We're seeing errors coming from our Termbox Service that look like this. We’re trying to make sure that we have some understanding of the different types of timeout so that we can minimize them where possible. We're also seeing this this flurry of related errors that we think is coming from some envoy thing.
We didn't find a corresponding error from an App server that we were expecting to see (e.g. an error from Special:EntityData). Thus, we think our connection is perhaps having problems with envoy.
So we wonder if those errors might actually come from the TLS envoy service that we don't really understand. How would we track down where those errors are coming from? Should we be taking any action about these?