dahomey-technologies/rustis 0.27.0 on GitHub

MonitoredCommandInfo::server_addr is replaced by source. The field held
the address of the client, not of the server, and could only be a
SocketAddr. It is now a MonitoredCommandSource: Client(SocketAddr) for a
TCP client, Lua for a command run by a script or a function, Unix(String)
for a client on a Unix socket, and Unknown(String) for any other form.

MonitorStream no longer drops script, Unix-socket and IPv6 commands.
MONITOR reports the source of a command run by a script as [db lua], of a
Unix-socket client as [db unix:/path] and of an IPv6 client as
[db [::1]:port]. The parser read the source as a SocketAddr and closed the
field at its first ], so all three failed to parse, and the stream skipped
them without a trace: a consumer never saw what a script ran. The three forms
are now parsed, and a form the parser does not know is delivered as
MonitoredCommandSource::Unknown instead of being skipped.

MonitorStream::undecodable_messages counts the events the stream skipped
because it could not decode them, the way dropped_messages counts the ones
it discarded under memory pressure.