Return-Path: Date: 2 Nov 2006 12:28:56 -0000 Message-ID: <20061102122856.28888.qmail@webmail9.rediffmail.com> MIME-Version: 1.0 From: "Rupesh Gujare" To: bluez-devel@lists.sourceforge.net Cc: pewi@gw-instruments.de Subject: Re: [Bluez-devel] Need Help In SDP Programming...... Reply-To: Rupesh Gujare , BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============0740641809==" Sender: bluez-devel-bounces@lists.sourceforge.net Errors-To: bluez-devel-bounces@lists.sourceforge.net This is a multipart mime message --===============0740641809== Content-type: multipart/alternative; boundary="Next_1162470536---0-202.54.124.178-28885" This is a multipart mime message --Next_1162470536---0-202.54.124.178-28885 Content-type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline =0AThanks Peter and Mingfan for your suggestions and code review. I will = definately try to improve on it. =0A I am currently working on 2.6.15 kern= el. and had not applied any patch.=0A I will like to ask peter that which k= ernel you are using? Are you facing same problem after patching to latest k= ernel?=0A Do let me know.=0A Thanks and regards.=0A Rupesh=0A=0A>=0A>I th= ink the sleep(..) call causes a reschedule and allows the sdpd to=0A>finish= some internal cleanup or so after a close. I got some similar=0A>behaviour= even when connecting to the local sdp data base.=0A>=0A>To get your code a= little bit faster you should not use the hci_inquiry()=0A>call. This does = not only do the inquiry but also does a name request which=0A>requires a ba= seband connection to the remote device. It is much more=0A>efficient to do = the name request as a part of the sdp request if you make=0A>the sdp reques= t anyway (only one baseband connection for each device).=0A>=0A>Further, be= cause most BT chips today allow for inquirie to run in the=0A>background, y= ou can try to start SDP requests once you receive the BT=0A>address for a d= evice and not when the inquiry is finished. However, this=0A>would require = some much more complicated code and direct HCI socket=0A>programming. You m= ay have a look at hcid to get an idea.=0A>=0A>Ciao,=0A>=0A>Peter=0A --Next_1162470536---0-202.54.124.178-28885 Content-type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline

=0A
=0AThanks Peter and Mingfan for your suggestions and code = review. I will definately try to improve on it.
=0A I am currentl= y working on 2.6.15 kernel. and had not applied any patch.
=0A I will li= ke to ask peter that which kernel you are using? Are you facing same proble= m after patching to latest kernel?
=0A Do let me know.
=0A = ; Thanks and regards.
=0A Rupesh
=0A
=0A>
=0A>I think the= sleep(..) call causes a reschedule and allows the sdpd to
=0A>finish= some internal cleanup or so after a close. I got some similar
=0A>be= haviour even when connecting to the local sdp data base.
=0A>
=0A&= gt;To get your code a little bit faster you should not use the hci_inquiry(= )
=0A>call. This does not only do the inquiry but also does a name re= quest which
=0A>requires a baseband connection to the remote device. = It is much more
=0A>efficient to do the name request as a part of the= sdp request if you make
=0A>the sdp request anyway (only one baseban= d connection for each device).
=0A>
=0A>Further, because most B= T chips today allow for inquirie to run in the
=0A>background, you ca= n try to start SDP requests once you receive the BT
=0A>address for a= device and not when the inquiry is finished. However, this
=0A>would= require some much more complicated code and direct HCI socket
=0A>pr= ogramming. You may have a look at hcid to get an idea.
=0A>
=0A>= ;Ciao,
=0A>
=0A>Peter
=0A=0A

=0A

=0A

=0A --Next_1162470536---0-202.54.124.178-28885-- --===============0740641809== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- 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 --===============0740641809== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel --===============0740641809==--