https://github.com/solana-labs/solana/pull/25744
separated durable nonce and blockhash domains, which will stop double
execution going forward. However it is possible that a durable
transaction has *already* been executed once as a normal transaction and
it is now a valid durable transaction. #25744 cannot stop such
transactions to be re-executed until the nonce accounts are advanced.
This commit adds a new nonce version indicating that the nonce is moved
out of the blockhash domain, and permanently disables durable
transactions for legacy nonces which are in the blockhash domain.
AdvanceNonceAccount instruction updates nonce to blockhash. This makes it
possible that a durable transaction is executed twice both as a normal
transaction and a nonce transaction if it uses blockhash (as opposed to nonce)
for its recent_blockhash field.
The commit prevents this double execution by separating nonce and blockhash
domains; when advancing nonce account, blockhash is hashed with a fixed string.
As a result a blockhash cannot be a valid nonce value; and if transaction was
once executed as a normal transaction it cannot be re-executed as a durable
transaction again and vice-versa.
* Pass pubkey in to account-decoder for sysvars
* Decode sysvar accounts
* Decode config accounts; move validator-info lower
* Decode stake accounts
* Review comments
* Stringify any account lamports and epochs that can be set to u64::MAX
* Fix comment and make less pub
* Add account-decoder crate and use to decode vote and system (nonce) accounts
* Update docs
* Rename RpcAccount struct
* s/Rpc/Display
* Call it jsonParsed and update docs
* Revert "s/Rpc/Display"
This reverts commit 6e7149f503f560f1e9237981058ff05642bb7db5.
* s/Rpc/Ui
* Add tests
* Ui more things
* Comments
behzad nouri
Michael Vines
Tyera Eulberg