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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace WinUI
{
class NetworkMonitor
{
public delegate void NetworkListCallback(List<ZeroTierNetwork> networks);
public delegate void StatusCallback(ZeroTierStatus status);
private Thread runThread;
private NetworkListCallback _nwCb;
private StatusCallback _stCb;
private List<ZeroTierNetwork> _knownNetworks = new List<ZeroTierNetwork>();
private static NetworkMonitor instance;
private static object syncRoot = new object();
public static NetworkMonitor Instance
{
get
{
if (instance == null)
{
lock (syncRoot)
{
if (instance == null)
{
instance = new NetworkMonitor();
}
}
}
return instance;
}
}
private NetworkMonitor()
{
runThread = new Thread(new ThreadStart(run));
loadNetworks();
runThread.Start();
}
~NetworkMonitor()
{
runThread.Interrupt();
}
private void loadNetworks()
{
String dataPath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + "\\ZeroTier\\One";
String dataFile = Path.Combine(dataPath, "networks.dat");
if (File.Exists(dataFile))
{
List<ZeroTierNetwork> netList;
using (Stream stream = File.Open(dataFile, FileMode.Open))
{
var bformatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
netList = (List<ZeroTierNetwork>)bformatter.Deserialize(stream);
stream.Close();
}
lock (_knownNetworks)
{
_knownNetworks = netList;
}
}
}
private void writeNetworks()
{
String dataPath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + "\\ZeroTier\\One";
String dataFile = Path.Combine(dataPath, "networks.dat");
if (!Directory.Exists(dataPath))
{
Directory.CreateDirectory(dataPath);
}
using (Stream stream = File.Open(dataFile, FileMode.OpenOrCreate))
{
lock (_knownNetworks)
{
var bformatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
bformatter.Serialize(stream, _knownNetworks);
stream.Flush();
stream.Close();
}
}
}
private void apiNetworkCallback(List<ZeroTierNetwork> networks)
{
lock (_knownNetworks)
{
_knownNetworks = _knownNetworks.Union(networks, new NetworkEqualityComparer()).ToList();
foreach (ZeroTierNetwork n in _knownNetworks)
{
if (networks.Contains(n))
{
n.IsConnected = true;
}
else
{
n.IsConnected = false;
}
}
_nwCb(_knownNetworks);
}
writeNetworks();
}
private void apiStatusCallback(ZeroTierStatus status)
{
_stCb(status);
}
private void run()
{
try
{
while (runThread.IsAlive)
{
APIHandler handler = APIHandler.Instance;
if (handler != null)
{
handler.GetNetworks(apiNetworkCallback);
handler.GetStatus(apiStatusCallback);
}
Thread.Sleep(2000);
}
}
catch
{
Console.WriteLine("Monitor Thread Ended");
}
}
public void SubscribeStatusUpdates(StatusCallback cb)
{
_stCb += cb;
}
public void UnsubscribeStatusUpdates(StatusCallback cb)
{
_stCb -= cb;
}
public void SubscribeNetworkUpdates(NetworkListCallback cb)
{
_nwCb += cb;
}
public void UnsubscribeNetworkUpdates(NetworkListCallback cb)
{
_nwCb -= cb;
}
public void RemoveNetwork(String networkID)
{
lock(_knownNetworks)
{
foreach (ZeroTierNetwork n in _knownNetworks)
{
if (n.NetworkId.Equals(networkID))
{
_knownNetworks.Remove(n);
writeNetworks();
break;
}
}
}
}
}
}
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