Return-Path: Message-ID: <001c01c6fb93$c0c8d7b0$0100a8c0@kayleigh> From: "Olivier Le Pogam" To: "BlueZ development" References: <002701c6fa09$92116120$0100a8c0@kayleigh> Date: Sun, 29 Oct 2006 20:52:23 +0100 Mime-Version: 1.0 Subject: Re: [Bluez-devel] Concurrency / Multi processing questions Reply-To: Olivier Le Pogam , BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Sender: bluez-devel-bounces@lists.sourceforge.net Errors-To: bluez-devel-bounces@lists.sourceforge.net Hi Peter, Thanks for your answers ! > This would not be possible. You can only have have one connection on a > single server channel number (SCN). This is not a problem of BlueZ but a > general Bluetooth issue. It may be possible to change the bluetooth stack > in a way which will support a scenario aas described above, but I think > this won't be a trivial task. And I'm not sure if it will still comply to > the standard. Damn, it means that if I want a service (UUID, RFCOMM channel) to be available concurrently to several remote devices from a unique computer, I need to have as many BlueTooth adaptors as possible concurrent remote devices, and a service declared on the SDP for each one ? and basically each Service server is a loop on listen / accept / process /close without any fork, am I right ? >> - Now taking a reverse problem, let's assume I have a client >> application that will "push" content to mobile phones, on channel 9. > This won't be a problem as long as you just have a single connection to > each remote device. The reason is that for every outgoing connection a new > local channel will be allocated which is independend from he remote server > channel you connect to. Ok, according to the former principle I suppose i.e. one service <=> one concurrent connection to that service for an adaptor. I have a binding question here : I've made simple tests, doing simple socket applications (connect / send / close) from a computer to a another one, and if for example I have declared a service on the second computer (let's say on channel 14), when the client application is bound it's on local channel 14 too (after a getsockname client-side), i've understood it's because of the DLC which is unique on both side of RFCOMM. Now let's assume I open another application concurrently client-side, connecting to another remote device but on channel 14 too, it will be smooth ? (I ask this question because you say "The reason is that for every outgoing connection a new local channel will be allocated which is independend from he remote server channel you connect to") and experience has showed something different. I will try more !! Basically, it would be a computer trying to push data on as many remote devices as possible on the same remote channel, and I would like to use the max connections possible for each bluetooth adaptor ! Thanks **a lot** for your help !! Oli -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.408 / Virus Database: 268.13.17/505 - Release Date: 27/10/2006 ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel