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883d4fd2cd
Fixes #19633 Fixes #13760 Change-Id: I0fa9423523a3a0fb1dfcde57de0f26e51723ff97 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
36 lines
918 B
Go
36 lines
918 B
Go
// Copyright (c) Tailscale Inc & contributors
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build darwin || ios
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package netstack
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import (
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"context"
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"net"
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"net/netip"
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"time"
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"tailscale.com/net/ping"
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)
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// sendOutboundUserPing sends a non-privileged ICMP (or ICMPv6) ping to dstIP with the given timeout.
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func (ns *Impl) sendOutboundUserPing(dstIP netip.Addr, timeout time.Duration) error {
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ctx, cancel := context.WithTimeout(context.Background(), timeout)
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defer cancel()
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p := ping.New(ctx, ns.logf, nil)
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p.Unprivileged = true
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defer p.Close()
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dst := &net.IPAddr{IP: dstIP.AsSlice(), Zone: dstIP.Zone()}
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ns.logf("sendOutboundUserPing: forwarding ping to %s", dstIP)
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d, err := p.Send(ctx, dst, []byte("tailscale-userping"))
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if err != nil {
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ns.logf("sendOutboundUserPing: ping to %s failed: %v", dstIP, err)
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return err
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}
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ns.logf("sendOutboundUserPing: pong from %s in %v", dstIP, d)
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return nil
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}
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