System.ServiceModel.Http2Protocol.Http2Protocol.ProcessControlFrame C# (CSharp) Method

        private void ProcessControlFrame(ControlFrame frame)
        {
            if (frame.Version != Version)
            {
                throw new ProtocolExeption(StatusCode.UnsupportedVersion);
            }

            if (frame.Type == FrameType.GoAway)
            {
                GoAwayFrame goAway = (GoAwayFrame)frame;
                CloseInternal(goAway.Status, goAway.LastSeenGoodStreamId, false);
            }
            else
            {
                Http2Stream stream = this.streamsStore.GetStreamById(frame.StreamId);

                // if this is rst frame - don't send error or it will go in rst loop
                if (stream == null && frame.Type != FrameType.RTS && frame.Type != FrameType.Settings && frame.Type != FrameType.SynStream)
                {
                    this.SendRST(frame.StreamId, StatusCode.InvalidStream);
                    return;
                }

                switch (frame.Type)
                {
                    case FrameType.SynStream:
                        //TODO validate syn_stream and send syn_reply or rst
                        this.OnSessionFrame(this, new ControlFrameEventArgs(frame));
                        break;
                    case FrameType.SynReply:
                        this.OnSessionFrame(this, new ControlFrameEventArgs(frame));
                        break;
                    case FrameType.Headers:
                        this.OnStreamFrame(this, new HeadersEventArgs(this.streamsStore.GetStreamById(frame.StreamId), frame.Headers));
                        break;
                    case FrameType.RTS:
                        this.OnStreamFrame(this, new RSTEventArgs(this.streamsStore.GetStreamById(frame.StreamId), frame.StatusCode));
                        break;
                    case FrameType.Ping:
                        this.OnSocketPing(this, new PingEventArgs(frame.StreamId));
                        break;
                    case FrameType.Settings:
                        OnSessionFrame(this, new SettingsEventArgs(frame));
                        break;
                    case FrameType.WindowUpdate:
                        Http2Stream http2Stream = this.streamsStore.GetStreamById(frame.StreamId);
                        http2Stream.UpdateWindowBalance(frame.DeltaWindowSize);
                        break;
                }
            }
        }