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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>
30 lines
594 B
Go
30 lines
594 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package prober
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import (
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"context"
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"fmt"
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"net"
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)
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// TCP returns a Probe that healthchecks a TCP endpoint.
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//
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// The ProbeFunc reports whether it can successfully connect to addr.
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func TCP(addr string) ProbeFunc {
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return func(ctx context.Context) error {
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return probeTCP(ctx, addr)
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}
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}
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func probeTCP(ctx context.Context, addr string) error {
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var d net.Dialer
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conn, err := d.DialContext(ctx, "tcp", addr)
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if err != nil {
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return fmt.Errorf("dialing %q: %v", addr, err)
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}
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conn.Close()
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return nil
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}
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