Interface DecodingLayer

parser.go:29–46

DecodingLayer is an interface for packet layers that can decode themselves. The important part of DecodingLayer is that they decode themselves in-place. Calling DecodeFromBytes on a DecodingLayer totally resets the entire layer to the new state defined by the data passed in. A returned error leave

// Because the DecodingLayer is resetting its own fields, a call to
// DecodeFromBytes should normally not require any memory allocation.
type DecodingLayer interface {
	// DecodeFromBytes resets the internal state of this layer to the state
	// defined by the passed-in bytes.  Slices in the DecodingLayer may
	// reference the passed-in data, so care should be taken to copy it
	// first should later modification of data be required before the
	// DecodingLayer is discarded.
	DecodeFromBytes(data []byte, df DecodeFeedback) error
	// CanDecode returns the set of LayerTypes this DecodingLayer can
	// decode.  For Layers that are also DecodingLayers, this will most
	// often be that Layer's LayerType().
	CanDecode() LayerClass
	// NextLayerType returns the LayerType which should be used to decode
	// the LayerPayload.
	NextLayerType() LayerType
	// LayerPayload is the set of bytes remaining to decode after a call to
	// DecodeFromBytes.
	LayerPayload() []byte
}

// DecodingLayerFunc decodes given packet and stores decoded LayerType
// values into specified slice. Returns either first encountered