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2c07f5dfcd
Remove the platform specificity, it is unnecessary complexity. Deduplicate repeated code as a result of reduced complexity. Split out error identification code. Update call-sites and tests. Updates #14551 Updates tailscale/corp#25648 Signed-off-by: James Tucker <james@tailscale.com>
32 lines
1.0 KiB
Go
32 lines
1.0 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build !plan9
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package magicsock
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import (
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"errors"
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"syscall"
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)
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// shouldRebind returns if the error is one that is known to be healed by a
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// rebind, and if so also returns a resason string for the rebind.
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func shouldRebind(err error) (ok bool, reason string) {
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switch {
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// EPIPE/ENOTCONN are common errors when a send fails due to a closed
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// socket. There is some platform and version inconsistency in which
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// error is returned, but the meaning is the same.
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case errors.Is(err, syscall.EPIPE), errors.Is(err, syscall.ENOTCONN):
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return true, "broken-pipe"
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// EPERM is typically caused by EDR software, and has been observed to be
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// transient, it seems that some versions of some EDR lose track of sockets
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// at times, and return EPERM, but reconnects will establish appropriate
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// rights associated with a new socket.
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case errors.Is(err, syscall.EPERM):
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return true, "operation-not-permitted"
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}
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return false, ""
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}
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