On Fri, May 15, 2009 at 6:06 PM, Ponik Supapupa <spunyk at gmail.com> wrote:
> Hi all.
> I wrote aboute this issue some time ago, but as i see in 1.2 version it is
> the same.
>
Sorry we missed that!
> So, problem is: when i want to create a SDP for the SRTP session i call
> transport_encode_sdp() method of the SRTP transport (transport_srtp.c), this
> method at the end returns a result of the transport_encode_sdp() of the UDP
> transport (transport_udp.c), but there we see next:
> [i]
> if (pj_stricmp(&m_loc->desc.transport, &ID_RTP_AVP) ||
> (m_rem && pj_stricmp(&m_rem->desc.transport, &ID_RTP_AVP)))
> {
> pjmedia_sdp_media_deactivate(pool, m_loc);
> return PJMEDIA_SDP_EINPROTO;
> }
> [/i]
>
Media with RTP/AVP can't talk to RTP/SAVP (and vice versa), hence the above
code.
> In this moment we RTP/SAVP transport, not RTP/AVP and, of course, we'll got
> a wrong deactivated SDP.
> I resolve it for me by adding check also for the RTP/SAVP - but may be i'm
> wrong?
>
The SRTP transport supports both RTP/AVP and RTP/SAVP, via the
pjmedia_srtp_use flag. If you set it to PJMEDIA_SRTP_MANDATORY, RTP/SAVP
will be used instead.
> Best regards and thanks for the great library:)
>
Thanks!
cheers
Benny
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