DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A68232086E
Subject: Re: Serial communication over BT using the DBus API
To:     Barry Byford <31baz66@gmail.com>
Cc:     Bluez mailing list <linux-bluetooth@vger.kernel.org>
References: <7246fd0d-022f-0d7b-ab09-1030ac06e0fa@chicoree.fr>
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From:   Sylvain Leroux <sylvain@chicoree.fr>
Message-ID: <1e8c15e4-5597-91c7-7554-51cd78cfe92a@chicoree.fr>
Date:   Wed, 10 Oct 2018 14:53:41 +0200
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On 10/09/2018 11:09 PM, Barry Byford wrote:
>> I'm currently investigating how I could use `busctl` to reproduce that
>> behavior.
> 
> Not my area of expertise but it seems like it might be difficult
> because there would be no event loop.

I tried something like that:


----
busctl call \
    org.bluez /org/bluez org.bluez.ProfileManager1 RegisterProfile \
    'osa{sv}' \
    /bluez \
    "00001101-0000-1000-8000-00805f9b34fb" \
    3 'Role' s server 'Channel' u 1 Name s 'SerialPort'
----

I'm not 100% confident with the syntax. I also tried using
`bluetoothctl` for that, but I'm even less confident with the syntax:

----
bluetoothctl << EOF
register-profile 'osa{sv}' /bluez "00001101-0000-1000-8000-00805f9b34fb"
3 'Role' s server 'Channel' u 1 Name s 'SerialPort'
EOF
----


Nevertheless, as you suggested, each of these solutions seems doomed
since, according to the documentation:


(from https://github.com/pauloborges/bluez/blob/master/doc/profile-api.txt)
> If an application disconnects from the bus all
> its registered profiles will be removed.


If I understand it well, that means even if I was able to register a new
profile, it will be removed as soon as `busctl` or `bluetoothctl`
terminate. Or did I misunderstand the whole thing?