anvil/eth/

api.rs

use super::{
    backend::mem::{BlockRequest, DatabaseRef, State},
    sign::build_typed_transaction,
};
use crate::{
    ClientFork, LoggingManager, Miner, MiningMode, StorageInfo,
    eth::{
        backend::{
            self,
            db::SerializableState,
            mem::{MIN_CREATE_GAS, MIN_TRANSACTION_GAS},
            notifications::NewBlockNotifications,
            validate::TransactionValidator,
        },
        error::{
            BlockchainError, FeeHistoryError, InvalidTransactionError, Result, ToRpcResponseResult,
        },
        fees::{FeeDetails, FeeHistoryCache, MIN_SUGGESTED_PRIORITY_FEE},
        macros::node_info,
        miner::FixedBlockTimeMiner,
        pool::{
            Pool,
            transactions::{
                PoolTransaction, TransactionOrder, TransactionPriority, TxMarker, to_marker,
            },
        },
        sign::{self, Signer},
    },
    filter::{EthFilter, Filters, LogsFilter},
    mem::transaction_build,
};
use alloy_consensus::{
    Account, Blob,
    transaction::{Recovered, eip4844::TxEip4844Variant},
};
use alloy_dyn_abi::TypedData;
use alloy_eips::{
    eip2718::Encodable2718,
    eip7910::{EthConfig, EthForkConfig},
};
use alloy_evm::overrides::{OverrideBlockHashes, apply_state_overrides};
use alloy_network::{
    AnyRpcBlock, AnyRpcTransaction, BlockResponse, TransactionBuilder, TransactionResponse,
    eip2718::Decodable2718,
};
use alloy_primitives::{
    Address, B64, B256, Bytes, Signature, TxHash, TxKind, U64, U256,
    map::{HashMap, HashSet},
};
use alloy_rpc_types::{
    AccessList, AccessListResult, BlockId, BlockNumberOrTag as BlockNumber, BlockTransactions,
    EIP1186AccountProofResponse, FeeHistory, Filter, FilteredParams, Index, Log, Work,
    anvil::{
        ForkedNetwork, Forking, Metadata, MineOptions, NodeEnvironment, NodeForkConfig, NodeInfo,
    },
    request::TransactionRequest,
    simulate::{SimulatePayload, SimulatedBlock},
    state::{AccountOverride, EvmOverrides, StateOverridesBuilder},
    trace::{
        filter::TraceFilter,
        geth::{GethDebugTracingCallOptions, GethDebugTracingOptions, GethTrace},
        parity::LocalizedTransactionTrace,
    },
    txpool::{TxpoolContent, TxpoolInspect, TxpoolInspectSummary, TxpoolStatus},
};
use alloy_serde::WithOtherFields;
use alloy_sol_types::{SolCall, SolValue, sol};
use alloy_transport::TransportErrorKind;
use anvil_core::{
    eth::{
        EthRequest,
        block::BlockInfo,
        transaction::{
            PendingTransaction, ReceiptResponse, TypedTransaction, TypedTransactionRequest,
            transaction_request_to_typed,
        },
        wallet::WalletCapabilities,
    },
    types::{ReorgOptions, TransactionData},
};
use anvil_rpc::{error::RpcError, response::ResponseResult};
use foundry_common::provider::ProviderBuilder;
use foundry_evm::decode::RevertDecoder;
use futures::{
    StreamExt, TryFutureExt,
    channel::{mpsc::Receiver, oneshot},
};
use parking_lot::RwLock;
use revm::{
    context::BlockEnv,
    context_interface::{block::BlobExcessGasAndPrice, result::Output},
    database::CacheDB,
    interpreter::{InstructionResult, return_ok, return_revert},
    primitives::eip7702::PER_EMPTY_ACCOUNT_COST,
};
use std::{sync::Arc, time::Duration};
use tokio::{
    sync::mpsc::{UnboundedReceiver, unbounded_channel},
    try_join,
};

/// The client version: `anvil/v{major}.{minor}.{patch}`
pub const CLIENT_VERSION: &str = concat!("anvil/v", env!("CARGO_PKG_VERSION"));

/// The entry point for executing eth api RPC call - The Eth RPC interface.
///
/// This type is cheap to clone and can be used concurrently
#[derive(Clone)]
pub struct EthApi {
    /// The transaction pool
    pool: Arc<Pool>,
    /// Holds all blockchain related data
    /// In-Memory only for now
    pub backend: Arc<backend::mem::Backend>,
    /// Whether this node is mining
    is_mining: bool,
    /// available signers
    signers: Arc<Vec<Box<dyn Signer>>>,
    /// data required for `eth_feeHistory`
    fee_history_cache: FeeHistoryCache,
    /// max number of items kept in fee cache
    fee_history_limit: u64,
    /// access to the actual miner
    ///
    /// This access is required in order to adjust miner settings based on requests received from
    /// custom RPC endpoints
    miner: Miner,
    /// allows to enabled/disable logging
    logger: LoggingManager,
    /// Tracks all active filters
    filters: Filters,
    /// How transactions are ordered in the pool
    transaction_order: Arc<RwLock<TransactionOrder>>,
    /// Whether we're listening for RPC calls
    net_listening: bool,
    /// The instance ID. Changes on every reset.
    instance_id: Arc<RwLock<B256>>,
}

impl EthApi {
    /// Creates a new instance
    #[expect(clippy::too_many_arguments)]
    pub fn new(
        pool: Arc<Pool>,
        backend: Arc<backend::mem::Backend>,
        signers: Arc<Vec<Box<dyn Signer>>>,
        fee_history_cache: FeeHistoryCache,
        fee_history_limit: u64,
        miner: Miner,
        logger: LoggingManager,
        filters: Filters,
        transactions_order: TransactionOrder,
    ) -> Self {
        Self {
            pool,
            backend,
            is_mining: true,
            signers,
            fee_history_cache,
            fee_history_limit,
            miner,
            logger,
            filters,
            net_listening: true,
            transaction_order: Arc::new(RwLock::new(transactions_order)),
            instance_id: Arc::new(RwLock::new(B256::random())),
        }
    }

    /// Executes the [EthRequest] and returns an RPC [ResponseResult].
    pub async fn execute(&self, request: EthRequest) -> ResponseResult {
        trace!(target: "rpc::api", "executing eth request");
        let response = match request.clone() {
            EthRequest::Web3ClientVersion(()) => self.client_version().to_rpc_result(),
            EthRequest::Web3Sha3(content) => self.sha3(content).to_rpc_result(),
            EthRequest::EthGetAccount(addr, block) => {
                self.get_account(addr, block).await.to_rpc_result()
            }
            EthRequest::EthGetAccountInfo(addr, block) => {
                self.get_account_info(addr, block).await.to_rpc_result()
            }
            EthRequest::EthGetBalance(addr, block) => {
                self.balance(addr, block).await.to_rpc_result()
            }
            EthRequest::EthGetTransactionByHash(hash) => {
                self.transaction_by_hash(hash).await.to_rpc_result()
            }
            EthRequest::EthSendTransaction(request) => {
                self.send_transaction(*request).await.to_rpc_result()
            }
            EthRequest::EthSendTransactionSync(request) => {
                self.send_transaction_sync(*request).await.to_rpc_result()
            }
            EthRequest::EthChainId(_) => self.eth_chain_id().to_rpc_result(),
            EthRequest::EthNetworkId(_) => self.network_id().to_rpc_result(),
            EthRequest::NetListening(_) => self.net_listening().to_rpc_result(),
            EthRequest::EthGasPrice(_) => self.eth_gas_price().to_rpc_result(),
            EthRequest::EthMaxPriorityFeePerGas(_) => {
                self.gas_max_priority_fee_per_gas().to_rpc_result()
            }
            EthRequest::EthBlobBaseFee(_) => self.blob_base_fee().to_rpc_result(),
            EthRequest::EthAccounts(_) => self.accounts().to_rpc_result(),
            EthRequest::EthBlockNumber(_) => self.block_number().to_rpc_result(),
            EthRequest::EthGetStorageAt(addr, slot, block) => {
                self.storage_at(addr, slot, block).await.to_rpc_result()
            }
            EthRequest::EthGetBlockByHash(hash, full) => {
                if full {
                    self.block_by_hash_full(hash).await.to_rpc_result()
                } else {
                    self.block_by_hash(hash).await.to_rpc_result()
                }
            }
            EthRequest::EthGetBlockByNumber(num, full) => {
                if full {
                    self.block_by_number_full(num).await.to_rpc_result()
                } else {
                    self.block_by_number(num).await.to_rpc_result()
                }
            }
            EthRequest::EthGetTransactionCount(addr, block) => {
                self.transaction_count(addr, block).await.to_rpc_result()
            }
            EthRequest::EthGetTransactionCountByHash(hash) => {
                self.block_transaction_count_by_hash(hash).await.to_rpc_result()
            }
            EthRequest::EthGetTransactionCountByNumber(num) => {
                self.block_transaction_count_by_number(num).await.to_rpc_result()
            }
            EthRequest::EthGetUnclesCountByHash(hash) => {
                self.block_uncles_count_by_hash(hash).await.to_rpc_result()
            }
            EthRequest::EthGetUnclesCountByNumber(num) => {
                self.block_uncles_count_by_number(num).await.to_rpc_result()
            }
            EthRequest::EthGetCodeAt(addr, block) => {
                self.get_code(addr, block).await.to_rpc_result()
            }
            EthRequest::EthGetProof(addr, keys, block) => {
                self.get_proof(addr, keys, block).await.to_rpc_result()
            }
            EthRequest::EthSign(addr, content) => self.sign(addr, content).await.to_rpc_result(),
            EthRequest::PersonalSign(content, addr) => {
                self.sign(addr, content).await.to_rpc_result()
            }
            EthRequest::EthSignTransaction(request) => {
                self.sign_transaction(*request).await.to_rpc_result()
            }
            EthRequest::EthSignTypedData(addr, data) => {
                self.sign_typed_data(addr, data).await.to_rpc_result()
            }
            EthRequest::EthSignTypedDataV3(addr, data) => {
                self.sign_typed_data_v3(addr, data).await.to_rpc_result()
            }
            EthRequest::EthSignTypedDataV4(addr, data) => {
                self.sign_typed_data_v4(addr, &data).await.to_rpc_result()
            }
            EthRequest::EthSendRawTransaction(tx) => {
                self.send_raw_transaction(tx).await.to_rpc_result()
            }
            EthRequest::EthSendRawTransactionSync(tx) => {
                self.send_raw_transaction_sync(tx).await.to_rpc_result()
            }
            EthRequest::EthCall(call, block, state_override, block_overrides) => self
                .call(call, block, EvmOverrides::new(state_override, block_overrides))
                .await
                .to_rpc_result(),
            EthRequest::EthSimulateV1(simulation, block) => {
                self.simulate_v1(simulation, block).await.to_rpc_result()
            }
            EthRequest::EthCreateAccessList(call, block) => {
                self.create_access_list(call, block).await.to_rpc_result()
            }
            EthRequest::EthEstimateGas(call, block, state_override, block_overrides) => self
                .estimate_gas(call, block, EvmOverrides::new(state_override, block_overrides))
                .await
                .to_rpc_result(),
            EthRequest::EthGetRawTransactionByHash(hash) => {
                self.raw_transaction(hash).await.to_rpc_result()
            }
            EthRequest::GetBlobByHash(hash) => {
                self.anvil_get_blob_by_versioned_hash(hash).to_rpc_result()
            }
            EthRequest::GetBlobByTransactionHash(hash) => {
                self.anvil_get_blob_by_tx_hash(hash).to_rpc_result()
            }
            EthRequest::EthGetRawTransactionByBlockHashAndIndex(hash, index) => {
                self.raw_transaction_by_block_hash_and_index(hash, index).await.to_rpc_result()
            }
            EthRequest::EthGetRawTransactionByBlockNumberAndIndex(num, index) => {
                self.raw_transaction_by_block_number_and_index(num, index).await.to_rpc_result()
            }
            EthRequest::EthGetTransactionByBlockHashAndIndex(hash, index) => {
                self.transaction_by_block_hash_and_index(hash, index).await.to_rpc_result()
            }
            EthRequest::EthGetTransactionByBlockNumberAndIndex(num, index) => {
                self.transaction_by_block_number_and_index(num, index).await.to_rpc_result()
            }
            EthRequest::EthGetTransactionReceipt(tx) => {
                self.transaction_receipt(tx).await.to_rpc_result()
            }
            EthRequest::EthGetBlockReceipts(number) => {
                self.block_receipts(number).await.to_rpc_result()
            }
            EthRequest::EthGetUncleByBlockHashAndIndex(hash, index) => {
                self.uncle_by_block_hash_and_index(hash, index).await.to_rpc_result()
            }
            EthRequest::EthGetUncleByBlockNumberAndIndex(num, index) => {
                self.uncle_by_block_number_and_index(num, index).await.to_rpc_result()
            }
            EthRequest::EthGetLogs(filter) => self.logs(filter).await.to_rpc_result(),
            EthRequest::EthGetWork(_) => self.work().to_rpc_result(),
            EthRequest::EthSyncing(_) => self.syncing().to_rpc_result(),
            EthRequest::EthConfig(_) => self.config().to_rpc_result(),
            EthRequest::EthSubmitWork(nonce, pow, digest) => {
                self.submit_work(nonce, pow, digest).to_rpc_result()
            }
            EthRequest::EthSubmitHashRate(rate, id) => {
                self.submit_hashrate(rate, id).to_rpc_result()
            }
            EthRequest::EthFeeHistory(count, newest, reward_percentiles) => {
                self.fee_history(count, newest, reward_percentiles).await.to_rpc_result()
            }
            // non eth-standard rpc calls
            EthRequest::DebugGetRawTransaction(hash) => {
                self.raw_transaction(hash).await.to_rpc_result()
            }
            // non eth-standard rpc calls
            EthRequest::DebugTraceTransaction(tx, opts) => {
                self.debug_trace_transaction(tx, opts).await.to_rpc_result()
            }
            // non eth-standard rpc calls
            EthRequest::DebugTraceCall(tx, block, opts) => {
                self.debug_trace_call(tx, block, opts).await.to_rpc_result()
            }
            EthRequest::DebugCodeByHash(hash, block) => {
                self.debug_code_by_hash(hash, block).await.to_rpc_result()
            }
            EthRequest::TraceTransaction(tx) => self.trace_transaction(tx).await.to_rpc_result(),
            EthRequest::TraceBlock(block) => self.trace_block(block).await.to_rpc_result(),
            EthRequest::TraceFilter(filter) => self.trace_filter(filter).await.to_rpc_result(),
            EthRequest::ImpersonateAccount(addr) => {
                self.anvil_impersonate_account(addr).await.to_rpc_result()
            }
            EthRequest::StopImpersonatingAccount(addr) => {
                self.anvil_stop_impersonating_account(addr).await.to_rpc_result()
            }
            EthRequest::AutoImpersonateAccount(enable) => {
                self.anvil_auto_impersonate_account(enable).await.to_rpc_result()
            }
            EthRequest::ImpersonateSignature(signature, address) => {
                self.anvil_impersonate_signature(signature, address).await.to_rpc_result()
            }
            EthRequest::GetAutoMine(()) => self.anvil_get_auto_mine().to_rpc_result(),
            EthRequest::Mine(blocks, interval) => {
                self.anvil_mine(blocks, interval).await.to_rpc_result()
            }
            EthRequest::SetAutomine(enabled) => {
                self.anvil_set_auto_mine(enabled).await.to_rpc_result()
            }
            EthRequest::SetIntervalMining(interval) => {
                self.anvil_set_interval_mining(interval).to_rpc_result()
            }
            EthRequest::GetIntervalMining(()) => self.anvil_get_interval_mining().to_rpc_result(),
            EthRequest::DropTransaction(tx) => {
                self.anvil_drop_transaction(tx).await.to_rpc_result()
            }
            EthRequest::DropAllTransactions() => {
                self.anvil_drop_all_transactions().await.to_rpc_result()
            }
            EthRequest::Reset(fork) => {
                self.anvil_reset(fork.and_then(|p| p.params)).await.to_rpc_result()
            }
            EthRequest::SetBalance(addr, val) => {
                self.anvil_set_balance(addr, val).await.to_rpc_result()
            }
            EthRequest::AddBalance(addr, val) => {
                self.anvil_add_balance(addr, val).await.to_rpc_result()
            }
            EthRequest::DealERC20(addr, token_addr, val) => {
                self.anvil_deal_erc20(addr, token_addr, val).await.to_rpc_result()
            }
            EthRequest::SetERC20Allowance(owner, spender, token_addr, val) => self
                .anvil_set_erc20_allowance(owner, spender, token_addr, val)
                .await
                .to_rpc_result(),
            EthRequest::SetCode(addr, code) => {
                self.anvil_set_code(addr, code).await.to_rpc_result()
            }
            EthRequest::SetNonce(addr, nonce) => {
                self.anvil_set_nonce(addr, nonce).await.to_rpc_result()
            }
            EthRequest::SetStorageAt(addr, slot, val) => {
                self.anvil_set_storage_at(addr, slot, val).await.to_rpc_result()
            }
            EthRequest::SetCoinbase(addr) => self.anvil_set_coinbase(addr).await.to_rpc_result(),
            EthRequest::SetChainId(id) => self.anvil_set_chain_id(id).await.to_rpc_result(),
            EthRequest::SetLogging(log) => self.anvil_set_logging(log).await.to_rpc_result(),
            EthRequest::SetMinGasPrice(gas) => {
                self.anvil_set_min_gas_price(gas).await.to_rpc_result()
            }
            EthRequest::SetNextBlockBaseFeePerGas(gas) => {
                self.anvil_set_next_block_base_fee_per_gas(gas).await.to_rpc_result()
            }
            EthRequest::DumpState(preserve_historical_states) => self
                .anvil_dump_state(preserve_historical_states.and_then(|s| s.params))
                .await
                .to_rpc_result(),
            EthRequest::LoadState(buf) => self.anvil_load_state(buf).await.to_rpc_result(),
            EthRequest::NodeInfo(_) => self.anvil_node_info().await.to_rpc_result(),
            EthRequest::AnvilMetadata(_) => self.anvil_metadata().await.to_rpc_result(),
            EthRequest::EvmSnapshot(_) => self.evm_snapshot().await.to_rpc_result(),
            EthRequest::EvmRevert(id) => self.evm_revert(id).await.to_rpc_result(),
            EthRequest::EvmIncreaseTime(time) => self.evm_increase_time(time).await.to_rpc_result(),
            EthRequest::EvmSetNextBlockTimeStamp(time) => {
                if time >= U256::from(u64::MAX) {
                    return ResponseResult::Error(RpcError::invalid_params(
                        "The timestamp is too big",
                    ));
                }
                let time = time.to::<u64>();
                self.evm_set_next_block_timestamp(time).to_rpc_result()
            }
            EthRequest::EvmSetTime(timestamp) => {
                if timestamp >= U256::from(u64::MAX) {
                    return ResponseResult::Error(RpcError::invalid_params(
                        "The timestamp is too big",
                    ));
                }
                let time = timestamp.to::<u64>();
                self.evm_set_time(time).to_rpc_result()
            }
            EthRequest::EvmSetBlockGasLimit(gas_limit) => {
                self.evm_set_block_gas_limit(gas_limit).to_rpc_result()
            }
            EthRequest::EvmSetBlockTimeStampInterval(time) => {
                self.evm_set_block_timestamp_interval(time).to_rpc_result()
            }
            EthRequest::EvmRemoveBlockTimeStampInterval(()) => {
                self.evm_remove_block_timestamp_interval().to_rpc_result()
            }
            EthRequest::EvmMine(mine) => {
                self.evm_mine(mine.and_then(|p| p.params)).await.to_rpc_result()
            }
            EthRequest::EvmMineDetailed(mine) => {
                self.evm_mine_detailed(mine.and_then(|p| p.params)).await.to_rpc_result()
            }
            EthRequest::SetRpcUrl(url) => self.anvil_set_rpc_url(url).to_rpc_result(),
            EthRequest::EthSendUnsignedTransaction(tx) => {
                self.eth_send_unsigned_transaction(*tx).await.to_rpc_result()
            }
            EthRequest::EnableTraces(_) => self.anvil_enable_traces().await.to_rpc_result(),
            EthRequest::EthNewFilter(filter) => self.new_filter(filter).await.to_rpc_result(),
            EthRequest::EthGetFilterChanges(id) => self.get_filter_changes(&id).await,
            EthRequest::EthNewBlockFilter(_) => self.new_block_filter().await.to_rpc_result(),
            EthRequest::EthNewPendingTransactionFilter(_) => {
                self.new_pending_transaction_filter().await.to_rpc_result()
            }
            EthRequest::EthGetFilterLogs(id) => self.get_filter_logs(&id).await.to_rpc_result(),
            EthRequest::EthUninstallFilter(id) => self.uninstall_filter(&id).await.to_rpc_result(),
            EthRequest::TxPoolStatus(_) => self.txpool_status().await.to_rpc_result(),
            EthRequest::TxPoolInspect(_) => self.txpool_inspect().await.to_rpc_result(),
            EthRequest::TxPoolContent(_) => self.txpool_content().await.to_rpc_result(),
            EthRequest::ErigonGetHeaderByNumber(num) => {
                self.erigon_get_header_by_number(num).await.to_rpc_result()
            }
            EthRequest::OtsGetApiLevel(_) => self.ots_get_api_level().await.to_rpc_result(),
            EthRequest::OtsGetInternalOperations(hash) => {
                self.ots_get_internal_operations(hash).await.to_rpc_result()
            }
            EthRequest::OtsHasCode(addr, num) => self.ots_has_code(addr, num).await.to_rpc_result(),
            EthRequest::OtsTraceTransaction(hash) => {
                self.ots_trace_transaction(hash).await.to_rpc_result()
            }
            EthRequest::OtsGetTransactionError(hash) => {
                self.ots_get_transaction_error(hash).await.to_rpc_result()
            }
            EthRequest::OtsGetBlockDetails(num) => {
                self.ots_get_block_details(num).await.to_rpc_result()
            }
            EthRequest::OtsGetBlockDetailsByHash(hash) => {
                self.ots_get_block_details_by_hash(hash).await.to_rpc_result()
            }
            EthRequest::OtsGetBlockTransactions(num, page, page_size) => {
                self.ots_get_block_transactions(num, page, page_size).await.to_rpc_result()
            }
            EthRequest::OtsSearchTransactionsBefore(address, num, page_size) => {
                self.ots_search_transactions_before(address, num, page_size).await.to_rpc_result()
            }
            EthRequest::OtsSearchTransactionsAfter(address, num, page_size) => {
                self.ots_search_transactions_after(address, num, page_size).await.to_rpc_result()
            }
            EthRequest::OtsGetTransactionBySenderAndNonce(address, nonce) => {
                self.ots_get_transaction_by_sender_and_nonce(address, nonce).await.to_rpc_result()
            }
            EthRequest::OtsGetContractCreator(address) => {
                self.ots_get_contract_creator(address).await.to_rpc_result()
            }
            EthRequest::RemovePoolTransactions(address) => {
                self.anvil_remove_pool_transactions(address).await.to_rpc_result()
            }
            EthRequest::Reorg(reorg_options) => {
                self.anvil_reorg(reorg_options).await.to_rpc_result()
            }
            EthRequest::Rollback(depth) => self.anvil_rollback(depth).await.to_rpc_result(),
            EthRequest::WalletGetCapabilities(()) => self.get_capabilities().to_rpc_result(),
            EthRequest::AnvilAddCapability(addr) => self.anvil_add_capability(addr).to_rpc_result(),
            EthRequest::AnvilSetExecutor(executor_pk) => {
                self.anvil_set_executor(executor_pk).to_rpc_result()
            }
        };

