// Copyright 2014 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package icmp // A DstUnreach represents an ICMP destination unreachable message // body. type DstUnreach struct { Data []byte // data, known as original datagram field Extensions []Extension // extensions } // Len implements the Len method of MessageBody interface. func (p *DstUnreach) Len(proto int) int { if p == nil { return 0 } l, _ := multipartMessageBodyDataLen(proto, true, p.Data, p.Extensions) return 4 + l } // Marshal implements the Marshal method of MessageBody interface. func (p *DstUnreach) Marshal(proto int) ([]byte, error) { return marshalMultipartMessageBody(proto, true, p.Data, p.Extensions) } // parseDstUnreach parses b as an ICMP destination unreachable message // body. func parseDstUnreach(proto int, typ Type, b []byte) (MessageBody, error) { if len(b) < 4 { return nil, errMessageTooShort } p := &DstUnreach{} var err error p.Data, p.Extensions, err = parseMultipartMessageBody(proto, typ, b) if err != nil { return nil, err } return p, nil }