'Bluez 5 migration. DiscoverServices does not exist

I'm porting an application from Bluez 4 to Bluez 5 using DBus capabilities. In the Bluez 4, I checked remote services presence using the Device.DiscoverServices(..) method. Right now, I don't see any direct replacement in Bluez 5. As a solution, it might be a good idea to use the UUIDs property from the Device1 group, but I'm not sure whether they are the same since now it returns 128-bit UUIDs list and before we had 8/16-bit handles.

Here is part of the documentation from Bluez 4.

DiscoverServices returns a dictionary with the record handles as keys and the service record in XML format as values. The key is uint32, and the value a is a string for this dictionary.

And the information returned by StartDiscovery(..) method

<?xml version="1.0" encoding="UTF-8" ?>

<record>
    <attribute id="0x0000">
        <uint32 value="0x00010018" />
    </attribute>
    <attribute id="0x0001">
        <sequence>
            <uuid value="0x1105" />
        </sequence>
    </attribute>
    <attribute id="0x0004">
        <sequence>
            <sequence>
                <uuid value="0x0100" />
            </sequence>
            <sequence>
                <uuid value="0x0003" />
                <uint8 value="0x04" />
            </sequence>
            <sequence>
                <uuid value="0x0008" />
            </sequence>
        </sequence>
    </attribute>
    <attribute id="0x0005">
        <sequence>
            <uuid value="0x1002" />
        </sequence>
    </attribute>
    <attribute id="0x0100">
        <text value="OBEX Object Push" />
    </attribute>
    <attribute id="0x0303">
        <sequence>
            <uint8 value="0xff" />
        </sequence>
    </attribute>
</record>

And here is a Bluez 5.

org.bluez.Device1
Properties
array{string} UUIDs [readonly, optional]
List of 128-bit UUIDs that represents the available remote services.

So, how can I get remote services in the right way using Bluez 5 and DBus? Perhaps I'm looking for solutions like the output from the sdptool browse and Protocol Descriptor List fields. Still, in my case, I see only discovered UUIDs without any additional information.

I really appreciate any help.

linuxbluetoothdbusbluez


Solution 1:[1]

I am not familiar with BueZ 4 but reading the BlueZ 5 API introduction and porting guide it says the following:

Because most tasks of managing and discovering objects can be done through ObjectManager many methods, signals and properties in BlueZ 4 became redundant and were decided to be removed.

So I suspect that the specific command has been replaced with the generic D-Bus GetManagedObjects method.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 ukBaz

Related Questions