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