ethers-rs/examples/transfer_eth.rs

47 lines
1.3 KiB
Rust

use ethers::{
types::{BlockNumber, TransactionRequest},
HttpProvider,
};
use std::convert::TryFrom;
#[tokio::main]
async fn main() -> Result<(), failure::Error> {
// connect to the network
let provider = HttpProvider::try_from("http://localhost:8545")?;
let accounts = provider.get_accounts().await?;
let from = accounts[0];
// craft the tx
let tx = TransactionRequest::new()
.send_to_str("9A7e5d4bcA656182e66e33340d776D1542143006")?
.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_hash = provider.send_transaction(tx).await?;
let tx = provider.get_transaction(tx_hash).await?;
println!("{}", serde_json::to_string(&tx)?);
let nonce1 = provider
.get_transaction_count(from, Some(BlockNumber::Latest))
.await?;
let nonce2 = provider
.get_transaction_count(from, Some(BlockNumber::Number(0.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(())
}