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// Copyright 2012 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 MessageBody represents an ICMP message body.
type MessageBody interface {
// Len returns the length of ICMP message body.
// Proto must be either the ICMPv4 or ICMPv6 protocol number.
Len(proto int) int
// Marshal returns the binary encoding of ICMP message body.
// Proto must be either the ICMPv4 or ICMPv6 protocol number.
Marshal(proto int) ([]byte, error)
}
// A DefaultMessageBody represents the default message body.
type DefaultMessageBody struct {
Data []byte // data
}
// Len implements the Len method of MessageBody interface.
func (p *DefaultMessageBody) Len(proto int) int {
if p == nil {
return 0
}
return len(p.Data)
}
// Marshal implements the Marshal method of MessageBody interface.
func (p *DefaultMessageBody) Marshal(proto int) ([]byte, error) {
return p.Data, nil
}
// parseDefaultMessageBody parses b as an ICMP message body.
func parseDefaultMessageBody(proto int, b []byte) (MessageBody, error) {
p := &DefaultMessageBody{Data: make([]byte, len(b))}
copy(p.Data, b)
return p, nil
}
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