Re: Multiple sip applications with Jain-sip

Not sure what is unclear. I think the error message says it all.

On 5/4/07, [email protected] <[email protected]> wrote:
> Hello again,
>
> i created a SipApplication class that implements the SipListener
> interface. It has one SipStack, one SipProvider, and one
> ListeningPoint. As part of constructor, i pass a port number that will
> be used for as the listening port number and i am using UDP as the
> transport.
>
> I then instantiate 2 objects of the SipApplication (each of which will
> be used to setup a streaming application --> hence 2 applications as
> per previous email):
>           SipApplication app_1 = new SipApplication(5060);
>           SipApplication app_1 = new SipApplication(5065);
>
> The first stack gets instantiated correctly but when the second line of
> code is executed, i get the following error:
>   "Stack already has a listener. Only one listener per stack allowed"
>
>
> I will really appreciate any comments, guide, or solution to this problem.
>
> Thank you.
>
>
>
>
>
>
>
> Quoting [email protected]:
>
> > Thank you! The reason i had asked this is because sometimes you see
> > some architectures e.g. in a phone where one sip stack is shown and
> > IMS applications reside above it. From that perspective, it is
> > thought that there's one sip stack for all the applications. I wonder
> > if that is just a representation & the actual coding would be a sip
> > stack per application.
> >
> > Any thoughts?
> >
> >
> > Thanks again
> >
> >
> > Quoting "M. (Neo-Ranga) Ranganathan" <[email protected]>:
> >
> >> You would, create two SIP stacks and two listeners. One Sip Listener
> >> instance per sip stack instance.
> >>
> >> Ranga
> >>
> >> On 5/3/07, [email protected] <[email protected]> wrote:
> >>> Hello all,
> >>>
> >>> i was wondering if i can get some help with the following:
> >>>
> >>> i understand that the application has to implement the SipListener
> >>> interface and that there can be multiple stacks, providers, listening
> >>> points etc...
> >>> The question is if i want to implement 2 or more sip applications e.g.
> >>> simple data streaming over udp, should i use one
> >>> SipListner/SipStack/SipProvider per application or one SipListner but
> >>> different SipStack/SipProvider for each application.
> >>>
> >>> To be more clear, consider the following architecture for what i would
> >>> like to have:
> >>>
> >>>
> >>>        |----------------|            |--------------------|
> >>>        | Application #1 |            | Application #2     |
> >>>        | e.g. streaming |            |e.g. other streaming|
> >>>        ------------------            ----------------------
> >>>              \                               /
> >>>               \                             /
> >>>                \                           /
> >>>                 \                         /
> >>>                |---------------------------|
> >>>                |            SIP            |
> >>>                -----------------------------
> >>>
> >>> to ask the same question in a different manner, how would such an
> >>> architecture be mapped in the JAIN SIP world.
> >>>
> >>>
> >>> Any comments would be greatly appreciated.
> >>>
> >>>
> >>>
> >>> Thanks.
> >>>
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> >>> For additional commands, e-mail: [email protected]
> >>>
> >>>
> >>
> >>
> >> --
> >> M. Ranganathan
> >> "There are two ways to write error-free programs; only the third one
> >> works." --  Alan Perlis
> >>
> >
> >
> >
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> > For additional commands, e-mail: [email protected]
> >
>
>
>
>


-- 
M. Ranganathan
"There are two ways to write error-free programs; only the third one
works." --  Alan Perlis