1938return new FrameHeader(payloadLength, type, flags, streamId);

86private const int InitialConnectionBufferSize = FrameHeader.Size; 197FrameHeader.Size + (2 * FrameHeader.SettingLength) + 198FrameHeader.Size + FrameHeader.WindowUpdateLength; 207FrameHeader.WriteTo(_outgoingBuffer.AvailableSpan, 2 * FrameHeader.SettingLength, FrameType.Settings, FrameFlags.None, streamId: 0); 208_outgoingBuffer.Commit(FrameHeader.Size); 223FrameHeader.WriteTo(_outgoingBuffer.AvailableSpan, FrameHeader.WindowUpdateLength, FrameType.WindowUpdate, FrameFlags.None, streamId: 0); 224_outgoingBuffer.Commit(FrameHeader.Size); 403private async ValueTask<FrameHeader> ReadFrameAsync(bool initialFrame = false) 408if (_incomingBuffer.ActiveLength < FrameHeader.Size) 415_incomingBuffer.EnsureAvailableSpace(FrameHeader.Size); 431ThrowPrematureEOF(FrameHeader.Size); 435while (_incomingBuffer.ActiveLength < FrameHeader.Size); 439FrameHeader frameHeader = FrameHeader.ReadFrom(_incomingBuffer.ActiveSpan); 440if (frameHeader.PayloadLength > FrameHeader.MaxPayloadLength) 448_incomingBuffer.Discard(FrameHeader.Size); 451_incomingBuffer.Discard(FrameHeader.Size); 483FrameHeader frameHeader; 529if (_incomingBuffer.ActiveLength < FrameHeader.Size) 555while (_incomingBuffer.ActiveLength < FrameHeader.Size); 645private async ValueTask ProcessHeadersFrame(FrameHeader frameHeader) 730if (frameData.Length < FrameHeader.PriorityInfoLength) 736frameData = frameData.Slice(FrameHeader.PriorityInfoLength); 748private void ProcessAltSvcFrame(FrameHeader frameHeader) 778private void ProcessDataFrame(FrameHeader frameHeader) 807private void ProcessSettingsFrame(FrameHeader frameHeader, bool initialFrame = false) 963private void ProcessPriorityFrame(FrameHeader frameHeader) 967if (frameHeader.StreamId == 0 || frameHeader.PayloadLength != FrameHeader.PriorityInfoLength) 977private void ProcessPingFrame(FrameHeader frameHeader) 986if (frameHeader.PayloadLength != FrameHeader.PingLength) 994Debug.Assert(sizeof(long) == FrameHeader.PingLength); 995ReadOnlySpan<byte> pingContent = _incomingBuffer.ActiveSpan.Slice(0, FrameHeader.PingLength); 1011private void ProcessWindowUpdateFrame(FrameHeader frameHeader) 1015if (frameHeader.PayloadLength != FrameHeader.WindowUpdateLength) 1048private void ProcessRstStreamFrame(FrameHeader frameHeader) 1052if (frameHeader.PayloadLength != FrameHeader.RstStreamLength) 1079private void ProcessGoAwayFrame(FrameHeader frameHeader) 1114private (int lastStreamId, Http2ProtocolErrorCode errorCode) ReadGoAwayFrame(FrameHeader frameHeader) 1118if (frameHeader.PayloadLength < FrameHeader.GoAwayMinLength) 1288PerformWriteAsync(FrameHeader.Size, this, static (thisRef, writeBuffer) => 1292FrameHeader.WriteTo(writeBuffer.Span, 0, FrameType.Settings, FrameFlags.Ack, streamId: 0); 1300PerformWriteAsync(FrameHeader.Size + FrameHeader.PingLength, (thisRef: this, pingContent, isAck), static (state, writeBuffer) => 1304Debug.Assert(sizeof(long) == FrameHeader.PingLength); 1307FrameHeader.WriteTo(span, FrameHeader.PingLength, FrameType.Ping, state.isAck ? FrameFlags.Ack : FrameFlags.None, streamId: 0); 1308BinaryPrimitives.WriteInt64BigEndian(span.Slice(FrameHeader.Size), state.pingContent); 1314PerformWriteAsync(FrameHeader.Size + FrameHeader.RstStreamLength, (thisRef: this, streamId, errorCode), static (s, writeBuffer) => 1319FrameHeader.WriteTo(span, FrameHeader.RstStreamLength, FrameType.RstStream, FrameFlags.None, s.streamId); 1320BinaryPrimitives.WriteInt32BigEndian(span.Slice(FrameHeader.Size), (int)s.errorCode); 1648int frameCount = ((headerBytes.Length - 1) / FrameHeader.MaxPayloadLength) + 1; 1649int totalSize = headerBytes.Length + (frameCount * FrameHeader.Size); 1669(current, remaining) = SplitBuffer(s.headerBytes, FrameHeader.MaxPayloadLength); 1672FrameHeader.WriteTo(span, current.Length, FrameType.Headers, flags, s.http2Stream.StreamId); 1673span = span.Slice(FrameHeader.Size); 1681(current, remaining) = SplitBuffer(remaining, FrameHeader.MaxPayloadLength); 1684FrameHeader.WriteTo(span, current.Length, FrameType.Continuation, flags, s.http2Stream.StreamId); 1685span = span.Slice(FrameHeader.Size); 1718int frameSize = Math.Min(remaining.Length, FrameHeader.MaxPayloadLength); 1738await PerformWriteAsync(FrameHeader.Size + current.Length, (thisRef: this, streamId, current, flush), static (s, writeBuffer) => 1743FrameHeader.WriteTo(writeBuffer.Span, s.current.Length, FrameType.Data, FrameFlags.None, s.streamId); 1744s.current.CopyTo(writeBuffer.Slice(FrameHeader.Size)); 1759PerformWriteAsync(FrameHeader.Size, (thisRef: this, streamId), static (s, writeBuffer) => 1763FrameHeader.WriteTo(writeBuffer.Span, 0, FrameType.Data, FrameFlags.EndStream, s.streamId); 1772return PerformWriteAsync(FrameHeader.Size + FrameHeader.WindowUpdateLength, (thisRef: this, streamId, amount), static (s, writeBuffer) => 1777FrameHeader.WriteTo(span, FrameHeader.WindowUpdateLength, FrameType.WindowUpdate, FrameFlags.None, s.streamId); 1778BinaryPrimitives.WriteInt32BigEndian(span.Slice(FrameHeader.Size), s.amount); 1929public static FrameHeader ReadFrom(ReadOnlySpan<byte> buffer)