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Document dhcp.Options.Uint16.

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This commit is contained in:
David Anderson 2016-03-23 23:46:32 -07:00
parent 21d22e747d
commit 60581f4259
1 changed files with 9 additions and 8 deletions
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17
dhcp/options.go
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@ -138,18 +138,19 @@ func (o Options) marshalLimited(w io.Writer, nBytes int, skip52 bool) (Options,
// Byte returns the value of single-byte option n, if the option value
// is indeed a single byte.
func (o Options) Byte(n int) (byte, bool) {
v := o[n]
if v == nil || len(v) != 1 {
func (o Options) Byte(n int) (v byte, ok bool) {
bs := o[n]
if bs == nil || len(bs) != 1 {
return 0, false
}
return v[0], true
return bs[0], true
}
func (o Options) Uint16(n int) (uint16, bool) {
v := o[n]
if v == nil || len(v) != 2 {
// Uint16 returns the value of option n interpreted as a uint16.
func (o Options) Uint16(n int) (v uint16, ok bool) {
bs := o[n]
if bs == nil || len(bs) != 2 {
return 0, false
}
return binary.BigEndian.Uint16(v[:2]), true
return binary.BigEndian.Uint16(bs[:2]), true
}