internal void _Dispose(Exception err = null)
{
lock (_loc)
{
if (_disposed)
{
return;
}
_disposed = true;
_msgs.Clear();
_msglen = 0;
}
_cancel.Cancel();
_cancel.Dispose();
_socket.Dispose();
_listen?.Dispose();
_aes.Dispose();
var dis = Disposed;
if (dis == null)
{
return;
}
Task.Run(() =>
{
if (err == null)
{
err = new OperationCanceledException("Client disposed manually or by GC.");
}
var arg = new LinkEventArgs <Exception>(err);
dis.Invoke(this, arg);
});
}
internal void _Dispose(Exception err = null)
{
lock (_locker)
{
if (_disposed)
{
return;
}
_disposed = true;
_messageQueue.Clear();
_messageLength = 0;
}
_cancellationSource.Cancel();
_cancellationSource.Dispose();
_socket.Dispose();
_listen?.Dispose();
_aes.Dispose();
var dis = Disposed;
if (dis == null)
{
return;
}
_ = Task.Run(() =>
{
if (err == null)
{
err = new OperationCanceledException("Client disposed.");
}
var arg = new LinkEventArgs <Exception>(err);
dis.Invoke(this, arg);
});
}
private void _ClientReceived(object sender, LinkEventArgs <LinkPacket> arg)
{
var obj = arg.Object;
var src = obj.Source;
var tar = obj.Target;
var buf = obj.Buffer;
if (tar == Links.Id)
{
if (obj.Path == "user.group")
{
var lst = obj.Data.As <List <int> >().Where(r => r < Links.Id);
var set = new HashSet <int>(lst);
if (set.Count > Links.GroupLabelLimit)
{
throw new LinkException(LinkError.GroupLimited);
}
var clt = (LinkClient)sender;
lock (_locker)
_Refresh(clt, set);
return;
}
foreach (var val in _clients.Values)
{
if (val != null && val._id != src)
{
val.Enqueue(buf);
}
}
return;
}
else if (tar > Links.Id)
{
// Thread safe operation
if (_clients.TryGetValue(tar, out var val))
{
val?.Enqueue(buf);
}
return;
}
else
{
// Thread safe operation
if (_set.TryGetValue(tar, out var grp))
{
foreach (var val in grp.Values)
{
if (val != null && val._id != src)
{
val.Enqueue(buf);
}
}
}
return;
}
}
internal async Task _Receiver()
{
while (_cancel.IsCancellationRequested == false)
{
var buf = await _socket.ReceiveAsyncExt();
var rec = Received;
if (rec == null)
{
continue;
}
var res = _aes.Decrypt(buf);
var pkt = new LinkPacket().LoadValue(res);
var arg = new LinkEventArgs <LinkPacket>(pkt);
rec.Invoke(this, arg);
}
}
