* feat: add providers which rotate api keys * test: use rotating key in provider instead of hardcoded * chore: fmt |
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src | ||
tests | ||
Cargo.toml | ||
README.md |
README.md
Clients for interacting with Ethereum nodes
This crate provides asynchronous Ethereum JSON-RPC compliant clients.
For more documentation on the available calls, refer to the
Provider
struct.
Examples
use ethers_providers::{Provider, Http, Middleware};
use std::convert::TryFrom;
# async fn foo() -> Result<(), Box<dyn std::error::Error>> {
let provider = Provider::<Http>::try_from(
"https://mainnet.infura.io/v3/YOUR_API_KEY"
)?;
let block = provider.get_block(100u64).await?;
println!("Got block: {}", serde_json::to_string(&block)?);
let code = provider.get_code("0x89d24a6b4ccb1b6faa2625fe562bdd9a23260359", None).await?;
println!("Got code: {}", serde_json::to_string(&code)?);
# Ok(())
# }
Websockets
The crate has support for WebSockets via Tokio.
# async fn foo() -> Result<(), Box<dyn std::error::Error>> {
# use ethers_providers::Ws;
let ws = Ws::connect("ws://localhost:8545").await?;
# Ok(())
# }
Ethereum Name Service
The provider may also be used to resolve
Ethereum Name Service (ENS) names to addresses (and vice
versa). The default ENS address is
mainnet
and can be overriden by calling the ens
method on the provider.
# use ethers_providers::{Provider, Http, Middleware};
# use std::convert::TryFrom;
# async fn foo() -> Result<(), Box<dyn std::error::Error>> {
# let provider = Provider::<Http>::try_from(
# "https://mainnet.infura.io/v3/YOUR_API_KEY"
# )?;
// Resolve ENS name to Address
let name = "vitalik.eth";
let address = provider.resolve_name(name).await?;
// Lookup ENS name given Address
let resolved_name = provider.lookup_address(address).await?;
assert_eq!(name, resolved_name);
/// Lookup ENS field
let url = "https://vitalik.ca".to_string();
let resolved_url = provider.resolve_field(name, "url").await?;
assert_eq!(url, resolved_url);
/// Lookup and resolve ENS avatar
let avatar = "https://ipfs.io/ipfs/QmSP4nq9fnN9dAiCj42ug9Wa79rqmQerZXZch82VqpiH7U/image.gif".to_string();
let resolved_avatar = provider.resolve_avatar(name).await?;
assert_eq!(avatar, resolved_avatar.to_string());
# Ok(())
# }