-
Notifications
You must be signed in to change notification settings - Fork 0
/
forward.go
48 lines (37 loc) · 945 Bytes
/
forward.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
37
38
39
40
41
42
43
44
45
46
47
48
package ptaggr
import (
"fmt"
"time"
"github.com/coredns/caddy"
"github.com/coredns/coredns/plugin/forward"
"github.com/coredns/coredns/plugin/pkg/parse"
"github.com/coredns/coredns/plugin/pkg/proxy"
"github.com/coredns/coredns/plugin/pkg/transport"
)
const defaultExpire = 10 * time.Second
func initForwards(c *caddy.Controller) ([]*forward.Forward, error) {
var f []*forward.Forward
to := c.RemainingArgs()
if len(to) == 0 {
return f, c.ArgErr()
}
toHosts, err := parse.HostPortOrFile(to...)
if err != nil {
return f, err
}
for c.NextBlock() {
return f, fmt.Errorf("additional parameters not allowed")
}
for _, host := range toHosts {
trans, h := parse.Transport(host)
if trans != transport.DNS {
return f, fmt.Errorf("only dns transport allowed")
}
p := proxy.NewProxy("ptaggr", h, trans)
p.SetExpire(defaultExpire)
fw := forward.New()
fw.SetProxy(p)
f = append(f, fw)
}
return f, nil
}