Enum reth_primitives::transaction::Transaction

pub enum Transaction {
    Legacy(TxLegacy),
    Eip2930(TxEip2930),
    Eip1559(TxEip1559),
    Eip4844(TxEip4844),
    Eip7702(TxEip7702),
    Deposit(TxDeposit),
}

A raw transaction.

Transaction types were introduced in EIP-2718.

Variants

Legacy(TxLegacy)

Legacy transaction (type 0x0).

Traditional Ethereum transactions, containing parameters nonce, gasPrice, gasLimit, to, value, data, v, r, and s.

These transactions do not utilize access lists nor do they incorporate EIP-1559 fee market changes.

Eip2930(TxEip2930)

Transaction with an AccessList (EIP-2930), type 0x1.

The accessList specifies an array of addresses and storage keys that the transaction plans to access, enabling gas savings on cross-contract calls by pre-declaring the accessed contract and storage slots.

Eip1559(TxEip1559)

A transaction with a priority fee (EIP-1559), type 0x2.

Unlike traditional transactions, EIP-1559 transactions use an in-protocol, dynamically changing base fee per gas, adjusted at each block to manage network congestion.

• maxPriorityFeePerGas, specifying the maximum fee above the base fee the sender is willing to pay
• maxFeePerGas, setting the maximum total fee the sender is willing to pay.

The base fee is burned, while the priority fee is paid to the miner who includes the transaction, incentivizing miners to include transactions with higher priority fees per gas.

Eip4844(TxEip4844)

Shard Blob Transactions (EIP-4844), type 0x3.

Shard Blob Transactions introduce a new transaction type called a blob-carrying transaction to reduce gas costs. These transactions are similar to regular Ethereum transactions but include additional data called a blob.

Blobs are larger (~125 kB) and cheaper than the current calldata, providing an immutable and read-only memory for storing transaction data.

EIP-4844, also known as proto-danksharding, implements the framework and logic of danksharding, introducing new transaction formats and verification rules.

Eip7702(TxEip7702)

EOA Set Code Transactions (EIP-7702), type 0x4.

EOA Set Code Transactions give the ability to temporarily set contract code for an EOA for a single transaction. This allows for temporarily adding smart contract functionality to the EOA.

Deposit(TxDeposit)

Available on crate feature optimism only.

Optimism deposit transaction.

Implementations

impl Transaction

pub fn signature_hash(&self) -> B256

Heavy operation that return signature hash over rlp encoded transaction. It is only for signature signing or signer recovery.

pub const fn chain_id(&self) -> Option<u64>

Get chain_id.

pub fn set_chain_id(&mut self, chain_id: u64)

Sets the transaction’s chain id to the provided value.

pub const fn kind(&self) -> TxKind

Gets the transaction’s TxKind, which is the address of the recipient or TxKind::Create if the transaction is a contract creation.

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

Get the transaction’s address of the contract that will be called, or the address that will receive the transfer.

Returns None if this is a CREATE transaction.

pub const fn tx_type(&self) -> TxType

Get the transaction’s type

pub const fn value(&self) -> U256

Gets the transaction’s value field.

pub const fn nonce(&self) -> u64

Get the transaction’s nonce.

pub const fn access_list(&self) -> Option<&AccessList>

Returns the AccessList of the transaction.

Returns None for legacy transactions.

pub fn authorization_list(&self) -> Option<&[SignedAuthorization]>

Returns the SignedAuthorization list of the transaction.

Returns None if this transaction is not EIP-7702.

pub const fn gas_limit(&self) -> u64

Get the gas limit of the transaction.

pub const fn is_dynamic_fee(&self) -> bool

Returns true if the tx supports dynamic fees

pub const fn max_fee_per_gas(&self) -> u128

Max fee per gas for eip1559 transaction, for legacy transactions this is gas_price.

This is also commonly referred to as the “Gas Fee Cap” (GasFeeCap).

