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cmd/tailscale/cli: add ping subcommand

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For example:

$ tailscale ping -h
USAGE
  ping <hostname-or-IP>

FLAGS
  -c 10                   max number of pings to send
  -stop-once-direct true  stop once a direct path is established
  -verbose false          verbose output

$ tailscale ping mon.ts.tailscale.com
pong from monitoring (100.88.178.64) via DERP(sfo) in 65ms
pong from monitoring (100.88.178.64) via DERP(sfo) in 252ms
pong from monitoring (100.88.178.64) via [2604:a880:2:d1::36:d001]:41641 in 33ms

Fixes #661

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2020-08-09 14:49:42 -07:00
committed by Brad Fitzpatrick
parent d65e2632ab
commit 84dc891843
11 changed files with 379 additions and 40 deletions
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11
ipn/local.go
View File

@@ -745,6 +745,17 @@ func (b *LocalBackend) FakeExpireAfter(x time.Duration) {
b.send(Notify{NetMap: b.netMap})
}
func (b *LocalBackend) Ping(ipStr string) {
ip, err := netaddr.ParseIP(ipStr)
if err != nil {
b.logf("ignoring Ping request to invalid IP %q", ipStr)
return
}
b.e.Ping(ip, func(pr *ipnstate.PingResult) {
b.send(Notify{PingResult: pr})
})
}
func (b *LocalBackend) parseWgStatus(s *wgengine.Status) (ret EngineStatus) {
var (
peerStats []string