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net/netcheck: in verbose mode, probe all regions

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So 'tailscale netcheck --verbose' shows all regions' latencies.
This commit is contained in:
Brad Fitzpatrick 2020-08-19 20:47:17 -07:00
parent 461db356b9
commit 1e562886f5
1 changed files with 16 additions and 6 deletions
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22
net/netcheck/netcheck.go
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@ -171,6 +171,15 @@ type STUNConn interface {
ReadFrom([]byte) (int, net.Addr, error)
}
func (c *Client) enoughRegions() int {
if c.Verbose {
// Abuse verbose a bit here so netcheck can show all region latencies
// in verbose mode.
return 100
}
return 3
}
func (c *Client) logf(format string, a ...interface{}) {
if c.Logf != nil {
c.Logf(format, a...)
@ -615,12 +624,13 @@ func (rs *reportState) addNodeLatency(node *tailcfg.DERPNode, ipp netaddr.IPPort
ret.UDP = true
updateLatency(ret.RegionLatency, node.RegionID, d)
// Once we've heard from 3 regions, start a timer to give up
// on the other ones. The timer's duration is a function of
// whether this is our initial full probe or an incremental
// one. For incremental ones, wait for the duration of the
// slowest region. For initial ones, double that.
if len(ret.RegionLatency) == 3 {
// Once we've heard from enough regions (3), start a timer to
// give up on the other ones. The timer's duration is a
// function of whether this is our initial full probe or an
// incremental one. For incremental ones, wait for the
// duration of the slowest region. For initial ones, double
// that.
if len(ret.RegionLatency) == rs.c.enoughRegions() {
timeout := maxDurationValue(ret.RegionLatency)
if !rs.incremental {
timeout *= 2