        if let ResponseResult::Error(err) = &response {
            node_info!("\nRPC request failed:");
            node_info!("    Request: {:?}", request);
            node_info!("    Error: {}\n", err);
        }

        response
    }

    fn sign_request(
        &self,
        from: &Address,
        request: TypedTransactionRequest,
    ) -> Result<TypedTransaction> {
        match request {
            TypedTransactionRequest::Deposit(_) => {
                let nil_signature = Signature::from_scalars_and_parity(
                    B256::with_last_byte(1),
                    B256::with_last_byte(1),
                    false,
                );
                return build_typed_transaction(request, nil_signature);
            }
            _ => {
                for signer in self.signers.iter() {
                    if signer.accounts().contains(from) {
                        let signature = signer.sign_transaction(request.clone(), from)?;
                        return build_typed_transaction(request, signature);
                    }
                }
            }
        }
        Err(BlockchainError::NoSignerAvailable)
    }

    async fn block_request(&self, block_number: Option<BlockId>) -> Result<BlockRequest> {
        let block_request = match block_number {
            Some(BlockId::Number(BlockNumber::Pending)) => {
                let pending_txs = self.pool.ready_transactions().collect();
                BlockRequest::Pending(pending_txs)
            }
            _ => {
                let number = self.backend.ensure_block_number(block_number).await?;
                BlockRequest::Number(number)
            }
        };
        Ok(block_request)
    }

    async fn inner_raw_transaction(&self, hash: B256) -> Result<Option<Bytes>> {
        match self.pool.get_transaction(hash) {
            Some(tx) => Ok(Some(tx.transaction.encoded_2718().into())),
            None => match self.backend.transaction_by_hash(hash).await? {
                Some(tx) => Ok(Some(tx.inner.inner.encoded_2718().into())),
                None => Ok(None),
            },
        }
    }

    /// Returns the current client version.
    ///
    /// Handler for ETH RPC call: `web3_clientVersion`
    pub fn client_version(&self) -> Result<String> {
        node_info!("web3_clientVersion");
        Ok(CLIENT_VERSION.to_string())
    }

    /// Returns Keccak-256 (not the standardized SHA3-256) of the given data.
    ///
    /// Handler for ETH RPC call: `web3_sha3`
    pub fn sha3(&self, bytes: Bytes) -> Result<String> {
        node_info!("web3_sha3");
        let hash = alloy_primitives::keccak256(bytes.as_ref());
        Ok(alloy_primitives::hex::encode_prefixed(&hash[..]))
    }

    /// Returns protocol version encoded as a string (quotes are necessary).
    ///
    /// Handler for ETH RPC call: `eth_protocolVersion`
    pub fn protocol_version(&self) -> Result<u64> {
        node_info!("eth_protocolVersion");
        Ok(1)
    }

    /// Returns the number of hashes per second that the node is mining with.
    ///
    /// Handler for ETH RPC call: `eth_hashrate`
    pub fn hashrate(&self) -> Result<U256> {
        node_info!("eth_hashrate");
        Ok(U256::ZERO)
    }

    /// Returns the client coinbase address.
    ///
    /// Handler for ETH RPC call: `eth_coinbase`
    pub fn author(&self) -> Result<Address> {
        node_info!("eth_coinbase");
        Ok(self.backend.coinbase())
    }

    /// Returns true if client is actively mining new blocks.
    ///
    /// Handler for ETH RPC call: `eth_mining`
    pub fn is_mining(&self) -> Result<bool> {
        node_info!("eth_mining");
        Ok(self.is_mining)
    }

    /// Returns the chain ID used for transaction signing at the
    /// current best block. None is returned if not
    /// available.
    ///
    /// Handler for ETH RPC call: `eth_chainId`
    pub fn eth_chain_id(&self) -> Result<Option<U64>> {
        node_info!("eth_chainId");
        Ok(Some(self.backend.chain_id().to::<U64>()))
    }

    /// Returns the same as `chain_id`
    ///
    /// Handler for ETH RPC call: `eth_networkId`
    pub fn network_id(&self) -> Result<Option<String>> {
        node_info!("eth_networkId");
        let chain_id = self.backend.chain_id().to::<u64>();
        Ok(Some(format!("{chain_id}")))
    }

    /// Returns true if client is actively listening for network connections.
    ///
    /// Handler for ETH RPC call: `net_listening`
    pub fn net_listening(&self) -> Result<bool> {
        node_info!("net_listening");
        Ok(self.net_listening)
    }

    /// Returns the current gas price
    fn eth_gas_price(&self) -> Result<U256> {
        node_info!("eth_gasPrice");
        Ok(U256::from(self.gas_price()))
    }

    /// Returns the current gas price
    pub fn gas_price(&self) -> u128 {
        if self.backend.is_eip1559() {
            if self.backend.is_min_priority_fee_enforced() {
                (self.backend.base_fee() as u128).saturating_add(self.lowest_suggestion_tip())
            } else {
                self.backend.base_fee() as u128
            }
        } else {
            self.backend.fees().raw_gas_price()
        }
    }

    /// Returns the excess blob gas and current blob gas price
    pub fn excess_blob_gas_and_price(&self) -> Result<Option<BlobExcessGasAndPrice>> {
        Ok(self.backend.excess_blob_gas_and_price())
    }

    /// Returns a fee per gas that is an estimate of how much you can pay as a priority fee, or
    /// 'tip', to get a transaction included in the current block.
    ///
    /// Handler for ETH RPC call: `eth_maxPriorityFeePerGas`
    pub fn gas_max_priority_fee_per_gas(&self) -> Result<U256> {
        self.max_priority_fee_per_gas()
    }

    /// Returns the base fee per blob required to send a EIP-4844 tx.
    ///
    /// Handler for ETH RPC call: `eth_blobBaseFee`
    pub fn blob_base_fee(&self) -> Result<U256> {
        Ok(U256::from(self.backend.fees().base_fee_per_blob_gas()))
    }

    /// Returns the block gas limit
    pub fn gas_limit(&self) -> U256 {
        U256::from(self.backend.gas_limit())
    }

    /// Returns the accounts list
    ///
    /// Handler for ETH RPC call: `eth_accounts`
    pub fn accounts(&self) -> Result<Vec<Address>> {
        node_info!("eth_accounts");
        let mut unique = HashSet::new();
        let mut accounts: Vec<Address> = Vec::new();
        for signer in self.signers.iter() {
            accounts.extend(signer.accounts().into_iter().filter(|acc| unique.insert(*acc)));
        }
        accounts.extend(
            self.backend
                .cheats()
                .impersonated_accounts()
                .into_iter()
                .filter(|acc| unique.insert(*acc)),
        );
        Ok(accounts.into_iter().collect())
    }

    /// Returns the number of most recent block.
    ///
    /// Handler for ETH RPC call: `eth_blockNumber`
    pub fn block_number(&self) -> Result<U256> {
        node_info!("eth_blockNumber");
        Ok(U256::from(self.backend.best_number()))
    }

    /// Returns balance of the given account.
    ///
    /// Handler for ETH RPC call: `eth_getBalance`
    pub async fn balance(&self, address: Address, block_number: Option<BlockId>) -> Result<U256> {
        node_info!("eth_getBalance");
        let block_request = self.block_request(block_number).await?;

        // check if the number predates the fork, if in fork mode
        if let BlockRequest::Number(number) = block_request
            && let Some(fork) = self.get_fork()
            && fork.predates_fork(number)
        {
            return Ok(fork.get_balance(address, number).await?);
        }

        self.backend.get_balance(address, Some(block_request)).await
    }

    /// Returns the ethereum account.
    ///
    /// Handler for ETH RPC call: `eth_getAccount`
    pub async fn get_account(
        &self,
        address: Address,
        block_number: Option<BlockId>,
    ) -> Result<Account> {
        node_info!("eth_getAccount");
        let block_request = self.block_request(block_number).await?;

        // check if the number predates the fork, if in fork mode
        if let BlockRequest::Number(number) = block_request
            && let Some(fork) = self.get_fork()
            && fork.predates_fork(number)
        {
            return Ok(fork.get_account(address, number).await?);
        }

        self.backend.get_account_at_block(address, Some(block_request)).await
    }

    /// Returns the account information including balance, nonce, code and storage
    ///
    /// Note: This isn't support by all providers
    pub async fn get_account_info(
        &self,
        address: Address,
        block_number: Option<BlockId>,
    ) -> Result<alloy_rpc_types::eth::AccountInfo> {
        node_info!("eth_getAccountInfo");

        if let Some(fork) = self.get_fork() {
            // check if the number predates the fork, if in fork mode
            if let BlockRequest::Number(number) = self.block_request(block_number).await?
                && fork.predates_fork(number)
            {
                // if this predates the fork we need to fetch balance, nonce, code individually
                // because the provider might not support this endpoint
                let balance = fork.get_balance(address, number).map_err(BlockchainError::from);
                let code = fork.get_code(address, number).map_err(BlockchainError::from);
                let nonce = self.get_transaction_count(address, Some(number.into()));
                let (balance, code, nonce) = try_join!(balance, code, nonce)?;

                return Ok(alloy_rpc_types::eth::AccountInfo { balance, nonce, code });
            }
        }

        let account = self.get_account(address, block_number);
        let code = self.get_code(address, block_number);
        let (account, code) = try_join!(account, code)?;
        Ok(alloy_rpc_types::eth::AccountInfo {
            balance: account.balance,
            nonce: account.nonce,
            code,
        })
    }
    /// Returns content of the storage at given address.
    ///
    /// Handler for ETH RPC call: `eth_getStorageAt`
    pub async fn storage_at(
        &self,
        address: Address,
        index: U256,
        block_number: Option<BlockId>,
    ) -> Result<B256> {
        node_info!("eth_getStorageAt");
        let block_request = self.block_request(block_number).await?;

