Function estimate_fee

pub async fn estimate_fee<P>(
    envelope: &TransactionEnvelope,
    provider: &P,
    operations_override: Option<usize>,
) -> Result<u64, StellarTransactionUtilsError>
where
    P: StellarProviderTrait + Send + Sync,

Estimate transaction fee in XLM (stroops) based on envelope content

This function intelligently estimates fees by:

1. Checking if the transaction needs simulation (contains Soroban operations)
2. If simulation is needed, performs simulation and uses min_resource_fee from the response
3. If simulation is not needed, counts operations and uses estimate_base_fee

Arguments

• envelope - The transaction envelope to estimate fees for
• provider - Stellar provider for simulation (required if simulation is needed)
• operations_override - Optional override for operations count (useful when operations will be added, e.g., +1 for fee payment)

Returns

Estimated fee in stroops (XLM)