This commit fixes the background crashes with termination code
0xdead10cc.
Those crashes were caused by the fact that NostrDB was being stored on
the shared app container (Because our app extensions need NostrDB
data), and iOS kills any process that holds a file lock after the
process is backgrounded.
Other developers in the field have run into similar problems in the past
(with shared SQLite databases or shared SwiftData), and they generally
recommend not to place those database in shared containers at all,
mentioning that 0xdead10cc crashes are almost inevitable otherwise:
- https://ryanashcraft.com/sqlite-databases-in-app-group-containers/
- https://inessential.com/2020/02/13/how_we_fixed_the_dreaded_0xdead10cc_cras.html
Since iOS aggressively backgrounds and terminates processes with tight
timing constraints that are mostly outside our control (despite using
Apple's recommended mechanisms, such as requesting more time to perform
closing operations), this fix aims to address the issue by a different
storage architecture.
Instead of keeping NostrDB data on the shared app container and handling
the closure/opening of the database with the app lifecycle signals, keep
the main NostrDB database file in the app's private container, and instead
take periodic read-only snapshots of NostrDB in the shared container, so as
to allow extensions to have recent NostrDB data without all the
complexities of keeping the main file in the shared container.
This does have the tradeoff that more storage will be used by NostrDB
due to file duplication, but that can be mitigated via other techniques
if necessary.
Closes: https://github.com/damus-io/damus/issues/2638
Closes: https://github.com/damus-io/damus/issues/3463
Changelog-Fixed: Fixed background crashes with error code 0xdead10cc
Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
This is a large refactor that aims to improve performance by offloading
RelayPool computations into a separate actor outside the main thread.
This should reduce congestion on the main thread and thus improve UI
performance.
Also, the internal subscription callback mechanism was changed to use
AsyncStreams to prevent race conditions newly found in that area of the
code.
Changelog-Fixed: Added performance improvements to timeline scrolling
Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
This commit fixes a regression on the highlighter and share extensions,
which was caused by a change in the code's architecture, which required
the network manager to be initialized.
Fixes: 8d48f77d95138c93ed93989989fa930b61c2d6fb
Closes: https://github.com/damus-io/damus/issues/2955
Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
This commit implements a new layer called NostrNetworkManager,
responsible for managing interactions with the Nostr network, and
providing a higher level API that is easier and more secure to use for
the layer above it.
It also integrates it with the rest of the app, by moving RelayPool and PostBox
into NostrNetworkManager, along with all their usages.
Changelog-Added: Added NIP-65 relay list support
Changelog-Changed: Improved robustness of relay list handling
Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
There was an issue where profiles on Damus would not load when switching
back and forth between the extension and Damus.
This commit fixes that by closing NostrDB when the extension is backgrounded
Testing
-------
PASS
Device: iPhone 13 Mini
iOS: 17.6.1
Damus: This commit
Steps:
1. Go to a webpage in safari, and open the highlight extension
2. With the highlight extension open, switch apps to Damus (without closing the extension)
3. Make sure profiles can be loaded on Damus
Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
This commit adds a highlighting extension for web pages. This works on
Safari, and can be used by selecting a text on a page and hitting the
share button at the bottom of the Safari UI
To make this possible, some refactoring was necessary:
1. Several sources were included in the extension bundle to provide access to DamusState, PostView, and the postbox
2. UIApplication.shared was replaced with `this_app`, which routes to UIApplication.shared on the main app bundle,
and routes to a bogus UIApplication() in the extension. This is needed because UIApplication.shared cannot be used on an extension.
3. Some items were moved to different files to facilitate the transition.
The extension itself uses PostView, and implements views for several edge cases, and tries to handle the note publishing process gracefully.
Changelog-Added: Add highlighter for web pages
Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