        // check if the number predates the fork, if in fork mode
        if let BlockRequest::Number(number) = block_request
            && let Some(fork) = self.get_fork()
            && fork.predates_fork(number)
        {
            return Ok(B256::from(
                fork.storage_at(address, index, Some(BlockNumber::Number(number))).await?,
            ));
        }

        self.backend.storage_at(address, index, Some(block_request)).await
    }

    /// Returns block with given hash.
    ///
    /// Handler for ETH RPC call: `eth_getBlockByHash`
    pub async fn block_by_hash(&self, hash: B256) -> Result<Option<AnyRpcBlock>> {
        node_info!("eth_getBlockByHash");
        self.backend.block_by_hash(hash).await
    }

    /// Returns a _full_ block with given hash.
    ///
    /// Handler for ETH RPC call: `eth_getBlockByHash`
    pub async fn block_by_hash_full(&self, hash: B256) -> Result<Option<AnyRpcBlock>> {
        node_info!("eth_getBlockByHash");
        self.backend.block_by_hash_full(hash).await
    }

    /// Returns block with given number.
    ///
    /// Handler for ETH RPC call: `eth_getBlockByNumber`
    pub async fn block_by_number(&self, number: BlockNumber) -> Result<Option<AnyRpcBlock>> {
        node_info!("eth_getBlockByNumber");
        if number == BlockNumber::Pending {
            return Ok(Some(self.pending_block().await));
        }

        self.backend.block_by_number(number).await
    }

    /// Returns a _full_ block with given number
    ///
    /// Handler for ETH RPC call: `eth_getBlockByNumber`
    pub async fn block_by_number_full(&self, number: BlockNumber) -> Result<Option<AnyRpcBlock>> {
        node_info!("eth_getBlockByNumber");
        if number == BlockNumber::Pending {
            return Ok(self.pending_block_full().await);
        }
        self.backend.block_by_number_full(number).await
    }

    /// Returns the number of transactions sent from given address at given time (block number).
    ///
    /// Also checks the pending transactions if `block_number` is
    /// `BlockId::Number(BlockNumber::Pending)`
    ///
    /// Handler for ETH RPC call: `eth_getTransactionCount`
    pub async fn transaction_count(
        &self,
        address: Address,
        block_number: Option<BlockId>,
    ) -> Result<U256> {
        node_info!("eth_getTransactionCount");
        self.get_transaction_count(address, block_number).await.map(U256::from)
    }

    /// Returns the number of transactions in a block with given hash.
    ///
    /// Handler for ETH RPC call: `eth_getBlockTransactionCountByHash`
    pub async fn block_transaction_count_by_hash(&self, hash: B256) -> Result<Option<U256>> {
        node_info!("eth_getBlockTransactionCountByHash");
        let block = self.backend.block_by_hash(hash).await?;
        let txs = block.map(|b| match b.transactions() {
            BlockTransactions::Full(txs) => U256::from(txs.len()),
            BlockTransactions::Hashes(txs) => U256::from(txs.len()),
            BlockTransactions::Uncle => U256::from(0),
        });
        Ok(txs)
    }

    /// Returns the number of transactions in a block with given block number.
    ///
    /// Handler for ETH RPC call: `eth_getBlockTransactionCountByNumber`
    pub async fn block_transaction_count_by_number(
        &self,
        block_number: BlockNumber,
    ) -> Result<Option<U256>> {
        node_info!("eth_getBlockTransactionCountByNumber");
        let block_request = self.block_request(Some(block_number.into())).await?;
        if let BlockRequest::Pending(txs) = block_request {
            let block = self.backend.pending_block(txs).await;
            return Ok(Some(U256::from(block.transactions.len())));
        }
        let block = self.backend.block_by_number(block_number).await?;
        let txs = block.map(|b| match b.transactions() {
            BlockTransactions::Full(txs) => U256::from(txs.len()),
            BlockTransactions::Hashes(txs) => U256::from(txs.len()),
            BlockTransactions::Uncle => U256::from(0),
        });
        Ok(txs)
    }

    /// Returns the number of uncles in a block with given hash.
    ///
    /// Handler for ETH RPC call: `eth_getUncleCountByBlockHash`
    pub async fn block_uncles_count_by_hash(&self, hash: B256) -> Result<U256> {
        node_info!("eth_getUncleCountByBlockHash");
        let block =
            self.backend.block_by_hash(hash).await?.ok_or(BlockchainError::BlockNotFound)?;
        Ok(U256::from(block.uncles.len()))
    }

    /// Returns the number of uncles in a block with given block number.
    ///
    /// Handler for ETH RPC call: `eth_getUncleCountByBlockNumber`
    pub async fn block_uncles_count_by_number(&self, block_number: BlockNumber) -> Result<U256> {
        node_info!("eth_getUncleCountByBlockNumber");
        let block = self
            .backend
            .block_by_number(block_number)
            .await?
            .ok_or(BlockchainError::BlockNotFound)?;
        Ok(U256::from(block.uncles.len()))
    }

    /// Returns the code at given address at given time (block number).
    ///
    /// Handler for ETH RPC call: `eth_getCode`
    pub async fn get_code(&self, address: Address, block_number: Option<BlockId>) -> Result<Bytes> {
        node_info!("eth_getCode");
        let block_request = self.block_request(block_number).await?;
        // check if the number predates the fork, if in fork mode
        if let BlockRequest::Number(number) = block_request
            && let Some(fork) = self.get_fork()
            && fork.predates_fork(number)
        {
            return Ok(fork.get_code(address, number).await?);
        }
        self.backend.get_code(address, Some(block_request)).await
    }

    /// Returns the account and storage values of the specified account including the Merkle-proof.
    /// This call can be used to verify that the data you are pulling from is not tampered with.
    ///
    /// Handler for ETH RPC call: `eth_getProof`
    pub async fn get_proof(
        &self,
        address: Address,
        keys: Vec<B256>,
        block_number: Option<BlockId>,
    ) -> Result<EIP1186AccountProofResponse> {
        node_info!("eth_getProof");
        let block_request = self.block_request(block_number).await?;

        // If we're in forking mode, or still on the forked block (no blocks mined yet) then we can
        // delegate the call.
        if let BlockRequest::Number(number) = block_request
            && let Some(fork) = self.get_fork()
            && fork.predates_fork_inclusive(number)
        {
            return Ok(fork.get_proof(address, keys, Some(number.into())).await?);
        }

        let proof = self.backend.prove_account_at(address, keys, Some(block_request)).await?;
        Ok(proof)
    }

    /// Signs data via [EIP-712](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-712.md).
    ///
    /// Handler for ETH RPC call: `eth_signTypedData`
    pub async fn sign_typed_data(
        &self,
        _address: Address,
        _data: serde_json::Value,
    ) -> Result<String> {
        node_info!("eth_signTypedData");
        Err(BlockchainError::RpcUnimplemented)
    }

    /// Signs data via [EIP-712](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-712.md).
    ///
    /// Handler for ETH RPC call: `eth_signTypedData_v3`
    pub async fn sign_typed_data_v3(
        &self,
        _address: Address,
        _data: serde_json::Value,
    ) -> Result<String> {
        node_info!("eth_signTypedData_v3");
        Err(BlockchainError::RpcUnimplemented)
    }

    /// Signs data via [EIP-712](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-712.md), and includes full support of arrays and recursive data structures.
    ///
    /// Handler for ETH RPC call: `eth_signTypedData_v4`
    pub async fn sign_typed_data_v4(&self, address: Address, data: &TypedData) -> Result<String> {
        node_info!("eth_signTypedData_v4");
        let signer = self.get_signer(address).ok_or(BlockchainError::NoSignerAvailable)?;
        let signature = signer.sign_typed_data(address, data).await?;
        let signature = alloy_primitives::hex::encode(signature.as_bytes());
        Ok(format!("0x{signature}"))
    }

    /// The sign method calculates an Ethereum specific signature
    ///
    /// Handler for ETH RPC call: `eth_sign`
    pub async fn sign(&self, address: Address, content: impl AsRef<[u8]>) -> Result<String> {
        node_info!("eth_sign");
        let signer = self.get_signer(address).ok_or(BlockchainError::NoSignerAvailable)?;
        let signature =
            alloy_primitives::hex::encode(signer.sign(address, content.as_ref()).await?.as_bytes());
        Ok(format!("0x{signature}"))
    }

    /// Signs a transaction
    ///
    /// Handler for ETH RPC call: `eth_signTransaction`
    pub async fn sign_transaction(
        &self,
        mut request: WithOtherFields<TransactionRequest>,
    ) -> Result<String> {
        node_info!("eth_signTransaction");

        let from = request.from.map(Ok).unwrap_or_else(|| {
            self.accounts()?.first().copied().ok_or(BlockchainError::NoSignerAvailable)
        })?;

        let (nonce, _) = self.request_nonce(&request, from).await?;

        if request.gas.is_none() {
            // estimate if not provided
            if let Ok(gas) = self.estimate_gas(request.clone(), None, EvmOverrides::default()).await
            {
                request.gas = Some(gas.to());
            }
        }

        let request = self.build_typed_tx_request(request, nonce)?;

        let signed_transaction = self.sign_request(&from, request)?.encoded_2718();
        Ok(alloy_primitives::hex::encode_prefixed(signed_transaction))
    }

    /// Sends a transaction
    ///
    /// Handler for ETH RPC call: `eth_sendTransaction`
    pub async fn send_transaction(
        &self,
        mut request: WithOtherFields<TransactionRequest>,
    ) -> Result<TxHash> {
        node_info!("eth_sendTransaction");

        let from = request.from.map(Ok).unwrap_or_else(|| {
            self.accounts()?.first().copied().ok_or(BlockchainError::NoSignerAvailable)
        })?;
        let (nonce, on_chain_nonce) = self.request_nonce(&request, from).await?;

        if request.gas.is_none() {
            // estimate if not provided
            if let Ok(gas) = self.estimate_gas(request.clone(), None, EvmOverrides::default()).await
            {
                request.gas = Some(gas.to());
            }
        }

        let request = self.build_typed_tx_request(request, nonce)?;

        // if the sender is currently impersonated we need to "bypass" signing
        let pending_transaction = if self.is_impersonated(from) {
            let bypass_signature = self.impersonated_signature(&request);
            let transaction = sign::build_typed_transaction(request, bypass_signature)?;
            self.ensure_typed_transaction_supported(&transaction)?;
            trace!(target : "node", ?from, "eth_sendTransaction: impersonating");
            PendingTransaction::with_impersonated(transaction, from)
        } else {
            let transaction = self.sign_request(&from, request)?;
            self.ensure_typed_transaction_supported(&transaction)?;
            PendingTransaction::new(transaction)?
        };
        // pre-validate
        self.backend.validate_pool_transaction(&pending_transaction).await?;

        let requires = required_marker(nonce, on_chain_nonce, from);
        let provides = vec![to_marker(nonce, from)];
        debug_assert!(requires != provides);

        self.add_pending_transaction(pending_transaction, requires, provides)
    }

    /// Waits for a transaction to be included in a block and returns its receipt (no timeout).
    async fn await_transaction_inclusion(&self, hash: TxHash) -> Result<ReceiptResponse> {
        let mut stream = self.new_block_notifications();
        // Check if the transaction is already included before listening for new blocks.
        if let Some(receipt) = self.backend.transaction_receipt(hash).await? {
            return Ok(receipt);
        }
        while let Some(notification) = stream.next().await {
            if let Some(block) = self.backend.get_block_by_hash(notification.hash)
                && block.transactions.iter().any(|tx| tx.hash() == hash)
                && let Some(receipt) = self.backend.transaction_receipt(hash).await?
            {
                return Ok(receipt);
            }
        }

        Err(BlockchainError::Message("Failed to await transaction inclusion".to_string()))
    }

    /// Waits for a transaction to be included in a block and returns its receipt, with timeout.
    async fn check_transaction_inclusion(&self, hash: TxHash) -> Result<ReceiptResponse> {
        const TIMEOUT_DURATION: Duration = Duration::from_secs(30);
        tokio::time::timeout(TIMEOUT_DURATION, self.await_transaction_inclusion(hash))
            .await
            .unwrap_or_else(|_elapsed| {
                Err(BlockchainError::TransactionConfirmationTimeout {
                    hash,
                    duration: TIMEOUT_DURATION,
                })
            })
    }

    /// Sends a transaction and waits for receipt
    ///
    /// Handler for ETH RPC call: `eth_sendTransactionSync`
    pub async fn send_transaction_sync(
        &self,
        request: WithOtherFields<TransactionRequest>,
    ) -> Result<ReceiptResponse> {
        node_info!("eth_sendTransactionSync");
        let hash = self.send_transaction(request).await?;

        let receipt = self.check_transaction_inclusion(hash).await?;

        Ok(ReceiptResponse::from(receipt))
    }

    /// Sends signed transaction, returning its hash.
    ///
    /// Handler for ETH RPC call: `eth_sendRawTransaction`
    pub async fn send_raw_transaction(&self, tx: Bytes) -> Result<TxHash> {
        node_info!("eth_sendRawTransaction");
        let mut data = tx.as_ref();
        if data.is_empty() {
            return Err(BlockchainError::EmptyRawTransactionData);
        }

        let transaction = TypedTransaction::decode_2718(&mut data)
            .map_err(|_| BlockchainError::FailedToDecodeSignedTransaction)?;

        self.ensure_typed_transaction_supported(&transaction)?;

        let pending_transaction = PendingTransaction::new(transaction)?;

        // pre-validate
        self.backend.validate_pool_transaction(&pending_transaction).await?;

        let on_chain_nonce = self.backend.current_nonce(*pending_transaction.sender()).await?;
        let from = *pending_transaction.sender();
        let nonce = pending_transaction.transaction.nonce();
        let requires = required_marker(nonce, on_chain_nonce, from);

        let priority = self.transaction_priority(&pending_transaction.transaction);
        let pool_transaction = PoolTransaction {
            requires,
            provides: vec![to_marker(nonce, *pending_transaction.sender())],
            pending_transaction,
            priority,
        };

        let tx = self.pool.add_transaction(pool_transaction)?;
        trace!(target: "node", "Added transaction: [{:?}] sender={:?}", tx.hash(), from);
        Ok(*tx.hash())
    }

    /// Sends signed transaction, returning its receipt.
    ///
    /// Handler for ETH RPC call: `eth_sendRawTransactionSync`
    pub async fn send_raw_transaction_sync(&self, tx: Bytes) -> Result<ReceiptResponse> {
        node_info!("eth_sendRawTransactionSync");

        let hash = self.send_raw_transaction(tx).await?;
        let receipt = self.check_transaction_inclusion(hash).await?;

