Getting [si_destination_compare] send failed: Invalid argument upon stats send

[eob]

Hi folks!

I'm trying to configure metrics logging within a Vapor app. On my development box, I have Graphite running and collecting stats on port 2003.

The following command succeeds:

PORT=2003 SERVER=localhost echo "local.random.diceroll 4 `date +%s`" | nc ${SERVER} ${PORT}

But when I try to begin logging metrics from within the Vapor app, like so:

let statsdClient = try StatsdClient(host: "localhost", port: 2003)
MetricsSystem.bootstrap(statsdClient!)
let counter = Counter(label: "com.companyname.engine.startup")
counter.increment()

No stats are logged and I get the following log output:

[6479:7983275] [si_destination_compare] send failed: Invalid argument
[6479:7983275] [si_destination_compare] send failed: Undefined error: 0

Any clue as to what is going on? I assume it is some sort of connectivity error inside the networking layer. Thanks for any help you can provide!

[Lukasa]

Those logs should not be relevant, I believe they're logged by the OS itself.

Are you comfortable with tcpdump or Wireshark? It would be useful to try to sniff the traffic to see if any data is being sent to graphite.

[eob]

Lukasa,

Got it -- the data does indeed appear to be getting logged if I use the proper default UDP port (rather than the Graphite aggregator). I'll just ignore those error messages then.

Thank you!