[Bluez-users] notification of baseband conection establishment

[Bluez-users] notification of baseband conection establishment

[Loreno Oliveira]

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Hi there,

does anybody know some facility for a called device to detect the
establishment of a baseband connection? That is, say we have two devices, A
and B, and A attempts a paging to B. The idea is fire an event in B as soon
as the baseband connection is established.

I thought two ideas for this: first, when the synchronous call to
"hci_create_connection" returns, A then invokes, via SDP, a service
advertised on B, which fires the event on that device (it is reasonable in
my context to assume that B advertises a service such like that). Second,
some application in B runs a thread that constantly monitors the
availability of baseband connections through "hci_for_each_dev function".
Such an application would maintain a data structure for controling existent
conections. When a new conection is established, B updates the data
structure and fires the event.

Well, I was wondering if there is a better solution for this problem.

PS: I am developing over the BlueZ code itself, and not over the utilities
hcitools, hciconfig....

Regards and thanks for any hint...

Loreno

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Re: [Bluez-users] notification of baseband conection establishment

[Marcel Holtmann]

Hi Loreno,

> does anybody know some facility for a called device to detect the
> establishment of a baseband connection? That is, say we have two
> devices, A and B, and A attempts a paging to B. The idea is fire an
> event in B as soon as the baseband connection is established. 
> 
> I thought two ideas for this: first, when the synchronous call to
> "hci_create_connection" returns, A then invokes, via SDP, a service
> advertised on B, which fires the event on that device (it is
> reasonable in my context to assume that B advertises a service such
> like that). Second, some application in B runs a thread that
> constantly monitors the availability of baseband connections through
> "hci_for_each_dev function". Such an application would maintain a data
> structure for controling existent conections. When a new conection is
> established, B updates the data structure and fires the event. 

look at the D-Bus API for BlueZ. It sends you a signal once a device has
been connected or disconnected.

Regards

Marcel



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Re: [Bluez-users] notification of baseband conection establishment

[Pierre-Yves Paulus]

Hello Loreno,

> does anybody know some facility for a called device to detect the 
> establishment of a baseband connection?

The DBus API already offers that:

Signals from the Adapter hierarchy (from dbus-api.txt):

void RemoteDeviceConnected(string address)
	This signal will be send if a low level connection
	between two devices has been created.

void RemoteDeviceDisconnected(string address)
	This signal will be send if a low level connection
	between two devices has been terminated.

Regards,
Pierre-Yves

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