Enum bdk::wallet::AddressIndex

pub enum AddressIndex {
    New,
    LastUnused,
    Peek(u32),
    Reset(u32),
}

The address index selection strategy to use to derived an address from the wallet’s external descriptor. See Wallet::get_address. If you’re unsure which one to use use WalletIndex::New.

Variants

New

Return a new address after incrementing the current descriptor index.

LastUnused

Return the address for the current descriptor index if it has not been used in a received transaction. Otherwise return a new address as with AddressIndex::New.

Use with caution, if the wallet has not yet detected an address has been used it could return an already used address. This function is primarily meant for situations where the caller is untrusted; for example when deriving donation addresses on-demand for a public web page.

Peek(u32)

Return the address for a specific descriptor index. Does not change the current descriptor index used by AddressIndex::New and AddressIndex::LastUsed. The index must be non-hardened, i.e., < 2**31.

Use with caution, if an index is given that is less than the current descriptor index then the returned address may have already been used.

Reset(u32)

Return the address for a specific descriptor index and reset the current descriptor index used by AddressIndex::New and AddressIndex::LastUsed to this value. The index must be non-hardened, i.e. < 2**31

Use with caution, if an index is given that is less than the current descriptor index then the returned address and subsequent addresses returned by calls to AddressIndex::New and AddressIndex::LastUsed may have already been used. Also if the index is reset to a value earlier than the crate::blockchain::Blockchain stop_gap (default is 20) then a larger stop_gap should be used to monitor for all possibly used addresses.

Trait Implementations

impl Debug for AddressIndex

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.