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

Max priority fee per gas for eip1559 transaction, for legacy and eip2930 transactions this is None

This is also commonly referred to as the “Gas Tip Cap” (GasTipCap).

pub fn blob_versioned_hashes(&self) -> Option<Vec<B256>>

Blob versioned hashes for eip4844 transaction, for legacy, eip1559, eip2930 and eip7702 transactions this is None

This is also commonly referred to as the “blob versioned hashes” (BlobVersionedHashes).

pub const fn max_fee_per_blob_gas(&self) -> Option<u128>

Max fee per blob gas for eip4844 transaction TxEip4844.

Returns None for non-eip4844 transactions.

This is also commonly referred to as the “Blob Gas Fee Cap” (BlobGasFeeCap).

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

Returns the blob gas used for all blobs of the EIP-4844 transaction if it is an EIP-4844 transaction.

This is the number of blobs times the DATA_GAS_PER_BLOB a single blob consumes.

pub const fn priority_fee_or_price(&self) -> u128

Return the max priority fee per gas if the transaction is an EIP-1559 transaction, and otherwise return the gas price.

Warning

This is different than the max_priority_fee_per_gas method, which returns None for non-EIP-1559 transactions.

pub const fn effective_gas_price(&self, base_fee: Option<u64>) -> u128

Returns the effective gas price for the given base fee.

If the transaction is a legacy or EIP2930 transaction, the gas price is returned.

pub fn effective_tip_per_gas(&self, base_fee: Option<u64>) -> Option<u128>

Returns the effective miner gas tip cap (gasTipCap) for the given base fee: min(maxFeePerGas - baseFee, maxPriorityFeePerGas)

If the base fee is None, the max_priority_fee_per_gas, or gas price for non-EIP1559 transactions is returned.

Returns None if the basefee is higher than the Transaction::max_fee_per_gas.

pub const fn input(&self) -> &Bytes

Get the transaction’s input field.

pub const fn source_hash(&self) -> Option<B256>

Available on crate feature optimism only.

Returns the source hash of the transaction, which uniquely identifies its source. If not a deposit transaction, this will always return None.

pub const fn mint(&self) -> Option<u128>

Available on crate feature optimism only.

Returns the amount of ETH locked up on L1 that will be minted on L2. If the transaction is not a deposit transaction, this will always return None.

pub const fn is_system_transaction(&self) -> bool

Available on crate feature optimism only.

Returns whether or not the transaction is a system transaction. If the transaction is not a deposit transaction, this will always return false.

pub const fn is_deposit(&self) -> bool

Available on crate feature optimism only.

Returns whether or not the transaction is an Optimism Deposited transaction.

pub fn encode_without_signature(&self, out: &mut dyn BufMut)

This encodes the transaction without the signature, and is only suitable for creating a hash intended for signing.

pub fn encode_with_signature( &self, signature: &Signature, out: &mut dyn BufMut, with_header: bool, )

Inner encoding function that is used for both rlp [Encodable] trait and for calculating hash that for eip2718 does not require rlp header

pub fn set_gas_limit(&mut self, gas_limit: u64)

This sets the transaction’s gas limit.

pub fn set_nonce(&mut self, nonce: u64)

This sets the transaction’s nonce.

pub fn set_value(&mut self, value: U256)

This sets the transaction’s value.

pub fn set_input(&mut self, input: Bytes)

This sets the transaction’s input field.

pub fn size(&self) -> usize

Calculates a heuristic for the in-memory size of the Transaction.

pub const fn is_legacy(&self) -> bool

Returns true if the transaction is a legacy transaction.

pub const fn is_eip2930(&self) -> bool

Returns true if the transaction is an EIP-2930 transaction.

pub const fn is_eip1559(&self) -> bool

Returns true if the transaction is an EIP-1559 transaction.

pub const fn is_eip4844(&self) -> bool

Returns true if the transaction is an EIP-4844 transaction.

