//! Alloy basic Transaction Request type.
use crate::{transaction::AccessList, Transaction, TransactionTrait};
use alloc::{
string::{String, ToString},
vec,
vec::Vec,
};
use alloy_consensus::{
error::ValueError, transaction::Recovered, BlobTransactionSidecarVariant, SignableTransaction,
TxEip1559, TxEip2930, TxEip4844, TxEip4844Variant, TxEip4844WithSidecar, TxEip7702, TxEnvelope,
TxLegacy, TxType, Typed2718, TypedTransaction,
};
use alloy_eips::eip7702::SignedAuthorization;
use alloy_network_primitives::{TransactionBuilder4844, TransactionBuilder7702};
use alloy_primitives::{Address, Bytes, ChainId, Signature, TxKind, B256, U256};
use core::{hash::Hash, str::FromStr};
/// Represents _all_ transaction requests to/from RPC.
///
/// Transaction type selection is field-driven. The [`Self::transaction_type`] field is retained
/// for RPC serialization, but is not consulted by [`Self::minimal_tx_type`],
/// [`Self::preferred_type`], or the transaction build methods. Typed transaction builders use
/// mainnet chain ID `1` when [`Self::chain_id`] is absent.
#[derive(Clone, Debug, Default, PartialEq, Eq, Hash)]
#[cfg_attr(any(test, feature = "arbitrary"), derive(arbitrary::Arbitrary))]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
#[doc(alias = "TxRequest")]
pub struct TransactionRequest {
/// The address of the transaction author.
#[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
pub from: Option<Address>,
/// The destination address of the transaction.
#[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
pub to: Option<TxKind>,
/// The legacy gas price.
#[cfg_attr(
feature = "serde",
serde(
default,
skip_serializing_if = "Option::is_none",
with = "alloy_serde::quantity::opt"
)
)]
pub gas_price: Option<u128>,
/// The max base fee per gas the sender is willing to pay.
#[cfg_attr(
feature = "serde",
serde(
default,
skip_serializing_if = "Option::is_none",
with = "alloy_serde::quantity::opt"
)
)]
pub max_fee_per_gas: Option<u128>,
/// The max priority fee per gas the sender is willing to pay, also called the miner tip.
#[cfg_attr(
feature = "serde",
serde(
default,
skip_serializing_if = "Option::is_none",
with = "alloy_serde::quantity::opt"
)
)]
pub max_priority_fee_per_gas: Option<u128>,
/// The max fee per blob gas for EIP-4844 blob transactions.
#[cfg_attr(
feature = "serde",
serde(
default,
skip_serializing_if = "Option::is_none",
with = "alloy_serde::quantity::opt"
)
)]
pub max_fee_per_blob_gas: Option<u128>,
/// The gas limit for the transaction.
#[cfg_attr(
feature = "serde",
serde(
default,
skip_serializing_if = "Option::is_none",
with = "alloy_serde::quantity::opt"
)
)]
pub gas: Option<u64>,
/// The value transferred in the transaction, in wei.
#[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
pub value: Option<U256>,
/// Transaction data.
#[cfg_attr(feature = "serde", serde(default, flatten))]
pub input: TransactionInput,
/// The nonce of the transaction.
#[cfg_attr(
feature = "serde",
serde(
default,
skip_serializing_if = "Option::is_none",
with = "alloy_serde::quantity::opt"
)
)]
pub nonce: Option<u64>,
/// The chain ID for the transaction.
#[cfg_attr(
feature = "serde",
serde(
default,
skip_serializing_if = "Option::is_none",
with = "alloy_serde::quantity::opt"
)
)]
pub chain_id: Option<ChainId>,
/// An EIP-2930 access list, which lowers cost for accessing accounts and storages in the list. See [EIP-2930](https://eips.ethereum.org/EIPS/eip-2930) for more information.
#[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
pub access_list: Option<AccessList>,
/// The EIP-2718 transaction type reported to or received from RPC.
///
/// This is wire metadata and does not select the type used by the transaction build methods.
/// See [EIP-2718](https://eips.ethereum.org/EIPS/eip-2718) for more information.
#[cfg_attr(
feature = "serde",
serde(
default,
rename = "type",
skip_serializing_if = "Option::is_none",
with = "alloy_serde::quantity::opt"
)
)]
#[doc(alias = "tx_type")]
pub transaction_type: Option<u8>,
/// Blob versioned hashes for EIP-4844 transactions.
#[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
pub blob_versioned_hashes: Option<Vec<B256>>,
/// Blob sidecar for EIP-4844 transactions.
#[cfg_attr(
feature = "serde",
serde(default, flatten, skip_serializing_if = "Option::is_none")
)]
pub sidecar: Option<BlobTransactionSidecarVariant>,
/// Authorization list for EIP-7702 transactions.
#[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
pub authorization_list: Option<Vec<SignedAuthorization>>,
}
impl TransactionRequest {
/// Sets the `from` field in the call to the provided address
#[inline]
pub const fn from(mut self, from: Address) -> Self {
self.from = Some(from);
self
}
/// Initializes the [`TransactionRequest`] with the provided transaction.
///
/// Note: This leaves the `from` field empty.
pub fn from_transaction<T: TransactionTrait>(tx: T) -> Self {
let to = Some(tx.to().into());
let gas = tx.gas_limit();
let value = tx.value();
let input = tx.input().clone();
let nonce = tx.nonce();
let chain_id = tx.chain_id();
let access_list = tx.access_list().cloned();
let max_fee_per_blob_gas = tx.max_fee_per_blob_gas();
let authorization_list = tx.authorization_list().map(|l| l.to_vec());
let blob_versioned_hashes = tx.blob_versioned_hashes().map(Vec::from);
let tx_type = tx.ty();
// fees depending on the transaction type
let (gas_price, max_fee_per_gas) = if tx.is_dynamic_fee() {
(None, Some(tx.max_fee_per_gas()))
} else {
(Some(tx.max_fee_per_gas()), None)
};
let max_priority_fee_per_gas = tx.max_priority_fee_per_gas();
Self {
from: None,
to,
gas_price,
max_fee_per_gas,
max_priority_fee_per_gas,
gas: Some(gas),
value: Some(value),
input: TransactionInput::new(input),
nonce: Some(nonce),
chain_id,
access_list,
max_fee_per_blob_gas,
blob_versioned_hashes,
transaction_type: Some(tx_type),
sidecar: None,
authorization_list,
}
}
/// Initializes the [`TransactionRequest`] with the provided transaction and sender.
pub fn from_recovered_transaction<T: TransactionTrait>(tx: Recovered<T>) -> Self {
let (tx, from) = tx.into_parts();
Self::from_transaction(tx).from(from)
}
/// Initializes the [`TransactionRequest`] with the provided transaction and sender.
pub fn from_transaction_with_sender<T: TransactionTrait>(tx: T, from: Address) -> Self {
Self::from_transaction(tx).from(from)
}
/// Sets the transactions type for the transactions.
#[doc(alias = "tx_type")]
pub const fn transaction_type(mut self, transaction_type: u8) -> Self {
self.transaction_type = Some(transaction_type);
self
}
/// Sets the gas limit for the transaction.
pub const fn gas_limit(mut self, gas_limit: u64) -> Self {
self.gas = Some(gas_limit);
self
}
/// Sets the nonce for the transaction.
pub const fn nonce(mut self, nonce: u64) -> Self {
self.nonce = Some(nonce);
self
}
/// Sets the gas price for the transaction.
pub const fn gas_price(mut self, gas_price: u128) -> Self {
self.gas_price = Some(gas_price);
self
}
/// Sets the maximum fee per gas for the transaction.
pub const fn max_fee_per_gas(mut self, max_fee_per_gas: u128) -> Self {
self.max_fee_per_gas = Some(max_fee_per_gas);
self
}
/// Sets the maximum priority fee per gas for the transaction.
pub const fn max_priority_fee_per_gas(mut self, max_priority_fee_per_gas: u128) -> Self {
self.max_priority_fee_per_gas = Some(max_priority_fee_per_gas);
self
}
/// Sets the maximum fee per blob gas for the transaction.
pub const fn max_fee_per_blob_gas(mut self, max_fee_per_blob_gas: u128) -> Self {
self.max_fee_per_blob_gas = Some(max_fee_per_blob_gas);
self
}
/// Sets the recipient address for the transaction.
#[inline]
pub const fn to(mut self, to: Address) -> Self {
self.to = Some(TxKind::Call(to));
self
}
/// Marks this transaction as a contract creation (deploy) with no recipient.
#[inline]
pub const fn create(mut self) -> Self {
self.to = Some(TxKind::Create);
self
}
/// Sets the value (amount) for the transaction.
pub const fn value(mut self, value: U256) -> Self {
self.value = Some(value);
self
}
/// Sets the access list for the transaction.
pub fn access_list(mut self, access_list: AccessList) -> Self {
self.access_list = Some(access_list);
self
}
/// Sets the input data for the transaction.
///
/// This can be used to set both `input` and the `data` field, because some chains or services
/// still expect of the deprecated `data` field
///
/// ```
/// use alloy_rpc_types_eth::{TransactionInput, TransactionRequest};
/// let req = TransactionRequest::default().input(TransactionInput::both(b"00".into()));
/// ```
pub fn input(mut self, input: TransactionInput) -> Self {
self.input = input;
self
}
/// Ensures that if either `input` or `data` is set, the `input` field contains the value.
///
/// This removes `data` the data field.
pub fn normalize_input(&mut self) {
self.input.normalize_input()
}
/// Consumes the type and returns it with [`Self::normalize_input`] applied
pub fn normalized_input(mut self) -> Self {
self.normalize_input();
self
}
/// Ensures that if either `data` or `input` is set, the `data` field contains the value.
