TCP listen stops listening

[CoastalMaineBird]

Given that you say that when this happens, it happens hard, and the only way to recover is to restart the app, that sure sounds a whole lot like some resource is being used up. When it expires that resource, it cannot answer connection requests anymore.

My situation was the same way. Even though the problem was with TCP connections, quitting the app apparently freed those up, so you could run again.

I would look long and hard at a memory leak (some queue not being emptied??) or the connection-not-being-closed issue.

[Dennis_Vriezekolk]

I checked cpu usage and memory usage, and even improved it, but it seemed to be quite normal. Maximum handles/connections is a different story and a lot harder to check.