One of the Puka users found that it is possible to
crash Puka. It happens as RabbitMQ seems to
keep on sending frames after connection_close_ok.
Puka has trouble behaving in such a case.
Is it a valid AMQP behaviour? Can anything be delivered
after connection_close_ok had been sent?
To reproduce run two instances of this code on a
Tested with RabbitMQ 2.7.1 and probably 2.8.6.