard(FrameHeader.Size); 484FrameHeader frameHeader; 530if (_incomingBuffer.ActiveLength < FrameHeader.Size) 556while (_incomingBuffer.ActiveLength < FrameHeader.Size); 646private async ValueTask ProcessHeadersFrame(FrameHeader frameHeader) 731if (frameData.Length < FrameHeader.PriorityInfoLength) 737frameData = frameData.Slice(FrameHeader.PriorityInfoLength); 749private void ProcessAltSvcFrame(FrameHeader frameHeader) 779private void ProcessDataFrame(FrameHeader frameHeader) 808private void ProcessSettingsFrame(FrameHeader frameHeader, bool initialFrame = false) 964private void ProcessPriorityFrame(FrameHeader frameHeader) 968if (frameHeader.StreamId == 0 || frameHeader.PayloadLength != FrameHeader.PriorityInfoLength) 978private void ProcessPingFrame(FrameHeader frameHeader) 987if (frameHeader.PayloadLength != FrameHeader.PingLength) 995Debug.Assert(sizeof(long) == FrameHeader.PingLength); 996ReadOnlySpan<byte> pingContent = _incomingBuffer.ActiveSpan.Slice(0, FrameHeader.PingLength); 1012private void ProcessWindowUpdateFrame(FrameHeader frameHeader) 1016if (frameHeader.PayloadLength != FrameHeader.WindowUpdateLength) 1049private void ProcessRstStreamFrame(FrameHeader frameHeader) 1053if (frameHeader.PayloadLength != FrameHeader.RstStreamLength) 1080private void ProcessGoAwayFrame(FrameHeader frameHeader) 1115private (int lastStreamId, Http2ProtocolErrorCode errorCode) ReadGoAwayFrame(FrameHeader frameHeader) 1119if (frameHeader.PayloadLength < FrameHeader.GoAwayMinLength) 1289PerformWriteAsync(FrameHeader.Size, this, static (thisRef, writeBuffer) => 1293FrameHeader.WriteTo(writeBuffer.Span, 0, FrameType.Settings, FrameFlags.Ack, streamId: 0); 1301PerformWriteAsync(FrameHeader.Size + FrameHeader.PingLength, (thisRef: this, pingContent, isAck), static (state, writeBuffer) => 1305Debug.Assert(sizeof(long) == FrameHeader.PingLength); 1308FrameHeader.WriteTo(span, FrameHeader.PingLength, FrameType.Ping, state.isAck ? FrameFlags.Ack : FrameFlags.None, streamId: 0); 1309BinaryPrimitives.WriteInt64BigEndian(span.Slice(FrameHeader.Size), state.pingContent); 1315PerformWriteAsync(FrameHeader.Size + FrameHeader.RstStreamLength, (thisRef: this, streamId, errorCode), static (s, writeBuffer) => 1320FrameHeader.WriteTo(span, FrameHeader.RstStreamLength, FrameType.RstStream, FrameFlags.None, s.streamId); 1321BinaryPrimitives.WriteInt32BigEndian(span.Slice(FrameHeader.Size), (int)s.errorCode); 1649int frameCount = ((headerBytes.Length - 1) / FrameHeader.MaxPayloadLength) + 1; 1650int totalSize = headerBytes.Length + (frameCount * FrameHeader.Size); 1670(current, remaining) = SplitBuffer(s.headerBytes, FrameHeader.MaxPayloadLength); 1673FrameHeader.WriteTo(span, current.Length, FrameType.Headers, flags, s.http2Stream.StreamId); 1674span = span.Slice(FrameHeader.Size); 1682(current, remaining) = SplitBuffer(remaining, FrameHeader.MaxPayloadLength); 1685FrameHeader.WriteTo(span, current.Length, FrameType.Continuation, flags, s.http2Stream.StreamId); 1686span = span.Slice(FrameHeader.Size); 1719int frameSize = Math.Min(remaining.Length, FrameHeader.MaxPayloadLength); 1739await PerformWriteAsync(FrameHeader.Size + current.Length, (thisRef: this, streamId, current, flush), static (s, writeBuffer) => 1744FrameHeader.WriteTo(writeBuffer.Span, s.current.Length, FrameType.Data, FrameFlags.None, s.streamId); 1745s.current.CopyTo(writeBuffer.Slice(FrameHeader.Size)); 1760PerformWriteAsync(FrameHeader.Size, (thisRef: this, streamId), static (s, writeBuffer) => 1764FrameHeader.WriteTo(writeBuffer.Span, 0, FrameType.Data, FrameFlags.EndStream, s.streamId); 1773return PerformWriteAsync(FrameHeader.Size + FrameHeader.WindowUpdateLength, (thisRef: this, streamId, amount), static (s, writeBuffer) => 1778FrameHeader.WriteTo(span, FrameHeader.WindowUpdateLength, FrameType.WindowUpdate, FrameFlags.None, s.streamId); 1779BinaryPrimitives.WriteInt32BigEndian(span.Slice(FrameHeader.Size), s.amount); 1930public static FrameHeader ReadFrom(ReadOnlySpan<byte> buffer)