///
/// This removes `input` the data field.
pub fn normalize_data(&mut self) {
self.input.normalize_data();
}
/// Consumes the type and returns it with [`Self::normalize_data`] applied
pub fn normalized_data(mut self) -> Self {
self.normalize_data();
self
}
/// If only one field is set, this also sets the other field by with that value.
///
/// This is a noop if both fields are already set.
pub fn set_input_and_data(&mut self) {
self.input.set_both();
}
/// Consumes the type and returns it with [`Self::set_input_and_data`] applied.
pub fn with_input_and_data(mut self) -> Self {
self.set_input_and_data();
self
}
/// Returns the configured fee cap, if any.
///
/// The returns `gas_price` (legacy) if set or `max_fee_per_gas` (EIP1559)
#[inline]
pub fn fee_cap(&self) -> Option<u128> {
self.gas_price.or(self.max_fee_per_gas)
}
/// Returns true if _any_ of the EIP-4844 fields are set:
/// - blob sidecar
/// - blob versioned hashes
/// - max fee per blob gas
pub const fn has_eip4844_fields(&self) -> bool {
self.sidecar.is_some()
|| self.blob_versioned_hashes.is_some()
|| self.max_fee_per_blob_gas.is_some()
}
/// Returns true if the EIP-4844 blob data fields are set (sidecar or versioned hashes).
///
/// This differs from [`Self::has_eip4844_fields`] in that it does not consider
/// `max_fee_per_blob_gas` alone as sufficient to indicate a blob transaction.
/// This matches go-ethereum behavior where only the presence of `blob_versioned_hashes`
/// determines if a transaction is a blob transaction.
///
/// Use this method when determining the transaction type for building/simulation,
/// as just having a blob fee cap without actual blob data should not force the
/// transaction to be EIP-4844.
pub const fn has_eip4844_blob_data(&self) -> bool {
self.sidecar.is_some() || self.blob_versioned_hashes.is_some()
}
/// Returns true if _any_ of the EIP-1559 fee fields are set:
/// - max fee per gas
/// - max priority fee per gas
pub const fn has_eip1559_fields(&self) -> bool {
self.max_fee_per_gas.is_some() || self.max_priority_fee_per_gas.is_some()
}
/// Populate the `blob_versioned_hashes` key, if a sidecar exists. No
/// effect otherwise.
pub fn populate_blob_hashes(&mut self) {
if let Some(sidecar) = self.sidecar.as_ref() {
self.blob_versioned_hashes = Some(sidecar.versioned_hashes().collect())
}
}
/// Gets invalid fields for all transaction types
pub fn get_invalid_common_fields(&self) -> Vec<&'static str> {
let mut errors = vec![];
if self.nonce.is_none() {
errors.push("nonce");
}
if self.gas.is_none() {
errors.push("gas_limit");
}
errors
}
/// Gets invalid fields for EIP-1559 transaction type
pub fn get_invalid_1559_fields(&self) -> Vec<&'static str> {
let mut errors = vec![];
if self.max_priority_fee_per_gas.is_none() {
errors.push("max_priority_fee_per_gas");
}
if self.max_fee_per_gas.is_none() {
errors.push("max_fee_per_gas");
}
errors
}
/// Build a legacy transaction.
///
/// Returns an error if required fields are missing.
/// Use `complete_legacy` to check if the request can be built.
pub fn build_legacy(self) -> Result<TxLegacy, ValueError<Self>> {
// Check all required fields first
let Some(to) = self.to else {
return Err(ValueError::new(self, "Missing 'to' field for legacy transaction."));
};
let Some(nonce) = self.nonce else {
return Err(ValueError::new(self, "Missing 'nonce' field for legacy transaction."));
};
let Some(gas_price) = self.gas_price else {
return Err(ValueError::new(self, "Missing 'gas_price' for legacy transaction."));
};
let Some(gas_limit) = self.gas else {
return Err(ValueError::new(self, "Missing 'gas_limit' for legacy transaction."));
};
Ok(TxLegacy {
chain_id: self.chain_id,
nonce,
gas_price,
gas_limit,
to,
value: self.value.unwrap_or_default(),
input: self.input.into_input().unwrap_or_default(),
})
}
/// Build an EIP-1559 transaction.
///
/// Returns an error if required fields are missing. Use `complete_1559` to check if the
/// request can be built. If `chain_id` is absent, this uses mainnet chain ID `1`.
pub fn build_1559(self) -> Result<TxEip1559, ValueError<Self>> {
let Some(to) = self.to else {
return Err(ValueError::new(self, "Missing 'to' field for Eip1559 transaction."));
};
let Some(nonce) = self.nonce else {
return Err(ValueError::new(self, "Missing 'nonce' field for Eip1559 transaction."));
};
let Some(max_priority_fee_per_gas) = self.max_priority_fee_per_gas else {
return Err(ValueError::new(
self,
"Missing 'max_priority_fee_per_gas' field for Eip1559 transaction.",
));
};
let Some(max_fee_per_gas) = self.max_fee_per_gas else {
return Err(ValueError::new(
self,
"Missing 'max_fee_per_gas' field for Eip1559 transaction.",
));
};
let Some(gas_limit) = self.gas else {
return Err(ValueError::new(
self,
"Missing 'gas_limit' field for Eip1559 transaction.",
));
};
Ok(TxEip1559 {
chain_id: self.chain_id.unwrap_or(1),
nonce,
max_priority_fee_per_gas,
max_fee_per_gas,
gas_limit,
to,
value: self.value.unwrap_or_default(),
input: self.input.into_input().unwrap_or_default(),
access_list: self.access_list.unwrap_or_default(),
})
}
/// Build an EIP-2930 transaction.
///
/// Returns an error if required fields are missing. Use `complete_2930` to check if the
/// request can be built. If `chain_id` is absent, this uses mainnet chain ID `1`.
pub fn build_2930(self) -> Result<TxEip2930, ValueError<Self>> {
let Some(to) = self.to else {
return Err(ValueError::new(self, "Missing 'to' field for Eip2930 transaction."));
};
let Some(nonce) = self.nonce else {
return Err(ValueError::new(self, "Missing 'nonce' field for Eip2930 transaction."));
};
let Some(gas_price) = self.gas_price else {
return Err(ValueError::new(
self,
"Missing 'gas_price' field for Eip2930 transaction.",
));
};
let Some(gas_limit) = self.gas else {
return Err(ValueError::new(
self,
"Missing 'gas_limit' field for Eip2930 transaction.",
));
};
Ok(TxEip2930 {
chain_id: self.chain_id.unwrap_or(1),
nonce,
gas_price,
gas_limit,
to,
value: self.value.unwrap_or_default(),
input: self.input.into_input().unwrap_or_default(),
access_list: self.access_list.unwrap_or_default(),
})
}
/// Build an EIP-4844 transaction variant - either with or without sidecar.
///
/// Returns an error if required fields are missing. Use `complete_4844` to check if the
/// request can be built.
pub fn build_4844_variant(self) -> Result<TxEip4844Variant, ValueError<Self>> {
if self.sidecar.is_none() {
self.build_4844_without_sidecar().map(Into::into)
} else {
self.build_4844_with_sidecar().map(Into::into)
}
}
/// Build an EIP-4844 transaction without sidecar.
///
/// Returns an error if required consensus fields are missing. Unlike [`Self::complete_4844`],
/// this does not require the sidecar needed for a network-submittable transaction. If
/// `chain_id` is absent, this uses mainnet chain ID `1`.
pub fn build_4844_without_sidecar(self) -> Result<TxEip4844, ValueError<Self>> {
// First check 'to' field and type
let Some(to) = self.to else {
return Err(ValueError::new(self, "Missing 'to' field for Eip4844 transaction."));
};
let TxKind::Call(to_address) = to else {
return Err(ValueError::new(
Self { to: Some(to), ..self },
"The field `to` can only be of type TxKind::Call(Address). Please change it accordingly.",
));
};
// Check all required fields exist before extracting
if self.nonce.is_none() {
return Err(ValueError::new(self, "Missing 'nonce' field for Eip4844 transaction."));
}
if self.gas.is_none() {
return Err(ValueError::new(
self,
"Missing 'gas_limit' field for Eip4844 transaction.",
));
}
if self.max_fee_per_gas.is_none() {
return Err(ValueError::new(
self,
"Missing 'max_fee_per_gas' field for Eip4844 transaction.",
));
}
if self.max_priority_fee_per_gas.is_none() {
return Err(ValueError::new(
self,
"Missing 'max_priority_fee_per_gas' field for Eip4844 transaction.",
));
}
if self.blob_versioned_hashes.is_none() {
return Err(ValueError::new(
self,
"Missing 'blob_versioned_hashes' field for Eip4844 transaction.",
));
}
if self.max_fee_per_blob_gas.is_none() {
return Err(ValueError::new(
self,
"Missing 'max_fee_per_blob_gas' field for Eip4844 transaction.",
));
}
// Now extract all fields - safe to unwrap since we checked above
let nonce = self.nonce.unwrap();
let gas_limit = self.gas.unwrap();
let max_fee_per_gas = self.max_fee_per_gas.unwrap();
let max_priority_fee_per_gas = self.max_priority_fee_per_gas.unwrap();
let blob_versioned_hashes = self.blob_versioned_hashes.unwrap();
let max_fee_per_blob_gas = self.max_fee_per_blob_gas.unwrap();
Ok(TxEip4844 {
chain_id: self.chain_id.unwrap_or(1),
nonce,
gas_limit,
max_fee_per_gas,
max_priority_fee_per_gas,
to: to_address,
value: self.value.unwrap_or_default(),
access_list: self.access_list.unwrap_or_default(),
blob_versioned_hashes,
max_fee_per_blob_gas,
input: self.input.into_input().unwrap_or_default(),
})
}
/// Build an EIP-4844 transaction with sidecar.
