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package dhcpv6
// This module defines the OptElapsedTime structure.
// https://www.ietf.org/rfc/rfc3315.txt
import (
"encoding/binary"
"fmt"
)
type OptElapsedTime struct {
ElapsedTime uint16
}
func (op *OptElapsedTime) Code() OptionCode {
return OptionElapsedTime
}
func (op *OptElapsedTime) ToBytes() []byte {
buf := make([]byte, 6)
binary.BigEndian.PutUint16(buf[0:2], uint16(OptionElapsedTime))
binary.BigEndian.PutUint16(buf[2:4], 2)
binary.BigEndian.PutUint16(buf[4:6], uint16(op.ElapsedTime))
return buf
}
func (op *OptElapsedTime) Length() int {
return 2
}
func (op *OptElapsedTime) String() string {
return fmt.Sprintf("OptElapsedTime{elapsedtime=%v}", op.ElapsedTime)
}
// build an OptElapsedTime structure from a sequence of bytes.
// The input data does not include option code and length bytes.
func ParseOptElapsedTime(data []byte) (*OptElapsedTime, error) {
opt := OptElapsedTime{}
if len(data) != 2 {
return nil, fmt.Errorf("Invalid elapsed time data length. Expected 2 bytes, got %v", len(data))
}
opt.ElapsedTime = binary.BigEndian.Uint16(data)
return &opt, nil
}
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