        Ok(ReceiptResponse::from(receipt))
    }

    /// Call contract, returning the output data.
    ///
    /// Handler for ETH RPC call: `eth_call`
    pub async fn call(
        &self,
        request: WithOtherFields<TransactionRequest>,
        block_number: Option<BlockId>,
        overrides: EvmOverrides,
    ) -> Result<Bytes> {
        node_info!("eth_call");
        let block_request = self.block_request(block_number).await?;
        // check if the number predates the fork, if in fork mode
        if let BlockRequest::Number(number) = block_request
            && let Some(fork) = self.get_fork()
            && fork.predates_fork(number)
        {
            if overrides.has_state() || overrides.has_block() {
                return Err(BlockchainError::EvmOverrideError(
                    "not available on past forked blocks".to_string(),
                ));
            }
            return Ok(fork.call(&request, Some(number.into())).await?);
        }

        let fees = FeeDetails::new(
            request.gas_price,
            request.max_fee_per_gas,
            request.max_priority_fee_per_gas,
            request.max_fee_per_blob_gas,
        )?
        .or_zero_fees();
        // this can be blocking for a bit, especially in forking mode
        // <https://github.com/foundry-rs/foundry/issues/6036>
        self.on_blocking_task(|this| async move {
            let (exit, out, gas, _) =
                this.backend.call(request, fees, Some(block_request), overrides).await?;
            trace!(target : "node", "Call status {:?}, gas {}", exit, gas);

            ensure_return_ok(exit, &out)
        })
        .await
    }

    pub async fn simulate_v1(
        &self,
        request: SimulatePayload,
        block_number: Option<BlockId>,
    ) -> Result<Vec<SimulatedBlock<AnyRpcBlock>>> {
        node_info!("eth_simulateV1");
        let block_request = self.block_request(block_number).await?;
        // check if the number predates the fork, if in fork mode
        if let BlockRequest::Number(number) = block_request
            && let Some(fork) = self.get_fork()
            && fork.predates_fork(number)
        {
            return Ok(fork.simulate_v1(&request, Some(number.into())).await?);
        }

        // this can be blocking for a bit, especially in forking mode
        // <https://github.com/foundry-rs/foundry/issues/6036>
        self.on_blocking_task(|this| async move {
            let simulated_blocks = this.backend.simulate(request, Some(block_request)).await?;
            trace!(target : "node", "Simulate status {:?}", simulated_blocks);

            Ok(simulated_blocks)
        })
        .await
    }

    /// This method creates an EIP2930 type accessList based on a given Transaction. The accessList
    /// contains all storage slots and addresses read and written by the transaction, except for the
    /// sender account and the precompiles.
    ///
    /// It returns list of addresses and storage keys used by the transaction, plus the gas
    /// consumed when the access list is added. That is, it gives you the list of addresses and
    /// storage keys that will be used by that transaction, plus the gas consumed if the access
    /// list is included. Like eth_estimateGas, this is an estimation; the list could change
    /// when the transaction is actually mined. Adding an accessList to your transaction does
    /// not necessary result in lower gas usage compared to a transaction without an access
    /// list.
    ///
    /// Handler for ETH RPC call: `eth_createAccessList`
    pub async fn create_access_list(
        &self,
        mut request: WithOtherFields<TransactionRequest>,
        block_number: Option<BlockId>,
    ) -> Result<AccessListResult> {
        node_info!("eth_createAccessList");
        let block_request = self.block_request(block_number).await?;
        // check if the number predates the fork, if in fork mode
        if let BlockRequest::Number(number) = block_request
            && let Some(fork) = self.get_fork()
            && fork.predates_fork(number)
        {
            return Ok(fork.create_access_list(&request, Some(number.into())).await?);
        }

        self.backend
            .with_database_at(Some(block_request), |state, block_env| {
                let (exit, out, _, access_list) = self.backend.build_access_list_with_state(
                    &state,
                    request.clone(),
                    FeeDetails::zero(),
                    block_env.clone(),
                )?;
                ensure_return_ok(exit, &out)?;

                // execute again but with access list set
                request.access_list = Some(access_list.clone());

                let (exit, out, gas_used, _) = self.backend.call_with_state(
                    &state,
                    request.clone(),
                    FeeDetails::zero(),
                    block_env,
                )?;
                ensure_return_ok(exit, &out)?;

                Ok(AccessListResult {
                    access_list: AccessList(access_list.0),
                    gas_used: U256::from(gas_used),
                    error: None,
                })
            })
            .await?
    }

    /// Estimate gas needed for execution of given contract.
    /// If no block parameter is given, it will use the pending block by default
    ///
    /// Handler for ETH RPC call: `eth_estimateGas`
    pub async fn estimate_gas(
        &self,
        request: WithOtherFields<TransactionRequest>,
        block_number: Option<BlockId>,
        overrides: EvmOverrides,
    ) -> Result<U256> {
        node_info!("eth_estimateGas");
        self.do_estimate_gas(
            request,
            block_number.or_else(|| Some(BlockNumber::Pending.into())),
            overrides,
        )
        .await
        .map(U256::from)
    }

    /// Handler for RPC call: `anvil_getBlobByHash`
    pub fn anvil_get_blob_by_versioned_hash(
        &self,
        hash: B256,
    ) -> Result<Option<alloy_consensus::Blob>> {
        node_info!("anvil_getBlobByHash");
        Ok(self.backend.get_blob_by_versioned_hash(hash)?)
    }

    /// Handler for RPC call: `anvil_getBlobsByTransactionHash`
    pub fn anvil_get_blob_by_tx_hash(&self, hash: B256) -> Result<Option<Vec<Blob>>> {
        node_info!("anvil_getBlobsByTransactionHash");
        Ok(self.backend.get_blob_by_tx_hash(hash)?)
    }

    /// Get transaction by its hash.
    ///
    /// This will check the storage for a matching transaction, if no transaction exists in storage
    /// this will also scan the mempool for a matching pending transaction
    ///
    /// Handler for ETH RPC call: `eth_getTransactionByHash`
    pub async fn transaction_by_hash(&self, hash: B256) -> Result<Option<AnyRpcTransaction>> {
        node_info!("eth_getTransactionByHash");
        let mut tx = self.pool.get_transaction(hash).map(|pending| {
            let from = *pending.sender();
            let tx = transaction_build(
                Some(*pending.hash()),
                pending.transaction,
                None,
                None,
                Some(self.backend.base_fee()),
            );

            let WithOtherFields { inner: mut tx, other } = tx.0;
            // we set the from field here explicitly to the set sender of the pending transaction,
            // in case the transaction is impersonated.
            tx.inner = Recovered::new_unchecked(tx.inner.into_inner(), from);

            AnyRpcTransaction(WithOtherFields { inner: tx, other })
        });
        if tx.is_none() {
            tx = self.backend.transaction_by_hash(hash).await?
        }

        Ok(tx)
    }

    /// Returns transaction at given block hash and index.
    ///
    /// Handler for ETH RPC call: `eth_getTransactionByBlockHashAndIndex`
    pub async fn transaction_by_block_hash_and_index(
        &self,
        hash: B256,
        index: Index,
    ) -> Result<Option<AnyRpcTransaction>> {
        node_info!("eth_getTransactionByBlockHashAndIndex");
        self.backend.transaction_by_block_hash_and_index(hash, index).await
    }

    /// Returns transaction by given block number and index.
    ///
    /// Handler for ETH RPC call: `eth_getTransactionByBlockNumberAndIndex`
    pub async fn transaction_by_block_number_and_index(
        &self,
        block: BlockNumber,
        idx: Index,
    ) -> Result<Option<AnyRpcTransaction>> {
        node_info!("eth_getTransactionByBlockNumberAndIndex");
        self.backend.transaction_by_block_number_and_index(block, idx).await
    }

    /// Returns transaction receipt by transaction hash.
    ///
    /// Handler for ETH RPC call: `eth_getTransactionReceipt`
    pub async fn transaction_receipt(&self, hash: B256) -> Result<Option<ReceiptResponse>> {
        node_info!("eth_getTransactionReceipt");
        self.backend.transaction_receipt(hash).await
    }

    /// Returns block receipts by block number.
    ///
    /// Handler for ETH RPC call: `eth_getBlockReceipts`
    pub async fn block_receipts(&self, number: BlockId) -> Result<Option<Vec<ReceiptResponse>>> {
        node_info!("eth_getBlockReceipts");
        self.backend.block_receipts(number).await
    }

    /// Returns an uncles at given block and index.
    ///
    /// Handler for ETH RPC call: `eth_getUncleByBlockHashAndIndex`
    pub async fn uncle_by_block_hash_and_index(
        &self,
        block_hash: B256,
        idx: Index,
    ) -> Result<Option<AnyRpcBlock>> {
        node_info!("eth_getUncleByBlockHashAndIndex");
        let number =
            self.backend.ensure_block_number(Some(BlockId::Hash(block_hash.into()))).await?;
        if let Some(fork) = self.get_fork()
            && fork.predates_fork_inclusive(number)
        {
            return Ok(fork.uncle_by_block_hash_and_index(block_hash, idx.into()).await?);
        }
        // It's impossible to have uncles outside of fork mode
        Ok(None)
    }

    /// Returns an uncles at given block and index.
    ///
    /// Handler for ETH RPC call: `eth_getUncleByBlockNumberAndIndex`
    pub async fn uncle_by_block_number_and_index(
        &self,
        block_number: BlockNumber,
        idx: Index,
    ) -> Result<Option<AnyRpcBlock>> {
        node_info!("eth_getUncleByBlockNumberAndIndex");
        let number = self.backend.ensure_block_number(Some(BlockId::Number(block_number))).await?;
        if let Some(fork) = self.get_fork()
            && fork.predates_fork_inclusive(number)
        {
            return Ok(fork.uncle_by_block_number_and_index(number, idx.into()).await?);
        }
        // It's impossible to have uncles outside of fork mode
        Ok(None)
    }

    /// Returns logs matching given filter object.
    ///
    /// Handler for ETH RPC call: `eth_getLogs`
    pub async fn logs(&self, filter: Filter) -> Result<Vec<Log>> {
        node_info!("eth_getLogs");
        self.backend.logs(filter).await
    }

    /// Returns the hash of the current block, the seedHash, and the boundary condition to be met.
    ///
    /// Handler for ETH RPC call: `eth_getWork`
    pub fn work(&self) -> Result<Work> {
        node_info!("eth_getWork");
        Err(BlockchainError::RpcUnimplemented)
    }

    /// Returns the sync status, always be fails.
    ///
    /// Handler for ETH RPC call: `eth_syncing`
    pub fn syncing(&self) -> Result<bool> {
        node_info!("eth_syncing");
        Ok(false)
    }

    /// Returns the current configuration of the chain.
    /// This is useful for finding out what precompiles and system contracts are available.
    ///
    /// Note: the activation timestamp is always 0 as the configuration is set at genesis.
    /// Note: the `fork_id` is always `0x00000000` as this node does not participate in any forking
    /// on the network.
    /// Note: the `next` and `last` fields are always `null` as this node does not participate in
    /// any forking on the network.
    ///
    /// Handler for ETH RPC call: `eth_config`
    pub fn config(&self) -> Result<EthConfig> {
        node_info!("eth_config");
        Ok(EthConfig {
            current: EthForkConfig {
                activation_time: 0,
                blob_schedule: self.backend.blob_params(),
                chain_id: self.backend.env().read().evm_env.cfg_env.chain_id,
                fork_id: Bytes::from_static(&[0; 4]),
                precompiles: self.backend.precompiles(),
                system_contracts: self.backend.system_contracts(),
            },
            next: None,
            last: None,
        })
    }

    /// Used for submitting a proof-of-work solution.
    ///
    /// Handler for ETH RPC call: `eth_submitWork`
    pub fn submit_work(&self, _: B64, _: B256, _: B256) -> Result<bool> {
        node_info!("eth_submitWork");
        Err(BlockchainError::RpcUnimplemented)
    }

    /// Used for submitting mining hashrate.
    ///
    /// Handler for ETH RPC call: `eth_submitHashrate`
    pub fn submit_hashrate(&self, _: U256, _: B256) -> Result<bool> {
        node_info!("eth_submitHashrate");
        Err(BlockchainError::RpcUnimplemented)
    }

    /// Introduced in EIP-1559 for getting information on the appropriate priority fee to use.
    ///
    /// Handler for ETH RPC call: `eth_feeHistory`
    pub async fn fee_history(
        &self,
        block_count: U256,
        newest_block: BlockNumber,
        reward_percentiles: Vec<f64>,
    ) -> Result<FeeHistory> {
        node_info!("eth_feeHistory");
        // max number of blocks in the requested range

        let current = self.backend.best_number();
        let slots_in_an_epoch = 32u64;

        let number = match newest_block {
            BlockNumber::Latest | BlockNumber::Pending => current,
            BlockNumber::Earliest => 0,
            BlockNumber::Number(n) => n,
            BlockNumber::Safe => current.saturating_sub(slots_in_an_epoch),
            BlockNumber::Finalized => current.saturating_sub(slots_in_an_epoch * 2),
        };

        // check if the number predates the fork, if in fork mode
        if let Some(fork) = self.get_fork() {
            // if we're still at the forked block we don't have any history and can't compute it
            // efficiently, instead we fetch it from the fork
            if fork.predates_fork_inclusive(number) {
                return fork
                    .fee_history(block_count.to(), BlockNumber::Number(number), &reward_percentiles)
                    .await
                    .map_err(BlockchainError::AlloyForkProvider);
            }
        }

        const MAX_BLOCK_COUNT: u64 = 1024u64;
        let block_count = block_count.to::<u64>().min(MAX_BLOCK_COUNT);

        // highest and lowest block num in the requested range
        let highest = number;
        let lowest = highest.saturating_sub(block_count.saturating_sub(1));

        // only support ranges that are in cache range
        if lowest < self.backend.best_number().saturating_sub(self.fee_history_limit) {
            return Err(FeeHistoryError::InvalidBlockRange.into());
        }

        let mut response = FeeHistory {
            oldest_block: lowest,
            base_fee_per_gas: Vec::new(),
            gas_used_ratio: Vec::new(),
            reward: Some(Default::default()),
            base_fee_per_blob_gas: Default::default(),
            blob_gas_used_ratio: Default::default(),
        };
        let mut rewards = Vec::new();

        {
            let fee_history = self.fee_history_cache.lock();

            // iter over the requested block range
            for n in lowest..=highest {
                // <https://eips.ethereum.org/EIPS/eip-1559>
                if let Some(block) = fee_history.get(&n) {
                    response.base_fee_per_gas.push(block.base_fee);
                    response.base_fee_per_blob_gas.push(block.base_fee_per_blob_gas.unwrap_or(0));
                    response.blob_gas_used_ratio.push(block.blob_gas_used_ratio);
                    response.gas_used_ratio.push(block.gas_used_ratio);

                    // requested percentiles
                    if !reward_percentiles.is_empty() {
                        let mut block_rewards = Vec::new();
                        let resolution_per_percentile: f64 = 2.0;
                        for p in &reward_percentiles {
                            let p = p.clamp(0.0, 100.0);
                            let index = ((p.round() / 2f64) * 2f64) * resolution_per_percentile;
                            let reward = block.rewards.get(index as usize).map_or(0, |r| *r);
                            block_rewards.push(reward);
                        }
                        rewards.push(block_rewards);
                    }
                }
            }
        }

        response.reward = Some(rewards);

        // add the next block's base fee to the response
        // The spec states that `base_fee_per_gas` "[..] includes the next block after the
        // newest of the returned range, because this value can be derived from the
        // newest block"
        response.base_fee_per_gas.push(self.backend.fees().base_fee() as u128);

        // Same goes for the `base_fee_per_blob_gas`:
        // > [..] includes the next block after the newest of the returned range, because this
        // > value can be derived from the newest block.
        response.base_fee_per_blob_gas.push(self.backend.fees().base_fee_per_blob_gas());

        Ok(response)
    }

    /// Introduced in EIP-1159, a Geth-specific and simplified priority fee oracle.
    /// Leverages the already existing fee history cache.
    ///
    /// Returns a suggestion for a gas tip cap for dynamic fee transactions.
    ///
    /// Handler for ETH RPC call: `eth_maxPriorityFeePerGas`
    pub fn max_priority_fee_per_gas(&self) -> Result<U256> {
        node_info!("eth_maxPriorityFeePerGas");
        Ok(U256::from(self.lowest_suggestion_tip()))
    }

    /// Returns the suggested fee cap.
    ///
    /// Returns at least [MIN_SUGGESTED_PRIORITY_FEE]
    fn lowest_suggestion_tip(&self) -> u128 {
        let block_number = self.backend.best_number();
        let latest_cached_block = self.fee_history_cache.lock().get(&block_number).cloned();

        match latest_cached_block {
            Some(block) => block.rewards.iter().copied().min(),
            None => self.fee_history_cache.lock().values().flat_map(|b| b.rewards.clone()).min(),
        }
        .map(|fee| fee.max(MIN_SUGGESTED_PRIORITY_FEE))
        .unwrap_or(MIN_SUGGESTED_PRIORITY_FEE)
    }

