TransactionsManager

reth_network::transactions

Struct TransactionsManager 

Source 
pub struct TransactionsManager<Pool, N: NetworkPrimitives = EthNetworkPrimitives, PBundle: TransactionPolicies = NetworkPolicies<TransactionPropagationKind, StrictEthAnnouncementFilter>> { /* private fields */ }
Expand description

Manages transactions on top of the p2p network.

This can be spawned to another task and is supposed to be run as background service. TransactionsHandle can be used as frontend to programmatically send commands to it and interact with it.

The TransactionsManager is responsible for:

  • handling incoming eth messages for transactions.
  • serving transaction requests.
  • propagate transactions

This type communicates with the NetworkManager in both directions.

  • receives incoming network messages.
  • sends messages to dispatch (responses, propagate tx)

It is directly connected to the [TransactionPool] to retrieve requested transactions and propagate new transactions over the network.

It can be configured with different policies for transaction propagation and announcement filtering. See NetworkPolicies and TransactionPolicies for more details.

§Network Transaction Processing

§Message Types

  • Transactions: Full transaction broadcasts (rejects blob transactions)
  • NewPooledTransactionHashes: Hash announcements

§Peer Tracking

  • Maintains per-peer transaction cache (default: 10,240 entries)
  • Prevents duplicate imports and enables efficient propagation

§Bad Transaction Handling

Caches and rejects transactions with consensus violations (gas, signature, chain ID). Penalizes peers sending invalid transactions.

§Import Management

Limits concurrent pool imports and backs off when approaching capacity.

§Transaction Fetching

For announced transactions: filters known → queues unknown → fetches → imports

§Propagation Rules

Based on: origin (Local/External/Private), peer capabilities, and network state. Disabled during initial sync.

§Security

Rate limiting via reputation, bad transaction isolation, peer scoring.

Implementations§

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impl<Pool: TransactionPool, N: NetworkPrimitives> TransactionsManager<Pool, N, NetworkPolicies<TransactionPropagationKind, StrictEthAnnouncementFilter>>

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pub fn new( network: NetworkHandle<N>, pool: Pool, from_network: UnboundedReceiver<NetworkTransactionEvent<N>>, transactions_manager_config: TransactionsManagerConfig, ) -> Self

Sets up a new instance.

Note: This expects an existing NetworkManager instance.

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impl<Pool: TransactionPool, N: NetworkPrimitives, PBundle: TransactionPolicies> TransactionsManager<Pool, N, PBundle>

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pub fn with_policy( network: NetworkHandle<N>, pool: Pool, from_network: UnboundedReceiver<NetworkTransactionEvent<N>>, transactions_manager_config: TransactionsManagerConfig, policies: PBundle, ) -> Self

Sets up a new instance with given the settings.

Note: This expects an existing NetworkManager instance.

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pub fn handle(&self) -> TransactionsHandle<N>

Returns a new handle that can send commands to this type.

Trait Implementations§

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impl<Pool: Debug, N: Debug + NetworkPrimitives, PBundle: Debug + TransactionPolicies> Debug for TransactionsManager<Pool, N, PBundle>

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

Formats the value using the given formatter. Read more
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impl<Pool: TransactionPool + Unpin + 'static, N: NetworkPrimitives<BroadcastedTransaction: SignedTransaction, PooledTransaction: SignedTransaction> + Unpin, PBundle: TransactionPolicies + Unpin> Future for TransactionsManager<Pool, N, PBundle>
where Pool::Transaction: PoolTransaction<Consensus = N::BroadcastedTransaction, Pooled = N::PooledTransaction>,

An endless future. Preemption ensure that future is non-blocking, nonetheless. See crate::NetworkManager for more context on the design pattern.

This should be spawned or used as part of tokio::select!.

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type Output = ()

The type of value produced on completion.
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fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>

Attempts to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more

Auto Trait Implementations§

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impl<Pool, N = BasicNetworkPrimitives<EthPrimitives, EthereumTxEnvelope<TxEip4844WithSidecar<BlobTransactionSidecarVariant>>>, PBundle = NetworkPolicies<TransactionPropagationKind, TypedStrictFilter<TxType>>> !Freeze for TransactionsManager<Pool, N, PBundle>

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impl<Pool, N = BasicNetworkPrimitives<EthPrimitives, EthereumTxEnvelope<TxEip4844WithSidecar<BlobTransactionSidecarVariant>>>, PBundle = NetworkPolicies<TransactionPropagationKind, TypedStrictFilter<TxType>>> !RefUnwindSafe for TransactionsManager<Pool, N, PBundle>

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impl<Pool, N, PBundle> Send for TransactionsManager<Pool, N, PBundle>
where Pool: Send,

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impl<Pool, N = BasicNetworkPrimitives<EthPrimitives, EthereumTxEnvelope<TxEip4844WithSidecar<BlobTransactionSidecarVariant>>>, PBundle = NetworkPolicies<TransactionPropagationKind, TypedStrictFilter<TxType>>> !Sync for TransactionsManager<Pool, N, PBundle>

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impl<Pool, N, PBundle> Unpin for TransactionsManager<Pool, N, PBundle>
where Pool: Unpin, PBundle: Unpin,

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impl<Pool, N = BasicNetworkPrimitives<EthPrimitives, EthereumTxEnvelope<TxEip4844WithSidecar<BlobTransactionSidecarVariant>>>, PBundle = NetworkPolicies<TransactionPropagationKind, TypedStrictFilter<TxType>>> !UnwindSafe for TransactionsManager<Pool, N, PBundle>

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fn from(t: T) -> T

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impl<TxEnv, T> FromRecoveredTx<&T> for TxEnv
where TxEnv: FromRecoveredTx<T>,

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fn from_recovered_tx(tx: &&T, sender: Address) -> TxEnv

Builds a [TxEnv] from a transaction and a sender address.
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impl<TxEnv, T> FromTxWithEncoded<&T> for TxEnv
where TxEnv: FromTxWithEncoded<T>,

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fn from_encoded_tx(tx: &&T, sender: Address, encoded: Bytes) -> TxEnv

Builds a [TxEnv] from a transaction, its sender, and encoded transaction bytes.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeDebug for T
where T: Debug,

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Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.