[Asterisk-Dev] iax spec

[Tim Robbins]

> -----Original Message-----
> From: asterisk-dev-bounces at lists.digium.com 
> [mailto:asterisk-dev-bounces at lists.digium.com] On Behalf Of 
> Derek Smithies
> Sent: Wednesday, 4 May 2005 6:02 PM
> To: Asterisk Developers Mailing List
> Subject: RE: [Asterisk-Dev] iax spec
> 
> Hi,
>  So, is "StopSounds" being phased in or out ?
> 
>  I had a look through the asterisk cvs
>                :pserver:anoncvs at cvs.digium.com:/usr/cvsroot
> 
>  and saw no mention of stopsounds in 
> asterisk/include/asterisk/frame.h in the list of control frame types. 
> 
> A search through the source did not find a 255 that was 
> related to a "stopsounds". This was a quick search with grep 
> - surely the asterisk people would not be using magic numbers.
> 
> yes, it is possible someone is assigning a -1 to a byte 
> value, to get 255.
>   I did not search for instances of -1 in the iax channel source.
> 
> So please tell me: what is the status of "stop sounds"   ?
> Maybe, your answer can be written into the spec.

(Apologies for the late reply)

It's passed around as the integer value -1, but ends up as the unsigned char
value 255 when it's packed into the csub member of struct ast_iax2_full_hdr.
Look around the source tree for ast_indicate() calls with a 'condition'
argument of -1; app_dial.c would be a good place to start.


Tim