    /// Creates a filter object, based on filter options, to notify when the state changes (logs).
    ///
    /// Handler for ETH RPC call: `eth_newFilter`
    pub async fn new_filter(&self, filter: Filter) -> Result<String> {
        node_info!("eth_newFilter");
        // all logs that are already available that match the filter if the filter's block range is
        // in the past
        let historic = if filter.block_option.get_from_block().is_some() {
            self.backend.logs(filter.clone()).await?
        } else {
            vec![]
        };
        let filter = EthFilter::Logs(Box::new(LogsFilter {
            blocks: self.new_block_notifications(),
            storage: self.storage_info(),
            filter: FilteredParams::new(Some(filter)),
            historic: Some(historic),
        }));
        Ok(self.filters.add_filter(filter).await)
    }

    /// Creates a filter in the node, to notify when a new block arrives.
    ///
    /// Handler for ETH RPC call: `eth_newBlockFilter`
    pub async fn new_block_filter(&self) -> Result<String> {
        node_info!("eth_newBlockFilter");
        let filter = EthFilter::Blocks(self.new_block_notifications());
        Ok(self.filters.add_filter(filter).await)
    }

    /// Creates a filter in the node, to notify when new pending transactions arrive.
    ///
    /// Handler for ETH RPC call: `eth_newPendingTransactionFilter`
    pub async fn new_pending_transaction_filter(&self) -> Result<String> {
        node_info!("eth_newPendingTransactionFilter");
        let filter = EthFilter::PendingTransactions(self.new_ready_transactions());
        Ok(self.filters.add_filter(filter).await)
    }

    /// Polling method for a filter, which returns an array of logs which occurred since last poll.
    ///
    /// Handler for ETH RPC call: `eth_getFilterChanges`
    pub async fn get_filter_changes(&self, id: &str) -> ResponseResult {
        node_info!("eth_getFilterChanges");
        self.filters.get_filter_changes(id).await
    }

    /// Returns an array of all logs matching filter with given id.
    ///
    /// Handler for ETH RPC call: `eth_getFilterLogs`
    pub async fn get_filter_logs(&self, id: &str) -> Result<Vec<Log>> {
        node_info!("eth_getFilterLogs");
        if let Some(filter) = self.filters.get_log_filter(id).await {
            self.backend.logs(filter).await
        } else {
            Ok(Vec::new())
        }
    }

    /// Handler for ETH RPC call: `eth_uninstallFilter`
    pub async fn uninstall_filter(&self, id: &str) -> Result<bool> {
        node_info!("eth_uninstallFilter");
        Ok(self.filters.uninstall_filter(id).await.is_some())
    }

    /// Returns EIP-2718 encoded raw transaction
    ///
    /// Handler for RPC call: `debug_getRawTransaction`
    pub async fn raw_transaction(&self, hash: B256) -> Result<Option<Bytes>> {
        node_info!("debug_getRawTransaction");
        self.inner_raw_transaction(hash).await
    }

    /// Returns EIP-2718 encoded raw transaction by block hash and index
    ///
    /// Handler for RPC call: `eth_getRawTransactionByBlockHashAndIndex`
    pub async fn raw_transaction_by_block_hash_and_index(
        &self,
        block_hash: B256,
        index: Index,
    ) -> Result<Option<Bytes>> {
        node_info!("eth_getRawTransactionByBlockHashAndIndex");
        match self.backend.transaction_by_block_hash_and_index(block_hash, index).await? {
            Some(tx) => self.inner_raw_transaction(tx.tx_hash()).await,
            None => Ok(None),
        }
    }

    /// Returns EIP-2718 encoded raw transaction by block number and index
    ///
    /// Handler for RPC call: `eth_getRawTransactionByBlockNumberAndIndex`
    pub async fn raw_transaction_by_block_number_and_index(
        &self,
        block_number: BlockNumber,
        index: Index,
    ) -> Result<Option<Bytes>> {
        node_info!("eth_getRawTransactionByBlockNumberAndIndex");
        match self.backend.transaction_by_block_number_and_index(block_number, index).await? {
            Some(tx) => self.inner_raw_transaction(tx.tx_hash()).await,
            None => Ok(None),
        }
    }

    /// Returns traces for the transaction hash for geth's tracing endpoint
    ///
    /// Handler for RPC call: `debug_traceTransaction`
    pub async fn debug_trace_transaction(
        &self,
        tx_hash: B256,
        opts: GethDebugTracingOptions,
    ) -> Result<GethTrace> {
        node_info!("debug_traceTransaction");
        self.backend.debug_trace_transaction(tx_hash, opts).await
    }

    /// Returns traces for the transaction for geth's tracing endpoint
    ///
    /// Handler for RPC call: `debug_traceCall`
    pub async fn debug_trace_call(
        &self,
        request: WithOtherFields<TransactionRequest>,
        block_number: Option<BlockId>,
        opts: GethDebugTracingCallOptions,
    ) -> Result<GethTrace> {
        node_info!("debug_traceCall");
        let block_request = self.block_request(block_number).await?;
        let fees = FeeDetails::new(
            request.gas_price,
            request.max_fee_per_gas,
            request.max_priority_fee_per_gas,
            request.max_fee_per_blob_gas,
        )?
        .or_zero_fees();

        let result: std::result::Result<GethTrace, BlockchainError> =
            self.backend.call_with_tracing(request, fees, Some(block_request), opts).await;
        result
    }

    /// Returns code by its hash
    ///
    /// Handler for RPC call: `debug_codeByHash`
    pub async fn debug_code_by_hash(
        &self,
        hash: B256,
        block_id: Option<BlockId>,
    ) -> Result<Option<Bytes>> {
        node_info!("debug_codeByHash");
        self.backend.debug_code_by_hash(hash, block_id).await
    }

    /// Returns traces for the transaction hash via parity's tracing endpoint
    ///
    /// Handler for RPC call: `trace_transaction`
    pub async fn trace_transaction(&self, tx_hash: B256) -> Result<Vec<LocalizedTransactionTrace>> {
        node_info!("trace_transaction");
        self.backend.trace_transaction(tx_hash).await
    }

    /// Returns traces for the transaction hash via parity's tracing endpoint
    ///
    /// Handler for RPC call: `trace_block`
    pub async fn trace_block(&self, block: BlockNumber) -> Result<Vec<LocalizedTransactionTrace>> {
        node_info!("trace_block");
        self.backend.trace_block(block).await
    }

    /// Returns filtered traces over blocks
    ///
    /// Handler for RPC call: `trace_filter`
    pub async fn trace_filter(
        &self,
        filter: TraceFilter,
    ) -> Result<Vec<LocalizedTransactionTrace>> {
        node_info!("trace_filter");
        self.backend.trace_filter(filter).await
    }
}

// == impl EthApi anvil endpoints ==

impl EthApi {
    /// Send transactions impersonating specific account and contract addresses.
    ///
    /// Handler for ETH RPC call: `anvil_impersonateAccount`
    pub async fn anvil_impersonate_account(&self, address: Address) -> Result<()> {
        node_info!("anvil_impersonateAccount");
        self.backend.impersonate(address);
        Ok(())
    }

    /// Stops impersonating an account if previously set with `anvil_impersonateAccount`.
    ///
    /// Handler for ETH RPC call: `anvil_stopImpersonatingAccount`
    pub async fn anvil_stop_impersonating_account(&self, address: Address) -> Result<()> {
        node_info!("anvil_stopImpersonatingAccount");
        self.backend.stop_impersonating(address);
        Ok(())
    }

    /// If set to true will make every account impersonated
    ///
    /// Handler for ETH RPC call: `anvil_autoImpersonateAccount`
    pub async fn anvil_auto_impersonate_account(&self, enabled: bool) -> Result<()> {
        node_info!("anvil_autoImpersonateAccount");
        self.backend.auto_impersonate_account(enabled);
        Ok(())
    }

    /// Registers a new address and signature pair to impersonate.
    pub async fn anvil_impersonate_signature(
        &self,
        signature: Bytes,
        address: Address,
    ) -> Result<()> {
        node_info!("anvil_impersonateSignature");
        self.backend.impersonate_signature(signature, address).await
    }

    /// Returns true if auto mining is enabled, and false.
    ///
    /// Handler for ETH RPC call: `anvil_getAutomine`
    pub fn anvil_get_auto_mine(&self) -> Result<bool> {
        node_info!("anvil_getAutomine");
        Ok(self.miner.is_auto_mine())
    }

    /// Returns the value of mining interval, if set.
    ///
    /// Handler for ETH RPC call: `anvil_getIntervalMining`.
    pub fn anvil_get_interval_mining(&self) -> Result<Option<u64>> {
        node_info!("anvil_getIntervalMining");
        Ok(self.miner.get_interval())
    }

    /// Enables or disables, based on the single boolean argument, the automatic mining of new
    /// blocks with each new transaction submitted to the network.
    ///
    /// Handler for ETH RPC call: `evm_setAutomine`
    pub async fn anvil_set_auto_mine(&self, enable_automine: bool) -> Result<()> {
        node_info!("evm_setAutomine");
        if self.miner.is_auto_mine() {
            if enable_automine {
                return Ok(());
            }
            self.miner.set_mining_mode(MiningMode::None);
        } else if enable_automine {
            let listener = self.pool.add_ready_listener();
            let mode = MiningMode::instant(1_000, listener);
            self.miner.set_mining_mode(mode);
        }
        Ok(())
    }

    /// Mines a series of blocks.
    ///
    /// Handler for ETH RPC call: `anvil_mine`
    pub async fn anvil_mine(&self, num_blocks: Option<U256>, interval: Option<U256>) -> Result<()> {
        node_info!("anvil_mine");
        let interval = interval.map(|i| i.to::<u64>());
        let blocks = num_blocks.unwrap_or(U256::from(1));
        if blocks.is_zero() {
            return Ok(());
        }

        self.on_blocking_task(|this| async move {
            // mine all the blocks
            for _ in 0..blocks.to::<u64>() {
                // If we have an interval, jump forwards in time to the "next" timestamp
                if let Some(interval) = interval {
                    this.backend.time().increase_time(interval);
                }
                this.mine_one().await;
            }
            Ok(())
        })
        .await?;

        Ok(())
    }

    /// Sets the mining behavior to interval with the given interval (seconds)
    ///
    /// Handler for ETH RPC call: `evm_setIntervalMining`
    pub fn anvil_set_interval_mining(&self, secs: u64) -> Result<()> {
        node_info!("evm_setIntervalMining");
        let mining_mode = if secs == 0 {
            MiningMode::None
        } else {
            let block_time = Duration::from_secs(secs);

            // This ensures that memory limits are stricter in interval-mine mode
            self.backend.update_interval_mine_block_time(block_time);

            MiningMode::FixedBlockTime(FixedBlockTimeMiner::new(block_time))
        };
        self.miner.set_mining_mode(mining_mode);
        Ok(())
    }

    /// Removes transactions from the pool
    ///
    /// Handler for RPC call: `anvil_dropTransaction`
    pub async fn anvil_drop_transaction(&self, tx_hash: B256) -> Result<Option<B256>> {
        node_info!("anvil_dropTransaction");
        Ok(self.pool.drop_transaction(tx_hash).map(|tx| tx.hash()))
    }

    /// Removes all transactions from the pool
    ///
    /// Handler for RPC call: `anvil_dropAllTransactions`
    pub async fn anvil_drop_all_transactions(&self) -> Result<()> {
        node_info!("anvil_dropAllTransactions");
        self.pool.clear();
        Ok(())
    }

    /// Reset the fork to a fresh forked state, and optionally update the fork config.
    ///
    /// If `forking` is `None` then this will disable forking entirely.
    ///
    /// Handler for RPC call: `anvil_reset`
    pub async fn anvil_reset(&self, forking: Option<Forking>) -> Result<()> {
        self.reset_instance_id();
        node_info!("anvil_reset");
        if let Some(forking) = forking {
            // if we're resetting the fork we need to reset the instance id
            self.backend.reset_fork(forking).await
        } else {
            // Reset to a fresh in-memory state

            self.backend.reset_to_in_mem().await
        }
    }

    pub async fn anvil_set_chain_id(&self, chain_id: u64) -> Result<()> {
        node_info!("anvil_setChainId");
        self.backend.set_chain_id(chain_id);
        Ok(())
    }

    /// Modifies the balance of an account.
    ///
    /// Handler for RPC call: `anvil_setBalance`
    pub async fn anvil_set_balance(&self, address: Address, balance: U256) -> Result<()> {
        node_info!("anvil_setBalance");
        self.backend.set_balance(address, balance).await?;
        Ok(())
    }

    /// Increases the balance of an account.
    ///
    /// Handler for RPC call: `anvil_addBalance`
    pub async fn anvil_add_balance(&self, address: Address, balance: U256) -> Result<()> {
        node_info!("anvil_addBalance");
        let current_balance = self.backend.get_balance(address, None).await?;
        self.backend.set_balance(address, current_balance + balance).await?;
        Ok(())
    }

    /// Helper function to find the storage slot for an ERC20 function call by testing slots
    /// from an access list until one produces the expected result.
    ///
    /// Rather than trying to reverse-engineer the storage layout, this function uses a
    /// "trial and error" approach: try overriding each slot that the function accesses,
    /// and see which one actually affects the function's return value.
    ///
    /// ## Parameters
    /// - `token_address`: The ERC20 token contract address
    /// - `calldata`: The encoded function call (e.g., `balanceOf(user)` or `allowance(owner,
    ///   spender)`)
    /// - `expected_value`: The value we want to set (balance or allowance amount)
    ///
    /// ## Returns
    /// The storage slot (B256) that contains the target ERC20 data, or an error if no slot is
    /// found.
    async fn find_erc20_storage_slot(
        &self,
        token_address: Address,
        calldata: Bytes,
        expected_value: U256,
    ) -> Result<B256> {
        let tx = TransactionRequest::default().with_to(token_address).with_input(calldata.clone());

        // first collect all the slots that are used by the function call
        let access_list_result =
            self.create_access_list(WithOtherFields::new(tx.clone()), None).await?;
        let access_list = access_list_result.access_list;

        // iterate over all the accessed slots and try to find the one that contains the
        // target value by overriding the slot and checking the function call result
        for item in access_list.0 {
            if item.address != token_address {
                continue;
            };
            for slot in &item.storage_keys {
                let account_override = AccountOverride::default().with_state_diff(std::iter::once(
                    (*slot, B256::from(expected_value.to_be_bytes())),
                ));

                let state_override = StateOverridesBuilder::default()
                    .append(token_address, account_override)
                    .build();

                let evm_override = EvmOverrides::state(Some(state_override));

                let Ok(result) =
                    self.call(WithOtherFields::new(tx.clone()), None, evm_override).await
                else {
                    // overriding this slot failed
                    continue;
                };

                let Ok(result_value) = U256::abi_decode(&result) else {
                    // response returned something other than a U256
                    continue;
                };

                if result_value == expected_value {
                    return Ok(*slot);
                }
            }
        }

        Err(BlockchainError::Message("Unable to find storage slot".to_string()))
    }

    /// Deals ERC20 tokens to a address
    ///
    /// Handler for RPC call: `anvil_dealERC20`
    pub async fn anvil_deal_erc20(
        &self,
        address: Address,
        token_address: Address,
        balance: U256,
    ) -> Result<()> {
        node_info!("anvil_dealERC20");

        sol! {
            #[sol(rpc)]
            contract IERC20 {
                function balanceOf(address target) external view returns (uint256);
            }
        }

        let calldata = IERC20::balanceOfCall { target: address }.abi_encode().into();

        // Find the storage slot that contains the balance
        let slot =
            self.find_erc20_storage_slot(token_address, calldata, balance).await.map_err(|_| {
                BlockchainError::Message("Unable to set ERC20 balance, no slot found".to_string())
            })?;

        // Set the storage slot to the desired balance
        self.anvil_set_storage_at(
            token_address,
            U256::from_be_bytes(slot.0),
            B256::from(balance.to_be_bytes()),
        )
        .await?;

        Ok(())
    }

    /// Sets the ERC20 allowance for a spender
    ///
    /// Handler for RPC call: `anvil_set_erc20_allowance`
    pub async fn anvil_set_erc20_allowance(
        &self,
        owner: Address,
        spender: Address,
        token_address: Address,
        amount: U256,
    ) -> Result<()> {
        node_info!("anvil_setERC20Allowance");

        sol! {
            #[sol(rpc)]
            contract IERC20 {
                function allowance(address owner, address spender) external view returns (uint256);
            }
        }

        let calldata = IERC20::allowanceCall { owner, spender }.abi_encode().into();

