public async Task <List <PingResult> > PingScan(PingScanInput pingScanInput)
{
var result = new BlockingCollection <PingResult>();
var addressesPacks = pingScanInput.Addresses.ChunkInto(pingScanInput.Workers);
await AsyncHelper.ForEach(addressesPacks, async (addressPack, token) =>
{
foreach (var address in addressPack)
{
if (token.IsCancellationRequested)
{
break;
}
var pingResult = await Ping(new PingInput
{
Address = address,
Retries = pingScanInput.Retries,
Timeout = pingScanInput.Timeout
});
result.Add(pingResult);
OnDeviceScanned(pingResult);
}
}, pingScanInput.CancellationToken);
var finalResult = result.ToList();
OnDevicesScanComplete(finalResult);
return(finalResult);
}
public async Task Run(IOutputInput outputInput)
{
var items = Enumerable.Range(1, 5)
.ToList();
outputInput.WriteLine("5 tasks for 5 items without result which should finish in circa 2 seconds:");
await AsyncHelper.ForEach(items, async (item, cancellationToken) =>
{
await Task.Delay(2000);
outputInput.WriteLine($"Result: {item * 2}");
});
outputInput.PutLine();
outputInput.WriteLine("5 tasks for 5 items without result which should finish in circa 2 seconds:");
var result = await AsyncHelper.ForEachWithResult(items, async (item, cancellationToken) =>
{
await Task.Delay(2000);
return(item * 2);
});
foreach (var pair in result)
{
outputInput.WriteLine($"Item: {pair.Key}, result: {pair.Value}");
}
}
public async Task <List <PortScanResult> > PortScan(PortScanInput portScanInput, IPortClient portClient)
{
var result = new BlockingCollection <PortScanResult>();
var mergedInput = MergePortScanInput(portScanInput);
var addressPortPairs = mergedInput.ChunkInto(portScanInput.Workers);
await AsyncHelper.ForEach(addressPortPairs, async (addressPortPair, token) =>
{
foreach (var pair in addressPortPair)
{
if (token.IsCancellationRequested)
{
break;
}
var portResultEntry = await IsPortOpen(new PortInput
{
Address = pair.Address,
Retries = portScanInput.Retries,
Timeout = portScanInput.Timeout,
Port = pair.Port
}, portClient);
var addressResult = result.FirstOrDefault(r => r.Address == pair.Address);
if (addressResult == null)
{
var portResult = new PortScanResult
{
Address = pair.Address,
};
portResult.Results.Add(portResultEntry);
result.Add(portResult);
}
else
{
addressResult.Results.Add(portResultEntry);
}
OnPortScanned(pair.Address, portResultEntry);
}
}, portScanInput.CancellationToken);
var finalResult = result.ToList();
OnPortsScanComplete(finalResult);
return(finalResult);
}
