Hold scheduler lock during the whole procedure of scheduler starting
and stopping. This ensures that two processes can't get two read locks
in parallel and start loops or send the stop signal twice.
Also remove shutdown channels: it is enough to wait
for the loop handle without receiving a shutdown signal
from the end of the loop.
Assign location.kml message parts to the trash chat,
but return non-trash chat_id so locations are assigned
to the correct chat.
Due to a bug introduced in
7968f55191
previously location.kml messages resulted in
empty message bubbles on the receiver.
* add dc_resend_msgs() to ffi
* add 'resend' to repl
* implement resend_msgs()
* allow only resending if allowed by chat-protection
this means, resending is denied if a chat is protected and we cannot encrypt
(normally, however, we should not arrive in that state)
* allow only resending of normal, non-info-messages
* allow only resending of own messages
* reset sending state to OutPending on resending
the resulting state is always OutDelivered first,
OutMdnRcvd again would be applied when a read receipt is received.
preserving old state is doable, however,
maybe this simple approach is also good enough, at least for now
(or maybe the simple approach is even just fine :)
another thing: when we upgrade to resending foreign messages,
we do not have a simple way to mark them as pending
as incoming message just do not have such a state -
but this is sth. for the future.
The limit on the number of jobs executed in a row was introduced to
prevent large queues of small jobs like MarkseenMsgOnImap, MoveMsg and
DeleteMsgOnImap from delaying message fetching. Since all these jobs
are now removed and IMAP operations they did are now batched, it is
impossible to have 20 or more queued IMAP jobs.
When removing an account, try 60 times with 1 second sleep in between
in case removal of database files fails. This happens on Windows
platform sometimes due to a known bug in r2d2 which may result in 30
seconds delay until all connections are closed [1].
[1] https://github.com/sfackler/r2d2/issues/99
MarkseenMsgOnImap job, that was responsible for marking messages as
seen on IMAP and sending MDNs, has been removed.
Messages waiting to be marked as seen are now stored in a
single-column imap_markseen table consisting of foreign keys pointing
to corresponding imap table records.
Messages are marked as seen in batches in the inbox loop. UIDs are
grouped by folders to reduce the number of requests, including folder
selection requests. UID grouping logic has been factored out of
move_delete_messages into UidGrouper iterator to avoid code duplication.
Messages are marked as seen right before fetching from the inbox
folder. This ensures that even if new messages arrive into inbox while
the connection has another folder selected to mark messages there, all
messages are fetched before going IDLE. Ideally marking messages as
seen should be done after fetching and moving, as it is a low-priority
task, but this requires skipping IDLE if UIDNEXT has advanced since
previous time inbox has been selected. This is outside of the scope of
this change.
MDNs are now queued independently of marking the messages as seen.
SendMdn job is created directly rather than after marking the message
as seen on IMAP. Previously sending MDNs was done in MarkseenMsgOnImap
avoid duplicate MDN sending by setting $MDNSent flag together with
\Seen flag and skipping MDN sending if the flag is already set. This
is not the case anymore as $MDNSent flag support has been removed in
9c077c98cd and duplicate MDN sending in
multi-device case is avoided by synchronizing Seen status since
833e5f46cc as long as the server
supports CONDSTORE extension.
* show 'Not connected' if storage information are not yet available
'One moment' is a bit misleading in case the device is offline
as it will take more than a moment until that will be updated :)
* update CHANGELOG
this bypasses the replication safety introduced by letting the caller track the last serial,
however, in case of bots that do not track much state and do not playback updates anyway,
it is still useful.
