Re: Fw: Question about the connect Function and BlueZ.

Abraham J. Velez (EndoraSoft)
2009-08-24T17:19:05Z

Hi,

The errno works but if the socket is NON-Blocking always is 115
(EINPROGRESS).

We need to know if the user has cancel the connexion or the connexion has
broken by timeout.

We used the OBEX Push connexion and the terminal show confirmation to accept
connexion.

In this case are three possible options:

-1º The user accept the connexion (says YES to the question of terminal)
(no problem the connexion is active).
-2º The user cancel te connexion (says NO to the question of terminal).
-3º The question is cancel automatic (more than 30 seconds in the screen).

If we use connect non-blocking ....

How can we distinguish between these two last cases (2 or 3)?
(errno always is 115 (EINPROGRESS) if is a timeour or if the user says NO)

Thanks in avanced,

Regards,
Abraham.

----- Original Message -----
From: "David Sainty" <david.sainty@dtsp.co.nz>
To: "Abraham J. Velez (EndoraSoft)" <ajvelez@endorasoft.es>
Cc: <linux-bluetooth@vger.kernel.org>
Sent: Saturday, August 22, 2009 11:20 PM
Subject: Re: Fw: Question about the connect Function and BlueZ.

> Abraham J. Velez (EndoraSoft) wrote:
>>> the problem seems similar or the same to what Nick posted a view weeks
>>> ago. If you use blocking connect() in one thread the close() in another
>>> thread will not terminate the connection attempt. As far as I can tell
>>> this is true and should be fixed. It however works fine if you just
>>> would use proper non-blocking connect() with a mainloop.
>>
>> The problem of this method is the control of errors. The call to connect
>> function is blocking (because we need to
>> know if the user of the terminal can not connect errno==ECONNREFUSED).
>
> Does this not work? From connect(2):
>
> EINPROGRESS
> The socket is non-blocking and the connection cannot
> be com-
> pleted immediately. It is possible to select(2) or
> poll(2) for
> completion by selecting the socket for writing. After
> select(2)
> indicates writability, use getsockopt(2) to read the
> SO_ERROR
> option at level SOL_SOCKET to determine whether
> connect() com-
> pleted successfully (SO_ERROR is zero) or
> unsuccessfully
> (SO_ERROR is one of the usual error codes listed here,
> explain-
> ing the reason for the failure).
>
>

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