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Dear Vaclav,

see my comments below.

Best regards
Michael

Michael Tuexen Tel.: +49 89 722 47210
Siemens AG Fax: +49 89 722 48212
ICN WN CS SE 51 E-mail:
Michael.Tuexen AT icn.siemens.de

> -----Original Message-----
> From: Vaclav Urbanek
> [SMTP:xurbanev AT fel.cvut.cz]
> Sent: Monday, May 07, 2001 2:31 PM
> To:
> discussion AT sctp.de
> Subject: [SCTP-Discussion] polling problem
>
> Hello all,
>
> I have a specific question about implementation.
>
> My goal is to make a some kind for ss7 mtp2 SCTP tunnel. It should be
> something like sigtran m2peer. It is not professional solution. I am
> working on it within my diploma work.
>
> I need to poll not only SCTP sockets, STDIN or UDP sockets. I need to
> poll also my LiS STREAMS file descriptor, where resides my driver for
> SS7 device /Which I wrote with compliant with openss7.org project/.
>
[Tuexen Michael] This will be possible with the next
prerelease where user defined file descriptors are supported.

> I have looked at file adaptation.c. I realized there is no support for
> this. I dont't want to poll SCTP socket and LiS fd alternately becouse
> of performance. I would like to try to suppose a soluion of this
> problem.
>
> If an (user) applicaton would know an active SCTP fildes, it could poll
> for set of SCTP and LIS(or any other general) filedes. If an POLLIN,
> POLLPRI, or POLLERR occures on SCTP fds, then application should call a
> sctp_getEvents in order to sevice SCTP events.
>
[Tuexen Michael] This should remain in the sctplib. With
the user defined filedescriptor support there should be no need
to do this in your app.

> But normally an aplicaton doesn't know these SCTP file descriptors -> it
> can't poll them. The structure poll_fds is declared static
> /adaptation.c/. I suppose to write and add a simple function which would
> return a poll_fds structure.
>
> I am not an experienced programmmer. Is this approach good? Or can I
> solve my problem easier? The second approach is of course to add support
> for registrating callbacks for user-defined general filedescriptors. It
> seems it requests bigger changes at adaptation.c.
>
[Tuexen Michael] It will be in pre10

> Thank You!
>
[Tuexen Michael] Are you using the openss7 stack for
MTP in combination with our SCTP implementation? Would be great.

Best regards
Michael
> --
>
> Vaclav Urbanek
> --------------------------------------------
> Student of Czech Technical Univeristy Prague
> Faculty of Electrical Engeneering
> Department of Telecomunications
> _______________________________________________
> discussion mailing list
> discussion AT sctp.de
> http://www.sctp.de/mailman/listinfo/discussion

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• [SCTP-Discussion] polling problem, Vaclav Urbanek, 05/07/2001
  • <Possible follow-up(s)>
  • RE: [SCTP-Discussion] polling problem, Tuexen Michael, 05/18/2001
  • Re: [SCTP-Discussion] polling problem, Vaclav Urbanek, 05/18/2001
  • Re: [SCTP-Discussion] polling problem, Vaclav Urbanek, 05/19/2001
    • Re: [SCTP-Discussion] polling problem, Michael Tüxen, 05/21/2001
      • Re: [SCTP-Discussion] polling problem, Vaclav Urbanek, 05/21/2001

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