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a51529dd15
In early versions of the series which proposed protocol servers, the interface had two methods answering pretty much the same question of whether the server is running or not: * listen_addresses(): empty list -> server not running * is_server_running() To reduce redundancy and to avoid possible inconsistencies between the two methods, `is_server_running()` was scrapped, but re-added by a follow-up patch because `listen_addresses()` proved to be unreliable as a source for whether the server is running or not. This patch restores the previous state of having only `listen_addresses()` with two additional changes: * rephrase the comment on `listen_addresses()` to make it clear that implementations must return empty list when the server is not running; * those implementations that have a reliable source of whether the server is running or not, use it to force-return an empty list when the server is not running Tests: dtest(nodetool_additional_test.py) Signed-off-by: Botond Dénes <bdenes@scylladb.com> Message-Id: <20211117062539.16932-1-bdenes@scylladb.com>