sendTransaction method

Future<EthereumData?> sendTransaction(EthereumAddress? address, EthereumData? data, { EthereumAddress? to, int gas = 9000, int? gasPrice, int? value, int? nonce, })

Send transaction Creates new message call transaction or a contract creation, if the data field contains code. address: The address the transaction is sent from. to: (optional when creating new contract) The address the transaction is directed to. gas: (optional, default: 90000) Integer of the gas provided for the transaction execution. It will return unused gas. gasPrice: (optional, default: To-Be-Determined) Integer of the gasPrice used for each paid gas value: (optional) Integer of the value send with this transaction data: The compiled code of a contract OR the hash of the invoked method signature and encoded parameters. For details see Ethereum Contract ABI nonce: (optional) Integer of a nonce. This allows to overwrite your own pending transactions that use the same nonce. Returns the transaction hash, or the zero hash if the transaction is not yet available.

Implementation

Future<EthereumData?> sendTransaction(
    EthereumAddress? address, EthereumData? data,
    {EthereumAddress? to,
    int gas = 9000,
    int? gasPrice,
    int? value,
    int? nonce}) async {
  if (address == null) {
    throw ArgumentError.notNull('Ethereum::sendTransaction - address');
  }
  if (data == null) {
    throw ArgumentError.notNull('Ethereum::sendTransaction - data');
  }
  const method = EthereumRpcMethods.sendTransaction;
  var paramBlock = <String, String?>{
    'from': address.asString,
    'to': to?.asString,
    'gas': EthereumUtilities.intToHex(gas),
    'gasPrice':
        gasPrice == null ? null : EthereumUtilities.intToHex(gasPrice),
    'value': value == null ? null : EthereumUtilities.intToHex(value),
    'data': data.asString,
    'nonce': nonce == null ? null : EthereumUtilities.intToHex(nonce)
  };
  paramBlock =
      EthereumUtilities.removeNull(paramBlock) as Map<String, String?>;
  final dynamic params = <dynamic>[paramBlock];
  final dynamic res = await _client.rpcClient.request(method, params);
  if (res != null && res.containsKey(EthereumConstants.ethResultKey)) {
    return EthereumData.fromString(res[EthereumConstants.ethResultKey]);
  }
  _client.processError(method, res);
  return null;
}