/// <summary>
/// Scans this Host.
/// Use delay and rounds for a repeated, polling-like check (i.e. to get notified when the WOL was successful).
/// Uses 1s as Ping Timeout.
/// </summary>
/// <param name="delay">delay to start the scan in ms</param>
/// <param name="rounds">number of times the whole scan is repeated (including delay)</param>
private async void CheckStatus(int delay, int rounds)
{
Status = HostStatus.Checking;
//n rounds
for (int i = 0; i < rounds; i++)
{
//wait delay
if (delay > 0)
{
await Task.Delay(delay);
}
//send ping
HostInformation hi = await MainViewModel.CheckHost(this, 1000, HostStatus.Checking);
//if successful, more rounds aren't needed
if (hi.Status == HostStatus.Online)
{
Status = HostStatus.Online;
return;
}
}
//no answer
Status = HostStatus.Offline;
}
private void Border_MouseDown(object sender, MouseButtonEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
HostDummy hd = ((FrameworkElement)sender).DataContext as HostDummy;
if (hd != null)
{
if (hd.Host == null)
{
HostInformation hi = new HostInformation(((MainViewModel)DataContext).CurrentClassCNetwork.ToLong() + (long)hd.LastOctettInt);
hd.Host = hi;
}
if (hd.Host != null)
{
hd.Host.ScanIPCommand.Execute(null);
}
}
}
}
/// <summary>
/// Performs the IP scan
/// </summary>
public async void ScanICMP()
{
IsAnalyzing = true;
//set Class C grid to the right page
ChangeClassCNetwork(Config.IPRangeStart.ToIP().ToLongNetwork().ToIP());
//fills the list of the Hosts with actual HostInformations for all IPs that are scanned
for (long i = Config.IPRangeStart; i <= Config.IPRangeEnd; i++)
{
var hi = Hosts.FirstOrDefault(f => f.IP == i);
if (hi == null)
{
hi = new HostInformation(i);
hi.Pending = true;
Hosts.Add(hi);
}
else
{
hi.Pending = true;
}
}
//update the underlaying Hosts of the dummies
UpdateClassCDummies();
//check internet if needed
if (Config.CheckInternet && CurrentNIC != null)
{
await CheckConnectivity();
}
int hostcount = Hosts.Where(w => w.Pending).Count();
int current = 0;
int check = 1;
while (check != 0 && !Stop) //as long there are unchecked IPs...
{
//grab a bunch of pending IPs
List <HostInformation> z = Hosts.Where(w => w.Pending).Take(Config.MaxParallelConnections).ToList();
z.ForEach(e => e.Status = HostStatus.Checking);
List <Task <HostInformation> > tasks = new List <Task <HostInformation> >();
foreach (var t in z)
{
tasks.Add(CheckHost(t, Config.PingTimeout));
}
//and execute the scan for them
Task.WaitAll(tasks.ToArray());
//invoke view update
OnPropertyChanged("HostsOnline");
check = z.Count();
current += check;
ScanProgress = ((double)current / (double)hostcount) * 100;
//scroll the the next page on the Class C grid if needed
if (Config.AutoScroll && check > 0 && z.FirstOrDefault() != null)
{
ChangeClassCNetwork(z.First().IP.ToIP().ToLongNetwork().ToIP());
}
}
//now get the MACs of all newly found Hosts and store them. Update RecentHosts as well.
var l = GetAllDevicesOnLAN();
foreach (var d in l)
{
var f = Hosts.FirstOrDefault(a => a.IP == d.Key.ToLong());
if (f != null)
{
f.MAC = d.Value;
}
else
{
f = new HostInformation(d.Key.ToLong())
{
MAC = d.Value
};
Hosts.Add(f);
}
if (!Config.RecentHosts.Any(a => a.MAC.ToString() == f.MAC.ToString()))
{
Config.RecentHosts.Add(f);
}
}
//reset Pending status and do cleanup
foreach (var h in Hosts)
{
h.Pending = false;
}
ScanProgress = Stop ? 0 : 100;
Stop = false;
IsAnalyzing = false;
FireAllPropertiesChanged();
}