It will be great if you test attached filter. It is not fixed version, but with very short timeout (1500 milliseconds). I set the timeout value based on your and @Sebastiii logs, so it should be sufficient for opening and maintaining connection. You should experience dropouts or stuttering when your server sends text "i'm not dead yet", but not such long freeze. In any case, it will be great if you post logs after test.Nice! Sounds like you figured out a bunch of stuff. What can I do to help with next steps?