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PackBuffer: slight cleanup in docs

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Miek Gieben 2014-01-12 10:21:23 +00:00
parent 7f8964662e
commit 00a08d77fc
1 changed files with 4 additions and 3 deletions
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7
msg.go
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@ -1293,7 +1293,8 @@ func (dns *Msg) Pack() (msg []byte, err error) {
return dns.PackBuffer(nil) return dns.PackBuffer(nil)
} }
// PackWithBuffer packs a Msg, reusing a given buffer if possible to reduce memory allocations // PackBuffer packs a Msg, using the given buffer buf. If buf is too small
// a new buffer is allocated.
func (dns *Msg) PackBuffer(buf []byte) (msg []byte, err error) { func (dns *Msg) PackBuffer(buf []byte) (msg []byte, err error) {
var dh Header var dh Header
var compression map[string]int var compression map[string]int
@ -1341,8 +1342,8 @@ func (dns *Msg) PackBuffer(buf []byte) (msg []byte, err error) {
dh.Arcount = uint16(len(extra)) dh.Arcount = uint16(len(extra))
msg = buf msg = buf
if packLen := dns.packLen(); len(msg) <= packLen { if packLen := dns.packLen()+1; len(msg) < packLen {
msg = make([]byte, packLen+1) msg = make([]byte, packLen)
} }
// Pack it in: header and then the pieces. // Pack it in: header and then the pieces.