        // Find the storage slot that contains the allowance
        let slot =
            self.find_erc20_storage_slot(token_address, calldata, amount).await.map_err(|_| {
                BlockchainError::Message("Unable to set ERC20 allowance, no slot found".to_string())
            })?;

        // Set the storage slot to the desired allowance
        self.anvil_set_storage_at(
            token_address,
            U256::from_be_bytes(slot.0),
            B256::from(amount.to_be_bytes()),
        )
        .await?;

        Ok(())
    }

    /// Sets the code of a contract.
    ///
    /// Handler for RPC call: `anvil_setCode`
    pub async fn anvil_set_code(&self, address: Address, code: Bytes) -> Result<()> {
        node_info!("anvil_setCode");
        self.backend.set_code(address, code).await?;
        Ok(())
    }

    /// Sets the nonce of an address.
    ///
    /// Handler for RPC call: `anvil_setNonce`
    pub async fn anvil_set_nonce(&self, address: Address, nonce: U256) -> Result<()> {
        node_info!("anvil_setNonce");
        self.backend.set_nonce(address, nonce).await?;
        Ok(())
    }

    /// Writes a single slot of the account's storage.
    ///
    /// Handler for RPC call: `anvil_setStorageAt`
    pub async fn anvil_set_storage_at(
        &self,
        address: Address,
        slot: U256,
        val: B256,
    ) -> Result<bool> {
        node_info!("anvil_setStorageAt");
        self.backend.set_storage_at(address, slot, val).await?;
        Ok(true)
    }

    /// Enable or disable logging.
    ///
    /// Handler for RPC call: `anvil_setLoggingEnabled`
    pub async fn anvil_set_logging(&self, enable: bool) -> Result<()> {
        node_info!("anvil_setLoggingEnabled");
        self.logger.set_enabled(enable);
        Ok(())
    }

    /// Set the minimum gas price for the node.
    ///
    /// Handler for RPC call: `anvil_setMinGasPrice`
    pub async fn anvil_set_min_gas_price(&self, gas: U256) -> Result<()> {
        node_info!("anvil_setMinGasPrice");
        if self.backend.is_eip1559() {
            return Err(RpcError::invalid_params(
                "anvil_setMinGasPrice is not supported when EIP-1559 is active",
            )
            .into());
        }
        self.backend.set_gas_price(gas.to());
        Ok(())
    }

    /// Sets the base fee of the next block.
    ///
    /// Handler for RPC call: `anvil_setNextBlockBaseFeePerGas`
    pub async fn anvil_set_next_block_base_fee_per_gas(&self, basefee: U256) -> Result<()> {
        node_info!("anvil_setNextBlockBaseFeePerGas");
        if !self.backend.is_eip1559() {
            return Err(RpcError::invalid_params(
                "anvil_setNextBlockBaseFeePerGas is only supported when EIP-1559 is active",
            )
            .into());
        }
        self.backend.set_base_fee(basefee.to());
        Ok(())
    }

    /// Sets the coinbase address.
    ///
    /// Handler for RPC call: `anvil_setCoinbase`
    pub async fn anvil_set_coinbase(&self, address: Address) -> Result<()> {
        node_info!("anvil_setCoinbase");
        self.backend.set_coinbase(address);
        Ok(())
    }

    /// Create a buffer that represents all state on the chain, which can be loaded to separate
    /// process by calling `anvil_loadState`
    ///
    /// Handler for RPC call: `anvil_dumpState`
    pub async fn anvil_dump_state(
        &self,
        preserve_historical_states: Option<bool>,
    ) -> Result<Bytes> {
        node_info!("anvil_dumpState");
        self.backend.dump_state(preserve_historical_states.unwrap_or(false)).await
    }

    /// Returns the current state
    pub async fn serialized_state(
        &self,
        preserve_historical_states: bool,
    ) -> Result<SerializableState> {
        self.backend.serialized_state(preserve_historical_states).await
    }

    /// Append chain state buffer to current chain. Will overwrite any conflicting addresses or
    /// storage.
    ///
    /// Handler for RPC call: `anvil_loadState`
    pub async fn anvil_load_state(&self, buf: Bytes) -> Result<bool> {
        node_info!("anvil_loadState");
        self.backend.load_state_bytes(buf).await
    }

    /// Retrieves the Anvil node configuration params.
    ///
    /// Handler for RPC call: `anvil_nodeInfo`
    pub async fn anvil_node_info(&self) -> Result<NodeInfo> {
        node_info!("anvil_nodeInfo");

        let env = self.backend.env().read();
        let fork_config = self.backend.get_fork();
        let tx_order = self.transaction_order.read();
        let hard_fork: &str = env.evm_env.cfg_env.spec.into();

        Ok(NodeInfo {
            current_block_number: self.backend.best_number(),
            current_block_timestamp: env.evm_env.block_env.timestamp.saturating_to(),
            current_block_hash: self.backend.best_hash(),
            hard_fork: hard_fork.to_string(),
            transaction_order: match *tx_order {
                TransactionOrder::Fifo => "fifo".to_string(),
                TransactionOrder::Fees => "fees".to_string(),
            },
            environment: NodeEnvironment {
                base_fee: self.backend.base_fee() as u128,
                chain_id: self.backend.chain_id().to::<u64>(),
                gas_limit: self.backend.gas_limit(),
                gas_price: self.gas_price(),
            },
            fork_config: fork_config
                .map(|fork| {
                    let config = fork.config.read();

                    NodeForkConfig {
                        fork_url: Some(config.eth_rpc_url.clone()),
                        fork_block_number: Some(config.block_number),
                        fork_retry_backoff: Some(config.backoff.as_millis()),
                    }
                })
                .unwrap_or_default(),
        })
    }

    /// Retrieves metadata about the Anvil instance.
    ///
    /// Handler for RPC call: `anvil_metadata`
    pub async fn anvil_metadata(&self) -> Result<Metadata> {
        node_info!("anvil_metadata");
        let fork_config = self.backend.get_fork();

        Ok(Metadata {
            client_version: CLIENT_VERSION.to_string(),
            chain_id: self.backend.chain_id().to::<u64>(),
            latest_block_hash: self.backend.best_hash(),
            latest_block_number: self.backend.best_number(),
            instance_id: *self.instance_id.read(),
            forked_network: fork_config.map(|cfg| ForkedNetwork {
                chain_id: cfg.chain_id(),
                fork_block_number: cfg.block_number(),
                fork_block_hash: cfg.block_hash(),
            }),
            snapshots: self.backend.list_state_snapshots(),
        })
    }

    pub async fn anvil_remove_pool_transactions(&self, address: Address) -> Result<()> {
        node_info!("anvil_removePoolTransactions");
        self.pool.remove_transactions_by_address(address);
        Ok(())
    }

    /// Reorg the chain to a specific depth and mine new blocks back to the canonical height.
    ///
    /// e.g depth = 3
    ///     A  -> B  -> C  -> D  -> E
    ///     A  -> B  -> C' -> D' -> E'
    ///
    /// Depth specifies the height to reorg the chain back to. Depth must not exceed the current
    /// chain height, i.e. can't reorg past the genesis block.
    ///
    /// Optionally supply a list of transaction and block pairs that will populate the reorged
    /// blocks. The maximum block number of the pairs must not exceed the specified depth.
    ///
    /// Handler for RPC call: `anvil_reorg`
    pub async fn anvil_reorg(&self, options: ReorgOptions) -> Result<()> {
        node_info!("anvil_reorg");
        let depth = options.depth;
        let tx_block_pairs = options.tx_block_pairs;

        // Check reorg depth doesn't exceed current chain height
        let current_height = self.backend.best_number();
        let common_height = current_height.checked_sub(depth).ok_or(BlockchainError::RpcError(
            RpcError::invalid_params(format!(
                "Reorg depth must not exceed current chain height: current height {current_height}, depth {depth}"
            )),
        ))?;

        // Get the common ancestor block
        let common_block =
            self.backend.get_block(common_height).ok_or(BlockchainError::BlockNotFound)?;

        // Convert the transaction requests to pool transactions if they exist, otherwise use empty
        // hashmap
        let block_pool_txs = if tx_block_pairs.is_empty() {
            HashMap::default()
        } else {
            let mut pairs = tx_block_pairs;

            // Check the maximum block supplied number will not exceed the reorged chain height
            if let Some((_, num)) = pairs.iter().find(|(_, num)| *num >= depth) {
                return Err(BlockchainError::RpcError(RpcError::invalid_params(format!(
                    "Block number for reorg tx will exceed the reorged chain height. Block number {num} must not exceed (depth-1) {}",
                    depth - 1
                ))));
            }

            // Sort by block number to make it easier to manage new nonces
            pairs.sort_by_key(|a| a.1);

            // Manage nonces for each signer
            // address -> cumulative nonce
            let mut nonces: HashMap<Address, u64> = HashMap::default();

            let mut txs: HashMap<u64, Vec<Arc<PoolTransaction>>> = HashMap::default();
            for pair in pairs {
                let (tx_data, block_index) = pair;

                let pending = match tx_data {
                    TransactionData::Raw(bytes) => {
                        let mut data = bytes.as_ref();
                        let decoded = TypedTransaction::decode_2718(&mut data)
                            .map_err(|_| BlockchainError::FailedToDecodeSignedTransaction)?;
                        PendingTransaction::new(decoded)?
                    }

                    TransactionData::JSON(req) => {
                        let mut tx_req = WithOtherFields::new(req);
                        let from = tx_req.from.map(Ok).unwrap_or_else(|| {
                            self.accounts()?
                                .first()
                                .copied()
                                .ok_or(BlockchainError::NoSignerAvailable)
                        })?;

                        // Get the nonce at the common block
                        let curr_nonce = nonces.entry(from).or_insert(
                            self.get_transaction_count(
                                from,
                                Some(common_block.header.number.into()),
                            )
                            .await?,
                        );

                        // Estimate gas
                        if tx_req.gas.is_none()
                            && let Ok(gas) = self
                                .estimate_gas(tx_req.clone(), None, EvmOverrides::default())
                                .await
                        {
                            tx_req.gas = Some(gas.to());
                        }

                        // Build typed transaction request
                        let typed = self.build_typed_tx_request(tx_req, *curr_nonce)?;

                        // Increment nonce
                        *curr_nonce += 1;

                        // Handle signer and convert to pending transaction
                        if self.is_impersonated(from) {
                            let bypass_signature = self.impersonated_signature(&typed);
                            let transaction =
                                sign::build_typed_transaction(typed, bypass_signature)?;
                            self.ensure_typed_transaction_supported(&transaction)?;
                            PendingTransaction::with_impersonated(transaction, from)
                        } else {
                            let transaction = self.sign_request(&from, typed)?;
                            self.ensure_typed_transaction_supported(&transaction)?;
                            PendingTransaction::new(transaction)?
                        }
                    }
                };

                let pooled = PoolTransaction::new(pending);
                txs.entry(block_index).or_default().push(Arc::new(pooled));
            }

            txs
        };

        self.backend.reorg(depth, block_pool_txs, common_block).await?;
        Ok(())
    }

    /// Rollback the chain to a specific depth.
    ///
    /// e.g depth = 3
    ///     A  -> B  -> C  -> D  -> E
    ///     A  -> B
    ///
    /// Depth specifies the height to rollback the chain back to. Depth must not exceed the current
    /// chain height, i.e. can't rollback past the genesis block.
    ///
    /// Handler for RPC call: `anvil_rollback`
    pub async fn anvil_rollback(&self, depth: Option<u64>) -> Result<()> {
        node_info!("anvil_rollback");
        let depth = depth.unwrap_or(1);

        // Check reorg depth doesn't exceed current chain height
        let current_height = self.backend.best_number();
        let common_height = current_height.checked_sub(depth).ok_or(BlockchainError::RpcError(
            RpcError::invalid_params(format!(
                "Rollback depth must not exceed current chain height: current height {current_height}, depth {depth}"
            )),
        ))?;

        // Get the common ancestor block
        let common_block =
            self.backend.get_block(common_height).ok_or(BlockchainError::BlockNotFound)?;

        self.backend.rollback(common_block).await?;
        Ok(())
    }

    /// Snapshot the state of the blockchain at the current block.
    ///
    /// Handler for RPC call: `evm_snapshot`
    pub async fn evm_snapshot(&self) -> Result<U256> {
        node_info!("evm_snapshot");
        Ok(self.backend.create_state_snapshot().await)
    }

    /// Revert the state of the blockchain to a previous snapshot.
    /// Takes a single parameter, which is the snapshot id to revert to.
    ///
    /// Handler for RPC call: `evm_revert`
    pub async fn evm_revert(&self, id: U256) -> Result<bool> {
        node_info!("evm_revert");
        self.backend.revert_state_snapshot(id).await
    }

    /// Jump forward in time by the given amount of time, in seconds.
    ///
    /// Handler for RPC call: `evm_increaseTime`
    pub async fn evm_increase_time(&self, seconds: U256) -> Result<i64> {
        node_info!("evm_increaseTime");
        Ok(self.backend.time().increase_time(seconds.try_into().unwrap_or(u64::MAX)) as i64)
    }

    /// Similar to `evm_increaseTime` but takes the exact timestamp that you want in the next block
    ///
    /// Handler for RPC call: `evm_setNextBlockTimestamp`
    pub fn evm_set_next_block_timestamp(&self, seconds: u64) -> Result<()> {
        node_info!("evm_setNextBlockTimestamp");
        self.backend.time().set_next_block_timestamp(seconds)
    }

    /// Sets the specific timestamp and returns the number of seconds between the given timestamp
    /// and the current time.
    ///
    /// Handler for RPC call: `evm_setTime`
    pub fn evm_set_time(&self, timestamp: u64) -> Result<u64> {
        node_info!("evm_setTime");
        let now = self.backend.time().current_call_timestamp();
        self.backend.time().reset(timestamp);

        // number of seconds between the given timestamp and the current time.
        let offset = timestamp.saturating_sub(now);
        Ok(Duration::from_millis(offset).as_secs())
    }

    /// Set the next block gas limit
    ///
    /// Handler for RPC call: `evm_setBlockGasLimit`
    pub fn evm_set_block_gas_limit(&self, gas_limit: U256) -> Result<bool> {
        node_info!("evm_setBlockGasLimit");
        self.backend.set_gas_limit(gas_limit.to());
        Ok(true)
    }

    /// Sets an interval for the block timestamp
    ///
    /// Handler for RPC call: `anvil_setBlockTimestampInterval`
    pub fn evm_set_block_timestamp_interval(&self, seconds: u64) -> Result<()> {
        node_info!("anvil_setBlockTimestampInterval");
        self.backend.time().set_block_timestamp_interval(seconds);
        Ok(())
    }

    /// Sets an interval for the block timestamp
    ///
    /// Handler for RPC call: `anvil_removeBlockTimestampInterval`
    pub fn evm_remove_block_timestamp_interval(&self) -> Result<bool> {
        node_info!("anvil_removeBlockTimestampInterval");
        Ok(self.backend.time().remove_block_timestamp_interval())
    }

    /// Mine blocks, instantly.
    ///
    /// Handler for RPC call: `evm_mine`
    ///
    /// This will mine the blocks regardless of the configured mining mode.
    /// **Note**: ganache returns `0x0` here as placeholder for additional meta-data in the future.
    pub async fn evm_mine(&self, opts: Option<MineOptions>) -> Result<String> {
        node_info!("evm_mine");

        self.do_evm_mine(opts).await?;

