Return-Path: Message-ID: <49AAEF55.7060303@powercraft.nl> Date: Sun, 01 Mar 2009 21:25:57 +0100 From: Jelle de Jong MIME-Version: 1.0 To: Alon Bar-Lev CC: linux-bluetooth@vger.kernel.org Subject: Re: bnep networking with bluez-4 References: <200902282011.48655.alon.barlev@gmail.com> <20090228200342.GA19865@jh-x301> <9e0cf0bf0903011138i13124a07q9067c59ef20b397c@mail.gmail.com> In-Reply-To: <9e0cf0bf0903011138i13124a07q9067c59ef20b397c@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 Sender: linux-bluetooth-owner@vger.kernel.org List-ID: Alon Bar-Lev wrote: > On Sat, Feb 28, 2009 at 10:03 PM, Johan Hedberg wrote: >> Hi, >> >> On Sat, Feb 28, 2009, Alon Bar-Lev wrote: >>> I am sorry I post here, but there is no user mailing list specified at >>> [1] while both links at [2] refer to this list. I will appreciate if >>> you forward me to the right place. >> Nope, as far as I understand this list is intended for both developer >> and user issues. > > Oh.. > """linux-bluetooth > This mailing list is for the kernel developer.""" > > Needs an update :) > > >>> I try to figure out how to create bnep interface. It looks like one >>> should have vast knowledge in dbus >> If you're a developer, then yes. If you're a user the interface has already >> failed at the point where it requires you to know what "bnep" is :) > > I think that you have incorrect view of users/integrators/sysadmins. > There are many levels of complexity... One is to write something like > bluz, and the other is to create a single working entity out of many > components. > So developer of one solution can be a user of the other, and > sysadmin can be a user of many etc... > > Imagin you are a sysadmin or a user of all solutions but bluez, > and need to setup a working machine, if you don't have simple > utilities you end up in being an expert in each of the components, > or ends up with incomplete solution as you don't have enough time. > > Back in the CORBA time, at least we had decent command-line interface > so that I could enumerate, create and call methods. dbus failed > to provide such interface for automation. > > All I wanted is to connect two devices using bluez, using command-line. > Using the basic layout, automation and no UI... > > tun, ppp, bridge are all working great, providing decent command-line > interface and no extra dependencies (dbus). > >> As a user, you should ultimately be using some *user* interface (either >> graphical or command line) which hides any complexities of the D-Bus >> interface. > > All I know is dbus-send, do you have any other tool? > >> The big fault from the BlueZ project's side is that it hasn't >> provided proper command-line user tools for its D-Bus interface. I think >> one of the reasons for this is that the existing tools like hcitool and >> hciconfig along with the python scripts that come with the source have >> been regarded as "good enough". > > Can you please point me to a script in source tarball to created bnep > interface? > >>> and/or python in order to achieve this goal. >> Why especially python? There's a plethora of different language bindings >> available for D-Bus. You can find a list of them here: >> http://www.freedesktop.org/wiki/Software/DBusBindings > > Again, there is a major difference between a simple script and starting > dbus development. Why do I need to know dbus if I want to USE > bluez? Well... I understand I need to start learning or just use > PPP over rfcomm... At least I know how to set this up without > dbus knowledge. > >>> Does anyone has a sample without python dependency (shell script) that >>> can create bnep interface on both ends for hidden (explicit mac) devices? >> I'm not aware of any D-Bus binding for shell languages (like bash). >> There's the generic dbus-send command line tool provided by D-Bus but it >> won't get you very far with the more complex interfaces. Just out of >> curiosity, what kind of system are you using that doesn't have python >> available? Some embedded device perhaps? (in which case the border >> between a user and developer starts to get quite blurred). > > A user is a user of a component, he can be a developer of other software. > Nothing blurred. I just wanted to know that I understand correctly and > I need to develop my own software in order to use basic functionality. > > I thought that like iproute2 support tan/tap it can support bnep and > then all be happy :) But adding dbus dependency to core is not > wise. > >>> Alternatively, can anyone please tell me what is the uuid parameter >>> for org.bluez::org.bluez.Network::Connect? >> That's the Bluetooth UUID of the service you want to use. However the >> interface will also accept "friendly" strings such as "nap" and "panu". >> Admittedly doc/network-api.txt should be updated to list all of these >> possibilities. It's much terse right now. > > Can you please tell me what is the friendly string to set up bnep interface > to a specific device? > >>> Anyway... I think the requirement for people to use dbus is truly >>> unusable... >> I'll assume you mean "user" when you say "people". You're right of >> course. The D-Bus interface was never intended for users. It was created >> for developers to build user interfaces and while GUI's are out of scope >> for the BlueZ project at least a command-line tool should be available >> for users not wanting or being able to deal with GUI's. > > Great... Need a sample... :) > >>> Providing simple solutions/scripts for common tasks is required. >> Agreed. Right now for many tasks you can use the legacy command line >> tools and even the old daemons like pand if you wish. For the D-Bus >> interface there are the python scripts within the source tree and in the >> long run we should hopefully have a proper command line user tool for >> the D-Bus interface. > > I don't understand, I thought the pand is not needed anymore, no daemon > is needed, right? Or I miss something. Anyway, most distribution do not > install pand anymore... > > Thank you, > Alon. Hi Alon, Maybe this tool can help you for the gui side of your problems, yes I know its no command-line tool but its the best I can do for you. It's about the blueman tool: http://lists.debian.org/debian-mentors/2009/02/msg00277.html http://lists.debian.org/debian-mentors/2009/03/msg00004.html I provide the link to the archive, because I sent some mail to the thread. Maybe the bluez-gnome bluetooth-applet developers can read the thread too and provide there opinion about the issues? Best regards, Jelle de Jong