This PR is upstreaming changes in the Seraphis lib here: https://github.com/UkoeHB/monero/pull/39. The changes to the serialization header allow clean passing
of extra arguments to field serialization in the DSL. This is used mainly to pass implied sizes of containers during deserialization to make the format more
compact. For example, if my object has two containers A & B which must be the same size, I can serialize only the size of container A. Then, during
deserialization, when I deserialize A, I can then use A's size to deserialize B.
Depends on #9286.
This PR is upstreaming changes in the Seraphis lib here: https://github.com/UkoeHB/monero/pull/39. This header adds a macro `VA_ARGS_COMMAPREFIX`
which, when passed `__VA_ARGS__`, expands to `, __VA_ARGS__` unless the length of `__VA_ARGS__` is 0, in which case it expands to nothing. This
macro is useful for passing/declaring optional function arguments.
Behavior before: when start_height > chain tip, response fails
Behavior after: when req.high_height_ok is true && req.start_height
> chain tip, server rerturns a successful response that includes
chain height
- When background syncing, the wallet wipes the spend key
from memory and processes all new transactions. The wallet saves
all receives, spends, and "plausible" spends of receives the
wallet does not know key images for.
- When background sync disabled, the wallet processes all
background synced txs and then clears the background sync cache.
- Adding "plausible" spends to the background sync cache ensures
that the wallet does not need to query the daemon to see if any
received outputs were spent while background sync was enabled.
This would harm privacy especially for users of 3rd party daemons.
- To enable the feature in the CLI wallet, the user can set
background-sync to reuse-wallet-password or
custom-background-password and the wallet automatically syncs in
the background when the wallet locks, then processes all
background synced txs when the wallet is unlocked.
- The custom-background-password option enables the user to
open a distinct background wallet that only has a view key saved
and can be opened/closed/synced separately from the main wallet.
When the main wallet opens, it processes the background wallet's
cache.
- To enable the feature in the RPC wallet, there is a new
`/setup_background_sync` endpoint.
- HW, multsig and view-only wallets cannot background sync.
