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
|
// +build go1.11,!windows
package dns
import (
"context"
"net"
"syscall"
"golang.org/x/sys/unix"
)
const supportsReusePort = true
func reuseportControl(network, address string, c syscall.RawConn) error {
var opErr error
err := c.Control(func(fd uintptr) {
opErr = unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)
})
if err != nil {
return err
}
return opErr
}
func listenTCP(network, addr string, reuseport bool) (net.Listener, error) {
var lc net.ListenConfig
if reuseport {
lc.Control = reuseportControl
}
return lc.Listen(context.Background(), network, addr)
}
func listenUDP(network, addr string, reuseport bool) (net.PacketConn, error) {
var lc net.ListenConfig
if reuseport {
lc.Control = reuseportControl
}
return lc.ListenPacket(context.Background(), network, addr)
}
|
