Broken pipe

[elpoutro]

Everything is functional excepted that i get this error after a while whiteout client connection:

"PDOStatement::execute(): send of 916 bytes failed with errno=32 Broken pipe"

Note that the service still returns a right ping status despite the broken pipe:

[2017-09-06 17:12:07] websocket.NOTICE: Successfully ping sql server (~39 ms) [] [] [2017-09-06 17:12:27] websocket.NOTICE: Successfully ping sql server (~43 ms) [] [] [2017-09-06 17:12:47] websocket.NOTICE: Successfully ping sql server (~78 ms) [] []

And note that any client connection looks to repel the issue.

Changing the "wait_timeout" (28800 seconds by default) to other value (31536000 is the max value) resolves the issue but I don't want to change this value in production.

It looks to be the same issue as #241