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bd2a2d53d3
I omitted a lot of the min/max modernizers because they didn't result in more clear code. Some of it's older "for x := range 123". Also: errors.AsType, any, fmt.Appendf, etc. Updates #18682 Change-Id: I83a451577f33877f962766a5b65ce86f7696471c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
31 lines
551 B
Go
31 lines
551 B
Go
// Copyright (c) Tailscale Inc & contributors
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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 := range 1000 {
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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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