[Freeswitch-users] Subscribing to events in managed C# / .NET

[Phillip Jones]

Surely this is because you are calling ev.serialized_string and ev is null
if there is not event waiting?
i.e.  con.pop(0); returns null if no event is waiting.

Therefore

if(ev != null)
      Log.WriteLine(LogLevel.Notice, "Event: " + ev.serialized_string);

would work, alternatively calling

                    Event ev = con.pop(1);

would block until an event is available - and therefore ev cannot be
null....



On Wed, Sep 9, 2009 at 2:01 PM, Josh Rivers <josh at radianttiger.com> wrote:

> A new discovery:        public bool Load()
>         {
>             ThreadPool.QueueUserWorkItem((o) =>
>             {
>                 Log.WriteLine(LogLevel.Notice, "Thread Starting. ");
>                 EventConsumer con = new EventConsumer("all", "");
>                 while (true)
>                 {
>                     Event ev = con.pop(0);
>                     if (ev == null) continue;
>                     Log.WriteLine(LogLevel.Notice, "Event: " +
> ev.serialized_string);
>                 }
>             });
>             return true;
>         }
> Does not crash. (Adding the null check prevents crash.) The backgrounded
> loop runs fine. Looks like the event object goes straight to pinvokes, so a
> null result just crashes?
>
> I like the idea of a 'startup-script' for mod_managed. It would also be
> excellent if there was an event or message  informing the background code to
> terminate nicely when the module reloads.
>
> --Josh
>
> On Wed, Sep 9, 2009 at 12:57 PM, Jeff Lenk <jlenk at frontiernet.net> wrote:
>
>>
>> I think the problem here is that the loader only keeps this method in
>> scope
>> until completion then it drops the remoted connection. Therefore you
>> should
>> not use threads in this method. Michael please correct me if I am wrong
>> here.
>>
>> As an example of the failure simply just put a Sleep(10000) call in the
>> thread and you will see the failure.
>>
>> As Michael said this method was only designed to allow the option to opt
>> out
>> of being loaded.
>>
>> In order to support this perhaps a configuration flag simular to the lua
>> "startup-script" should be added.
>>
>>
>>
>> Here is the error I get with the loop I mentioned. -Josh
>> [image: Capture.PNG]
>>
>> On Tue, Sep 8, 2009 at 5:05 AM, Michael Giagnocavo
>> <mgg at giagnocavo.net>wrote:
>>
>> >  Hi,
>> >
>> >
>> >
>> >                 Can you please elaborate on the crash you receive when
>> you
>> > queue a thread during load?
>> >
>> >
>> >
>> > Thanks,
>> >
>> > Michael
>> >
>> >
>>
>> --
>> View this message in context:
>> http://n2.nabble.com/Subscribing-to-events-in-managed-C-NET-tp3573619p3613195.html
>> Sent from the freeswitch-users mailing list archive at Nabble.com.
>>
>> _______________________________________________
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> http://www.freeswitch.org
>>
>
>
> _______________________________________________
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20090910/50577281/attachment-0002.html