The curious case of slow downloads

The article discusses an issue with certain very slow downloads being abruptly terminated and the steps taken to investigate and resolve it. It was discovered that only mobile users experienced the problem when downloading a binary file of around 30MB. After reproducing the problem, it was found that NGINX's reset_timedout_connection setting and send_timeout configuration option were causing the issue. The solution involved adjusting these settings or patching NGINX to react differently on timeout. The author emphasizes the complexity of Linux networking stack and the importance of understanding all corner cases when debugging issues related to timeouts in the "write" path of code.