Return-Path: Message-ID: <44A4FB83.8090001@infitsrl.com> Date: Fri, 30 Jun 2006 12:22:59 +0200 From: Fabrizio Guglielmino MIME-Version: 1.0 To: BlueZ development References: <44A4E5A4.5070904@infitsrl.com> <1151657604.20305.9.camel@localhost> <44A4E987.1000104@infitsrl.com> <1151658731.20305.11.camel@localhost> In-Reply-To: Subject: Re: [Bluez-devel] sdp_connect thread safe? Reply-To: BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="iso-8859-1" Sender: bluez-devel-bounces@lists.sourceforge.net Errors-To: bluez-devel-bounces@lists.sourceforge.net Thanks to all.... I'm nearly sure that the solution for me is lot more simple. It would = like to have a tool hcidump-like for windows to verifying what happens. To obtain the rfcomm channel associated to a service (opush in my case) = sd_connect and the response inspection it's the only way? My requirement in the end it's only to find all devices opush enabled in = a determinate moment and send to all a file (a vcalendar). The problem = is that send have to be simultaneous (or nearly). If every opush search = is blocking target devices becames like a chain where every one it's = conditioned by the previouos inquired. Peter Wippich ha scritto: > Hello All, = > = >> Hi Fabrizio, >> >> = >>> Is there a list of bluetooth adapters supporting this feature? >>> Doing hciconfig -a [adapter] is not possible to known if the device = >>> support multiple simultaneus sdp_connect ? >>> = >> I think my phrase was not clear. I haven't seen any adapter that is >> capable of multiple baseband pages at the same time. >> = > > So do I. There's a simple proof: just send a HCI_Create_Connection comman= d = > and than try to send a second Create_Connection before you get the = > connection complete event for the first Create_Connection. = > If the second create connection passes, please tell me what chip it was = > !!! > The normal behaviour is that the chip will reply with an error event (lik= e = > command dissallowed) for the second connection attempt. I think there was = > some discussion about this some time ago. The only way to come around thi= s = > is a complicated buffering for HCI commands inside BlueZ. It will require = > the stack to hold a create connection command in the queue when it gets a= n = > error response for a create connection command and re-issue it once it = > gets an connection complete or connection fail event. > The real bad thing here is that different chips will behave different so = > there is some kind of hardware dependence here. = > > I have not checked but as far as I know BlueZ does not support such a = > mechanism. Feel free to implement this (the less complicated task) and = > make sure it always works correctly (the much more complicated task > because you have to test with a lot of different hardware). = > > You may also try something on the upper level. For example synchronize = > your threads in such a way that there is only one outstanding sdp connect= . = > For example use a semaphore which must be owned by the thread to issue a = > sdp connect. Once the sdp connect is through (even completed or failed) = > the semaphore is freed and the next thread waiting is allowed to start a = > sdp connection. = > > Ciao, = > > Peter = > > | Peter Wippich Voice: +49 30 46776411 | > | G&W Instruments GmbH fax: +49 30 46776419 | > | Gustav-Meyer-Allee 25, Geb. 12 Email: pewi@gw-instruments.de | > | D-13355 Berlin / Germany | > > > 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 ea= sier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&dat= =3D121642 > _______________________________________________ > Bluez-devel mailing list > Bluez-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bluez-devel > > > = -- = ______________________________ Fabrizio Guglielmino = Infit Srl Software Engineering Tel. +39 11 7410915 Fax. +39 11 7410915 www.infitsrl.com C.so Svizzera, 79/8 - Torino ______________________________ Il presente messaggio ed ogni eventuale allegato hanno natura confidenziale e sono riservati ai destinatari indicati. La diffusione a terzi e qualsiasi altro uso non autorizzato sono proibiti. I messaggi ed i relativi allegati possono essere soggetti ad alterazioni. Il mittente declina ogni responsabilit=E0 per le eventuali alterazioni, modificazioni o falsificazioni. 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 easi= er Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=3D1= 21642 _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel