/// <summary>
/// Tries to perform mempool cleanup with the help of the backend.
/// </summary>
public async Task <bool> TryPerformMempoolCleanupAsync(Func <Uri> destAction, IPEndPoint torSocks)
{
// If already cleaning, then no need to run it that often.
if (Interlocked.CompareExchange(ref _cleanupInProcess, 1, 0) == 1)
{
return(false);
}
// This function is designed to prevent forever growing mempool.
try
{
if (!TransactionHashes.Any())
{
return(true); // There's nothing to cleanup.
}
Logger.LogInfo <MempoolService>("Start cleaning out mempool...");
using (var client = new WasabiClient(destAction, torSocks))
{
var compactness = 10;
var allMempoolHashes = await client.GetMempoolHashesAsync(compactness);
var toRemove = TransactionHashes.Where(x => !allMempoolHashes.Contains(x.ToString().Substring(0, compactness)));
int removedTxCount = 0;
foreach (uint256 tx in toRemove)
{
if (TransactionHashes.TryRemove(tx))
{
removedTxCount++;
}
}
Logger.LogInfo <MempoolService>($"{removedTxCount} transactions were cleaned from mempool.");
}
return(true);
}
catch (Exception ex)
{
Logger.LogWarning <MempoolService>(ex);
}
finally
{
Interlocked.Exchange(ref _cleanupInProcess, 0);
}
return(false);
}
