[Freeswitch-dev] SSL_read in do_dtls() question

[Anthony Minessale]

On Thu, Jul 25, 2013 at 10:02 PM, Iwan Budi Kusnanto <ibk at labhijau.net>wrote:

> On Thu, Jul 25, 2013 at 7:56 PM, Anthony Minessale
> <anthony.minessale at gmail.com> wrote:
> > Does it work either way?
>
> Yes, it works either way. calling from chrome and calling to chrome.
>
> > I guess another good question is what's the difference?
>
> Yeah, what  is the difference?
> I'm asking because of my curiousity, you use SSL_read not BIO_read
> while in the same time use BIO_write.
>
> I think basically since BIO_read is the next layer down in the code.
 SSL_read just calls BIO_read anyway.
The BIO is only necessary because the dtls stream is mixed into the
rtp/srtp/rtcp/srtcp stream and the BIO is being used as a emulated stream.
We write the dtls packets into it with BIO_write...  The read end is more
like a normal ssl connection so the SSL_read is called on the ssl obj
containing the bio.



> >
> > If you have a problem or refactoring the code has merit.  Submit a patch
> to
> > Jira and provide details.
>
> OK, will do if i have it.
>
> >
> > On Jul 25, 2013 4:43 AM, "Iwan Budi Kusnanto" <ibk at labhijau.net> wrote:
> >>
> >> Hi,
> >> Just curious, why use SSL_read in do_dtls() [1] while in the same time
> >> Freeswitch use BIO_write.
> >> Just wondering why not use BIO_read.
> >>
> >> I replaced SSL_read with BIO_read and it is working fine with chrome
> >> for few calls.
> >> Not intensive test actually.
> >> So, the line become if (BIO_read(dtls->write_bio, dtls->data,
> >> dtls->bytes) == (int)dtls->bytes)
> >>
> >> Another question, still in do_dtls() about this line:
> >> BIO_write(dtls->read_bio, dtls->data, dtls->bytes)
> >>
> >> Why use dtls->read_bio in write operation?
> >>
> >> Why also need dtls->write_bio in my BIO_read above.
> >> It seems weird for me
> >>
> >>
> >> [1]
> https://github.com/FreeSWITCH/FreeSWITCH/blob/master/src/switch_rtp.c#L2376
> >>
> >> --
> >> Iwan Budi Kusnanto
> >>
> >>
> _________________________________________________________________________
> >> Professional FreeSWITCH Consulting Services:
> >> consulting at freeswitch.org
> >> http://www.freeswitchsolutions.com
> >>
> >> 
> >> 
> >>
> >> Official FreeSWITCH Sites
> >> http://www.freeswitch.org
> >> http://wiki.freeswitch.org
> >> http://www.cluecon.com
> >>
> >> FreeSWITCH-dev mailing list
> >> FreeSWITCH-dev at lists.freeswitch.org
> >> http://lists.freeswitch.org/mailman/listinfo/freeswitch-dev
> >> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-dev
> >> http://www.freeswitch.org
> >
> >
> > _________________________________________________________________________
> > Professional FreeSWITCH Consulting Services:
> > consulting at freeswitch.org
> > http://www.freeswitchsolutions.com
> >
> > 
> > 
> >
> > Official FreeSWITCH Sites
> > http://www.freeswitch.org
> > http://wiki.freeswitch.org
> > http://www.cluecon.com
> >
> > FreeSWITCH-dev mailing list
> > FreeSWITCH-dev at lists.freeswitch.org
> > http://lists.freeswitch.org/mailman/listinfo/freeswitch-dev
> > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-dev
> > http://www.freeswitch.org
> >
>
>
>
> --
> Iwan Budi Kusnanto
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://wiki.freeswitch.org
> http://www.cluecon.com
>
> FreeSWITCH-dev mailing list
> FreeSWITCH-dev at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-dev
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-dev
> http://www.freeswitch.org
>



-- 
Anthony Minessale II

FreeSWITCH http://www.freeswitch.org/
ClueCon http://www.cluecon.com/
Twitter: http://twitter.com/FreeSWITCH_wire

AIM: anthm
MSN:anthony_minessale at hotmail.com
GTALK/JABBER/PAYPAL:anthony.minessale at gmail.com
IRC: irc.freenode.net #freeswitch

FreeSWITCH Developer Conference
sip:888 at conference.freeswitch.org
googletalk:conf+888 at conference.freeswitch.org
pstn:+19193869900
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freeswitch.org/pipermail/freeswitch-dev/attachments/20130726/9153cb4d/attachment.html