1941return 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); 406private async ValueTask<FrameHeader> ReadFrameAsync(bool initialFrame = false) 411if (_incomingBuffer.ActiveLength < FrameHeader.Size) 418_incomingBuffer.EnsureAvailableSpace(FrameHeader.Size); 434ThrowPrematureEOF(FrameHeader.Size); 438while (_incomingBuffer.ActiveLength < FrameHeader.Size); 442FrameHeader frameHeader = FrameHeader.ReadFrom(_incomingBuffer.ActiveSpan); 443if (frameHeader.PayloadLength > FrameHeader.MaxPayloadLength) 451_incomingBuffer.Discard(FrameHeader.Size); 454_incomingBuffer.Discard(FrameHeader.Size); 486FrameHeader frameHeader; 532if (_incomingBuffer.ActiveLength < FrameHeader.Size) 558while (_incomingBuffer.ActiveLength < FrameHeader.Size); 648private async ValueTask ProcessHeadersFrame(FrameHeader frameHeader) 733if (frameData.Length < FrameHeader.PriorityInfoLength) 739frameData = frameData.Slice(FrameHeader.PriorityInfoLength); 751private void ProcessAltSvcFrame(FrameHeader frameHeader) 781private void ProcessDataFrame(FrameHeader frameHeader) 810private void ProcessSettingsFrame(FrameHeader frameHeader, bool initialFrame = false) 966private void ProcessPriorityFrame(FrameHeader frameHeader) 970if (frameHeader.StreamId == 0 || frameHeader.PayloadLength != FrameHeader.PriorityInfoLength) 980private void ProcessPingFrame(FrameHeader frameHeader) 989if (frameHeader.PayloadLength != FrameHeader.PingLength) 997Debug.Assert(sizeof(long) == FrameHeader.PingLength); 998ReadOnlySpan<byte> pingContent = _incomingBuffer.ActiveSpan.Slice(0, FrameHeader.PingLength); 1014private void ProcessWindowUpdateFrame(FrameHeader frameHeader) 1018if (frameHeader.PayloadLength != FrameHeader.WindowUpdateLength) 1051private void ProcessRstStreamFrame(FrameHeader frameHeader) 1055if (frameHeader.PayloadLength != FrameHeader.RstStreamLength) 1082private void ProcessGoAwayFrame(FrameHeader frameHeader) 1117private (int lastStreamId, Http2ProtocolErrorCode errorCode) ReadGoAwayFrame(FrameHeader frameHeader) 1121if (frameHeader.PayloadLength < FrameHeader.GoAwayMinLength) 1291PerformWriteAsync(FrameHeader.Size, this, static (thisRef, writeBuffer) => 1295FrameHeader.WriteTo(writeBuffer.Span, 0, FrameType.Settings, FrameFlags.Ack, streamId: 0); 1303PerformWriteAsync(FrameHeader.Size + FrameHeader.PingLength, (thisRef: this, pingContent, isAck), static (state, writeBuffer) => 1307Debug.Assert(sizeof(long) == FrameHeader.PingLength); 1310FrameHeader.WriteTo(span, FrameHeader.PingLength, FrameType.Ping, state.isAck ? FrameFlags.Ack : FrameFlags.None, streamId: 0); 1311BinaryPrimitives.WriteInt64BigEndian(span.Slice(FrameHeader.Size), state.pingContent); 1317PerformWriteAsync(FrameHeader.Size + FrameHeader.RstStreamLength, (thisRef: this, streamId, errorCode), static (s, writeBuffer) => 1322FrameHeader.WriteTo(span, FrameHeader.RstStreamLength, FrameType.RstStream, FrameFlags.None, s.streamId); 1323BinaryPrimitives.WriteInt32BigEndian(span.Slice(FrameHeader.Size), (int)s.errorCode); 1651int frameCount = ((headerBytes.Length - 1) / FrameHeader.MaxPayloadLength) + 1; 1652int totalSize = headerBytes.Length + (frameCount * FrameHeader.Size); 1672(current, remaining) = SplitBuffer(s.headerBytes, FrameHeader.MaxPayloadLength); 1675FrameHeader.WriteTo(span, current.Length, FrameType.Headers, flags, s.http2Stream.StreamId); 1676span = span.Slice(FrameHeader.Size); 1684(current, remaining) = SplitBuffer(remaining, FrameHeader.MaxPayloadLength); 1687FrameHeader.WriteTo(span, current.Length, FrameType.Continuation, flags, s.http2Stream.StreamId); 1688span = span.Slice(FrameHeader.Size); 1721int frameSize = Math.Min(remaining.Length, FrameHeader.MaxPayloadLength); 1741await PerformWriteAsync(FrameHeader.Size + current.Length, (thisRef: this, streamId, current, flush), static (s, writeBuffer) => 1746FrameHeader.WriteTo(writeBuffer.Span, s.current.Length, FrameType.Data, FrameFlags.None, s.streamId); 1747s.current.CopyTo(writeBuffer.Slice(FrameHeader.Size)); 1762PerformWriteAsync(FrameHeader.Size, (thisRef: this, streamId), static (s, writeBuffer) => 1766FrameHeader.WriteTo(writeBuffer.Span, 0, FrameType.Data, FrameFlags.EndStream, s.streamId); 1775return PerformWriteAsync(FrameHeader.Size + FrameHeader.WindowUpdateLength, (thisRef: this, streamId, amount), static (s, writeBuffer) => 1780FrameHeader.WriteTo(span, FrameHeader.WindowUpdateLength, FrameType.WindowUpdate, FrameFlags.None, s.streamId); 1781BinaryPrimitives.WriteInt32BigEndian(span.Slice(FrameHeader.Size), s.amount); 1932public static FrameHeader ReadFrom(ReadOnlySpan<byte> buffer)