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wgengine/magicsock: restore a bit of logging on node becoming active

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Fixes #2695

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2021-08-23 10:59:07 -07:00 committed by Brad Fitzpatrick
parent 51976ab3a2
commit 37053801bb
1 changed files with 41 additions and 6 deletions
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47
wgengine/magicsock/magicsock.go
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@ -853,11 +853,17 @@ func (c *Conn) populateCLIPingResponseLocked(res *ipnstate.PingResult, latency t
}
regionID := int(ep.Port())
res.DERPRegionID = regionID
if c.derpMap != nil {
if dr, ok := c.derpMap.Regions[regionID]; ok {
res.DERPRegionCode = dr.RegionCode
}
res.DERPRegionCode = c.derpRegionCodeLocked(regionID)
}
func (c *Conn) derpRegionCodeLocked(regionID int) string {
if c.derpMap == nil {
return ""
}
if dr, ok := c.derpMap.Regions[regionID]; ok {
return dr.RegionCode
}
return ""
}
// DiscoPublicKey returns the discovery public key.
@ -2760,13 +2766,14 @@ func (c *Conn) ParseEndpoint(endpointStr string) (conn.Endpoint, error) {
}
pk := key.Public(endpoints.PublicKey)
discoKey := endpoints.DiscoKey
c.logf("magicsock: ParseEndpoint: key=%s: disco=%s ipps=%s", pk.ShortString(), discoKey.ShortString(), derpStr(endpoints.IPPorts.String()))
c.mu.Lock()
defer c.mu.Unlock()
if discoKey.IsZero() {
c.logf("magicsock: ParseEndpoint: key=%s: disco=%s legacy=%s", pk.ShortString(), discoKey.ShortString(), derpStr(endpoints.IPPorts.String()))
return c.createLegacyEndpointLocked(pk, endpoints.IPPorts, endpointStr)
}
de := &discoEndpoint{
c: c,
publicKey: tailcfg.NodeKey(pk), // peer public key (for WireGuard + DERP)
@ -2777,7 +2784,35 @@ func (c *Conn) ParseEndpoint(endpointStr string) (conn.Endpoint, error) {
endpointState: map[netaddr.IPPort]*endpointState{},
}
de.initFakeUDPAddr()
de.updateFromNode(c.nodeOfDisco[de.discoKey])
n := c.nodeOfDisco[de.discoKey]
de.updateFromNode(n)
c.logf("magicsock: ParseEndpoint: key=%s: disco=%s; %v", pk.ShortString(), discoKey.ShortString(), logger.ArgWriter(func(w *bufio.Writer) {
if n == nil {
w.WriteString("nil node")
return
}
const derpPrefix = "127.3.3.40:"
if strings.HasPrefix(n.DERP, derpPrefix) {
ipp, _ := netaddr.ParseIPPort(n.DERP)
regionID := int(ipp.Port())
code := c.derpRegionCodeLocked(regionID)
if code != "" {
code = "(" + code + ")"
}
fmt.Fprintf(w, "derp=%v%s ", regionID, code)
}
for _, a := range n.AllowedIPs {
if a.IsSingleIP() {
fmt.Fprintf(w, "aip=%v ", a.IP())
} else {
fmt.Fprintf(w, "aip=%v ", a)
}
}
for _, ep := range n.Endpoints {
fmt.Fprintf(w, "ep=%v ", ep)
}
}))
c.endpointOfDisco[de.discoKey] = de
return de, nil
}