minor followup of #57

README.md

@@ -60,7 +60,7 @@ This repository contains the following examples:
   - [x] [Trace transaction](./examples/transactions/examples/trace_transaction.rs)
   - [x] [Transfer ERC20 token](./examples/transactions/examples/transfer_erc20.rs)
   - [x] [Transfer ETH](./examples/transactions/examples/transfer_eth.rs)
-  - [x] [Signing a transaction](./examples/transactions/examples/transaction_sign.rs)
+  - [x] [Sign and send a raw transaction](./examples/transactions/examples/sign_transaction.rs) 
 - [ ] Wallets
   - [ ] AWS signer
   - [ ] GCP signer

examples/transactions/examples/transaction_sign.rs → examples/transactions/examples/sign_transaction.rs

@@ -1,4 +1,4 @@
-//! Example of how to create and sign a transaction with EthereumSigner.
+//! Example of signing, encoding and sending a raw transaction using a wallet.
 
 use alloy::{
     network::{eip2718::Encodable2718, EthereumSigner, TransactionBuilder},
@@ -12,18 +12,22 @@ use eyre::Result;
 
 #[tokio::main]
 async fn main() -> Result<()> {
+    // Spin up a forked Anvil node.
+    // Ensure `anvil` is available in $PATH.
     let anvil = Anvil::new().try_spawn()?;
 
-    // Set up signer from the first default Anvil account (Alice).
-    let signer: LocalWallet = anvil.keys()[0].clone().into();
+    // Create a provider.
+    let rpc_url = anvil.endpoint().parse()?;
+    let provider = ProviderBuilder::new().on_http(rpc_url)?;
+
+    // Create a signer from the first default Anvil account (Alice).
+    let wallet: LocalWallet = anvil.keys()[0].clone().into();
+    let signer: EthereumSigner = wallet.into();
 
     // Create two users, Alice and Bob.
     let alice = anvil.addresses()[0];
     let bob = anvil.addresses()[1];
 
-    let rpc_url = anvil.endpoint().parse()?;
-    let provider = ProviderBuilder::new().on_http(rpc_url)?;
-
     // Build a transaction to send 100 wei from Alice to Bob.
     let tx = TransactionRequest::default()
         .with_from(alice)
@@ -36,15 +40,15 @@ async fn main() -> Result<()> {
         .with_max_fee_per_gas(20_000_000_000);
 
     // Build the transaction using the EthereumSigner with the provided signer.
-    let to_send = tx.build(&EthereumSigner::from(signer)).await?;
+    let tx_envelope = tx.build(&signer).await?;
 
     // Encode the transaction using EIP-2718 encoding.
-    let out = to_send.encoded_2718();
+    let tx_encoded = tx_envelope.encoded_2718();
 
     // Send the raw transaction and retrieve the transaction receipt.
-    let receipt = provider.send_raw_transaction(&out).await?.get_receipt().await?;
+    let receipt = provider.send_raw_transaction(&tx_encoded).await?.get_receipt().await?;
 
-    println!("Send transaction receipt: {receipt:?}");
+    println!("Send transaction: {:?}", receipt.transaction_hash);
 
     assert_eq!(receipt.from, alice);
     assert_eq!(receipt.to, Some(bob));