libpq: Complain about missing BackendKeyData later with PGgetCancel()
PostgreSQL always sends the BackendKeyData message at connection
startup, but there are some third party backend implementations out
there that don't support cancellation, and don't send the message
[1]. While the protocol docs
libpq: Complain about missing BackendKeyData later with PGgetCancel()
PostgreSQL always sends the BackendKeyData message at connection
startup, but there are some third party backend implementations out
there that don't support cancellation, and don't send the message
[1]. While the protocol docs
