[Freeswitch-users] Receiving junk ESL events

Thu Aug 4 11:32:44 MSD 2011

Hi Anthony,

Thanks a lot for the solution. I shall try uuid_kill.

I am currently using "sendmsg" to "hangup" a UUID call, like this:

        snprintf(cmd, sizeof(cmd), "sendmsg %s\ncall-command:
hangup\nhangup-cause: ....

I send the message using esl_send_recv() and check handle.last_sr_reply
immediately after the function returns. Now I realize this is wrong because
"sendmsg" is async and "api uuid_kill" can guarantee a reply.

Thanks again,
D.Ma

On Thu, Aug 4, 2011 at 12:44 PM, Anthony Minessale <
anthony.minessale at gmail.com> wrote:

> the events are async so you can't count on the next event returned to
> be a reply to one you sent.
> you need to use the api command and uuid_kill to do the hangup
>
> char cmd[128];
> snprintf(cmd, sizeof(cmd), "api uuid_kill %s\n\n", some_uuid);
>
> esl_send_recv(&handle, cmd);
>
> this function actually guarantees a reply
>
> On Wed, Aug 3, 2011 at 2:10 AM, dma <mays.david at gmail.com> wrote:
> > Hello All,
> >
> > I have some problem with receiving and handling ESL events.
> >
> > My code is like:
> >
> > void handle_eslswitch_event_plain(esl_handle_t *handle, esl_event_t
> *event)
> > {
> >        ... ...
> >        TRACE_DEBUG("ESL event [%d] %s: UUID: %s",
> >                event->event_id, fs_get_event_header(event, "Event-Name"),
> > uniqueid);
> >         print_event(event);
> >        ... ...
> > }
> >
> > void handle_event(esl_handle_t *handle, esl_event_t *last_event)
> > {
> >        ... ...
> >        if (!strcasecmp(type, "text/event-plain")) {
> >            handle_eslswitch_event_plain(handle, handle->last_ievent);
> >        }
> >        ... ...
> > }
> >
> > int main()
> > {
> >        ... ...
> >        //receive from event socket
> >        if (handle.last_event) handle_event(&handle, handle.last_event);
> >        ... ...
> >
> > Usually I receive correct events. But I occasionally receive incorrect
> > event. See below the 1st is the normal event and the 2nd is the wrong
> event:
> >
> > <2011-07-29 14:25:29> [DEBUG] ESL event [8] CHANNEL_HANGUP_COMPLETE:
> UUID:
> > f320e4a6-db23-46d0-8d89-9957eccbd4c9
> > <2011-07-29 14:25:29> [DEBUG] RECV EVENT
> > Event-Name: CHANNEL_HANGUP_COMPLETE
> > Core-UUID: 26b77cba-8fdd-486d-90ec-6844bca58c72
> > FreeSWITCH-Hostname: fs01
> > FreeSWITCH-IPv4: 10.1.1.46
> > FreeSWITCH-IPv6: ::1
> > Event-Date-Local: 2011-07-29 14:25:29
> >
> > However, usually after failure in executing "hangup" and getting "-ERR
> ..."
> > in the event->last_sr_reply, I have wrong event, but not always (an -ERR
> > returned from executing "hangup" doesn't always result in a wrong event).
> > Here it is:
> >
> > <2011-07-29 14:25:29> [NOTICE] -ERR invalid session id
> > [f320e4a6-db23-46d0-8d89-9957eccbd4c9]
> > <2011-07-28 15:55:23> [DEBUG] ESL event [0] : UUID:
> > <2011-07-28 15:55:23> [DEBUG] RECV EVENT
> > Content-Length: 6485
> > Content-Type: text/event-plain
> >
> > Event-Name: CHANNEL_HANGUP
> > Core-UUID: 26b77cba-8fdd-486d-90ec-6844bca58c72
> > FreeSWITCH-Hostname: fs01
> > FreeSWITCH-IPv4: 10.1.1.46
> > FreeSWITCH-IPv6: %3A%3A1
> > Event-Date-Local: 2011-07-28%2015%3A55%3A23
> >
> > In the above case, both Event ID and UUID are invalid.
> >
> > I think i need more information regarding how to use the data elements in
> > ESL event, especially how to use the following:
> >
> >    char last_reply[1024];
> >    /*! Las command reply when called with esl_send_recv */
> >    char last_sr_reply[1024];
> >    /*! Last event received. Only populated when **save_event is NULL */
> >    esl_event_t *last_event;
> >    /*! Last event received when called by esl_send_recv */
> >    esl_event_t *last_sr_event;
> >    /*! This will hold already processed events queued by esl_recv_event
> */
> >    esl_event_t *race_event;
> >    /*! Events that have content-type == text/plain and a body */
> >    esl_event_t *last_ievent;
> >
> > My questions, what event should I check if I am interested in only
> > channel/call related events, and how? Do I check handle.last_event, or
> > handle.last_ievent, or what?
> >
> > Else, when checking command reply, do I check last_sr_reply, or
> > last_sr_event->body?
> >
> > Please kindly advice.
> >
> > Thanks,
> > D.Ma
> >
> >
> >
> > --
> > View this message in context:
> http://freeswitch-users.2379917.n2.nabble.com/Receiving-junk-ESL-events-tp6647776p6647776.html
> > Sent from the freeswitch-users mailing list archive at Nabble.com.
> >
> > _______________________________________________
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>
>
>
> --
> Anthony Minessale II
>
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