31 lines
577 B
Go
31 lines
577 B
Go
|
// Copyright (c) Tailscale Inc & AUTHORS
|
||
|
|
// SPDX-License-Identifier: BSD-3-Clause
|
||
|
|
|
||
|
|
package ipnlocal
|
||
|
|
|
||
|
|
import (
|
||
|
|
"log"
|
||
|
|
|
||
|
|
"golang.org/x/sys/unix"
|
||
|
|
)
|
||
|
|
|
||
|
|
func init() {
|
||
|
|
breakTCPConns = breakTCPConnsDarwin
|
||
|
|
}
|
||
|
|
|
||
|
|
func breakTCPConnsDarwin() error {
|
||
|
|
var matched int
|
||
|
|
for fd := 0; fd < 1000; fd++ {
|
||
|
|
_, err := unix.GetsockoptTCPConnectionInfo(fd, unix.IPPROTO_TCP, unix.TCP_CONNECTION_INFO)
|
||
|
|
if err == nil {
|
||
|
|
matched++
|
||
|
|
err = unix.Close(fd)
|
||
|
|
log.Printf("debug: closed TCP fd %v: %v", fd, err)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if matched == 0 {
|
||
|
|
log.Printf("debug: no TCP connections found")
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|