/// <summary>
/// Create scanner
/// </summary>
/// <param name="logger"></param>
/// <param name="source"></param>
/// <param name="target"></param>
/// <param name="portProbe"></param>
/// <param name="maxProbeCount"></param>
/// <param name="minProbePercent"></param>
/// <param name="timeout"></param>
/// <param name="ct"></param>
public PortScanner(ILogger logger, IEnumerable <IPEndPoint> source,
Action <IPEndPoint> target, IPortProbe portProbe, int?maxProbeCount,
int?minProbePercent, TimeSpan?timeout, CancellationToken ct)
{
_logger = logger ?? throw new ArgumentNullException(nameof(logger));
_source = source?.GetEnumerator() ??
throw new ArgumentNullException(nameof(source));
_target = target ?? throw new ArgumentNullException(nameof(target));
_maxProbeCount = maxProbeCount ?? kDefaultMaxProbeCount;
_minProbeCount = (int)(_maxProbeCount *
((minProbePercent ?? kDefaultMinProbePercent) / 100.0));
_timeout = timeout ?? kDefaultProbeTimeout;
_portProbe = portProbe ?? new NullPortProbe();
_requeued = new ConcurrentQueue <IPEndPoint>();
_rand = new Random();
_probePool = LinqEx
.Repeat(i => new ConnectProbe(this, i), _maxProbeCount)
.ToList();
_cts = new CancellationTokenSource();
ct.Register(_cts.Cancel);
_completion = new TaskCompletionSource <bool>();
_active = _maxProbeCount;
foreach (var probe in _probePool)
{
probe.Start();
}
}
/// <summary>
/// Create scanner
/// </summary>
/// <param name="source"></param>
/// <param name="target"></param>
/// <param name="portProbe"></param>
/// <param name="maxProbeCount"></param>
/// <param name="minProbePercent"></param>
/// <param name="timeout"></param>
/// <param name="ct"></param>
public async Task ScanAsync(IEnumerable <IPEndPoint> source,
Action <IPEndPoint> target, IPortProbe portProbe, int?maxProbeCount,
int?minProbePercent, TimeSpan?timeout, CancellationToken ct)
{
using (var scanner = new PortScanner(_logger, source, (s, p) => target(p), portProbe,
maxProbeCount, minProbePercent, timeout, ct)) {
await scanner.Completion;
}
}
/// <summary>
/// Create scanner
/// </summary>
/// <param name="services"></param>
/// <param name="source"></param>
/// <param name="target"></param>
/// <param name="portProbe"></param>
/// <param name="ct"></param>
public static Task ScanAsync(this IScanServices services, IEnumerable <IPEndPoint> source,
Action <IPEndPoint> target, IPortProbe portProbe, CancellationToken ct) =>
services.ScanAsync(source, target, portProbe, 5000, null, null, ct);
/// <summary>
/// Scan range of addresses and return the ones that are open
/// </summary>
/// <param name="services"></param>
/// <param name="range"></param>
/// <param name="probe"></param>
/// <param name="ct"></param>
/// <returns></returns>
public static async Task <IEnumerable <IPEndPoint> > ScanAsync(this IScanServices services,
IEnumerable <IPEndPoint> range, IPortProbe probe, CancellationToken ct)
{
var result = new List <IPEndPoint>();
await ScanAsync(services, range, ep => result.Add(ep), probe, ct);
return(result);
}
/// <summary>
/// Create scanner
/// </summary>
/// <param name="logger"></param>
/// <param name="source"></param>
/// <param name="target"></param>
/// <param name="portProbe"></param>
/// <param name="ct"></param>
public PortScanner(ILogger logger, IEnumerable <IPEndPoint> source,
Action <IPEndPoint> target, IPortProbe portProbe, CancellationToken ct) :
this(logger, source, target, portProbe, null, null, null, ct)
{
}
