Statistics

Both client and server has ability to show statistics about known connected peers. You retrieve them by downloading JSON from built-in background HTTP-server. You can enable it by specifying -stats host:port argument.

Actually it is not full-fledged HTTP-server: it just accepts connection, reads from it (does not parse anything) and writes dummy headers with JSON document.

$ govpn-server [...] -stats "[::1]:5678"
$ curl http://localhost:5678/ | jq .
[
  {
    "HeartbeatSent": 1,
    "HeartbeatRecv": 2,
    "FramesDup": 0,
    "FramesUnauth": 0,
    "Addr": {
      "Zone": "igb1",
      "Port": 12989,
      "IP": "fe80::221:ccff:feb9:ba7f"
    },
    "Id": "stargrave",
    "LastPing": "2015-04-30T22:05:49.426616166+03:00",
    "LastSent": "2015-04-30T22:05:49.426704138+03:00",
    "BytesIn": 1392774,
    "BytesOut": 17228877,
    "FramesIn": 12412,
    "FramesOut": 16588
  }
]