///
/// Returns an error if required fields are missing. Use `complete_4844` to check if the
/// request can be built.
pub fn build_4844_with_sidecar(mut self) -> Result<TxEip4844WithSidecar, ValueError<Self>> {
self.populate_blob_hashes();
let Some(sidecar) = self.sidecar.take() else {
return Err(ValueError::new(self, "Missing 'sidecar' field for Eip4844 transaction."));
};
Ok(TxEip4844WithSidecar { sidecar, tx: self.build_4844_without_sidecar()? })
}
/// Build an EIP-7702 transaction.
///
/// Returns an error if required fields are missing. Use `complete_7702` to
/// check if the request can be built. If `chain_id` is absent, this uses mainnet chain ID `1`.
pub fn build_7702(self) -> Result<TxEip7702, ValueError<Self>> {
let Some(to) = self.to else {
return Err(ValueError::new(self, "Missing 'to' field for Eip7702 transaction."));
};
let Some(to_address) = to.to().copied() else {
return Err(ValueError::new(self, "The field `to` can only be of type TxKind::Call(Address). Please change it accordingly."));
};
let Some(nonce) = self.nonce else {
return Err(ValueError::new(self, "Missing 'nonce' field for Eip7702 transaction."));
};
let Some(gas_limit) = self.gas else {
return Err(ValueError::new(
self,
"Missing 'gas_limit' field for Eip7702 transaction.",
));
};
let Some(max_fee_per_gas) = self.max_fee_per_gas else {
return Err(ValueError::new(
self,
"Missing 'max_fee_per_gas' field for Eip7702 transaction.",
));
};
let Some(max_priority_fee_per_gas) = self.max_priority_fee_per_gas else {
return Err(ValueError::new(
self,
"Missing 'max_priority_fee_per_gas' field for Eip7702 transaction.",
));
};
Ok(TxEip7702 {
chain_id: self.chain_id.unwrap_or(1),
nonce,
gas_limit,
max_fee_per_gas,
max_priority_fee_per_gas,
to: to_address,
value: self.value.unwrap_or_default(),
input: self.input.into_input().unwrap_or_default(),
access_list: self.access_list.unwrap_or_default(),
authorization_list: self.authorization_list.unwrap_or_default(),
})
}
/// Ensures `to` field is set to an address which is required by:
/// - EIP 7702
/// - EIP 4844
const fn ensure_mandatory_to(&self) -> Result<(), ()> {
if !matches!(self.to, Some(TxKind::Call(_))) {
Err(())
} else {
Ok(())
}
}
fn check_reqd_fields(&self) -> Vec<&'static str> {
let mut missing = Vec::with_capacity(12);
if self.nonce.is_none() {
missing.push("nonce");
}
if self.gas.is_none() {
missing.push("gas_limit");
}
if self.to.is_none() {
missing.push("to");
}
missing
}
fn check_legacy_fields(&self, missing: &mut Vec<&'static str>) {
if self.gas_price.is_none() {
missing.push("gas_price");
}
}
fn check_1559_fields(&self, missing: &mut Vec<&'static str>) {
if self.max_fee_per_gas.is_none() {
missing.push("max_fee_per_gas");
}
if self.max_priority_fee_per_gas.is_none() {
missing.push("max_priority_fee_per_gas");
}
}
/// Trim field conflicts, based on the preferred type
///
/// This is used to ensure that the request will not be rejected by the
/// server due to conflicting keys, and should only be called before
/// submission via rpc.
pub fn trim_conflicting_keys(&mut self) {
match self.preferred_type() {
TxType::Legacy => {
self.max_fee_per_gas = None;
self.max_priority_fee_per_gas = None;
self.max_fee_per_blob_gas = None;
self.blob_versioned_hashes = None;
self.sidecar = None;
self.access_list = None;
self.authorization_list = None;
}
TxType::Eip2930 => {
self.max_fee_per_gas = None;
self.max_priority_fee_per_gas = None;
self.max_fee_per_blob_gas = None;
self.blob_versioned_hashes = None;
self.sidecar = None;
self.authorization_list = None;
}
TxType::Eip1559 => {
self.gas_price = None;
self.max_fee_per_blob_gas = None;
self.blob_versioned_hashes = None;
self.sidecar = None;
self.authorization_list = None;
}
TxType::Eip4844 => {
self.gas_price = None;
self.authorization_list = None;
}
TxType::Eip7702 => {
self.gas_price = None;
self.max_fee_per_blob_gas = None;
self.blob_versioned_hashes = None;
self.sidecar = None;
}
}
}
/// Returns the minimal transaction type this request can be converted into based on the fields
/// that are set.
///
/// Compared to [`Self::preferred_type`] which is intended for building and eventually signing
/// transactions and which prefers [`TxType::Eip1559`] if no conflicting fields are set, this
/// function is intended for deriving the minimal transaction type (legacy).
///
/// [`Self::minimal_tx_type`] is mostly relevant for the server-side, for example executing
/// `eth_calls` against historic state (pre [`TxType::Eip1559`]) and is used to configure the
/// EVM's transaction environment with the minimal settings.
/// Whereas [`Self::preferred_type`] is recommend for using client-side (filling a
/// [`TransactionRequest`] and signing the transaction [`TransactionRequest::build_typed_tx`]).
///
/// The type is determined in the following order:
/// - EIP-7702 if authorization_list is set
/// - EIP-4844 if blob data fields are set (sidecar or blob hashes)
/// - EIP-1559 if any EIP-1559 fee fields are set (max fee per gas, max priority fee)
/// - EIP-2930 if access_list is set
/// - Legacy otherwise
///
/// Note: `max_fee_per_blob_gas` alone does NOT indicate EIP-4844. This matches go-ethereum
/// behavior where only the presence of `blob_versioned_hashes` or sidecar determines if a
/// transaction is a blob transaction.
///
/// # Examples
///
/// ```rust
/// use alloy_consensus::TxType;
/// use alloy_eips::eip2930::AccessList;
/// use alloy_rpc_types_eth::TransactionRequest;
///
/// // EIP-7702 (highest priority)
/// let mut request = TransactionRequest::default();
/// request.authorization_list = Some(vec![]);
/// assert_eq!(request.minimal_tx_type(), TxType::Eip7702);
///
/// // max_fee_per_blob_gas alone does NOT make it EIP-4844
/// let request = TransactionRequest::default().max_fee_per_blob_gas(1000000000);
/// assert_eq!(request.minimal_tx_type(), TxType::Legacy); // NOT Eip4844!
///
/// // EIP-4844 with blob_versioned_hashes
/// let request = TransactionRequest { blob_versioned_hashes: Some(vec![]), ..Default::default() };
/// assert_eq!(request.minimal_tx_type(), TxType::Eip4844);
///
/// // EIP-1559 with max_fee_per_gas
/// let request = TransactionRequest::default().max_fee_per_gas(2000000000);
/// assert_eq!(request.minimal_tx_type(), TxType::Eip1559);
///
/// // EIP-1559 with max_priority_fee_per_gas
/// let request = TransactionRequest::default().max_priority_fee_per_gas(1000000000);
/// assert_eq!(request.minimal_tx_type(), TxType::Eip1559);
///
/// // EIP-2930 with access_list
/// let request = TransactionRequest::default().access_list(AccessList::default());
/// assert_eq!(request.minimal_tx_type(), TxType::Eip2930);
///
/// // Legacy (default fallback)
/// let request = TransactionRequest::default();
/// assert_eq!(request.minimal_tx_type(), TxType::Legacy);
///
/// // Priority example: EIP-4844 (with blob hashes) overrides EIP-1559
/// let request = TransactionRequest {
/// max_fee_per_gas: Some(2000000000),
/// blob_versioned_hashes: Some(vec![]),
/// ..Default::default()
/// };
/// assert_eq!(request.minimal_tx_type(), TxType::Eip4844);
/// ```
pub const fn minimal_tx_type(&self) -> TxType {
if self.authorization_list.is_some() {
TxType::Eip7702
} else if self.has_eip4844_blob_data() {
TxType::Eip4844
} else if self.has_eip1559_fields() {
TxType::Eip1559
} else if self.access_list.is_some() {
TxType::Eip2930
} else {
TxType::Legacy
}
}
/// Check this builder's preferred type, based on the fields that are set.
///
/// This function is intended for building and eventually signing transactions client-side.
/// Unlike [`Self::minimal_tx_type`] which returns the minimal required type, this function
/// prefers [`TxType::Eip1559`] when no conflicting fields are set.
///
/// Types are preferred as follows:
/// - EIP-7702 if authorization_list is set
/// - EIP-4844 if sidecar or blob_versioned_hashes is set
/// - EIP-2930 if access_list is set
/// - Legacy if gas_price is set and access_list is unset
/// - EIP-1559 in all other cases
///
/// Note: `max_fee_per_blob_gas` alone does NOT indicate EIP-4844. This matches go-ethereum
/// behavior where only the presence of `blob_versioned_hashes` or sidecar determines if a
/// transaction is a blob transaction.
///
/// # Examples
///
/// ```rust
/// use alloy_consensus::TxType;
/// use alloy_eips::eip2930::AccessList;
/// use alloy_rpc_types_eth::TransactionRequest;
///
/// // EIP-7702 (highest priority)
/// let mut request = TransactionRequest::default();
/// request.authorization_list = Some(vec![]);
/// assert_eq!(request.preferred_type(), TxType::Eip7702);
///
/// // EIP-4844 requires blob_versioned_hashes or sidecar, not just max_fee_per_blob_gas
/// let request = TransactionRequest::default().max_fee_per_blob_gas(1000000000);
/// assert_eq!(request.preferred_type(), TxType::Eip1559); // NOT Eip4844!
