Struct SigningHints 

pub struct SigningHints { /* private fields */ }

Optional hints to override auto-resolved transaction parameters.

All fields default to None / false. Unset fields are resolved automatically from the RPC node during FyndClient::swap_payload.

Build via the setter methods; all options are unset by default.

Implementations

impl SigningHints

pub fn with_sender(self, sender: Address) -> Self

Override the sender address. If not set, falls back to the address configured on the client via FyndClientBuilder::with_sender.

pub fn with_nonce(self, nonce: u64) -> Self

Override the transaction nonce. If not set, fetched via eth_getTransactionCount.

pub fn with_max_fee_per_gas(self, max_fee_per_gas: u128) -> Self

Override maxFeePerGas (wei). If not set, estimated via eth_feeHistory.

pub fn with_max_priority_fee_per_gas( self, max_priority_fee_per_gas: u128, ) -> Self

Override maxPriorityFeePerGas (wei). If not set, estimated alongside max_fee_per_gas.

pub fn with_gas_limit(self, gas_limit: u64) -> Self

Override the gas limit. If not set, estimated via eth_estimateGas against the current chain state. Set explicitly to opt out (e.g. use quote.gas_estimate() as a pre-buffered fallback).

pub fn with_simulate(self, simulate: bool) -> Self

When true, simulate the transaction via eth_call before returning. A simulation failure results in FyndError::SimulationFailed.

pub fn sender(&self) -> Option<Address>

The configured sender override, or None to fall back to the client default.

pub fn nonce(&self) -> Option<u64>

The configured nonce override, or None to fetch from the RPC node.

pub fn max_fee_per_gas(&self) -> Option<u128>

The configured maxFeePerGas override (wei), or None to estimate.

pub fn max_priority_fee_per_gas(&self) -> Option<u128>

The configured maxPriorityFeePerGas override (wei), or None to estimate.

pub fn gas_limit(&self) -> Option<u64>

The configured gas limit override, or None to use the quote’s estimate.

pub fn simulate(&self) -> bool

Whether to simulate the transaction via eth_call before returning.

Trait Implementations

impl Default for SigningHints

fn default() -> SigningHints

Returns the “default value” for a type.