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@ -104,6 +104,7 @@ func (e *userspaceEngine) trackOpenPostFilterOut(pp *packet.Parsed, t *tstun.Wra
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if pp.IPVersion == 0 ||
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pp.IPProto != ipproto.TCP ||
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pp.TCPFlags&packet.TCPAck != 0 ||
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pp.TCPFlags&packet.TCPSyn == 0 {
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return
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}
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@ -219,14 +220,32 @@ func (e *userspaceEngine) onOpenTimeout(flow flowtrack.Tuple) {
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// handshake completed, which is what I want.
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_ = ps.LastHandshake
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e.logf("open-conn-track: timeout opening %v to node %v; lastSeen=%v, lastRecv=%v",
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online := "?"
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if n.Online != nil {
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if *n.Online {
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online = "yes"
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} else {
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online = "no"
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}
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}
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e.logf("open-conn-track: timeout opening %v to node %v; lastSeen=%v, online=%v, lastRecv=%v",
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flow, n.Key.ShortString(),
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agoOrNever(lastSeen), agoOrNever(e.magicConn.LastRecvActivityOfDisco(n.DiscoKey)))
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durFmt(lastSeen),
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online,
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durFmt(e.magicConn.LastRecvActivityOfDisco(n.DiscoKey)))
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}
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func agoOrNever(t time.Time) string {
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func durFmt(t time.Time) string {
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if t.IsZero() {
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return "never"
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}
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return time.Since(t).Round(time.Second).String()
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d := time.Since(t).Round(time.Second)
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if d < 10*time.Minute {
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// node.LastSeen times are rounded very coarsely, and
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// we compare times from different clocks (server vs
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// local), so negative is common when close. Format as
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// "recent" if negative or actually recent.
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return "recent"
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}
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return d.String()
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}
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