///
/// // EIP-4844 with blob_versioned_hashes
/// let request = TransactionRequest { blob_versioned_hashes: Some(vec![]), ..Default::default() };
/// assert_eq!(request.preferred_type(), TxType::Eip4844);
///
/// // EIP-2930 with both access_list and gas_price
/// let request =
/// TransactionRequest::default().access_list(AccessList::default()).gas_price(20000000000);
/// assert_eq!(request.preferred_type(), TxType::Eip2930);
///
/// // Legacy with only gas_price (no access_list)
/// let request = TransactionRequest::default().gas_price(20000000000);
/// assert_eq!(request.preferred_type(), TxType::Legacy);
///
/// // EIP-1559 as default for modern transactions
/// let request = TransactionRequest::default();
/// assert_eq!(request.preferred_type(), TxType::Eip1559);
///
/// // EIP-1559 even with access_list but no gas_price
/// let request = TransactionRequest::default().access_list(AccessList::default());
/// assert_eq!(request.preferred_type(), TxType::Eip1559);
/// ```
///
/// # Key Differences from [`Self::minimal_tx_type`]
///
/// ```rust
/// use alloy_consensus::TxType;
/// use alloy_eips::eip2930::AccessList;
/// use alloy_rpc_types_eth::TransactionRequest;
///
/// // Empty request - preferred_type prefers EIP-1559, minimal_tx_type falls back to Legacy
/// let request = TransactionRequest::default();
/// assert_eq!(request.preferred_type(), TxType::Eip1559); // Preferred for new txs
/// assert_eq!(request.minimal_tx_type(), TxType::Legacy); // Minimal requirement
///
/// // Access list only - different behavior
/// let request = TransactionRequest::default().access_list(AccessList::default());
/// assert_eq!(request.preferred_type(), TxType::Eip1559); // Still prefers EIP-1559
/// assert_eq!(request.minimal_tx_type(), TxType::Eip2930); // Minimal is EIP-2930
///
/// // Gas price only - both agree on Legacy
/// let request = TransactionRequest::default().gas_price(20000000000);
/// assert_eq!(request.preferred_type(), TxType::Legacy);
/// assert_eq!(request.minimal_tx_type(), TxType::Legacy);
/// ```
pub const fn preferred_type(&self) -> TxType {
if self.authorization_list.is_some() {
TxType::Eip7702
} else if self.has_eip4844_blob_data() {
TxType::Eip4844
} else if self.access_list.is_some() && self.gas_price.is_some() {
TxType::Eip2930
} else if self.gas_price.is_some() {
TxType::Legacy
} else {
TxType::Eip1559
}
}
/// Check if all necessary keys are present to build a transaction.
///
/// # Returns
///
/// - Ok(type) if all necessary keys are present to build the preferred type.
/// - Err((type, missing)) if some keys are missing to build the preferred type.
pub fn missing_keys(&self) -> Result<TxType, (TxType, Vec<&'static str>)> {
let pref = self.preferred_type();
if let Err(missing) = match pref {
TxType::Legacy => self.complete_legacy(),
TxType::Eip2930 => self.complete_2930(),
TxType::Eip1559 => self.complete_1559(),
TxType::Eip4844 => self.complete_4844(),
TxType::Eip7702 => self.complete_7702(),
} {
Err((pref, missing))
} else {
Ok(pref)
}
}
/// Check if all necessary keys are present to build a 4844 transaction,
/// returning a list of keys that are missing.
///
/// **NOTE:** `sidecar` must be present, even if `blob_versioned_hashes` is set.
pub fn complete_4844(&self) -> Result<(), Vec<&'static str>> {
let mut missing = self.check_reqd_fields();
self.check_1559_fields(&mut missing);
if self.to.is_some() && self.ensure_mandatory_to().is_err() {
missing.push("to");
}
if self.sidecar.is_none() {
missing.push("sidecar");
}
if self.max_fee_per_blob_gas.is_none() {
missing.push("max_fee_per_blob_gas");
}
if missing.is_empty() {
Ok(())
} else {
Err(missing)
}
}
/// Check if all necessary keys are present to build a 1559 transaction,
/// returning a list of keys that are missing.
pub fn complete_1559(&self) -> Result<(), Vec<&'static str>> {
let mut missing = self.check_reqd_fields();
self.check_1559_fields(&mut missing);
if missing.is_empty() {
Ok(())
} else {
Err(missing)
}
}
/// Check if all necessary keys are present to build a 2930 transaction,
/// returning a list of keys that are missing.
pub fn complete_2930(&self) -> Result<(), Vec<&'static str>> {
let mut missing = self.check_reqd_fields();
self.check_legacy_fields(&mut missing);
if self.access_list.is_none() {
missing.push("access_list");
}
if missing.is_empty() {
Ok(())
} else {
Err(missing)
}
}
/// Check if all necessary keys are present to build a 7702 transaction,
/// returning a list of keys that are missing.
pub fn complete_7702(&self) -> Result<(), Vec<&'static str>> {
let mut missing = self.check_reqd_fields();
self.check_1559_fields(&mut missing);
if self.to.is_some() && self.ensure_mandatory_to().is_err() {
missing.push("to");
}
if self.authorization_list.is_none() {
missing.push("authorization_list");
}
if missing.is_empty() {
Ok(())
} else {
Err(missing)
}
}
/// Check if all necessary keys are present to build a legacy transaction,
/// returning a list of keys that are missing.
pub fn complete_legacy(&self) -> Result<(), Vec<&'static str>> {
let mut missing = self.check_reqd_fields();
self.check_legacy_fields(&mut missing);
if missing.is_empty() {
Ok(())
} else {
Err(missing)
}
}
/// Return the tx type this request can be built as. Computed by checking
/// the preferred type, and then checking for completeness.
pub fn buildable_type(&self) -> Option<TxType> {
let pref = self.preferred_type();
match pref {
TxType::Legacy => self.complete_legacy().ok(),
TxType::Eip2930 => self.complete_2930().ok(),
TxType::Eip1559 => self.complete_1559().ok(),
TxType::Eip4844 => self.complete_4844().ok(),
TxType::Eip7702 => self.complete_7702().ok(),
}?;
Some(pref)
}
/// Build a [`TypedTransaction`]
///
/// When `Ok(...)` is returned, the `TypedTransaction` is guaranteed to be _complete_. Which
/// is to say, that it is signable, and the signed version can be sent to the network.
pub fn build_typed_tx(self) -> Result<TypedTransaction, Self> {
let Some(tx_type) = self.buildable_type() else {
return Err(self);
};
Ok(match tx_type {
TxType::Legacy => self.build_legacy().expect("checked)").into(),
TxType::Eip2930 => self.build_2930().expect("checked)").into(),
TxType::Eip1559 => self.build_1559().expect("checked)").into(),
// `sidecar` is a hard requirement since this must be a _sendable_ transaction.
TxType::Eip4844 => self.build_4844_with_sidecar().expect("checked)").into(),
TxType::Eip7702 => self.build_7702().expect("checked)").into(),
})
}
/// Build a [`TypedTransaction`].
///
/// When `Ok(...)` is returned, the `TypedTransaction` is not guaranteed to be _complete_,
/// only signable.
///
/// E.g. a particular case is when the transaction is of type `Eip4844` and the `sidecar` is not
/// set, in this case the transaction is not _complete_, i.e. it cannot be sent to the network
/// once signed. However, it can still be used to calculate the signing hash, signature of
/// the transaction, and transaction trie hash.
///
/// In case the requirement is to build a _complete_ transaction, use `build_typed_tx` instead.
pub fn build_consensus_tx(self) -> Result<TypedTransaction, BuildTransactionErr> {
match self.preferred_type() {
TxType::Legacy => self.build_legacy().map(Into::into),
TxType::Eip2930 => self.build_2930().map(Into::into),
TxType::Eip1559 => self.build_1559().map(Into::into),
TxType::Eip4844 => self.build_4844_variant().map(Into::into),
TxType::Eip7702 => self.build_7702().map(Into::into),
}
.map_err(|e| {
let error = e.to_string();
BuildTransactionErr { tx: e.into_value(), error }
})
}
/// Builds a signed typed transaction envelope for the `eth_simulateV1` endpoint with a dummy
/// signature. See also <https://github.com/ethereum/execution-apis/pull/484>
///
/// Returns an error if the transaction is not buildable, i.e. if the required fields are
/// missing. See [`Self::buildable_type`] for more information.
