/// <summary>
/// Sends a given amount of ether to an address.
/// </summary>
/// <param name="privateKey"> The private key of the address which is sending the ether. </param>
/// <param name="addressTo"> The address the ether is being sent to. </param>
/// <param name="amount"> The amount of ether being sent, in eth. (not wei) </param>
/// <param name="gasPrice"> The gas price (in wei) to use to send the transaction. </param>
/// <param name="gasLimit"> The gas limit (in wei) to use to send the transaction. </param>
/// <returns> Task which returns the TransactionPoller which will await the transaction result. </returns>
public static async Task <TransactionPoller> SendEther(string privateKey, string addressTo, decimal amount, BigInteger gasPrice, BigInteger gasLimit)
{
BigInteger value = SolidityUtils.ConvertToUInt(amount, 18);
EthECKey ethECKey = new EthECKey(privateKey);
InMemoryNonceService nonceService = new InMemoryNonceService(ethECKey.GetPublicAddress(), NetworkProvider.GetWeb3().Client);
TransactionSigner signer = new TransactionSigner();
string signedTxData = signer.SignTransaction(
privateKey,
NetworkProvider.GetActiveNetworkChain(),
addressTo,
value,
(await nonceService.GetNextNonceAsync()).Value,
gasPrice,
gasLimit,
string.Empty);
EthSendRawTransaction rawTransaction = new EthSendRawTransaction(NetworkProvider.GetWeb3().Client);
return(new TransactionPoller(await rawTransaction.SendRequestAsync(signedTxData)));
}
/// <summary>
/// Gets the ether balance of an address.
/// </summary>
/// <param name="address"> The address to check for the ether balance. </param>
/// <returns> Task which returns the decimal ether balance of the address. </returns>
public static async Task <decimal> GetEtherBalance(string address)
{
EthGetBalance ethGetBalance = new EthGetBalance(NetworkProvider.GetWeb3().Client);
return(SolidityUtils.ConvertFromUInt((await ethGetBalance.SendRequestAsync(address)).Value, 18));
}
/// <summary>
/// Continuously checks the transaction receipt until it is found, and calls the respective event.
/// </summary>
/// <param name="sender"> Sender object. </param>
/// <param name="eventArgs"> Timer event arguments. </param>
private async void CheckTransactionReceipt(object sender, ElapsedEventArgs eventArgs)
{
EthGetTransactionReceipt ethGetTransactionReceipt = new EthGetTransactionReceipt(NetworkProvider.GetWeb3().Client);
TransactionReceipt receipt = await ethGetTransactionReceipt.SendRequestAsync(txHash);
if (receipt == null)
{
return;
}
if (receipt.HasErrors() == true || receipt.Status.Value == 0)
{
OnTransactionFail?.Invoke();
}
else
{
OnTransactionSuccess?.Invoke();
}
timer.Stop();
}
/// <summary>
/// Estimates the gas price of an ethereum transaction.
/// </summary>
/// <param name="gasPriceTarget"> The target gas price. </param>
/// <returns> Task which returns the estimated gas price of an ethereum transaction. </returns>
public static async Task <BigInteger> EstimateGasPrice(GasPriceTarget gasPriceTarget = GasPriceTarget.Standard)
{
EthGasPrice estimateGasPrice = new EthGasPrice(NetworkProvider.GetWeb3().Client);
return(ModifyGasPrice(gasPriceTarget, (await estimateGasPrice.SendRequestAsync()).Value));
}
/// <summary>
/// Sends a message to an ethereum smart contract with the intent to change a part of the contract on the blockchain.
/// </summary>
/// <typeparam name="TFunc"> The type of the function to execute. </typeparam>
/// <param name="function"> The function to execute. </param>
/// <param name="privateKey"> The private key of the address executing the contract function. </param>
/// <param name="contractAddress"> The address of the contract which will process the message. </param>
/// <param name="gasPrice"> The gas price (in wei) to use to send the transaction. </param>
/// <param name="gasLimit"> The gas limit (in wei) to use to send the transaction. </param>
/// <param name="value"> The amount of eth (in wei) to send with the transaction. </param>
/// <returns> Task which returns the TransactionPoller which will await the transaction result. </returns>
public static async Task <TransactionPoller> SendContractMessage <TFunc>(
TFunc function,
string privateKey,
string contractAddress,
BigInteger gasPrice,
BigInteger gasLimit,
BigInteger value) where TFunc : FunctionMessage, new()
{
EthECKey ethECKey = new EthECKey(privateKey);
function.SetDefaultFromAddressIfNotSet(ethECKey.GetPublicAddress());
function.Gas = gasLimit;
function.GasPrice = gasPrice;
InMemoryNonceService nonceService = new InMemoryNonceService(ethECKey.GetPublicAddress(), NetworkProvider.GetWeb3().Client);
TransactionSigner signer = new TransactionSigner();
string signedTxData = signer.SignTransaction(
privateKey,
NetworkProvider.GetActiveNetworkChain(),
contractAddress,
value,
(await nonceService.GetNextNonceAsync()).Value,
gasPrice,
gasLimit,
function.CreateTransactionInput(contractAddress).Data);
EthSendRawTransaction rawTransaction = new EthSendRawTransaction(NetworkProvider.GetWeb3().Client);
return(new TransactionPoller(await rawTransaction.SendRequestAsync(signedTxData)));
}
