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wgengine: don't diagnose iOS NWPathMonitor connection probe timeouts

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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2021-03-16 13:58:56 -07:00 committed by Brad Fitzpatrick
parent 0f90586da8
commit e0f2796b43
1 changed files with 13 additions and 0 deletions
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13
wgengine/pendopen.go
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@ -6,12 +6,14 @@ package wgengine
import (
"os"
"runtime"
"strconv"
"time"
"tailscale.com/ipn/ipnstate"
"tailscale.com/net/flowtrack"
"tailscale.com/net/packet"
"tailscale.com/net/tsaddr"
"tailscale.com/wgengine/filter"
"tailscale.com/wgengine/tstun"
)
@ -106,6 +108,17 @@ func (e *userspaceEngine) trackOpenPostFilterOut(pp *packet.Parsed, t *tstun.TUN
}
flow := flowtrack.Tuple{Src: pp.Src, Dst: pp.Dst}
// iOS likes to probe Apple IPs on all interfaces to check for connectivity.
// Don't start timers tracking those. They won't succeed anyway. Avoids log spam
// like:
// open-conn-track: timeout opening (100.115.73.60:52501 => 17.125.252.5:443); no associated peer node
if runtime.GOOS == "ios" && flow.Dst.Port == 443 && !tsaddr.IsTailscaleIP(flow.Dst.IP) {
if _, ok := e.magicConn.PeerForIP(flow.Dst.IP); !ok {
return
}
}
timer := time.AfterFunc(tcpTimeoutBeforeDebug, func() {
e.onOpenTimeout(flow)
})