[asterisk-bugs] [Asterisk 0016826]: Endianess problems in skinny messages

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=16826 
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Reported By:                PipoCanaja
Assigned To:                mvanbaak
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Project:                    Asterisk
Issue ID:                   16826
Category:                   Channels/chan_skinny
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     assigned
Asterisk Version:           SVN 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): 1.6.2 
SVN Revision (number only!): 246625 
Request Review:              
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Date Submitted:             2010-02-14 17:19 CST
Last Modified:              2010-02-14 17:26 CST
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Summary:                    Endianess problems in skinny messages
Description: 
I'm using a sun machine as my asterisk server:
Linux sunsrv 2.6.18-gre https://issues.asterisk.org/view.php?id=3 SMP Wed Sep 24
22:12:02 CEST 2008 sparc64
GNU/Linux

I faced some endianess problems in the skinny exchanges with my 2 phones
(Cisco 7920 and Cisco 7912). 

In default code, the phone would not even register completely.

I compared the wireshark trace of the same SVN version (Revision: 246625)
on an intel machine and this sun, and based on this, I patched my
chan_skinny.c to improve it.
Basically, it means: removing (most of the time) or adding byteswapping.
On intel platform, no swapping is needed (the phone expects LittleEndian)
so the functions are returning the same value they are called with. So if
not tested with a Big Endian machine, it's easy to call those byteswapp
functions more than needed. 

Basically, I'm now able to register, and to do the echo test. It needs
some more testing but I'm now opening the bug report so that if somebody
else is facing that issue/working at it, we can share and test patches.
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 (0118068) PipoCanaja (reporter) - 2010-02-14 17:26
 https://issues.asterisk.org/view.php?id=16826#c118068 
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I would add that this issue must be quite old. I did some tests on 1.2 and
at this time (almost 2 years ago), chan_skinny was already endianess-dirty
as far as I remember. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-02-14 17:26 PipoCanaja     Note Added: 0118068                          
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