10000 chore(vpn): send ping results over tunnel by ethanndickson · Pull Request #18200 · coder/coder · GitHub
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chore(vpn): send ping results over tunnel #18200

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Merged
merged 13 commits into from
Jun 6, 2025
Merged

chore(vpn): send ping results over tunnel #18200

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72db567
chore(vpn): send ping results over tunnel
ethanndickson Jun 3, 2025
91f3ba0
fixup
ethanndickson Jun 3, 2025
896548d
add pingctx
ethanndickson Jun 3, 2025
176a375
review
ethanndickson Jun 3, 2025
f30bd12
forgot to goroutine
ethanndickson Jun 4, 2025
a472f56
remove wg
ethanndickson Jun 4, 2025
91f8009
lock for conn read
ethanndickson Jun 4, 2025
90f619d
fixup
ethanndickson Jun 4, 2025
6b5ea62
actually fixed with extra tests
ethanndickson Jun 5, 2025
50d3ef5
const version string
ethanndickson Jun 5, 2025
1ac2328
lint
ethanndickson Jun 5, 2025
3f49238
potential nil deref
ethanndickson Jun 5, 2025
208fcc2
review
ethanndickson Jun 6, 2025
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lock for conn read
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@ethanndickson
ethanndickson committed Jun 4, 2025
commit 91f80096c0a3e29a53b5e5ae57f3ba46ffc6f12d
11 changes: 8 additions & 3 deletions vpn/tunnel.go
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Original file line number Diff line number Diff line change
Expand Up @@ -563,8 +563,8 @@ func (u *updater) stop() error {
return nil
}
err := u.conn.Close()
u.conn = nil
u.cancel()
u.conn = nil
return err
}

Expand Down Expand Up @@ -630,6 +630,13 @@ func (u *updater) recordLatency() {
u.logger.Warn(u.ctx, "failed to ping agent", slog.F("agent_id", agentID), slog.Error(err))
return
}

u.mu.Lock()
defer u.mu.Unlock()
if u.conn == nil {
u.logger.Debug(u.ctx, "ignoring ping result as connection is closed", slog.F("agent_id", agentID))
return
}
node := u.conn.Node()
derpMap := u.conn.DERPMap()
derpLatencies := tailnet.ExtractDERPLatency(node, derpMap)
Expand All @@ -640,8 +647,6 @@ func (u *updater) recordLatency() {
} else {
u.logger.Debug(u.ctx, "preferred DERP not found in DERP latency map", slog.F("preferred_derp", preferredDerp))
}
u.mu.Lock()
defer u.mu.Unlock()
if agent, ok := u.agents[agentID]; ok {
agent.lastPing = &lastPing{
pingDur: pingDur,
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