HTTP 499 recorded in Cloudflare but not in Nginx Logs
We're randomly experiencing legit requests being served HTTP 499 by Cloudflare. They were not logged by Nginx, meaning the requests never reached the origin. Not due to caching. What can I do to find out the root cause?
3 Replies
Could you first check the response headers to see where the 499 is coming from?
@Laudian how do I check the response headers from Cloudflare?
@Leo I only see the 499s from Cloudflare's Analytics & Logs > HTTP Traffic.
seeing 499s in the analytics is normal and expected, client connections will break abruptly for a variety of legitimate reasons. unless your users are reporting seeing them in their browser, there's nothing to worry about