[Freeswitch-users] NULL ESL events on hangups to certain numbers

Josh Nankin jnankin at gmail.com
Fri Feb 21 23:17:54 MSK 2014

I apologize once more.  The issue here was not the double slashes.  The
double slashes just appeared because of the way I was dumping the event.

The real problem was that there were utf8 characters in
the variable_fax_remote_station_id.  Simply wrapping utf8_encode around the
event's serialize('json') solved the problem.  Not sure if this should be
considered a bug, but I will add this info to the ticket and the FS devs
can decide.

On Fri, Feb 21, 2014 at 12:49 PM, Josh Nankin <jnankin at gmail.com> wrote:

> Here's what's happening.  The ESL events are not null, but I was dumping
> the output of json_decode($event->serialize('json')) and that was null.
>  serialize('json') is occasionally returning non valid JSON, as in the
> following example:
>     "variable_sip_full_from": "\\"\\" <sip:4145551234 at example.com
> >;tag=v97m192HgemNN",
> The slashes should be single slashes, not double.  I will preprocess this
> for now to solve my issue, but I'll open a JIRA as well.
> On Tue, Feb 18, 2014 at 8:30 AM, Josh Nankin <jnankin at gmail.com> wrote:
>> I use the ESL to listen to Freeswitch 1.2 for call events.  The events
>> I'm listening to are CHANNEL_HANGUP and CUSTOM.
>> For certain phone numbers, I will consistently get NULL events when
>> calling them and the call dies.  Again when this happens, its only with
>> specific phone numbers, but all the time with these numbers.
>> (NULL, meaning when I var_dump the freeswitch ESL event, the event is
>> simply NULL, not a populated event object.)
>> Any ideas?
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