After thinking this is not a good move because it actually adds unnecessary comparisons and is bad for running time

Done in https://iron.lily-is.land/D229

In T75#2565, @tusooa wrote:

@nannanko I cannot seem to reproduce this bug. Is it still a problem for you? My guess is that it is somehow fixed by @apr3vau .

To be resolved altogether with the event store (well, if we aren't displaying all of the events then we should be fine)

@nannanko I cannot seem to reproduce this bug. Is it still a problem for you?

Upstream bug fixed, closing because I can no longer reproduce.

Resolved by https://iron.lily-is.land/D238 https://iron.lily-is.land/D240

Instead of sync forever in Client, we can do one sync cycle in the function, and give control to the user of libkazv. Then, in kazv we can implement the retry logic.

FileHandler analyzes eventContent, checks whether it is encrypted and contains thumbnails, and performs download/cache.