public TeraSniffer(IpSniffer ipSniffer, ServerDatabase servers)
{
_serversByIp = servers.GetServersByIp();
if (ipSniffer == null)
{
var netmasks = _serversByIp.Keys.Select(s => string.Join(".", s.Split('.').Take(3)) + ".0/24").Distinct().ToArray();
string filter = string.Join(" or ", netmasks.Select(x => $"(net {x})"));
filter = "tcp and (" + filter + ")";
try
{
ipSniffer = new IpSnifferWinPcap(filter);
}
catch
{
ipSniffer = new IpSnifferRawSocketMultipleInterfaces();
}
}
_ipSniffer = ipSniffer;
var tcpSniffer = new TcpSniffer(_ipSniffer);
tcpSniffer.NewConnection += HandleNewConnection;
}
public void Initialize()
{
Task.Factory.StartNew(() =>
{
lock (_snifferLock)
{
if (_teraSniffer != null)
{ //dereference the existing sniffer if it exists
var sniffer = _teraSniffer;
_teraSniffer = null;
sniffer.Enabled = false;
sniffer.MessageReceived -= HandleMessageReceived;
sniffer.NewConnection -= HandleNewConnection;
Logger.Info("Sniffer has been disabled.");
}
IpSniffer ipSniffer = null;
if (UseRawSockets)
{
ipSniffer = new IpSnifferRawSocketMultipleInterfaces();
}
_teraSniffer = new TeraSniffer(ipSniffer, BasicTeraData.Servers);
_teraSniffer.MessageReceived += HandleMessageReceived;
_teraSniffer.NewConnection += HandleNewConnection;
_teraSniffer.Enabled = true;
Logger.Info("Sniffer has been enabled.");
}
}, TaskCreationOptions.LongRunning);//provide hint to start on new thread
}
