private async Task Listen(BTCPayWallet wallet)
{
var network = wallet.Network;
bool cleanup = false;
try
{
if (_SessionsByCryptoCode.ContainsKey(network.CryptoCode))
{
return;
}
var client = _ExplorerClients.GetExplorerClient(network);
if (client == null)
{
return;
}
if (_Cts.IsCancellationRequested)
{
return;
}
var session = await client.CreateWebsocketNotificationSessionAsync(_Cts.Token).ConfigureAwait(false);
if (!_SessionsByCryptoCode.TryAdd(network.CryptoCode, session))
{
await session.DisposeAsync();
return;
}
cleanup = true;
using (session)
{
await session.ListenNewBlockAsync(_Cts.Token).ConfigureAwait(false);
await session.ListenAllTrackedSourceAsync(cancellation : _Cts.Token).ConfigureAwait(false);
Logs.PayServer.LogInformation($"{network.CryptoCode}: Checking if any pending invoice got paid while offline...");
int paymentCount = await FindPaymentViaPolling(wallet, network);
Logs.PayServer.LogInformation($"{network.CryptoCode}: {paymentCount} payments happened while offline");
Logs.PayServer.LogInformation($"Connected to WebSocket of NBXplorer ({network.CryptoCode})");
while (!_Cts.IsCancellationRequested)
{
var newEvent = await session.NextEventAsync(_Cts.Token).ConfigureAwait(false);
switch (newEvent)
{
case NBXplorer.Models.NewBlockEvent evt:
await UpdatePaymentStates(wallet, await _InvoiceRepository.GetPendingInvoices());
_Aggregator.Publish(new Events.NewBlockEvent()
{
CryptoCode = evt.CryptoCode
});
break;
case NBXplorer.Models.NewTransactionEvent evt:
if (evt.DerivationStrategy != null)
{
wallet.InvalidateCache(evt.DerivationStrategy);
var validOutputs = network.GetValidOutputs(evt).ToList();
if (!validOutputs.Any())
{
break;
}
foreach (var output in validOutputs)
{
var key = output.Item1.ScriptPubKey.Hash + "#" +
network.CryptoCode.ToUpperInvariant();
var invoice = (await _InvoiceRepository.GetInvoicesFromAddresses(new[] { key }))
.FirstOrDefault();
if (invoice != null)
{
var address = network.NBXplorerNetwork.CreateAddress(evt.DerivationStrategy,
output.Item1.KeyPath, output.Item1.ScriptPubKey);
var paymentData = new BitcoinLikePaymentData(address,
output.matchedOutput.Value, output.outPoint,
evt.TransactionData.Transaction.RBF, output.matchedOutput.KeyPath);
var alreadyExist = invoice
.GetAllBitcoinPaymentData(false).Any(c => c.GetPaymentId() == paymentData.GetPaymentId());
if (!alreadyExist)
{
var payment = await _paymentService.AddPayment(invoice.Id,
DateTimeOffset.UtcNow, paymentData, network);
if (payment != null)
{
await ReceivedPayment(wallet, invoice, payment,
evt.DerivationStrategy);
}
}
else
{
await UpdatePaymentStates(wallet, invoice.Id);
}
}
}
}
_Aggregator.Publish(new NewOnChainTransactionEvent()
{
CryptoCode = wallet.Network.CryptoCode,
NewTransactionEvent = evt
});
break;
default:
Logs.PayServer.LogWarning("Received unknown message from NBXplorer");
break;
}
}
}
}
catch when(_Cts.IsCancellationRequested)
{
}
private async Task Listen(BTCPayWallet wallet)
{
var network = wallet.Network;
bool cleanup = false;
try
{
if (_SessionsByCryptoCode.ContainsKey(network.CryptoCode))
{
return;
}
var client = _ExplorerClients.GetExplorerClient(network);
if (client == null)
{
return;
}
if (_Cts.IsCancellationRequested)
{
return;
}
var session = await client.CreateNotificationSessionAsync(_Cts.Token).ConfigureAwait(false);
if (!_SessionsByCryptoCode.TryAdd(network.CryptoCode, session))
{
await session.DisposeAsync();
return;
}
cleanup = true;
using (session)
{
await session.ListenNewBlockAsync(_Cts.Token).ConfigureAwait(false);
await session.ListenAllDerivationSchemesAsync(cancellation : _Cts.Token).ConfigureAwait(false);
Logs.PayServer.LogInformation($"{network.CryptoCode}: Checking if any pending invoice got paid while offline...");
int paymentCount = await FindPaymentViaPolling(wallet, network);
Logs.PayServer.LogInformation($"{network.CryptoCode}: {paymentCount} payments happened while offline");
Logs.PayServer.LogInformation($"Connected to WebSocket of NBXplorer ({network.CryptoCode})");
while (!_Cts.IsCancellationRequested)
{
var newEvent = await session.NextEventAsync(_Cts.Token).ConfigureAwait(false);
switch (newEvent)
{
case NBXplorer.Models.NewBlockEvent evt:
await Task.WhenAll((await _InvoiceRepository.GetPendingInvoices())
.Select(invoiceId => UpdatePaymentStates(wallet, invoiceId))
.ToArray());
_Aggregator.Publish(new Events.NewBlockEvent()
{
CryptoCode = evt.CryptoCode
});
break;
case NBXplorer.Models.NewTransactionEvent evt:
wallet.InvalidateCache(evt.DerivationStrategy);
foreach (var output in evt.Outputs)
{
foreach (var txCoin in evt.TransactionData.Transaction.Outputs.AsCoins()
.Where(o => o.ScriptPubKey == output.ScriptPubKey)
.Select(o => output.Redeem == null ? o : o.ToScriptCoin(output.Redeem)))
{
var invoice = await _InvoiceRepository.GetInvoiceFromScriptPubKey(output.ScriptPubKey, network.CryptoCode);
if (invoice != null)
{
var paymentData = new BitcoinLikePaymentData(txCoin, evt.TransactionData.Transaction.RBF);
var alreadyExist = GetAllBitcoinPaymentData(invoice).Where(c => c.GetPaymentId() == paymentData.GetPaymentId()).Any();
if (!alreadyExist)
{
var payment = await _InvoiceRepository.AddPayment(invoice.Id, DateTimeOffset.UtcNow, paymentData, network.CryptoCode);
await ReceivedPayment(wallet, invoice.Id, payment, evt.DerivationStrategy);
}
else
{
await UpdatePaymentStates(wallet, invoice.Id);
}
}
}
}
break;
default:
Logs.PayServer.LogWarning("Received unknown message from NBXplorer");
break;
}
}
}
}
catch when(_Cts.IsCancellationRequested)
{
}