woodpecker/vendor/github.com/lucas-clemente/quic-go/internal/utils/host.go
2017-07-24 19:15:25 -04:00

27 lines
530 B
Go

package utils
import (
"net/url"
"strings"
)
// HostnameFromAddr determines the hostname in an address string
func HostnameFromAddr(addr string) (string, error) {
p, err := url.Parse(addr)
if err != nil {
return "", err
}
h := p.Host
// copied from https://golang.org/src/net/http/transport.go
if hasPort(h) {
h = h[:strings.LastIndex(h, ":")]
}
return h, nil
}
// copied from https://golang.org/src/net/http/http.go
func hasPort(s string) bool {
return strings.LastIndex(s, ":") > strings.LastIndex(s, "]")
}