public Task Stop()
{
// check current status
if (_status != ProxyServerStatus.Running)
{
throw new InvalidOperationException("Current status can't be stop.");
}
// update status
_status = ProxyServerStatus.Closing;
// stop listener
_tcpListener.Stop();
// clear listener
_tcpListener = null;
// wait listen loop stop
_listenLoop.Wait();
// disconnect all session then clear sessions collection
return(Task.WhenAll(_sessions.Values.Select(x => x.Disconnect()).ToArray())
.ContinueWith((task) =>
{
_sessions.Clear();
// update status
_status = ProxyServerStatus.Shutdown;
}));
}
public static bool IsBad(this ProxyServerStatus status)
{
switch (status)
{
case ProxyServerStatus.ActiveUpGoingDown:
case ProxyServerStatus.BackupUpGoingDown:
case ProxyServerStatus.Down:
return(true);
default:
return(false);
}
}
public static string ShortDescription(this ProxyServerStatus status)
{
switch (status)
{
case ProxyServerStatus.ActiveUp:
return("Active");
case ProxyServerStatus.ActiveUpGoingDown:
return("Active (Up -> Down)");
case ProxyServerStatus.ActiveDownGoingUp:
return("Active (Down -> Up)");
case ProxyServerStatus.BackupUp:
return("Backup");
case ProxyServerStatus.BackupUpGoingDown:
return("Backup (Up -> Down)");
case ProxyServerStatus.BackupDownGoingUp:
return("Backup (Down -> Up)");
case ProxyServerStatus.NotChecked:
return("Not Checked");
case ProxyServerStatus.Down:
return("Down");
case ProxyServerStatus.Maintenance:
return("Maintenance");
case ProxyServerStatus.Open:
return("Open");
//case ProxyServerStatus.None:
default:
return("Unknown");
}
}
private Task StartListenLoop(TaskCompletionSource <bool> tsc)
{
// update status
_status = ProxyServerStatus.Booting;
// create new listener
_tcpListener = new TcpListener(new IPEndPoint(IPAddress.Any, _listenPort));
// start listener. When initial listen port is 0, will use unused port
_tcpListener.Start();
// update current port
_listenPort = ((IPEndPoint)_tcpListener.LocalEndpoint).Port;
// set result for TSC, `await Start` will continue run
tsc.SetResult(true);
// update status
_status = ProxyServerStatus.Running;
return(ListenLoop());
}
public static string ShortDescription(this ProxyServerStatus status) =>
status switch
{
