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8432999835
Straight move+fixup, no other changes. In prep for merging with wgengine/router/dns. Signed-off-by: David Anderson <danderson@tailscale.com>
30 lines
674 B
Go
30 lines
674 B
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package dns
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import (
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"net"
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"os"
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"golang.org/x/sys/windows"
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)
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func networkIsDown(err error) bool {
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if oe, ok := err.(*net.OpError); ok && oe.Op == "write" {
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if se, ok := oe.Err.(*os.SyscallError); ok {
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if se.Syscall == "wsasendto" && se.Err == windows.WSAENETUNREACH {
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return true
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}
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}
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}
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return false
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}
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func networkIsUnreachable(err error) bool {
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// TODO(bradfitz,josharian): something here? what is the
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// difference between down and unreachable? Add comments.
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return false
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}
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