/// <summary>
/// Estimates the gas price given the GasPriceTarget.
/// </summary>
/// <param name="gasPriceTarget"> The target gas price to aim for. </param>
/// <returns> Promise of the eventual estimated gas price. </returns>
public static EthCallPromise <BigInteger> EstimateGasPrice(GasPriceTarget gasPriceTarget = GasPriceTarget.Standard)
{
var promise = new EthCallPromise <BigInteger>();
_EstimateGasPriceCoroutine(promise, gasPriceTarget).StartCoroutine();
return(promise);
}
/// <summary>
/// Modifies the current gas price to reflect the GasPriceTarget.
/// </summary>
/// <param name="priceTarget"> The target to modify the gas price towards. </param>
/// <param name="currentPrice"> The current functional gas price to modify. </param>
/// <returns> The new functional gas price after modification. </returns>
private static BigInteger ModifyGasPrice(GasPriceTarget priceTarget, BigInteger currentPrice)
{
switch (priceTarget)
{
case GasPriceTarget.Slow:
return(currentPrice * 3 / 4);
case GasPriceTarget.Fast:
return(currentPrice * 2);
default:
return(currentPrice * 10 / 9);
}
}
/// <summary>
/// Estimates the gas price based on current network congestion.
/// </summary>
/// <param name="promise"> Promise of the eventual gas price estimate. </param>
/// <param name="gasPriceTarget"> The GasPriceTarget to aim for. </param>
/// <returns> The time taken to retrieve the estimated gas limit. </returns>
private static IEnumerator _EstimateGasPriceCoroutine(EthCallPromise <BigInteger> promise, GasPriceTarget gasPriceTarget)
{
var request = new EthGasPriceUnityRequest(EthereumNetworkManager.CurrentNetwork.NetworkUrl);
yield return(request.SendRequest());
promise.Build(request, () => ModifyGasPrice(gasPriceTarget, request.Result.Value));
}
/// <summary>
/// Estimates the gas price based on current network congestion.
/// </summary>
/// <param name="promise"> Promise of the eventual gas price estimate. </param>
/// <param name="gasPriceTarget"> The GasPriceTarget to aim for. </param>
/// <returns> The time taken to retrieve the estimated gas limit. </returns>
private static IEnumerator _EstimateGasPriceCoroutine(EthCallPromise <BigInteger> promise, GasPriceTarget gasPriceTarget)
{
var request = new EthGasPriceUnityRequest(NetworkProvider.GetNetworkChainUrl());
yield return(request.SendRequest());
promise.Build(request, () => ModifyGasPrice(gasPriceTarget, request.Result.Value));
}
/// <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));
}