pub fn build_typed_simulate_transaction(
self,
) -> Result<alloy_consensus::EthereumTxEnvelope<TxEip4844>, ValueError<Self>> {
let tx = self
.build_consensus_tx()
.map_err(|err| ValueError::new(err.tx, "Transaction is not buildable"))?;
let signature = Signature::new(Default::default(), Default::default(), false);
Ok(tx.into_signed(signature).into())
}
}
impl TransactionBuilder4844 for TransactionRequest {
fn max_fee_per_blob_gas(&self) -> Option<u128> {
self.max_fee_per_blob_gas
}
fn set_max_fee_per_blob_gas(&mut self, max_fee_per_blob_gas: u128) {
self.max_fee_per_blob_gas = Some(max_fee_per_blob_gas)
}
fn blob_sidecar(&self) -> Option<&BlobTransactionSidecarVariant> {
self.sidecar.as_ref()
}
fn has_blob_sidecar(&self) -> bool {
self.sidecar.is_some()
}
fn set_blob_sidecar(&mut self, sidecar: BlobTransactionSidecarVariant) {
self.sidecar = Some(sidecar);
self.populate_blob_hashes();
}
}
impl TransactionBuilder7702 for TransactionRequest {
fn authorization_list(&self) -> Option<&Vec<SignedAuthorization>> {
self.authorization_list.as_ref()
}
fn set_authorization_list(&mut self, authorization_list: Vec<SignedAuthorization>) {
self.authorization_list = Some(authorization_list);
}
}
#[cfg(feature = "serde")]
impl From<TransactionRequest> for alloy_serde::WithOtherFields<TransactionRequest> {
fn from(tx: TransactionRequest) -> Self {
Self::new(tx)
}
}
impl AsRef<Self> for TransactionRequest {
fn as_ref(&self) -> &Self {
self
}
}
impl AsMut<Self> for TransactionRequest {
fn as_mut(&mut self) -> &mut Self {
self
}
}
impl From<Transaction> for TransactionRequest {
fn from(tx: Transaction) -> Self {
tx.into_recovered().into()
}
}
impl From<TxLegacy> for TransactionRequest {
fn from(tx: TxLegacy) -> Self {
let ty = tx.ty();
let TxLegacy { chain_id, nonce, gas_price, gas_limit, to, value, input } = tx;
Self {
to: if let TxKind::Call(to) = to { Some(to.into()) } else { None },
gas_price: Some(gas_price),
gas: Some(gas_limit),
value: Some(value),
input: input.into(),
nonce: Some(nonce),
chain_id,
transaction_type: Some(ty),
..Default::default()
}
}
}
impl From<TxEip2930> for TransactionRequest {
fn from(tx: TxEip2930) -> Self {
let ty = tx.ty();
let TxEip2930 { chain_id, nonce, gas_price, gas_limit, to, value, access_list, input } = tx;
Self {
to: if let TxKind::Call(to) = to { Some(to.into()) } else { None },
gas_price: Some(gas_price),
gas: Some(gas_limit),
value: Some(value),
input: input.into(),
nonce: Some(nonce),
chain_id: Some(chain_id),
access_list: Some(access_list),
transaction_type: Some(ty),
..Default::default()
}
}
}
impl From<TxEip1559> for TransactionRequest {
fn from(tx: TxEip1559) -> Self {
let ty = tx.ty();
let TxEip1559 {
chain_id,
nonce,
gas_limit,
max_fee_per_gas,
max_priority_fee_per_gas,
to,
value,
access_list,
input,
} = tx;
Self {
to: if let TxKind::Call(to) = to { Some(to.into()) } else { None },
max_fee_per_gas: Some(max_fee_per_gas),
max_priority_fee_per_gas: Some(max_priority_fee_per_gas),
gas: Some(gas_limit),
value: Some(value),
input: input.into(),
nonce: Some(nonce),
chain_id: Some(chain_id),
access_list: Some(access_list),
transaction_type: Some(ty),
..Default::default()
}
}
}
impl From<TxEip4844> for TransactionRequest {
fn from(tx: TxEip4844) -> Self {
let ty = tx.ty();
let TxEip4844 {
chain_id,
nonce,
gas_limit,
max_fee_per_gas,
max_priority_fee_per_gas,
to,
value,
access_list,
blob_versioned_hashes,
max_fee_per_blob_gas,
input,
} = tx;
Self {
to: Some(to.into()),
max_fee_per_blob_gas: Some(max_fee_per_blob_gas),
gas: Some(gas_limit),
max_fee_per_gas: Some(max_fee_per_gas),
max_priority_fee_per_gas: Some(max_priority_fee_per_gas),
value: Some(value),
input: input.into(),
nonce: Some(nonce),
chain_id: Some(chain_id),
access_list: Some(access_list),
blob_versioned_hashes: Some(blob_versioned_hashes),
transaction_type: Some(ty),
..Default::default()
}
}
}
impl From<TxEip4844WithSidecar> for TransactionRequest {
fn from(tx: TxEip4844WithSidecar) -> Self {
let TxEip4844WithSidecar { tx, sidecar } = tx;
let mut tx: Self = tx.into();
tx.sidecar = Some(sidecar);
tx
}
}
impl From<TxEip4844Variant> for TransactionRequest {
fn from(tx: TxEip4844Variant) -> Self {
match tx {
TxEip4844Variant::TxEip4844(tx) => tx.into(),
TxEip4844Variant::TxEip4844WithSidecar(tx) => {
let mut req: Self = tx.tx.into();
req.sidecar = Some(tx.sidecar);
req
}
}
}
}
impl From<TxEip7702> for TransactionRequest {
fn from(tx: TxEip7702) -> Self {
let ty = tx.ty();
let TxEip7702 {
chain_id,
nonce,
gas_limit,
max_fee_per_gas,
max_priority_fee_per_gas,
to,
value,
access_list,
authorization_list,
input,
} = tx;
Self {
to: Some(to.into()),
gas: Some(gas_limit),
max_fee_per_gas: Some(max_fee_per_gas),
max_priority_fee_per_gas: Some(max_priority_fee_per_gas),
value: Some(value),
input: input.into(),
nonce: Some(nonce),
chain_id: Some(chain_id),
access_list: Some(access_list),
authorization_list: Some(authorization_list),
transaction_type: Some(ty),
..Default::default()
}
}
}
impl From<TypedTransaction> for TransactionRequest {
fn from(tx: TypedTransaction) -> Self {
match tx {
TypedTransaction::Legacy(tx) => tx.into(),
TypedTransaction::Eip2930(tx) => tx.into(),
TypedTransaction::Eip1559(tx) => tx.into(),
TypedTransaction::Eip4844(tx) => tx.into(),
TypedTransaction::Eip7702(tx) => tx.into(),
}
}
}
impl<T: TransactionTrait> From<Recovered<T>> for TransactionRequest {
fn from(tx: Recovered<T>) -> Self {
Self::from_recovered_transaction(tx)
}
}
impl From<TxEnvelope> for TransactionRequest {
fn from(envelope: TxEnvelope) -> Self {
match envelope {
TxEnvelope::Legacy(tx) => {
#[cfg(feature = "k256")]
{
let from = tx.recover_signer().ok();
let tx: Self = tx.strip_signature().into();
if let Some(from) = from {
tx.from(from)
} else {
tx
}
}
#[cfg(not(feature = "k256"))]
{
tx.strip_signature().into()
}
}
TxEnvelope::Eip2930(tx) => {
#[cfg(feature = "k256")]
{
let from = tx.recover_signer().ok();
let tx: Self = tx.strip_signature().into();
if let Some(from) = from {
tx.from(from)
} else {
tx
}
}
#[cfg(not(feature = "k256"))]
{
tx.strip_signature().into()
}
}
TxEnvelope::Eip1559(tx) => {
#[cfg(feature = "k256")]
{
let from = tx.recover_signer().ok();
let tx: Self = tx.strip_signature().into();
if let Some(from) = from {
tx.from(from)
} else {
tx
}
}
#[cfg(not(feature = "k256"))]
{
tx.strip_signature().into()
}
}
TxEnvelope::Eip4844(tx) => {
#[cfg(feature = "k256")]
{
let from = tx.recover_signer().ok();
let tx: Self = tx.strip_signature().into();
if let Some(from) = from {
tx.from(from)
} else {
tx
}
}
#[cfg(not(feature = "k256"))]
{
tx.strip_signature().into()
}
}
TxEnvelope::Eip7702(tx) => {
#[cfg(feature = "k256")]
{
let from = tx.recover_signer().ok();
let tx: Self = tx.strip_signature().into();
if let Some(from) = from {
tx.from(from)
} else {
tx
}
}
#[cfg(not(feature = "k256"))]
{
tx.strip_signature().into()
}
}
}
}
}
/// Bincode-compatible [TransactionRequest] serde implementation.
#[cfg(all(feature = "serde", feature = "serde-bincode-compat"))]
pub(super) mod serde_bincode_compat {
use crate::TransactionInput;
use alloc::{borrow::Cow, vec::Vec};
use alloy_eips::eip2930::AccessList;
use alloy_primitives::{Address, Bytes, ChainId, TxKind, B256, U256};
use serde::{Deserialize, Deserializer, Serialize, Serializer};
use serde_with::{DeserializeAs, SerializeAs};
/// Bincode-compatible [super::TransactionRequest] serde implementation.
///
/// Intended to use with the [serde_with::serde_as] macro in the following way:
/// ```rust
/// use alloy_rpc_types_eth::{serde_bincode_compat, transaction, TransactionRequest};
/// use serde::{Deserialize, Serialize};
/// use serde_with::serde_as;
///
/// #[serde_as]
/// #[derive(Serialize, Deserialize)]
/// struct Data {
/// #[serde_as(as = "serde_bincode_compat::TransactionRequest")]
/// transaction: TransactionRequest,
/// }
/// ```
#[derive(Debug, Serialize, Deserialize)]
pub struct TransactionRequest<'a> {
/// The address of the transaction author.
pub from: Option<Address>,
/// The destination address of the transaction.
pub to: Option<TxKind>,
/// The legacy gas price.
pub gas_price: Option<u128>,
/// The max base fee per gas the sender is willing to pay.
pub max_fee_per_gas: Option<u128>,
/// The max priority fee per gas the sender is willing to pay, also called the miner tip.
pub max_priority_fee_per_gas: Option<u128>,
/// The max fee per blob gas for EIP-4844 blob transactions.
pub max_fee_per_blob_gas: Option<u128>,
/// The gas limit for the transaction.
pub gas: Option<u64>,
/// The value transferred in the transaction, in wei.
pub value: Option<U256>,
/// Transaction input.
pub input: Option<Cow<'a, Bytes>>,
/// Transaction data.
pub data: Option<Cow<'a, Bytes>>,
/// The nonce of the transaction.
pub nonce: Option<u64>,
/// The chain ID for the transaction.
pub chain_id: Option<ChainId>,
/// An EIP-2930 access list, which lowers cost for accessing accounts and storages in the list. See [EIP-2930](https://eips.ethereum.org/EIPS/eip-2930) for more information.
