Nadezhda Ivanova authored Feb 07, 2019 and Quanah Gibson-Mount committed Feb 28, 2019

This option instructs try_read1msg to not free the connection on read error
or on Notice of disconnections, but leave it to the caller. It is needed,
for example, by back-asyncmeta, who expects to have control on when
its target connections are freed. Must be used with caution.