web3dart 0.0.2

Ethereum library, build DApps in Dart

web3dart

A library for making transactions in Ethereum using Dart. This library is in early development, has not been through a security audit and should not be used in a productive environment.

Features

• Send valid and signed transactions to an Ethereum client using the JSON-RPC API.

TODO

• Interact with smart contracts deployed on the Ethereum blockchain.
• Key/Account generation.

Usage

In order to use this library, you will need an client connected to Ethereum nodes so that your transactions can actually be processed. You can either set up a local, private blockchain (by for instance using truffle and ganache), run an Ethereum node yourself (for instance with geth, or use a public RPC API, like infura.

import 'package:web3dart/web3dart.dart';

main() {
//Replace with private key of an account that can transfer ether
var privateKeyHex = "c87509a1c067bbde78beb793e6fa76530b6382a4c0241e5e4a9ec0a0f44dc0d3";
var apiUrl = "http://localhost:7545"; //Replace with your API

var credentials = Credentials.fromHexPrivateKey(privateKeyHex);
var client = new Web3Client(apiUrl);

//Set up a new transaction
new Transaction(keys: credentials, maximumGas: 100000)
.prepareForSimpleTransaction( //that will transfer 2 ether
    "0xf17f52151EbEF6C7334FAD080c5704D77216b732",
    EtherAmount.fromUnitAndValue(EtherUnit.ETHER, 2))
.send(client); //and send.
}

Features and bugs

Please file feature requests and bugs at the issue tracker.