1234567891011121314151617181920212223242526272829303132333435363738394041424344 |
- // +build go1.11
- // +build aix darwin dragonfly freebsd linux netbsd openbsd
-
- 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)
- }
|