1925return new FrameHeader(payloadLength, type, flags, streamId);

86private const int InitialConnectionBufferSize = FrameHeader.Size; 197FrameHeader.Size + FrameHeader.SettingLength + 198FrameHeader.Size + FrameHeader.WindowUpdateLength); 205FrameHeader.WriteTo(_outgoingBuffer.AvailableSpan, 2 * FrameHeader.SettingLength, FrameType.Settings, FrameFlags.None, streamId: 0); 206_outgoingBuffer.Commit(FrameHeader.Size); 221FrameHeader.WriteTo(_outgoingBuffer.AvailableSpan, FrameHeader.WindowUpdateLength, FrameType.WindowUpdate, FrameFlags.None, streamId: 0); 222_outgoingBuffer.Commit(FrameHeader.Size); 390private async ValueTask<FrameHeader> ReadFrameAsync(bool initialFrame = false) 395if (_incomingBuffer.ActiveLength < FrameHeader.Size) 402_incomingBuffer.EnsureAvailableSpace(FrameHeader.Size); 418ThrowPrematureEOF(FrameHeader.Size); 422while (_incomingBuffer.ActiveLength < FrameHeader.Size); 426FrameHeader frameHeader = FrameHeader.ReadFrom(_incomingBuffer.ActiveSpan); 427if (frameHeader.PayloadLength > FrameHeader.MaxPayloadLength) 435_incomingBuffer.Discard(FrameHeader.Size); 438_incomingBuffer.Discard(FrameHeader.Size); 470FrameHeader frameHeader; 516if (_incomingBuffer.ActiveLength < FrameHeader.Size) 542while (_incomingBuffer.ActiveLength < FrameHeader.Size); 632private async ValueTask ProcessHeadersFrame(FrameHeader frameHeader) 717if (frameData.Length < FrameHeader.PriorityInfoLength) 723frameData = frameData.Slice(FrameHeader.PriorityInfoLength); 735private void ProcessAltSvcFrame(FrameHeader frameHeader) 765private void ProcessDataFrame(FrameHeader frameHeader) 794private void ProcessSettingsFrame(FrameHeader frameHeader, bool initialFrame = false) 950private void ProcessPriorityFrame(FrameHeader frameHeader) 954if (frameHeader.StreamId == 0 || frameHeader.PayloadLength != FrameHeader.PriorityInfoLength) 964private void ProcessPingFrame(FrameHeader frameHeader) 973if (frameHeader.PayloadLength != FrameHeader.PingLength) 981Debug.Assert(sizeof(long) == FrameHeader.PingLength); 982ReadOnlySpan<byte> pingContent = _incomingBuffer.ActiveSpan.Slice(0, FrameHeader.PingLength); 998private void ProcessWindowUpdateFrame(FrameHeader frameHeader) 1002if (frameHeader.PayloadLength != FrameHeader.WindowUpdateLength) 1035private void ProcessRstStreamFrame(FrameHeader frameHeader) 1039if (frameHeader.PayloadLength != FrameHeader.RstStreamLength) 1066private void ProcessGoAwayFrame(FrameHeader frameHeader) 1101private (int lastStreamId, Http2ProtocolErrorCode errorCode) ReadGoAwayFrame(FrameHeader frameHeader) 1105if (frameHeader.PayloadLength < FrameHeader.GoAwayMinLength) 1275PerformWriteAsync(FrameHeader.Size, this, static (thisRef, writeBuffer) => 1279FrameHeader.WriteTo(writeBuffer.Span, 0, FrameType.Settings, FrameFlags.Ack, streamId: 0); 1287PerformWriteAsync(FrameHeader.Size + FrameHeader.PingLength, (thisRef: this, pingContent, isAck), static (state, writeBuffer) => 1291Debug.Assert(sizeof(long) == FrameHeader.PingLength); 1294FrameHeader.WriteTo(span, FrameHeader.PingLength, FrameType.Ping, state.isAck ? FrameFlags.Ack : FrameFlags.None, streamId: 0); 1295BinaryPrimitives.WriteInt64BigEndian(span.Slice(FrameHeader.Size), state.pingContent); 1301PerformWriteAsync(FrameHeader.Size + FrameHeader.RstStreamLength, (thisRef: this, streamId, errorCode), static (s, writeBuffer) => 1306FrameHeader.WriteTo(span, FrameHeader.RstStreamLength, FrameType.RstStream, FrameFlags.None, s.streamId); 1307BinaryPrimitives.WriteInt32BigEndian(span.Slice(FrameHeader.Size), (int)s.errorCode); 1635int frameCount = ((headerBytes.Length - 1) / FrameHeader.MaxPayloadLength) + 1; 1636int totalSize = headerBytes.Length + (frameCount * FrameHeader.Size); 1656(current, remaining) = SplitBuffer(s.headerBytes, FrameHeader.MaxPayloadLength); 1659FrameHeader.WriteTo(span, current.Length, FrameType.Headers, flags, s.http2Stream.StreamId); 1660span = span.Slice(FrameHeader.Size); 1668(current, remaining) = SplitBuffer(remaining, FrameHeader.MaxPayloadLength); 1671FrameHeader.WriteTo(span, current.Length, FrameType.Continuation, flags, s.http2Stream.StreamId); 1672span = span.Slice(FrameHeader.Size); 1705int frameSize = Math.Min(remaining.Length, FrameHeader.MaxPayloadLength); 1725await PerformWriteAsync(FrameHeader.Size + current.Length, (thisRef: this, streamId, current, flush), static (s, writeBuffer) => 1730FrameHeader.WriteTo(writeBuffer.Span, s.current.Length, FrameType.Data, FrameFlags.None, s.streamId); 1731s.current.CopyTo(writeBuffer.Slice(FrameHeader.Size)); 1746PerformWriteAsync(FrameHeader.Size, (thisRef: this, streamId), static (s, writeBuffer) => 1750FrameHeader.WriteTo(writeBuffer.Span, 0, FrameType.Data, FrameFlags.EndStream, s.streamId); 1759return PerformWriteAsync(FrameHeader.Size + FrameHeader.WindowUpdateLength, (thisRef: this, streamId, amount), static (s, writeBuffer) => 1764FrameHeader.WriteTo(span, FrameHeader.WindowUpdateLength, FrameType.WindowUpdate, FrameFlags.None, s.streamId); 1765BinaryPrimitives.WriteInt32BigEndian(span.Slice(FrameHeader.Size), s.amount); 1916public static FrameHeader ReadFrom(ReadOnlySpan<byte> buffer)