Report probing errors to teleport

[oxtoacart]

For getlantern/engineering#292

This will give us insight into whether real clients are encountering this, and what are the patterns (if any).

[oxtoacart]

Okay, I deployed a preview of this for route 22488719-1f0c-4c2e-83a2-dead89b90fcd and the below query shows us getting the data I wanted. Also, the proxy in question has stayed up without crashing, so I'm going to go ahead and deploy.

SELECT
client_version,
client_platform,
probing_error,
APPROX_COUNT_DISTINCT(device_id) AS unique_devices
FROM `lantern-cloud.teleport.base_table`
WHERE
  TIMESTAMP_TRUNC(ts, DAY) >= TIMESTAMP("2023-10-16")
  AND name = 'proxied_bytes'
GROUP BY client_version, client_platform, probing_error
ORDER BY unique_devices DESC
LIMIT 1000

[orca-glo]

Thanks, @oxtoacart 🙏 Random bonus side effect of reading this was the prompt to refresh on anonymous fields in structs. I'm going to miss learning from you 😞