I'm using EKS (Kubernetes) in AWS and I have problems with posting a payload at around 400 Kilobytes to any web server that runs in a container in that Kubernetes. I hit some kind of limit but it's not a limit in size, it seems at around 400 Kilobytes many times works but sometimes I get (testing with Python requests)
requests.exceptions.ChunkedEncodingError: ("Connection broken: ConnectionResetError(104, 'Connection reset by peer')", ConnectionResetError(104, 'Connection reset by peer'))
I test this with different containers (python web server on Alpine, Tomcat server on CentOS, nginx, etc).
The more I increase the size over 400 Kilobytes, the more consistent I get: Connection reset by peer.