Re: [Bluez-devel] Experimental Mode: org.bluez.Adapter Methods/Signals

[Marcel Holtmann <marcel@holtmann.org>]

Hi David,

> In the adapter.c code (bluez-utils-3.29), there are a number of 4.x  
> methods and signals, which are enabled when hcid is run in  
> experimental mode (-x in startup).
>
> There are a whole lot of others that are labeled as "deprecated",  
> but which are currently available when hcid is in experimental mode,  
> as well as when it is not.  Are these in fact going to be dropped  
> when 4.x is released?

yes, with 4.0 all old ones will be dropped.

> On a similar topic:
>
> When the 4.x methods are registered, they register on bus  
> "org.bluez", with interface "org.bluez.Adapter", but unlike 3.x, the  
> path they use is not "/org/bluez/hci0" but just "/hci0" (for the  
> default case).  Is this intentional and the future direction of  
> bluez-dbus?

Yes. However use DefaultAdapter() or FindAdapter() to get the path.  
Hardcoded paths will fail in the future.

> I ask because when I tried calling DiscoverDevices, it would fail  
> when I called with path "/org/bluez/hci0", but would run when I  
> called it with path "/hci0".  But, the funny thing is that because  
> the RemoteDeviceFound signal is registered to both the old path and  
> the new path, the signals come back on "/org/bluez/hci0".

That is a bug in the 3.29 release and is already fixed in CVS.

> Interestingly enough, when I register callbacks for  
> DiscoveryStarted, RemoteDeviceFound, and DiscoveryCompleted against  
> proxies that reference both the old and new path, I find that  
> signals for DiscoveryStarted and DiscoveryCompleted come back  
> against both paths, but the actual RemoteDeviceFound (and  
> RemoteNameUpdated) comes back only against the 3.x path.

The RemoteDeviceFound will be a DeviceFound within 4.x and it will be  
a dictionary that can include the name if available.

Regards

Marcel


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