Hi Fred,

Finding deadlock or blocking problem is not really easy.  Could you open a
JIRA issue which attaches a full thread dump of the frozen server?

On 8/23/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:

Well, perhaps I didn't use the correct way to signal
what I found as a bug or I didn't put the necessary
information. So I redo my post and try to get to the
essential. I am sure it is my fault since I surely
badly explain my problem.

I wanted to offer a function to shutdown gracefully the server,
that is to say that the server doesn't accept new connection,
but does let already connected client to finished correctly
their session (which are multi messages related).
In the beginning I used:
- setDisconnectOnUnbind(false)
- unbindAll()
- wait in my business logic that all already connected users shutting down
- setDisconnectOnUnbind(true)
- unbindAll()

I've got a lot of freeze (using 6 clients making a lot of messages)
in either the first or the second unbindAll().

So I simplify like this:
- I am waiting in my business logic that all already connected users
shutting
  down and does not accept new connection by hand (business logic).
  To make that, when I have the global static boolean shutdown as True,
  every new connexion are immediately closed by the server.
  Also, every pending connexion will finished their session, and when
  finished, the server also closed the connexion.
  The session used to send the shutdown order is closed immediately
  after receiving the order.
- setDisconnectOnUnbind(true)
- unbindAll()

I still have easily a freeze in the server during the call to
unbindAll().

- If I have only 1 client, unbindAll is never blocking.

- If I have 3 to 6 clients, making their stuff, they all disconnected
correctly from the server (the server is closing the session itself).
I saw that every clients are getting correctly the closed event.
But the server often blocks during the call of unbindAll().

I am no able at this time to see where is the problem in MINA.
Everything seems ok for me from the point of vue of a programmer
using MINA. But I surely make some mistakes since it seems
that I am the only one to have this problem.
Could it be related to the fact that this is the server that is
forcing the close of the session ?
The only thing I can tell now is that it is blocling during the
call of unbindAll() in the server part.

Hope this can help to see where the problem is.

However, MINA is really a great job and I search about 3 month to
find such a layer ! So thanks to all !


Thank you for using MINA, too!  Any feedbacks are welcome!

Trustin
--
what we call human nature is actually human habit
--
http://gleamynode.net/
--
PGP key fingerprints:
* E167 E6AF E73A CBCE EE41  4A29 544D DE48 FE95 4E7E
* B693 628E 6047 4F8F CFA4  455E 1C62 A7DC 0255 ECA6

Reply via email to