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71029cea2d
This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>
28 lines
649 B
Go
28 lines
649 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package dns
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import (
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"fmt"
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"os/exec"
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)
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func flushCaches() error {
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out, err := exec.Command("ipconfig", "/flushdns").CombinedOutput()
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if err != nil {
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return fmt.Errorf("%v (output: %s)", err, out)
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}
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return nil
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}
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// Flush clears the local resolver cache.
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//
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// Only Windows has a public dns.Flush, needed in router_windows.go. Other
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// platforms like Linux need a different flush implementation depending on
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// the DNS manager. There is a FlushCaches method on the manager which
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// can be used on all platforms.
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func Flush() error {
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return flushCaches()
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}
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