pub access_list: Option<Cow<'a, AccessList>>,
/// The EIP-2718 transaction type. See [EIP-2718](https://eips.ethereum.org/EIPS/eip-2718) for more information.
pub transaction_type: Option<u8>,
/// Blob versioned hashes for EIP-4844 transactions.
pub blob_versioned_hashes: Option<Cow<'a, Vec<B256>>>,
/// Blob sidecar for EIP-4844 transactions.
pub sidecar:
Option<alloy_eips::eip7594::serde_bincode_compat::BlobTransactionSidecarVariant<'a>>,
/// Authorization list for EIP-7702 transactions.
pub authorization_list:
Option<Vec<alloy_eips::eip7702::serde_bincode_compat::SignedAuthorization<'a>>>,
}
impl<'a> From<&'a super::TransactionRequest> for TransactionRequest<'a> {
fn from(value: &'a super::TransactionRequest) -> Self {
Self {
from: value.from,
to: value.to,
gas_price: value.gas_price,
max_fee_per_gas: value.max_fee_per_gas,
max_priority_fee_per_gas: value.max_priority_fee_per_gas,
max_fee_per_blob_gas: value.max_fee_per_blob_gas,
gas: value.gas,
value: value.value,
input: value.input.input.as_ref().map(Cow::Borrowed),
data: value.input.data.as_ref().map(Cow::Borrowed),
nonce: value.nonce,
chain_id: value.chain_id,
access_list: value.access_list.as_ref().map(Cow::Borrowed),
transaction_type: value.transaction_type,
blob_versioned_hashes: value.blob_versioned_hashes.as_ref().map(Cow::Borrowed),
sidecar: value.sidecar.as_ref().map(Into::into),
authorization_list: value
.authorization_list
.as_ref()
.map(|auths| auths.iter().map(Into::into).collect()),
}
}
}
impl<'a> From<TransactionRequest<'a>> for super::TransactionRequest {
fn from(value: TransactionRequest<'a>) -> Self {
Self {
from: value.from,
to: value.to,
gas_price: value.gas_price,
max_fee_per_gas: value.max_fee_per_gas,
max_priority_fee_per_gas: value.max_priority_fee_per_gas,
max_fee_per_blob_gas: value.max_fee_per_blob_gas,
gas: value.gas,
value: value.value,
input: TransactionInput {
input: value.input.map(Cow::into_owned),
data: value.data.map(Cow::into_owned),
},
nonce: value.nonce,
chain_id: value.chain_id,
access_list: value.access_list.map(|list| list.into_owned()),
transaction_type: value.transaction_type,
blob_versioned_hashes: value
.blob_versioned_hashes
.map(|hashes| hashes.into_owned()),
sidecar: value.sidecar.map(Into::into),
authorization_list: value
.authorization_list
.map(|list| list.into_iter().map(Into::into).collect()),
}
}
}
impl SerializeAs<super::TransactionRequest> for TransactionRequest<'_> {
fn serialize_as<S>(
source: &super::TransactionRequest,
serializer: S,
) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
TransactionRequest::from(source).serialize(serializer)
}
}
impl<'de> DeserializeAs<'de, super::TransactionRequest> for TransactionRequest<'de> {
fn deserialize_as<D>(deserializer: D) -> Result<super::TransactionRequest, D::Error>
where
D: Deserializer<'de>,
{
TransactionRequest::deserialize(deserializer).map(Into::into)
}
}
#[cfg(test)]
mod tests {
use crate::TransactionRequest;
use arbitrary::Arbitrary;
use bincode::config;
use rand::{rngs::StdRng, Rng, SeedableRng};
use serde::{Deserialize, Serialize};
use serde_with::serde_as;
use super::super::serde_bincode_compat;
#[test]
fn test_tx_request_bincode_roundtrip() {
#[serde_as]
#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
struct Data {
#[serde_as(as = "serde_bincode_compat::TransactionRequest")]
transaction: TransactionRequest,
}
let mut bytes = vec![0u8; 1024];
StdRng::seed_from_u64(0x3600_4844_7594_7702).fill(bytes.as_mut_slice());
let data = Data {
transaction: TransactionRequest::arbitrary(&mut arbitrary::Unstructured::new(
&bytes,
))
.unwrap(),
};
let encoded = bincode::serde::encode_to_vec(&data, config::legacy()).unwrap();
let (decoded, _) =
bincode::serde::decode_from_slice::<Data, _>(&encoded, config::legacy()).unwrap();
assert_eq!(decoded, data);
}
}
}
/// Represents how a [`TransactionRequest`] handles input/data fields.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub enum TransactionInputKind {
/// Only supports 'input' field
#[default]
Input,
/// Only supports 'data' field
Data,
/// Supports both 'input' and 'data' fields
Both,
}
impl TransactionInputKind {
/// Constructor for [`TransactionInputKind::Both`] variant.
pub const fn both() -> Self {
Self::Both
}
}
/// Error type for parsing `TransactionInputKind`
#[derive(Debug, Clone, PartialEq, Eq, thiserror::Error)]
#[error("invalid TransactionInputKind: '{input}', expected 'input', 'data', or 'both'")]
pub struct ParseTransactionInputKindError {
/// The invalid input string
input: String,
}
impl FromStr for TransactionInputKind {
type Err = ParseTransactionInputKindError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s.to_lowercase().as_str() {
"input" => Ok(Self::Input),
"data" => Ok(Self::Data),
"both" => Ok(Self::Both),
_ => Err(ParseTransactionInputKindError { input: s.to_string() }),
}
}
}
/// Helper type that supports both `data` and `input` fields that map to transaction input data.
///
/// This is done for compatibility reasons where older implementations used `data` instead of the
/// newer, recommended `input` field.
///
/// Serde accepts either spelling or both and does not validate that both values are equal.
/// [`Self::input`] and [`Self::into_input`] prefer `input` when both fields are present. Use
/// [`Self::unique_input`] or [`Self::try_into_unique_input`] to reject conflicting values.
#[cfg_attr(any(test, feature = "arbitrary"), derive(arbitrary::Arbitrary))]
#[derive(Clone, Debug, Default, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[doc(alias = "TxInput")]
pub struct TransactionInput {
/// Transaction data
#[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
pub input: Option<Bytes>,
/// Transaction data
///
/// This is the same as `input` but is used for backwards compatibility: <https://github.com/ethereum/go-ethereum/issues/15628>
#[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
pub data: Option<Bytes>,
}
impl TransactionInput {
/// Creates a new instance with the given input data.
pub const fn new(data: Bytes) -> Self {
Self::maybe_input(Some(data))
}
/// Creates a new instance with the given input data and sets both `input` and `data` fields to
/// the same value.
pub fn both(data: Bytes) -> Self {
Self::maybe_both(Some(data))
}
/// Creates a new instance with the given input data.
pub const fn maybe_input(input: Option<Bytes>) -> Self {
Self { input, data: None }
}
/// Creates a new instance with the given input data and sets both `input` and `data` fields to
/// the same value.
pub fn maybe_both(input: Option<Bytes>) -> Self {
Self { data: input.clone(), input }
}
/// Consumes the type and returns the optional input data.
///
/// If both fields are present, this returns `input` without checking whether `data` differs.
#[inline]
pub fn into_input(self) -> Option<Bytes> {
self.input.or(self.data)
}
/// Ensures that if either `input` or `data` is set, the `input` field contains the value.
///
/// This removes `data`. If both fields are present, the existing `input` value is retained
/// without checking whether `data` differs.
pub fn normalize_input(&mut self) {
let data = self.data.take();
// If input is None but data has a value, copy data to input
if self.input.is_none() {
self.input = data;
}
}
/// Consumes the type and returns it with [`Self::normalize_input`] applied
pub fn normalized_input(mut self) -> Self {
self.normalize_input();
self
}
/// Ensures that if either `data` or `input` is set, the `data` field contains the value.
///
/// This removes `input`. If both fields are present, the existing `data` value is retained
/// without checking whether `input` differs.
pub fn normalize_data(&mut self) {
let input = self.input.take();
if self.data.is_none() {
self.data = input;
}
}
/// Consumes the type and returns it with [`Self::normalize_data`] applied
pub fn normalized_data(mut self) -> Self {
self.normalize_data();
self
}
/// If only one field is set, this also sets the other field by with that value.
///
/// This is a noop if both fields are already set.
pub fn set_both(&mut self) {
if self.input.is_none() {
self.input = self.data.clone();
}
if self.data.is_none() {
self.data = self.input.clone();
}
}
/// Consumes the type and returns it with [`Self::set_both`] applied.
pub fn with_both(mut self) -> Self {
self.set_both();
self
}
/// Consumes the type and returns the optional input data.
///
/// Returns an error if both `data` and `input` fields are set and not equal.
#[inline]
pub fn try_into_unique_input(self) -> Result<Option<Bytes>, TransactionInputError> {
self.check_unique_input().map(|()| self.into_input())
}
/// Returns the optional input data.
///
/// If both fields are present, this returns `input` without checking whether `data` differs.
#[inline]
pub fn input(&self) -> Option<&Bytes> {
self.input.as_ref().or(self.data.as_ref())
}
/// Returns the optional input data.
///
/// Returns an error if both `data` and `input` fields are set and not equal.
#[inline]
pub fn unique_input(&self) -> Result<Option<&Bytes>, TransactionInputError> {
self.check_unique_input().map(|()| self.input())
}
fn check_unique_input(&self) -> Result<(), TransactionInputError> {
if let (Some(input), Some(data)) = (&self.input, &self.data) {
if input != data {
return Err(TransactionInputError::default());
}
}
Ok(())
}
}
impl From<Vec<u8>> for TransactionInput {
fn from(input: Vec<u8>) -> Self {
Self { input: Some(input.into()), data: None }
}
}
impl From<Bytes> for TransactionInput {
fn from(input: Bytes) -> Self {
Self { input: Some(input), data: None }
}
}
impl From<Option<Bytes>> for TransactionInput {
fn from(input: Option<Bytes>) -> Self {
Self { input, data: None }
}
}
/// Error thrown when a transaction request cannot be built into a transaction.
