Interface giving clients (wallet processes, maybe other analysis tools in the future) ability to access to the chain state, receive notifications, estimate fees, and submit transactions.
Declared in <interfaces/chain.h>
class Chain;TODO: Current chain methods are too low level, exposing too much of the internal workings of the bitcoin node, and not being very convenient to use. Chain methods should be cleaned up and simplified over time. Examples:
* The initMessages() and showProgress() methods which the wallet uses to send notifications to the GUI should go away when GUI and wallet can directly communicate with each other without going through the node (https://github.com/bitcoin/bitcoin/pull/15288#discussion_r253321096).
* The handleRpc, registerRpcs, rpcEnableDeprecated methods and other RPC methods can go away if wallets listen for HTTP requests on their own ports instead of registering to handle requests on the node HTTP port.
* Move fee estimation queries to an asynchronous interface and let the wallet cache it, fee estimation being driven by node mempool, wallet should be the consumer.
* guessVerificationProgress and similar methods can go away if rescan logic moves out of the wallet, and the wallet just requests scans from the node (https://github.com/bitcoin/bitcoin/issues/11756)
| Name | Description |
|---|---|
::wallet::AddWalletSetting | Add wallet name to persistent configuration so it will be loaded on startup. |
::wallet::AttemptSelection | Attempt to find a valid input set that preserves privacy by not mixing OutputTypes. ChooseSelectionResult() will be called on each OutputType individually and the best the solution (according to the waste metric) will be chosen. If a valid input cannot be found from any single OutputType, fallback to running ChooseSelectionResult() over all available coins. |
::wallet::ChooseSelectionResult | Attempt to find a valid input set that meets the provided eligibility filter and target. Multiple coin selection algorithms will be run and the input set that produces the least waste (according to the waste metric) will be chosen. |
::wallet::RemoveWalletSetting | Remove wallet name from persistent configuration so it will not be loaded on startup. |