cmd/tailscale/cli: add ping subcommand

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

View File

@@ -31,7 +31,7 @@ func ActLikeCLI() bool {
return false
}
switch os.Args[1] {
case "up", "status", "netcheck", "version",
case "up", "status", "netcheck", "ping", "version",
"-V", "--version", "-h", "--help":
return true
}
@@ -59,6 +59,7 @@ change in the future.
upCmd,
netcheckCmd,
statusCmd,
pingCmd,
versionCmd,
},
FlagSet: rootfs,