package server
func lowerSlice(buf []byte) []byte {
for i, r := range buf {
if 'A' <= r && r <= 'Z' {
r += 'a' - 'A'
}
buf[i] = r
return buf
func upperSlice(buf []byte) []byte {
if 'a' <= r && r <= 'z' {
r -= 'a' - 'A'