Re: [Bluez-users] Multithread Service Discovery

["Loreno Oliveira" <lorenooliveira@gmail.com>]

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Hi Robert,

don't know if I understood your needs. Let me check. You have a client
device A that needs to inquiy neraby devices and check which of them have a
certain service of interest of A. once found such devices, A will connect to
each and consume the service. Is that right?

If this is your situation, I dealt with the same scenario some days ago in
the project I am developing. In my case, to avoid connect and query all the
devices foind during inquiry about the presence of a certain service, I
changed the device class of the devices that have the service I need. So, my
discovering phase now is quite efficient, because along with the information
of remote devices, gotten after inquiry, that are the bits that describe the
class of the remote device. So I can now discard all the devices that do not
have the bit that describe availability of a service I need.

Well, this is just my experience. In me scenario this solution is feasible
because the requeriments of my project allow it. Maybe it can be applied to
your project, maybe not :-)

Cheers!

Loreno

On 3/31/07, Robert Rawlins <robert_rawlins@hotmail.com> wrote:
>
> Hello Guys,
>
> Thank you both for your replies, this is interesting stuff.
>
> I spent some time this afternoon playing around with multithreading an SDP
> enquiry, whilst i've almost got it working, when i use the loop to initiate
> the threads they all seem to get their arguments mixed up, so when i loop
> through the join i get the wrong details returned, they all list the same
> mac address but with different channels, unfortunately i'm away from my code
> at the moment so cant post any samples.
>
> Basically i'm trying to do a device discovery, and then SDP each of the
> devices to obtain the obex channel, which i can then use to push a file to,
> and i'm looking to have it do this as quickly as possible.
>
> What would you recommend the best method for something like this? At the
> moment i'm using a C program, a large amount of the code from it is stripped
> out of an excellent article written by Albert Huang found here
> http://people.csail.mit.edu/albert/bluez-intro/c401.html.
>
> I note that a lot of people recently have been talking about the D-Bus
> API, is this something i should perhaps be using? does it suite my
> requirements?
>
> I've looked through the API documentation and it appears to have some
> excellent functions, however as novice C programmer, I'm a little bit lost
> as to where i might start with integrating the API into my application.
>
> Thanks again for any help guys,
>
> Rob
>
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