        Ok("0x0".to_string())
    }

    /// Mine blocks, instantly and return the mined blocks.
    ///
    /// Handler for RPC call: `evm_mine_detailed`
    ///
    /// This will mine the blocks regardless of the configured mining mode.
    ///
    /// **Note**: This behaves exactly as [Self::evm_mine] but returns different output, for
    /// compatibility reasons, this is a separate call since `evm_mine` is not an anvil original.
    /// and `ganache` may change the `0x0` placeholder.
    pub async fn evm_mine_detailed(&self, opts: Option<MineOptions>) -> Result<Vec<AnyRpcBlock>> {
        node_info!("evm_mine_detailed");

        let mined_blocks = self.do_evm_mine(opts).await?;

        let mut blocks = Vec::with_capacity(mined_blocks as usize);

        let latest = self.backend.best_number();
        for offset in (0..mined_blocks).rev() {
            let block_num = latest - offset;
            if let Some(mut block) =
                self.backend.block_by_number_full(BlockNumber::Number(block_num)).await?
            {
                let block_txs = match block.transactions_mut() {
                    BlockTransactions::Full(txs) => txs,
                    BlockTransactions::Hashes(_) | BlockTransactions::Uncle => unreachable!(),
                };
                for tx in block_txs.iter_mut() {
                    if let Some(receipt) = self.backend.mined_transaction_receipt(tx.tx_hash())
                        && let Some(output) = receipt.out
                    {
                        // insert revert reason if failure
                        if !receipt
                            .inner
                            .inner
                            .as_receipt_with_bloom()
                            .receipt
                            .status
                            .coerce_status()
                            && let Some(reason) = RevertDecoder::new().maybe_decode(&output, None)
                        {
                            tx.other.insert(
                                "revertReason".to_string(),
                                serde_json::to_value(reason).expect("Infallible"),
                            );
                        }
                        tx.other.insert(
                            "output".to_string(),
                            serde_json::to_value(output).expect("Infallible"),
                        );
                    }
                }
                block.transactions = BlockTransactions::Full(block_txs.to_vec());
                blocks.push(block);
            }
        }

        Ok(blocks)
    }

    /// Sets the reported block number
    ///
    /// Handler for ETH RPC call: `anvil_setBlock`
    pub fn anvil_set_block(&self, block_number: u64) -> Result<()> {
        node_info!("anvil_setBlock");
        self.backend.set_block_number(block_number);
        Ok(())
    }

    /// Sets the backend rpc url
    ///
    /// Handler for ETH RPC call: `anvil_setRpcUrl`
    pub fn anvil_set_rpc_url(&self, url: String) -> Result<()> {
        node_info!("anvil_setRpcUrl");
        if let Some(fork) = self.backend.get_fork() {
            let mut config = fork.config.write();
            // let interval = config.provider.get_interval();
            let new_provider = Arc::new(
                ProviderBuilder::new(&url).max_retry(10).initial_backoff(1000).build().map_err(
                    |_| {
                        TransportErrorKind::custom_str(
                            format!("Failed to parse invalid url {url}").as_str(),
                        )
                    },
                    // TODO: Add interval
                )?, // .interval(interval),
            );
            config.provider = new_provider;
            trace!(target: "backend", "Updated fork rpc from \"{}\" to \"{}\"", config.eth_rpc_url, url);
            config.eth_rpc_url = url;
        }
        Ok(())
    }

    /// Turn on call traces for transactions that are returned to the user when they execute a
    /// transaction (instead of just txhash/receipt)
    ///
    /// Handler for ETH RPC call: `anvil_enableTraces`
    pub async fn anvil_enable_traces(&self) -> Result<()> {
        node_info!("anvil_enableTraces");
        Err(BlockchainError::RpcUnimplemented)
    }

    /// Execute a transaction regardless of signature status
    ///
    /// Handler for ETH RPC call: `eth_sendUnsignedTransaction`
    pub async fn eth_send_unsigned_transaction(
        &self,
        request: WithOtherFields<TransactionRequest>,
    ) -> Result<TxHash> {
        node_info!("eth_sendUnsignedTransaction");
        // either use the impersonated account of the request's `from` field
        let from = request.from.ok_or(BlockchainError::NoSignerAvailable)?;

        let (nonce, on_chain_nonce) = self.request_nonce(&request, from).await?;

        let request = self.build_typed_tx_request(request, nonce)?;

        let bypass_signature = self.impersonated_signature(&request);
        let transaction = sign::build_typed_transaction(request, bypass_signature)?;

        self.ensure_typed_transaction_supported(&transaction)?;

        let pending_transaction = PendingTransaction::with_impersonated(transaction, from);

        // pre-validate
        self.backend.validate_pool_transaction(&pending_transaction).await?;

        let requires = required_marker(nonce, on_chain_nonce, from);
        let provides = vec![to_marker(nonce, from)];

        self.add_pending_transaction(pending_transaction, requires, provides)
    }

    /// Returns the number of transactions currently pending for inclusion in the next block(s), as
    /// well as the ones that are being scheduled for future execution only.
    /// Ref: [Here](https://geth.ethereum.org/docs/rpc/ns-txpool#txpool_status)
    ///
    /// Handler for ETH RPC call: `txpool_status`
    pub async fn txpool_status(&self) -> Result<TxpoolStatus> {
        node_info!("txpool_status");
        Ok(self.pool.txpool_status())
    }

    /// Returns a summary of all the transactions currently pending for inclusion in the next
    /// block(s), as well as the ones that are being scheduled for future execution only.
    ///
    /// See [here](https://geth.ethereum.org/docs/rpc/ns-txpool#txpool_inspect) for more details
    ///
    /// Handler for ETH RPC call: `txpool_inspect`
    pub async fn txpool_inspect(&self) -> Result<TxpoolInspect> {
        node_info!("txpool_inspect");
        let mut inspect = TxpoolInspect::default();

        fn convert(tx: Arc<PoolTransaction>) -> TxpoolInspectSummary {
            let tx = &tx.pending_transaction.transaction;
            let to = tx.to();
            let gas_price = tx.gas_price();
            let value = tx.value();
            let gas = tx.gas_limit();
            TxpoolInspectSummary { to, value, gas, gas_price }
        }

        // Note: naming differs geth vs anvil:
        //
        // _Pending transactions_ are transactions that are ready to be processed and included in
        // the block. _Queued transactions_ are transactions where the transaction nonce is
        // not in sequence. The transaction nonce is an incrementing number for each transaction
        // with the same From address.
        for pending in self.pool.ready_transactions() {
            let entry = inspect.pending.entry(*pending.pending_transaction.sender()).or_default();
            let key = pending.pending_transaction.nonce().to_string();
            entry.insert(key, convert(pending));
        }
        for queued in self.pool.pending_transactions() {
            let entry = inspect.pending.entry(*queued.pending_transaction.sender()).or_default();
            let key = queued.pending_transaction.nonce().to_string();
            entry.insert(key, convert(queued));
        }
        Ok(inspect)
    }

    /// Returns the details of all transactions currently pending for inclusion in the next
    /// block(s), as well as the ones that are being scheduled for future execution only.
    ///
    /// See [here](https://geth.ethereum.org/docs/rpc/ns-txpool#txpool_content) for more details
    ///
    /// Handler for ETH RPC call: `txpool_inspect`
    pub async fn txpool_content(&self) -> Result<TxpoolContent<AnyRpcTransaction>> {
        node_info!("txpool_content");
        let mut content = TxpoolContent::<AnyRpcTransaction>::default();
        fn convert(tx: Arc<PoolTransaction>) -> Result<AnyRpcTransaction> {
            let from = *tx.pending_transaction.sender();
            let tx = transaction_build(
                Some(tx.hash()),
                tx.pending_transaction.transaction.clone(),
                None,
                None,
                None,
            );

            let WithOtherFields { inner: mut tx, other } = tx.0;

            // we set the from field here explicitly to the set sender of the pending transaction,
            // in case the transaction is impersonated.
            tx.inner = Recovered::new_unchecked(tx.inner.into_inner(), from);

            let tx = AnyRpcTransaction(WithOtherFields { inner: tx, other });

            Ok(tx)
        }

        for pending in self.pool.ready_transactions() {
            let entry = content.pending.entry(*pending.pending_transaction.sender()).or_default();
            let key = pending.pending_transaction.nonce().to_string();
            entry.insert(key, convert(pending)?);
        }
        for queued in self.pool.pending_transactions() {
            let entry = content.pending.entry(*queued.pending_transaction.sender()).or_default();
            let key = queued.pending_transaction.nonce().to_string();
            entry.insert(key, convert(queued)?);
        }

        Ok(content)
    }
}

// ===== impl Wallet endpoints =====
impl EthApi {
    /// Get the capabilities of the wallet.
    ///
    /// See also [EIP-5792][eip-5792].
    ///
    /// [eip-5792]: https://eips.ethereum.org/EIPS/eip-5792
    pub fn get_capabilities(&self) -> Result<WalletCapabilities> {
        node_info!("wallet_getCapabilities");
        Ok(self.backend.get_capabilities())
    }

    /// Add an address to the delegation capability of wallet.
    ///
    /// This entails that the executor will now be able to sponsor transactions to this address.
    pub fn anvil_add_capability(&self, address: Address) -> Result<()> {
        node_info!("anvil_addCapability");
        self.backend.add_capability(address);
        Ok(())
    }

    pub fn anvil_set_executor(&self, executor_pk: String) -> Result<Address> {
        node_info!("anvil_setExecutor");
        self.backend.set_executor(executor_pk)
    }
}

impl EthApi {
    /// Executes the future on a new blocking task.
    async fn on_blocking_task<C, F, R>(&self, c: C) -> Result<R>
    where
        C: FnOnce(Self) -> F,
        F: Future<Output = Result<R>> + Send + 'static,
        R: Send + 'static,
    {
        let (tx, rx) = oneshot::channel();
        let this = self.clone();
        let f = c(this);
        tokio::task::spawn_blocking(move || {
            tokio::runtime::Handle::current().block_on(async move {
                let res = f.await;
                let _ = tx.send(res);
            })
        });
        rx.await.map_err(|_| BlockchainError::Internal("blocking task panicked".to_string()))?
    }

    /// Executes the `evm_mine` and returns the number of blocks mined
    async fn do_evm_mine(&self, opts: Option<MineOptions>) -> Result<u64> {
        let mut blocks_to_mine = 1u64;

        if let Some(opts) = opts {
            let timestamp = match opts {
                MineOptions::Timestamp(timestamp) => timestamp,
                MineOptions::Options { timestamp, blocks } => {
                    if let Some(blocks) = blocks {
                        blocks_to_mine = blocks;
                    }
                    timestamp
                }
            };
            if let Some(timestamp) = timestamp {
                // timestamp was explicitly provided to be the next timestamp
                self.evm_set_next_block_timestamp(timestamp)?;
            }
        }

        // this can be blocking for a bit, especially in forking mode
        // <https://github.com/foundry-rs/foundry/issues/6036>
        self.on_blocking_task(|this| async move {
            // mine all the blocks
            for _ in 0..blocks_to_mine {
                this.mine_one().await;
            }
            Ok(())
        })
        .await?;

        Ok(blocks_to_mine)
    }

    async fn do_estimate_gas(
        &self,
        request: WithOtherFields<TransactionRequest>,
        block_number: Option<BlockId>,
        overrides: EvmOverrides,
    ) -> Result<u128> {
        let block_request = self.block_request(block_number).await?;
        // check if the number predates the fork, if in fork mode
        if let BlockRequest::Number(number) = block_request
            && let Some(fork) = self.get_fork()
            && fork.predates_fork(number)
        {
            if overrides.has_state() || overrides.has_block() {
                return Err(BlockchainError::EvmOverrideError(
                    "not available on past forked blocks".to_string(),
                ));
            }
            return Ok(fork.estimate_gas(&request, Some(number.into())).await?);
        }

        // this can be blocking for a bit, especially in forking mode
        // <https://github.com/foundry-rs/foundry/issues/6036>
        self.on_blocking_task(|this| async move {
            this.backend
                .with_database_at(Some(block_request), |state, mut block| {
                    let mut cache_db = CacheDB::new(state);
                    if let Some(state_overrides) = overrides.state {
                        apply_state_overrides(
                            state_overrides.into_iter().collect(),
                            &mut cache_db,
                        )?;
                    }
                    if let Some(block_overrides) = overrides.block {
                        cache_db.apply_block_overrides(*block_overrides, &mut block);
                    }
                    this.do_estimate_gas_with_state(request, &cache_db, block)
                })
                .await?
        })
        .await
    }

    /// Estimates the gas usage of the `request` with the state.
    ///
    /// This will execute the transaction request and find the best gas limit via binary search.
    fn do_estimate_gas_with_state(
        &self,
        mut request: WithOtherFields<TransactionRequest>,
        state: &dyn DatabaseRef,
        block_env: BlockEnv,
    ) -> Result<u128> {
        // If the request is a simple native token transfer we can optimize
        // We assume it's a transfer if we have no input data.
        let to = request.to.as_ref().and_then(TxKind::to);

        // check certain fields to see if the request could be a simple transfer
        let maybe_transfer = (request.input.input().is_none()
            || request.input.input().is_some_and(|data| data.is_empty()))
            && request.authorization_list.is_none()
            && request.access_list.is_none()
            && request.blob_versioned_hashes.is_none();

        if maybe_transfer
            && let Some(to) = to
            && let Ok(target_code) = self.backend.get_code_with_state(&state, *to)
            && target_code.as_ref().is_empty()
        {
            return Ok(MIN_TRANSACTION_GAS);
        }

        let fees = FeeDetails::new(
            request.gas_price,
            request.max_fee_per_gas,
            request.max_priority_fee_per_gas,
            request.max_fee_per_blob_gas,
        )?
        .or_zero_fees();

        // get the highest possible gas limit, either the request's set value or the currently
        // configured gas limit
        let mut highest_gas_limit = request.gas.map_or(block_env.gas_limit.into(), |g| g as u128);

        let gas_price = fees.gas_price.unwrap_or_default();
        // If we have non-zero gas price, cap gas limit by sender balance
        if gas_price > 0
            && let Some(from) = request.from
        {
            let mut available_funds = self.backend.get_balance_with_state(state, from)?;
            if let Some(value) = request.value {
                if value > available_funds {
                    return Err(InvalidTransactionError::InsufficientFunds.into());
                }
                // safe: value < available_funds
                available_funds -= value;
            }
            // amount of gas the sender can afford with the `gas_price`
            let allowance = available_funds.checked_div(U256::from(gas_price)).unwrap_or_default();
            highest_gas_limit = std::cmp::min(highest_gas_limit, allowance.saturating_to());
        }

        let mut call_to_estimate = request.clone();
        call_to_estimate.gas = Some(highest_gas_limit as u64);

        // execute the call without writing to db
        let ethres =
            self.backend.call_with_state(&state, call_to_estimate, fees.clone(), block_env.clone());

        let gas_used = match ethres.try_into()? {
            GasEstimationCallResult::Success(gas) => Ok(gas),
            GasEstimationCallResult::OutOfGas => {
                Err(InvalidTransactionError::BasicOutOfGas(highest_gas_limit).into())
            }
            GasEstimationCallResult::Revert(output) => {
                Err(InvalidTransactionError::Revert(output).into())
            }
            GasEstimationCallResult::EvmError(err) => {
                warn!(target: "node", "estimation failed due to {:?}", err);
                Err(BlockchainError::EvmError(err))
            }
        }?;

        // at this point we know the call succeeded but want to find the _best_ (lowest) gas the
        // transaction succeeds with. we find this by doing a binary search over the
        // possible range NOTE: this is the gas the transaction used, which is less than the
        // transaction requires to succeed

        // Get the starting lowest gas needed depending on the transaction kind.
        let mut lowest_gas_limit = determine_base_gas_by_kind(&request);

        // pick a point that's close to the estimated gas
        let mut mid_gas_limit =
            std::cmp::min(gas_used * 3, (highest_gas_limit + lowest_gas_limit) / 2);

        // Binary search for the ideal gas limit
        while (highest_gas_limit - lowest_gas_limit) > 1 {
            request.gas = Some(mid_gas_limit as u64);
            let ethres = self.backend.call_with_state(
                &state,
                request.clone(),
                fees.clone(),
                block_env.clone(),
            );

            match ethres.try_into()? {
                GasEstimationCallResult::Success(_) => {
                    // If the transaction succeeded, we can set a ceiling for the highest gas limit
                    // at the current midpoint, as spending any more gas would
                    // make no sense (as the TX would still succeed).
                    highest_gas_limit = mid_gas_limit;
                }
                GasEstimationCallResult::OutOfGas
                | GasEstimationCallResult::Revert(_)
                | GasEstimationCallResult::EvmError(_) => {
                    // If the transaction failed, we can set a floor for the lowest gas limit at the
                    // current midpoint, as spending any less gas would make no
                    // sense (as the TX would still revert due to lack of gas).
                    //
                    // We don't care about the reason here, as we known that transaction is correct
                    // as it succeeded earlier
                    lowest_gas_limit = mid_gas_limit;
                }
            };
            // new midpoint
            mid_gas_limit = (highest_gas_limit + lowest_gas_limit) / 2;
        }

        trace!(target : "node", "Estimated Gas for call {:?}", highest_gas_limit);

        Ok(highest_gas_limit)
    }

    /// Updates the `TransactionOrder`
    pub fn set_transaction_order(&self, order: TransactionOrder) {
        *self.transaction_order.write() = order;
    }

