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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2020 WireGuard LLC. All Rights Reserved.
*/
package device
import "errors"
func (device *Device) PeekLookAtSocketFd4() (fd int, err error) {
nb, ok := device.net.bind.(*nativeBind)
if !ok {
return 0, errors.New("no socket exists")
}
sysconn, err := nb.ipv4.SyscallConn()
if err != nil {
return
}
err = sysconn.Control(func(f uintptr) {
fd = int(f)
})
if err != nil {
return
}
return
}
func (device *Device) PeekLookAtSocketFd6() (fd int, err error) {
nb, ok := device.net.bind.(*nativeBind)
if !ok {
return 0, errors.New("no socket exists")
}
sysconn, err := nb.ipv6.SyscallConn()
if err != nil {
return
}
err = sysconn.Control(func(f uintptr) {
fd = int(f)
})
if err != nil {
return
}
return
}
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