#[derive(Debug)]
pub struct BuildTransactionErr<T = TransactionRequest> {
/// Transaction request that failed to build into a transaction.
pub tx: T,
/// Error message.
pub error: String,
}
/// Error thrown when both `data` and `input` fields are set and not equal.
#[derive(Debug, Default, thiserror::Error)]
#[error("both \"data\" and \"input\" are set and not equal. Please use \"input\" to pass transaction call data")]
#[doc(alias = "TxInputError")]
#[non_exhaustive]
pub struct TransactionInputError;
/// Response type for `eth_fillTransaction`.
#[derive(Clone, Debug, PartialEq, Eq)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct FillTransaction<T = TypedTransaction> {
/// RLP-encoded signed transaction bytes.
pub raw: Bytes,
/// Filled transaction request with populated default values.
pub tx: T,
}
#[cfg(test)]
mod tests {
use super::*;
use crate::Authorization;
use alloy_consensus::BlobTransactionSidecarEip7594;
use alloy_primitives::b256;
#[cfg(feature = "serde")]
use alloy_serde::WithOtherFields;
use assert_matches::assert_matches;
use similar_asserts::assert_eq;
// <https://github.com/paradigmxyz/reth/issues/6670>
#[test]
#[cfg(feature = "serde")]
fn serde_from_to() {
let s = r#"{"from":"0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266", "to":"0x70997970C51812dc3A010C7d01b50e0d17dc79C8" }"#;
let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
assert!(req.input.check_unique_input().is_ok())
}
#[test]
#[cfg(feature = "serde")]
fn serde_tx_request() {
let s = r#"{"accessList":[],"data":"0x0902f1ac","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02"}"#;
let _req = serde_json::from_str::<TransactionRequest>(s).unwrap();
}
#[test]
#[cfg(feature = "serde")]
fn serde_unique_call_input() {
let s = r#"{"accessList":[],"data":"0x0902f1ac", "input":"0x0902f1ac","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02"}"#;
let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
assert!(req.input.try_into_unique_input().unwrap().is_some());
let s = r#"{"accessList":[],"data":"0x0902f1ac","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02"}"#;
let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
assert!(req.input.try_into_unique_input().unwrap().is_some());
let s = r#"{"accessList":[],"input":"0x0902f1ac","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02"}"#;
let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
assert!(req.input.try_into_unique_input().unwrap().is_some());
let s = r#"{"accessList":[],"data":"0x0902f1ac", "input":"0x0902f1","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02"}"#;
let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
assert!(req.input.try_into_unique_input().is_err());
}
#[test]
#[cfg(feature = "serde")]
fn serde_tx_request_additional_fields() {
let s = r#"{"accessList":[],"data":"0x0902f1ac","to":"0xa478c2975ab1ea89e8196811f51a7b7ade33eb11","type":"0x02","sourceHash":"0xbf7e331f7f7c1dd2e05159666b3bf8bc7a8a3a9eb1d518969eab529dd9b88c1a"}"#;
let req = serde_json::from_str::<WithOtherFields<TransactionRequest>>(s).unwrap();
assert_eq!(
req.other.get_deserialized::<B256>("sourceHash").unwrap().unwrap(),
b256!("bf7e331f7f7c1dd2e05159666b3bf8bc7a8a3a9eb1d518969eab529dd9b88c1a")
);
}
#[test]
#[cfg(feature = "serde")]
fn serde_tx_chain_id_field() {
let chain_id: ChainId = 12345678;
let chain_id_as_num = format!(r#"{{"chainId": {chain_id} }}"#);
let req1 = serde_json::from_str::<TransactionRequest>(&chain_id_as_num).unwrap();
assert_eq!(req1.chain_id.unwrap(), chain_id);
let chain_id_as_hex = format!(r#"{{"chainId": "0x{chain_id:x}" }}"#);
let req2 = serde_json::from_str::<TransactionRequest>(&chain_id_as_hex).unwrap();
assert_eq!(req2.chain_id.unwrap(), chain_id);
}
#[test]
#[cfg(feature = "serde")]
fn serde_empty() {
let tx = TransactionRequest::default();
let serialized = serde_json::to_string(&tx).unwrap();
assert_eq!(serialized, "{}");
}
#[test]
#[cfg(feature = "serde")]
fn serde_tx_with_sidecar() {
// Create a sidecar with some data.
let s = r#"{
"to": "0x70997970c51812dc3a010c7d01b50e0d17dc79c8",
"maxFeePerGas": "0x77359401",
"maxPriorityFeePerGas": "0x1",
"maxFeePerBlobGas": "0x77359400",
"nonce": "0x0",
"blobVersionedHashes": [
"0x01b0761f87b081d5cf10757ccc89f12be355c70e2e29df288b65b30710dcbcd1"
],
"blobs": [
"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000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],
"commitments": [
"0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
],
"proofs": [
"0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
]
}
"#;
let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
assert!(req.sidecar.is_some());
let _serialized = serde_json::to_string_pretty(&req).unwrap();
let s = r#"{
"to": "0x70997970c51812dc3a010c7d01b50e0d17dc79c8",
"maxFeePerGas": "0x77359401",
"maxPriorityFeePerGas": "0x1",
"maxFeePerBlobGas": "0x77359400",
"nonce": "0x0",
"blobVersionedHashes": [
"0x01b0761f87b081d5cf10757ccc89f12be355c70e2e29df288b65b30710dcbcd1"
],
"blobs": [
"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000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],
"commitments": [
"0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
]
}
"#; // `proofs` field is missing.
let req = serde_json::from_str::<TransactionRequest>(s).unwrap();
assert!(req.sidecar.is_none()); // Sidecar won't be deserialized.
}
#[test]
fn build_consensus_tx_works() {
// Legacy
{
// Positive case
let legacy_gas_limit = 123456;
let legacy_request = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
gas_price: Some(1234),
nonce: Some(57),
gas: Some(legacy_gas_limit),
..Default::default()
};
let maybe_legacy_tx: Result<TypedTransaction, _> = legacy_request.build_consensus_tx();
assert_matches!(maybe_legacy_tx, Ok(TypedTransaction::Legacy(TxLegacy { gas_limit, .. })) if gas_limit == legacy_gas_limit);
// Negative case
let legacy_request_missing_gas = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
gas_price: Some(1234),
nonce: Some(57),
..Default::default()
};
let maybe_legacy_tx: Result<TypedTransaction, _> =
legacy_request_missing_gas.build_consensus_tx();
assert_matches!(maybe_legacy_tx, Err(..));
}
// EIP-2930
{
// Positive case
let access_list = AccessList(vec![alloy_eips::eip2930::AccessListItem {
address: Address::repeat_byte(0x01),
storage_keys: vec![B256::repeat_byte(0x02), B256::repeat_byte(0x04)],
}]);
let eip2930_request = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
gas_price: Some(1234),
nonce: Some(57),
gas: Some(123456),
access_list: Some(access_list.clone()),
..Default::default()
};
let maybe_eip2930_tx: Result<TypedTransaction, _> =
eip2930_request.build_consensus_tx();
assert_matches!(maybe_eip2930_tx, Ok(TypedTransaction::Eip2930(TxEip2930 { access_list, .. })) if access_list == access_list);
// Negative case
let eip2930_request_missing_nonce = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
gas_price: Some(1234),
gas: Some(123456),
access_list: Some(access_list),
..Default::default()
};
let maybe_eip2930_tx: Result<TypedTransaction, _> =
eip2930_request_missing_nonce.build_consensus_tx();
assert_matches!(maybe_eip2930_tx, Err(..));
}
// EIP-1559
{
// Positive case
let max_prio_fee = 987;
let eip1559_request = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(max_prio_fee),
nonce: Some(57),
gas: Some(123456),
..Default::default()
};
let maybe_eip1559_tx: Result<TypedTransaction, _> =
eip1559_request.build_consensus_tx();
assert_matches!(maybe_eip1559_tx, Ok(TypedTransaction::Eip1559(TxEip1559 { max_priority_fee_per_gas, .. })) if max_priority_fee_per_gas == max_prio_fee);
// Negative case
let eip1559_request_missing_max_fee = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
max_priority_fee_per_gas: Some(max_prio_fee),
nonce: Some(57),
gas: Some(123456),
..Default::default()
};
let maybe_eip1559_tx: Result<TypedTransaction, _> =
eip1559_request_missing_max_fee.build_consensus_tx();
assert_matches!(maybe_eip1559_tx, Err(..));
}
// EIP-4844 without sidecar
{
// Positive case
let max_fee_per_blob_gas = 13579;
let eip4844_request = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(678),
nonce: Some(57),
gas: Some(123456),
max_fee_per_blob_gas: Some(max_fee_per_blob_gas),
blob_versioned_hashes: Some(vec![B256::repeat_byte(0xAB)]),
..Default::default()
};
let maybe_eip4844_tx: Result<TypedTransaction, _> =
eip4844_request.build_consensus_tx();
assert_matches!(maybe_eip4844_tx, Ok(TypedTransaction::Eip4844(TxEip4844Variant::TxEip4844(TxEip4844 { max_fee_per_blob_gas, .. }))) if max_fee_per_blob_gas == max_fee_per_blob_gas);
// Negative case
let eip4844_request_incorrect_to = TransactionRequest {
to: Some(TxKind::Create),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(678),
nonce: Some(57),
gas: Some(123456),
max_fee_per_blob_gas: Some(max_fee_per_blob_gas),