    /// Returns the priority of the transaction based on the current `TransactionOrder`
    fn transaction_priority(&self, tx: &TypedTransaction) -> TransactionPriority {
        self.transaction_order.read().priority(tx)
    }

    /// Returns the chain ID used for transaction
    pub fn chain_id(&self) -> u64 {
        self.backend.chain_id().to::<u64>()
    }

    /// Returns the configured fork, if any.
    pub fn get_fork(&self) -> Option<ClientFork> {
        self.backend.get_fork()
    }

    /// Returns the current instance's ID.
    pub fn instance_id(&self) -> B256 {
        *self.instance_id.read()
    }

    /// Resets the instance ID.
    pub fn reset_instance_id(&self) {
        *self.instance_id.write() = B256::random();
    }

    /// Returns the first signer that can sign for the given address
    #[expect(clippy::borrowed_box)]
    pub fn get_signer(&self, address: Address) -> Option<&Box<dyn Signer>> {
        self.signers.iter().find(|signer| signer.is_signer_for(address))
    }

    /// Returns a new block event stream that yields Notifications when a new block was added
    pub fn new_block_notifications(&self) -> NewBlockNotifications {
        self.backend.new_block_notifications()
    }

    /// Returns a new listeners for ready transactions
    pub fn new_ready_transactions(&self) -> Receiver<TxHash> {
        self.pool.add_ready_listener()
    }

    /// Returns a listener for pending transactions, yielding full transactions
    pub fn full_pending_transactions(&self) -> UnboundedReceiver<AnyRpcTransaction> {
        let (tx, rx) = unbounded_channel();
        let mut hashes = self.new_ready_transactions();

        let this = self.clone();

        tokio::spawn(async move {
            while let Some(hash) = hashes.next().await {
                if let Ok(Some(txn)) = this.transaction_by_hash(hash).await
                    && tx.send(txn).is_err()
                {
                    break;
                }
            }
        });

        rx
    }

    /// Returns a new accessor for certain storage elements
    pub fn storage_info(&self) -> StorageInfo {
        StorageInfo::new(Arc::clone(&self.backend))
    }

    /// Returns true if forked
    pub fn is_fork(&self) -> bool {
        self.backend.is_fork()
    }

    /// Mines exactly one block
    pub async fn mine_one(&self) {
        let transactions = self.pool.ready_transactions().collect::<Vec<_>>();
        let outcome = self.backend.mine_block(transactions).await;

        trace!(target: "node", blocknumber = ?outcome.block_number, "mined block");
        self.pool.on_mined_block(outcome);
    }

    /// Returns the pending block with tx hashes
    async fn pending_block(&self) -> AnyRpcBlock {
        let transactions = self.pool.ready_transactions().collect::<Vec<_>>();
        let info = self.backend.pending_block(transactions).await;
        self.backend.convert_block(info.block)
    }

    /// Returns the full pending block with `Transaction` objects
    async fn pending_block_full(&self) -> Option<AnyRpcBlock> {
        let transactions = self.pool.ready_transactions().collect::<Vec<_>>();
        let BlockInfo { block, transactions, receipts: _ } =
            self.backend.pending_block(transactions).await;

        let mut partial_block = self.backend.convert_block(block.clone());

        let mut block_transactions = Vec::with_capacity(block.transactions.len());
        let base_fee = self.backend.base_fee();

        for info in transactions {
            let tx = block.transactions.get(info.transaction_index as usize)?.clone();

            let tx = transaction_build(
                Some(info.transaction_hash),
                tx,
                Some(&block),
                Some(info),
                Some(base_fee),
            );
            block_transactions.push(tx);
        }

        partial_block.transactions = BlockTransactions::from(block_transactions);

        Some(partial_block)
    }

    fn build_typed_tx_request(
        &self,
        request: WithOtherFields<TransactionRequest>,
        nonce: u64,
    ) -> Result<TypedTransactionRequest> {
        let chain_id = request.chain_id.unwrap_or_else(|| self.chain_id());
        let max_fee_per_gas = request.max_fee_per_gas;
        let max_fee_per_blob_gas = request.max_fee_per_blob_gas;
        let gas_price = request.gas_price;

        let gas_limit = request.gas.unwrap_or_else(|| self.backend.gas_limit());
        let from = request.from;

        let request = match transaction_request_to_typed(request) {
            Some(TypedTransactionRequest::Legacy(mut m)) => {
                m.nonce = nonce;
                m.chain_id = Some(chain_id);
                m.gas_limit = gas_limit;
                if gas_price.is_none() {
                    m.gas_price = self.gas_price();
                }
                TypedTransactionRequest::Legacy(m)
            }
            Some(TypedTransactionRequest::EIP2930(mut m)) => {
                m.nonce = nonce;
                m.chain_id = chain_id;
                m.gas_limit = gas_limit;
                if gas_price.is_none() {
                    m.gas_price = self.gas_price();
                }
                TypedTransactionRequest::EIP2930(m)
            }
            Some(TypedTransactionRequest::EIP1559(mut m)) => {
                m.nonce = nonce;
                m.chain_id = chain_id;
                m.gas_limit = gas_limit;
                if max_fee_per_gas.is_none() {
                    m.max_fee_per_gas = self.gas_price();
                }
                TypedTransactionRequest::EIP1559(m)
            }
            Some(TypedTransactionRequest::EIP7702(mut m)) => {
                m.nonce = nonce;
                m.chain_id = chain_id;
                m.gas_limit = gas_limit;
                if max_fee_per_gas.is_none() {
                    m.max_fee_per_gas = self.gas_price();
                }
                TypedTransactionRequest::EIP7702(m)
            }
            Some(TypedTransactionRequest::EIP4844(m)) => {
                TypedTransactionRequest::EIP4844(match m {
                    // We only accept the TxEip4844 variant which has the sidecar.
                    TxEip4844Variant::TxEip4844WithSidecar(mut m) => {
                        m.tx.nonce = nonce;
                        m.tx.chain_id = chain_id;
                        m.tx.gas_limit = gas_limit;
                        if max_fee_per_gas.is_none() {
                            m.tx.max_fee_per_gas = self.gas_price();
                        }
                        if max_fee_per_blob_gas.is_none() {
                            m.tx.max_fee_per_blob_gas = self
                                .excess_blob_gas_and_price()
                                .unwrap_or_default()
                                .map_or(0, |g| g.blob_gasprice)
                        }
                        TxEip4844Variant::TxEip4844WithSidecar(m)
                    }
                    TxEip4844Variant::TxEip4844(mut tx) => {
                        if !self.backend.skip_blob_validation(from) {
                            return Err(BlockchainError::FailedToDecodeTransaction);
                        }

                        // Allows 4844 with no sidecar when impersonation is active.
                        tx.nonce = nonce;
                        tx.chain_id = chain_id;
                        tx.gas_limit = gas_limit;
                        if max_fee_per_gas.is_none() {
                            tx.max_fee_per_gas = self.gas_price();
                        }
                        if max_fee_per_blob_gas.is_none() {
                            tx.max_fee_per_blob_gas = self
                                .excess_blob_gas_and_price()
                                .unwrap_or_default()
                                .map_or(0, |g| g.blob_gasprice)
                        }

                        TxEip4844Variant::TxEip4844(tx)
                    }
                })
            }
            Some(TypedTransactionRequest::Deposit(mut m)) => {
                m.gas_limit = gas_limit;
                TypedTransactionRequest::Deposit(m)
            }
            None => return Err(BlockchainError::FailedToDecodeTransaction),
        };
        Ok(request)
    }

    /// Returns true if the `addr` is currently impersonated
    pub fn is_impersonated(&self, addr: Address) -> bool {
        self.backend.cheats().is_impersonated(addr)
    }

    /// The signature used to bypass signing via the `eth_sendUnsignedTransaction` cheat RPC
    fn impersonated_signature(&self, request: &TypedTransactionRequest) -> Signature {
        match request {
            // Only the legacy transaction type requires v to be in {27, 28}, thus
            // requiring the use of Parity::NonEip155
            TypedTransactionRequest::Legacy(_) => Signature::from_scalars_and_parity(
                B256::with_last_byte(1),
                B256::with_last_byte(1),
                false,
            ),
            TypedTransactionRequest::EIP2930(_)
            | TypedTransactionRequest::EIP1559(_)
            | TypedTransactionRequest::EIP7702(_)
            | TypedTransactionRequest::EIP4844(_)
            | TypedTransactionRequest::Deposit(_) => Signature::from_scalars_and_parity(
                B256::with_last_byte(1),
                B256::with_last_byte(1),
                false,
            ),
        }
    }

    /// Returns the nonce of the `address` depending on the `block_number`
    async fn get_transaction_count(
        &self,
        address: Address,
        block_number: Option<BlockId>,
    ) -> Result<u64> {
        let block_request = self.block_request(block_number).await?;

        if let BlockRequest::Number(number) = block_request
            && let Some(fork) = self.get_fork()
            && fork.predates_fork(number)
        {
            return Ok(fork.get_nonce(address, number).await?);
        }

        self.backend.get_nonce(address, block_request).await
    }

    /// Returns the nonce for this request
    ///
    /// This returns a tuple of `(request nonce, highest nonce)`
    /// If the nonce field of the `request` is `None` then the tuple will be `(highest nonce,
    /// highest nonce)`.
    ///
    /// This will also check the tx pool for pending transactions from the sender.
    async fn request_nonce(
        &self,
        request: &TransactionRequest,
        from: Address,
    ) -> Result<(u64, u64)> {
        let highest_nonce =
            self.get_transaction_count(from, Some(BlockId::Number(BlockNumber::Pending))).await?;
        let nonce = request.nonce.unwrap_or(highest_nonce);

        Ok((nonce, highest_nonce))
    }

    /// Adds the given transaction to the pool
    fn add_pending_transaction(
        &self,
        pending_transaction: PendingTransaction,
        requires: Vec<TxMarker>,
        provides: Vec<TxMarker>,
    ) -> Result<TxHash> {
        let from = *pending_transaction.sender();
        let priority = self.transaction_priority(&pending_transaction.transaction);
        let pool_transaction =
            PoolTransaction { requires, provides, pending_transaction, priority };
        let tx = self.pool.add_transaction(pool_transaction)?;
        trace!(target: "node", "Added transaction: [{:?}] sender={:?}", tx.hash(), from);
        Ok(*tx.hash())
    }

    /// Returns the current state root
    pub async fn state_root(&self) -> Option<B256> {
        self.backend.get_db().read().await.maybe_state_root()
    }

    /// additional validation against hardfork
    fn ensure_typed_transaction_supported(&self, tx: &TypedTransaction) -> Result<()> {
        match &tx {
            TypedTransaction::EIP2930(_) => self.backend.ensure_eip2930_active(),
            TypedTransaction::EIP1559(_) => self.backend.ensure_eip1559_active(),
            TypedTransaction::EIP4844(_) => self.backend.ensure_eip4844_active(),
            TypedTransaction::EIP7702(_) => self.backend.ensure_eip7702_active(),
            TypedTransaction::Deposit(_) => self.backend.ensure_op_deposits_active(),
            TypedTransaction::Legacy(_) => Ok(()),
        }
    }
}

fn required_marker(provided_nonce: u64, on_chain_nonce: u64, from: Address) -> Vec<TxMarker> {
    if provided_nonce == on_chain_nonce {
        return Vec::new();
    }
    let prev_nonce = provided_nonce.saturating_sub(1);
    if on_chain_nonce <= prev_nonce { vec![to_marker(prev_nonce, from)] } else { Vec::new() }
}

fn convert_transact_out(out: &Option<Output>) -> Bytes {
    match out {
        None => Default::default(),
        Some(Output::Call(out)) => out.to_vec().into(),
        Some(Output::Create(out, _)) => out.to_vec().into(),
    }
}

/// Returns an error if the `exit` code is _not_ ok
fn ensure_return_ok(exit: InstructionResult, out: &Option<Output>) -> Result<Bytes> {
    let out = convert_transact_out(out);
    match exit {
        return_ok!() => Ok(out),
        return_revert!() => Err(InvalidTransactionError::Revert(Some(out.0.into())).into()),
        reason => Err(BlockchainError::EvmError(reason)),
    }
}

/// Determines the minimum gas needed for a transaction depending on the transaction kind.
fn determine_base_gas_by_kind(request: &WithOtherFields<TransactionRequest>) -> u128 {
    match transaction_request_to_typed(request.clone()) {
        Some(request) => match request {
            TypedTransactionRequest::Legacy(req) => match req.to {
                TxKind::Call(_) => MIN_TRANSACTION_GAS,
                TxKind::Create => MIN_CREATE_GAS,
            },
            TypedTransactionRequest::EIP1559(req) => match req.to {
                TxKind::Call(_) => MIN_TRANSACTION_GAS,
                TxKind::Create => MIN_CREATE_GAS,
            },
            TypedTransactionRequest::EIP7702(req) => {
                MIN_TRANSACTION_GAS
                    + req.authorization_list.len() as u128 * PER_EMPTY_ACCOUNT_COST as u128
            }
            TypedTransactionRequest::EIP2930(req) => match req.to {
                TxKind::Call(_) => MIN_TRANSACTION_GAS,
                TxKind::Create => MIN_CREATE_GAS,
            },
            TypedTransactionRequest::EIP4844(_) => MIN_TRANSACTION_GAS,
            TypedTransactionRequest::Deposit(req) => match req.to {
                TxKind::Call(_) => MIN_TRANSACTION_GAS,
                TxKind::Create => MIN_CREATE_GAS,
            },
        },
        // Tighten the gas limit upwards if we don't know the transaction type to avoid deployments
        // failing.
        _ => MIN_CREATE_GAS,
    }
}

/// Keeps result of a call to revm EVM used for gas estimation
enum GasEstimationCallResult {
    Success(u128),
    OutOfGas,
    Revert(Option<Bytes>),
    EvmError(InstructionResult),
}

/// Converts the result of a call to revm EVM into a [`GasEstimationCallResult`].
///
/// Expected to stay up to date with: <https://github.com/bluealloy/revm/blob/main/crates/interpreter/src/instruction_result.rs>
impl TryFrom<Result<(InstructionResult, Option<Output>, u128, State)>> for GasEstimationCallResult {
    type Error = BlockchainError;

    fn try_from(res: Result<(InstructionResult, Option<Output>, u128, State)>) -> Result<Self> {
        match res {
            // Exceptional case: init used too much gas, treated as out of gas error
            Err(BlockchainError::InvalidTransaction(InvalidTransactionError::GasTooHigh(_))) => {
                Ok(Self::OutOfGas)
            }
            Err(err) => Err(err),
            Ok((exit, output, gas, _)) => match exit {
                return_ok!() => Ok(Self::Success(gas)),

                // Revert opcodes:
                InstructionResult::Revert => Ok(Self::Revert(output.map(|o| o.into_data()))),
                InstructionResult::CallTooDeep
                | InstructionResult::OutOfFunds
                | InstructionResult::CreateInitCodeStartingEF00
                | InstructionResult::InvalidEOFInitCode
                | InstructionResult::InvalidExtDelegateCallTarget => Ok(Self::EvmError(exit)),

                // Out of gas errors:
                InstructionResult::OutOfGas
                | InstructionResult::MemoryOOG
                | InstructionResult::MemoryLimitOOG
                | InstructionResult::PrecompileOOG
                | InstructionResult::InvalidOperandOOG
                | InstructionResult::ReentrancySentryOOG => Ok(Self::OutOfGas),

                // Other errors:
                InstructionResult::OpcodeNotFound
                | InstructionResult::CallNotAllowedInsideStatic
                | InstructionResult::StateChangeDuringStaticCall
                | InstructionResult::InvalidFEOpcode
                | InstructionResult::InvalidJump
                | InstructionResult::NotActivated
                | InstructionResult::StackUnderflow
                | InstructionResult::StackOverflow
                | InstructionResult::OutOfOffset
                | InstructionResult::CreateCollision
                | InstructionResult::OverflowPayment
                | InstructionResult::PrecompileError
                | InstructionResult::NonceOverflow
                | InstructionResult::CreateContractSizeLimit
                | InstructionResult::CreateContractStartingWithEF
                | InstructionResult::CreateInitCodeSizeLimit
                | InstructionResult::FatalExternalError => Ok(Self::EvmError(exit)),
            },
        }
    }
}