forked from coredns/coredns
-
Notifications
You must be signed in to change notification settings - Fork 0
/
host.go
36 lines (31 loc) · 883 Bytes
/
host.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
package middleware
import (
"net"
"strings"
"github.com/miekg/dns"
)
// Host represents a host from the Corefile, may contain port.
type (
Host string
Addr string
)
// Normalize will return the host portion of host, stripping
// of any port. The host will also be fully qualified and lowercased.
func (h Host) Normalize() string {
// separate host and port
host, _, err := net.SplitHostPort(string(h))
if err != nil {
host, _, _ = net.SplitHostPort(string(h) + ":")
}
return strings.ToLower(dns.Fqdn(host))
}
// Normalize will return a normalized address, if not port is specified
// port 53 is added, otherwise the port will be left as is.
func (a Addr) Normalize() string {
// separate host and port
addr, port, err := net.SplitHostPort(string(a))
if err != nil {
addr, port, _ = net.SplitHostPort(string(a) + ":53")
}
return net.JoinHostPort(addr, port)
}