Priority: Critical | it's supported extension and the end-user impact seems high

When a user gets a connection from`pgPool` some milliseconds behind IDLE expiration time, then "sometimes" when you are going to use the connection, you get the following error from the server:

 Fail to read any response from the server, the underlying connection might get lost unexpectedly.

So, looks that the connection it's available when you request it, but then disappears when you use it. 

 GH ref