[Freeswitch-users] Changing state on 1:1 from PROGRESS_MEDIA to PROGRESS

Moises Silva moises.silva at gmail.com
Thu Aug 13 08:02:05 PDT 2009

On Wed, Aug 12, 2009 at 7:19 PM, Brian West <brian at freeswitch.org> wrote:

> Well you really can't ignore it... it happens with our ISDN stack
> too.   Thats what the VETO handles.
> /b

You lost me. What do you mean we can't ignore it? the way I see it, sure we
can and we should.

Currently that warning comes from the on_ringing() callback which blindly
attempts to move the state of the zap channel to ZAP_CHANNEL_STATE_PROGRESS,
even when the state may be already ZAP_CHANNEL_STATE_PROGRESS_MEDIA (which
means on_proceed() was called first).

As I see it, the VETO warning is more an aid to the programmer so you
quickly realize your doing a useless state change, which should be fixed. In
this case, the fix is simply checking the state of the channel before trying
to move it to progress, and don't even try to move it if already in progress
with media.

Moises Silva
Software Developer
Sangoma Technologies Inc. | 50 McIntosh Drive, Suite 120, Markham ON L3R 9T3
t. 1 905 474 1990 x 128 | e. moy at sangoma.com
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