[Freeswitch-users] Re4: Lua "two steps" bridging

Wed Sep 14 01:52:29 MSD 2011

Thank you for your answer: I'll follow your advice.

Anyway, IMHO, Lua must be able to manage situations like this. Languages
strong integration is a plus
of FS that helps programmers to invent new services. Telling them they
still have to play with events
sounds a bit "old school". Again: it's only my opinon. Keep up the good
work!

Il 13/09/2011 23:27, Michael Collins ha scritto:
> Chris,
>
> We're glad you like FS - we like it as well.
>
> What you're trying to do is completely possible, but the way you're
> trying to do it is probably not the best choice. Instead of a local
> Lua script to control both calls, you are better off using either one
> of two options: event socket entirely or event socket + dialplan. It
> depends on the level of control that you need. If you want ultimate
> control then just use ESL right from PHP (or whichever scripting
> language you are comfortable with) and create your call legs, watching
> for the requisite CHANNEL_XXX events.
> (See http://wiki.freeswitch.org/wiki/Event_List for a nice list.)
>
> I suppose you could do it all in Lua but you'd have to keep polling
> legA channel for the endpoint_disposition variable in a while loop and
> then break out on various conditions. I'm not at all a fan of that
> method. With the event socket you listen for the events that are of
> interest to you and then act on them. Very elegant.
>
> -MC
>
> On Tue, Sep 13, 2011 at 1:59 PM, Chrisbware <chrisbware at interfree.it
> <mailto:chrisbware at interfree.it>> wrote:
>
>     Hi Michael,
>
>     a PHP script connect to Event socket and launch "luarun  call.lua
>     <legA number> <legB number> <sip account number>
>
>     Script call.lua, upload sip account password from a DB and then
>     call A number and B number using the same SIP account, bridging them.
>     What I'd like to do is:
>
>     - place call to legB number only after legA has answered the call
>     - detect hangupCause on both legs to check if something goes wrong
>     - return SUCCESS or hangup cause to the PHP script
>
>     Is it science fiction? With Asterisk isn't so hard to do and,
>     since I'm in love with FS, please don't disappoint me :-)
>
>     Chris B.
>      
>
>     Il 13/09/2011 18:44, Michael Collins ha scritto:
>>     How are you calling this Lua script to begin with? What is the
>>     big picture, that is, what is the problem you're solving? Some
>>     context might help us give you a better answer.
>>
>>     -MC
>>
>>     On Tue, Sep 13, 2011 at 5:21 AM, <chrisbware at interfree.it
>>     <mailto:chrisbware at interfree.it>> wrote:
>>
>>         Hi,
>>          
>>         thank you for your help, but doesn't work.
>>         legA:ready() is true when the first session start and not
>>         when the call is answered.
>>         So legB is called at the same time.
>>          
>>         Any other suggestion?
>>          
>>          
>>          
>>          
>>         -----Messaggio originale-----
>>         Da: Sergey Scheglov <sid at eltc.ru <mailto:sid at eltc.ru>>
>>         Inviato il: 13 Set 2011 - 17:15
>>         A: freeswitch-users at lists.freeswitch.org
>>         <mailto:freeswitch-users at lists.freeswitch.org>
>>
>>
>>
>>         ? 13 Sep 2011 09:39:33 -0000
>>         chrisbware at interfree.it <mailto:chrisbware at interfree.it> wrote:
>>
>>         >
>>         > Hi guys,
>>         >
>>         > I've read anything on this argument on Wiki but I can't find a
>>         > complete answer.
>>         >
>>         > I need to bridge two calls in Lua, waiting the first to be
>>         answered.
>>         > My basic script is:
>>         >
>>         > local GwParams =
>>         > "origination_caller_id_number="..gateway..",sip_auth_username="..gateway..",sip_auth_password="..sip_passwd
>>         > local slegA =
>>         > "[ignore_early_media=false,"..GwParams.."]sofia/external/"..callee.."@"..sip_domain
>>         > local slegB =
>>         > "[ignore_early_media=true,"..GwParams.."]sofia/external/"..called.."@"..sip_domain
>>         >
>>         > legA = freeswitch.Session(slegA);
>>         > legB = freeswitch.Session(slegB);
>>         > freeswitch.bridge(legA, legB);
>>         >
>>         >
>>         > It works but legA and legB are called at the same time. Using:
>>         >
>>         > while (legA:answered()== false) do end;
>>         >
>>         > between the two session do the job but called parties can't hear
>>         > audio.
>>         >
>>         > I promise to add a script on wiki if you help me ! :)
>>         >
>>         > Thanks in advance.
>>         >
>>         >
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>>
>>         Try:
>>
>>         legA = freeswitch.Session(slegA);
>>         if (legA:ready()) then
>>         legB = freeswitch.Session(slegB, legA);
>>         freeswitch.bridge(legA, legB);
>>         end
>>
>>         ----
>>
>>         Scheglov Sergey
>>
>>
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