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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
//go:build !js && !wasm && !plan9
package magicsock
import (
"errors"
"syscall"
)
// errHOSTUNREACH wraps unix.EHOSTUNREACH in an interface type to pass to
// errors.Is while avoiding an allocation per call.
var errHOSTUNREACH error = syscall.EHOSTUNREACH
// isBadEndpointErr checks if err is one which is known to report that an
// endpoint can no longer be sent to. It is not exhaustive, and for unknown
// errors always reports false.
func isBadEndpointErr(err error) bool {
return errors.Is(err, errHOSTUNREACH)
}
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