}
		return nil
	}

	switch f := f.(type) {
	case *http2SettingsFrame:
		return sc.processSettings(f)
	case *http2MetaHeadersFrame:
		return sc.processHeaders(f)
	case *http2WindowUpdateFrame:
		return sc.processWindowUpdate(f)
	case *http2PingFrame:
		return sc.processPing(f)
	case *http2DataFrame:
		return sc.processData(f)
	case *http2RSTStreamFrame: