[Bluez-devel] How to handle multiple L2cap Connection

[Bluez-devel] How to handle multiple L2cap Connection

[Mingfan.Lu]

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============
opensuse linux 10.1
bluez 2.24
hcidump 1.29
============

Problem:
  My program's logic:
  (1) have 1 thread named sensor to discover other bluetooth devices
  (2) have at most 7 threads named workers, each worker will push a file to
the scheduled device.
  (3) have 1 thread to scheduler the found deivces to the workers.
the problem is,
   Each worker,
   first to search the obex service in its target device. (use sdp_connect
to create a connection, in fact a l2cap connect)
   if obex service found, then push the file by OPENOBEX. (use
Bt_TransportConnect to create a connection)

  For the coccurent workers, the l2cap connections are created coccurently.
  So there is some error occurs such like errcode 103, errorcode 113,
errcode 16,timeout

  In the former discusstion in the maillist, sem_t could be used to sync the
call of connect

  so, I use a sem_t conn_sem to sync, but I found that no improvement.

  Who can give me a nice suggestion?
-- 
With respects,
   Mingfan.Lu

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-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
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Re: [Bluez-devel] How to handle multiple L2cap Connection

[Marcel Holtmann]

Hi,

> Problem:
>   My program's logic:
>   (1) have 1 thread named sensor to discover other bluetooth devices
>   (2) have at most 7 threads named workers, each worker will push a
> file to the scheduled device.
>   (3) have 1 thread to scheduler the found deivces to the workers.
> 
> the problem is, 
>    Each worker,
>    first to search the obex service in its target device. (use
> sdp_connect to create a connection, in fact a l2cap connect)
>    if obex service found, then push the file by OPENOBEX. (use
> Bt_TransportConnect to create a connection)
>  
>   For the coccurent workers, the l2cap connections are created
> coccurently.
>   So there is some error occurs such like errcode 103, errorcode 113,
> errcode 16,timeout
>  
>   In the former discusstion in the maillist, sem_t could be used
> to sync the call of connect
>    
>   so, I use a sem_t conn_sem to sync, but I found that no improvement.
>  
>   Who can give me a nice suggestion?

the baseband page can't be done simultaneously. Run "hcidump -X -V" to
see what error will show up.

Regards

Marcel



-------------------------------------------------------------------------
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http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
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