blob_versioned_hashes: Some(vec![B256::repeat_byte(0xAB)]),
..Default::default()
};
let maybe_eip4844_tx: Result<TypedTransaction, _> =
eip4844_request_incorrect_to.build_consensus_tx();
assert_matches!(maybe_eip4844_tx, Err(..));
}
// EIP-4844 with sidecar
{
use alloy_eips::eip4844::{Blob, BlobTransactionSidecar};
// Positive case
let sidecar =
BlobTransactionSidecar::new(vec![Blob::repeat_byte(0xFA)], Vec::new(), Vec::new());
let eip4844_request = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(678),
nonce: Some(57),
gas: Some(123456),
max_fee_per_blob_gas: Some(13579),
blob_versioned_hashes: Some(vec![B256::repeat_byte(0xAB)]),
sidecar: Some(sidecar.into()),
..Default::default()
};
let maybe_eip4844_tx: Result<TypedTransaction, _> =
eip4844_request.build_consensus_tx();
assert_matches!(maybe_eip4844_tx,
Ok(TypedTransaction::Eip4844(TxEip4844Variant::TxEip4844WithSidecar(TxEip4844WithSidecar {
sidecar, .. }))) if sidecar == sidecar);
// with create to
let sidecar =
BlobTransactionSidecar::new(vec![Blob::repeat_byte(0xFA)], Vec::new(), Vec::new());
let eip4844_request = TransactionRequest {
to: Some(TxKind::Create),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(678),
nonce: Some(57),
gas: Some(123456),
max_fee_per_blob_gas: Some(13579),
blob_versioned_hashes: Some(vec![B256::repeat_byte(0xAB)]),
sidecar: Some(sidecar.clone().into()),
..Default::default()
};
let maybe_eip4844_tx: Result<TypedTransaction, _> =
eip4844_request.build_consensus_tx();
assert_matches!(maybe_eip4844_tx, Err(..));
// Negative case
let eip4844_request_incorrect_to = TransactionRequest {
to: Some(TxKind::Create),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(678),
nonce: Some(57),
gas: Some(123456),
max_fee_per_blob_gas: Some(13579),
blob_versioned_hashes: Some(vec![B256::repeat_byte(0xAB)]),
sidecar: Some(sidecar.into()),
..Default::default()
};
let maybe_eip4844_tx: Result<TypedTransaction, _> =
eip4844_request_incorrect_to.build_consensus_tx();
assert_matches!(maybe_eip4844_tx, Err(..));
}
// EIP-4844 with EIP-7594 sidecar
{
use alloy_eips::eip4844::Blob;
// Positive case
let sidecar = BlobTransactionSidecarEip7594::new(
vec![Blob::repeat_byte(0xFA)],
Vec::new(),
Vec::new(),
);
let eip4844_request = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(678),
nonce: Some(57),
gas: Some(123456),
max_fee_per_blob_gas: Some(13579),
blob_versioned_hashes: Some(vec![B256::repeat_byte(0xAB)]),
sidecar: Some(sidecar.into()),
..Default::default()
};
// this panics because EIP-7594 sidecar is ignored
eip4844_request.build_consensus_tx().unwrap();
}
// EIP-7702
{
let eip4844_request = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(678),
nonce: Some(57),
gas: Some(123456),
max_fee_per_blob_gas: Some(13579),
authorization_list: Some(vec![SignedAuthorization::new_unchecked(
Authorization {
chain_id: Default::default(),
address: Default::default(),
nonce: 0,
},
0,
U256::ZERO,
U256::ZERO,
)]),
..Default::default()
};
let maybe_eip4844_tx: Result<TypedTransaction, _> =
eip4844_request.build_consensus_tx();
assert_matches!(maybe_eip4844_tx, Ok(TypedTransaction::Eip7702(_)));
// as create tx
let eip4844_request = TransactionRequest {
to: Some(TxKind::Create),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(678),
nonce: Some(57),
gas: Some(123456),
max_fee_per_blob_gas: Some(13579),
authorization_list: Some(vec![SignedAuthorization::new_unchecked(
Authorization {
chain_id: Default::default(),
address: Default::default(),
nonce: 0,
},
0,
U256::ZERO,
U256::ZERO,
)]),
..Default::default()
};
let maybe_eip4844_tx: Result<TypedTransaction, _> =
eip4844_request.build_consensus_tx();
assert_matches!(maybe_eip4844_tx, Err(..));
}
}
#[test]
fn build_typed_simulate_transaction_builds_eip1559() {
let request = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(678),
nonce: Some(57),
gas: Some(123456),
..Default::default()
};
let envelope = request.build_typed_simulate_transaction().unwrap();
assert_matches!(envelope, alloy_consensus::EthereumTxEnvelope::Eip1559(_));
}
#[test]
fn build_typed_simulate_transaction_allows_4844_without_sidecar() {
let blob_hash = B256::repeat_byte(0xAB);
let request = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(678),
nonce: Some(57),
gas: Some(123456),
max_fee_per_blob_gas: Some(13579),
blob_versioned_hashes: Some(vec![blob_hash]),
..Default::default()
};
let envelope = request.build_typed_simulate_transaction().unwrap();
assert_matches!(
envelope,
alloy_consensus::EthereumTxEnvelope::Eip4844(signed)
if signed.tx().blob_versioned_hashes == vec![blob_hash]
);
}
#[test]
fn build_typed_simulate_transaction_builds_4844_with_sidecar() {
let request = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
max_fee_per_gas: Some(1234),
max_priority_fee_per_gas: Some(678),
nonce: Some(57),
gas: Some(123456),
max_fee_per_blob_gas: Some(13579),
sidecar: Some(alloy_consensus::BlobTransactionSidecar::default().into()),
..Default::default()
};
let envelope = request.build_typed_simulate_transaction().unwrap();
assert_matches!(
envelope,
alloy_consensus::EthereumTxEnvelope::Eip4844(signed)
if signed.tx().blob_versioned_hashes.is_empty()
);
}
#[test]
fn build_typed_simulate_transaction_errors_if_not_buildable() {
let request = TransactionRequest {
to: Some(TxKind::Call(Address::repeat_byte(0xDE))),
max_fee_per_gas: Some(1234),
nonce: Some(57),
gas: Some(123456),
..Default::default()
};
assert!(request.build_typed_simulate_transaction().is_err());
}
#[test]
fn deserde_auth_request() {
let s = r#" {
"to": "0xE854C84cD68fC434cB3B0042c29235D452cAD977",
"value": "0x2386f26fc10000",
"data": "0x97b2dcb9000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000000000000000000000000b187803a4ac9c5a498e470aab82de203f5870ab872cfa6000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001200000000000000000000000000000000000000000000000000000000000000140000000000000000000000000000249f000000000000000000000000000014c0800000000000000000000000000000000000000000000000000000000000154b4000000000000000000000000002cf2770000000000000000000000000000003200000000000000000000000000000000000000000000000000000000000002600000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000e4e9ae5c53000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000078833589fcd6edb6e08f4c7c32d4f71b54bda029130000000000000000000000000000000000000000000000000000000000000000a9059cbb0000000000000000000000009c2a029612a98264e34ecf3ad8811c4e4a48316f0000000000000000000000000000000000000000000000000000000000001b9b0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000074e854c84cd68fc434cb3b0042c29235d452cad97700000000000000000000000000004e2000000000000000000000000000004e200000000000000000000000000000000000000000000000000000000000043238000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000164177eee00b973503b11a308c1588a727a359c4709fec51aa9177502497da881f7c2b1a4b90000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006825c11f00000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000001cff5e8e759c0aebbd4480700377fa5b3fc836d646b6882e2b20df2eb9dfed80e0000000000000000000000000000000000000000000000000000000000000041bb5fa08fdd3834010b589ee27c0918fb37271ee0825c81ab7559b5b97632bc1e14d81ce5cb28e53a6c602bc76c707794a43e5beeba5eb32903f81deb06cbbac61b00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"from": "0x4b19129EA58431A06D01054f69AcAe5de50633b6",
"authorizationList": [
{
"chainId": "0x2105",
"address": "0x000000004F43C49e93C970E84001853a70923B03",
"nonce": "0x0",
"r": "0xb3fdb76993ec6787313ab8b54129200032dfb9ce683fa9f7693129421e6a3185",
"s": "0x210b3350107a5687b532a346a90e7cc9a799b995743e2b79698bedba7bd779ae",
"v": "0x1b",
"yParity": "0x0"
}
]
}"#;
let req: TransactionRequest = serde_json::from_str(s).unwrap();
let auths = req.authorization_list.unwrap();
assert_eq!(auths.len(), 1);
assert_eq!(auths[0].y_parity(), 0);
}
#[test]
fn set_blob_sidecar_7594_populates_versioned_hashes() {
use alloy_eips::eip4844::{kzg_to_versioned_hash, Blob, Bytes48};
// Create a sidecar with a known commitment
let commitment = Bytes48::repeat_byte(0x42);
let sidecar = BlobTransactionSidecarEip7594::new(
vec![Blob::repeat_byte(0xFA)],
vec![commitment],
vec![Bytes48::repeat_byte(0x11)], // cell proof
);
// Calculate expected versioned hash from the commitment
let expected_hash = kzg_to_versioned_hash(commitment.as_slice());
// Create a transaction request and set the sidecar
let mut tx_request = TransactionRequest::default();
assert!(tx_request.blob_versioned_hashes.is_none());
tx_request.set_blob_sidecar_7594(sidecar);
// Verify that blob_versioned_hashes was populated
assert!(tx_request.blob_versioned_hashes.is_some());
let hashes = tx_request.blob_versioned_hashes.unwrap();
assert_eq!(hashes.len(), 1);
assert_eq!(hashes[0], expected_hash);
}
}