private bool IsPortOpen(string host, int port, TimeSpan timeout)
{
try
{
using (var client = new TcpClient())
{
var result = client.BeginConnect(host, port, null, null);
var success = result.AsyncWaitHandle.WaitOne(timeout);
if (!success)
{
return false;
}
client.EndConnect(result);
}
}
catch
{
return false;
}
return true;
}