ethers-rs/examples/transfer_eth.rs

use anyhow::Result;
use ethers::{prelude::*, utils::Ganache};
use std::convert::TryFrom;

#[tokio::main]
async fn main() -> Result<()> {
    let ganache = Ganache::new().spawn();

    // connect to the network
    let provider = Provider::<Http>::try_from(ganache.endpoint())?;
    let accounts = provider.get_accounts().await?;
    let from = accounts[0];
    let to = accounts[1];

    // craft the tx
    let tx = TransactionRequest::new().to(to).value(1000).from(from); // specify the `from` field so that the client knows which account to use

    let balance_before = provider.get_balance(from, None).await?;

    // broadcast it via the eth_sendTransaction API
    let tx = provider.send_transaction(tx, None).await?.await?;

    println!("{}", serde_json::to_string(&tx)?);

    let nonce1 = provider
        .get_transaction_count(from, Some(BlockNumber::Latest.into()))
        .await?;

    let nonce2 = provider
        .get_transaction_count(from, Some(BlockNumber::Number(0.into()).into()))
        .await?;

    assert!(nonce2 < nonce1);

    let balance_after = provider.get_balance(from, None).await?;
    assert!(balance_after < balance_before);

    println!("Balance before {}", balance_before);
    println!("Balance after {}", balance_after);

    Ok(())
}