pub const fn is_eip7702(&self) -> bool

Returns true if the transaction is an EIP-7702 transaction.

pub const fn as_legacy(&self) -> Option<&TxLegacy>

Returns the TxLegacy variant if the transaction is a legacy transaction.

pub const fn as_eip2930(&self) -> Option<&TxEip2930>

Returns the TxEip2930 variant if the transaction is an EIP-2930 transaction.

pub const fn as_eip1559(&self) -> Option<&TxEip1559>

Returns the TxEip1559 variant if the transaction is an EIP-1559 transaction.

pub const fn as_eip4844(&self) -> Option<&TxEip4844>

Returns the TxEip4844 variant if the transaction is an EIP-4844 transaction.

pub const fn as_eip7702(&self) -> Option<&TxEip7702>

Returns the TxEip7702 variant if the transaction is an EIP-7702 transaction.

Trait Implementations

impl<'a> Arbitrary<'a> for Transaction

Available on crate feature arbitrary only.

fn arbitrary(u: &mut Unstructured<'a>) -> Result<Self>

Generate an arbitrary value of Self from the given unstructured data.

fn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Self, Error>

Generate an arbitrary value of Self from the entirety of the given unstructured data.

fn size_hint(depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

impl AsRef<Transaction> for TransactionSigned

fn as_ref(&self) -> &Transaction

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<Transaction> for TransactionSignedNoHash

fn as_ref(&self) -> &Transaction

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<Transaction> for TransactionSignedVariant

fn as_ref(&self) -> &Transaction

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Transaction

fn clone(&self) -> Transaction

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Compact for Transaction

Available on crate feature reth-codec only.

fn to_compact<B>(&self, buf: &mut B) -> usize

where B: BufMut + AsMut<[u8]>,

Takes a buffer which can be written to. Ideally, it returns the length written to.

fn from_compact(buf: &[u8], identifier: usize) -> (Self, &[u8])

Takes a buffer which can be read from. Returns the object and buf with its internal cursor advanced (eg..advance(len)).

fn specialized_to_compact<B>(&self, buf: &mut B) -> usize

where B: BufMut + AsMut<[u8]>,

“Optional”: If there’s no good reason to use it, don’t.

fn specialized_from_compact(buf: &[u8], len: usize) -> (Self, &[u8])

“Optional”: If there’s no good reason to use it, don’t.

impl Debug for Transaction

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

Formats the value using the given formatter.

impl Default for Transaction

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Transaction

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Encodable for Transaction

fn encode(&self, out: &mut dyn BufMut)

This encodes the transaction without the signature, and is only suitable for creating a hash intended for signing.

fn length(&self) -> usize

Returns the length of the encoding of this type in bytes.

impl From<TxEip1559> for Transaction

fn from(tx: TxEip1559) -> Self

Converts to this type from the input type.

impl From<TxEip2930> for Transaction

fn from(tx: TxEip2930) -> Self

Converts to this type from the input type.

impl From<TxEip4844> for Transaction

fn from(tx: TxEip4844) -> Self

Converts to this type from the input type.

impl From<TxEip7702> for Transaction

fn from(tx: TxEip7702) -> Self

Converts to this type from the input type.

impl From<TxLegacy> for Transaction

fn from(tx: TxLegacy) -> Self

Converts to this type from the input type.

impl Hash for Transaction

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Transaction

fn eq(&self, other: &Transaction) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Transaction

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<WithOtherFields<Transaction>> for Transaction

Available on crate feature alloy-compat only.

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(tx: WithOtherFields<Transaction>) -> Result<Self, Self::Error>

Performs the conversion.

impl Eq for Transaction

impl StructuralPartialEq for Transaction

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 240 bytes

Size for each variant:

• Legacy: 144 bytes
• Eip2930: 160 bytes
• Eip1559: 176 bytes
• Eip4844: 224 bytes
• Eip7702: 208 bytes
• Deposit: 192 bytes