The article explains the Cloudflare error 499 “client closed request”. Bobcares, as a part of our Server Management Services, offers solutions to every query that comes our way.

Cloudflare error 499 “client closed request”

When the client closes the connection while the server is still processing the request, the server is unable to provide a status code back, and this is indicated by a response code particular to Nginx. Since NGINX was used to build Cloudflare, we also have a 499 HTTP code in ELS and statistics for connections that disconnect before the request processing is complete.

As clients close connections, it is usual behavior to see these in the logs on an irregular basis.

Troubleshooting

We can fix the error once we know the reason behind the error. Let’s look into some of the prominent reasons and corresponding solutions.

1. If the application freeze, this error may occur. First, we’ve to instruct Nginx to wait more time. By changing the “fastcgi_read_timeout”, the Nginx’s timeouts will be increased. We can also increase the server’s processing power if waiting longer does not fix the issue.

A “hang” or “code freeze” in the app or content manager may be the cause of the 499 error if it appears on a particular page or request. We’ve to ensure the WordPress plugins are compatible. Also, verify that tables and indexes are in good condition before running any database queries.

2. If the 499 error occurs when the website is behind a proxy, we must increase the app server’s processing power. We can decrease the time Nginx users have to wait before using the service by raising “processing power.”

We can also increase the timeouts of your proxies (load balancer, CDN, firewall, etc.) if you can’t boost the power of your application server.

3. As the server closes the connection, we may see this error. We can increase the server’s processing power. We can shorten Nginx’s wait time by raising “processing power.”

If we are unable to upgrade the server’s power, use the “fastcgi_read_timeout” option in Nginx to extend timeouts.

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Conclusion

To conclude, we came to know more about error 499 on Cloudflare, “client closed request” and the methods to fix the error in different scenarios.