SequencerClient

This library is used to read messages from the arbitrum sequencer feed and parses them into alloy transactions.

Features

It supports the following transaction types:

• Legacy transactions
• EIP-2930 transactions
• EIP-1559 transactions
• EIP-7702 transactions

It does not support:

• EIP-4844 transactions
• Compressed transactions (Not implemented in arbitrum reference either)
• Non-mutating calls (Not implemented in arbitrum reference either)
• Heartbeat messages (Deprecated, not used in arbitrum anymore)

Motivation

Listening to the sequencer feed is generally faster than listening through subscribing to logs. Since existing libraries ignore batch transactions, which seemingly make up for 80% of transactions, I created this library.

Example

async fn main() {
    let url = "wss://arb1-feed.arbitrum.io/feed";
    let (mut reader, mut receiver) = SequencerReader::new(url).await;
    tokio::spawn(async move {
        while let Some(msg) = receiver.recv().await {
            println!("Received message: {:?}", msg);
        }
    });
    reader.start_reading().await;
}