Return-Path: Subject: Re: [Bluez-devel] Ethereal support for bluetooth, developer needs sample captures From: Ruud Beukema To: bluez-devel@lists.sourceforge.net In-Reply-To: References: Content-Type: multipart/alternative; boundary="=-kRJ8Zi+wUZ6XWzpARNea" Message-Id: <1147786935.9556.9.camel@localhost> Mime-Version: 1.0 Sender: bluez-devel-admin@lists.sourceforge.net Errors-To: bluez-devel-admin@lists.sourceforge.net Reply-To: bluez-devel@lists.sourceforge.net List-Unsubscribe: , List-Id: BlueZ development List-Post: List-Help: List-Subscribe: , List-Archive: Date: Tue, 16 May 2006 15:42:15 +0200 --=-kRJ8Zi+wUZ6XWzpARNea Content-Type: text/plain Content-Transfer-Encoding: 7bit Hi Ronnie, For my internship here at Wireless Value (Netherlands) I written a program which I call 'hcimon'. With this program I can capture BCSP/HCI communication externally between a BlueCore and its host. The HCI communication (all ACL data, COMMAND/EVENT packets and LINK ESTABLISHMENT packets, yet no SCO data) is logged in a file in a format that can be reread by hcidump in order get a more human readable interpretation of the captured bytes. In order to have a captured HCI message interpreted by hcidump it needs to be preceded with a 12 byte hciheader and a packet type byte (so a total of 13 byte header). This is exactly what my program does. So, to keep it short: I've logged a lot of things now so I have enough HCI-log files in a hcidump file format. It MAY be slightly different from an official hcidump file; for example I don't know what the PAD byte in the hcidump-header is used for, so I fill this byte with 0x00 since I've seen a lot of official hcidump files doing that. Nevertheless I use them for debugging without problems. I have about 6 good hcilog files ranging in size from 30 MB to 350 MB. I may be able to upload them to some server space if you want. Let me know! Ruud On Mon, 2006-05-15 at 10:13 +0000, ronnie sahlberg wrote: > List, > Posting to devel since you guys are probably more interested in > protocol dissection support in ethereal than regular users. > > Im Ronnie sahlberg, one of the developers of ethereal. > By request of some users I have found an old patch by Christoph Scholz > to ethereal for a dissector he wrote for the bluetooth stack in 2002. > > > Christoph's email address unfortunately does not work now after 4 years :-( > > > Since the patch is 4 years old it does not apply to ethereal svn any > more since too many internal APIs have changed. > I am however massaging and refactoring it for inclusion and have > included some of the protocol stack into ethereal already. > > Ethereal reads the files generated by some tool called 'hcidump' (i am > not a bluetooth guy, im a san/nas guy so im not read up on your > tools) > > I am currently refactoring the L2CAP layer and would really benefit > from having some more example captures to work and verify with before > i check this layer in. > > In particular I am looking for L2CAP captures containing command > packets with InformationRequest/Response, and connectionless reception > channel packets. > I would also like some captures where the ACL layer contains L2CAP > pdus that are fragmented across several ACL packets and a > description on how the fragmentation works for bt. > > > This is to start with, to proceed even further I would really benefit > from having as many and as large captures as possible to verify with. > The more the merrier. > > > Anyone that can provide captures with these kind of packets, and who > want me to refactor the patch so that it can all go into mainline > ethereal, PLEASE send me such hcidump captures. > > > > best regards > ronnie sahlberg > > (I am not subscribed to this list since i am not really that > interested in bluetooth but it is a shame to let this patch diverge > more than it already has and support for bt would benefit some users. > > Please send me as many hcidump captures as possible. please. thanks) > > > ------------------------------------------------------- > 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&kid0709&bid&3057&dat1642 > _______________________________________________ > Bluez-devel mailing list > Bluez-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bluez-devel --=-kRJ8Zi+wUZ6XWzpARNea Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
Hi Ronnie,

For my internship here at Wireless Value (Netherlands) I written a program which I call 'hcimon'. With this program I can capture BCSP/HCI communication externally between a BlueCore and its host.

The HCI communication (all ACL data, COMMAND/EVENT packets and LINK ESTABLISHMENT packets, yet no SCO data) is logged in a file in a format that can be reread by hcidump in order get a more human readable interpretation of the captured bytes.

In order to have a captured HCI message interpreted by hcidump it needs to be preceded with a 12 byte hciheader and a packet type byte (so a total of 13 byte header). This is exactly what my program does.

So, to keep it short: I've logged a lot of things now so I have enough HCI-log files in a hcidump file format. It MAY be slightly different from an official hcidump file; for example I don't know what the PAD byte in the hcidump-header is used for, so I fill this byte with 0x00 since I've seen a lot of official hcidump files doing that. Nevertheless I use them for debugging without problems.

I have about 6 good hcilog files ranging in size from 30 MB to 350 MB. I may be able to upload them to some server space if you want.

Let me know!

Ruud

On Mon, 2006-05-15 at 10:13 +0000, ronnie sahlberg wrote: 
List,
Posting to devel since you guys are probably more interested in
protocol dissection support in ethereal than regular users.

Im Ronnie sahlberg, one of the developers of ethereal.
By request of some users I have found an old patch by Christoph Scholz
to ethereal for a dissector he wrote for the bluetooth stack in 2002.


Christoph's email address unfortunately does not work now after 4 years :-(


Since the patch is 4 years old it does not apply to ethereal svn any
more  since too many internal APIs have changed.
I am however massaging and refactoring it for inclusion and have
included some of the protocol stack into ethereal already.

Ethereal reads the files generated by some tool called 'hcidump' (i am
not a bluetooth guy,   im a san/nas guy  so im not read up on your
tools)

I am currently refactoring the L2CAP layer and would really benefit
from having some more example captures to work and verify with before
i check this layer in.

In particular I am looking for L2CAP captures containing command
packets with InformationRequest/Response, and connectionless reception
channel packets.
I would also like some captures where the ACL layer contains L2CAP
pdus   that are fragmented across several ACL packets and a
description on how the fragmentation works for bt.


This is to start with, to proceed even further I would really benefit
from having as many and as large captures as possible to verify with.
The more the merrier.


Anyone that can provide captures with these kind of packets, and who
want me to refactor the patch so that it can all go into mainline
ethereal,   PLEASE send me such hcidump captures.



best regards
ronnie sahlberg

(I am not subscribed to this list since i am not really that
interested in bluetooth   but it is a shame to let this patch diverge
more than it already has  and support for bt would benefit some users.

Please send me as many hcidump captures as possible.   please.   thanks)


-------------------------------------------------------
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&kid0709&bid&3057&dat1642
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--=-kRJ8Zi+wUZ6XWzpARNea-- ------------------------------------------------------- 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