Just an update to this issue: If I specify the *a_name* of the bind address in *pjsip_udp_transport_start*, then the Via: header reflects this correctly, but the SDP still advertises the IP of first interface for RTP/RTCP (even though I'm not bound to it). To clarify, the interfaces are on different subnets and the INVITEd party can't reach my first interface. I'm sure I probably need to be doing something different after creating the dialog, like *pjsip_dlg_set_transport*, but I can't quite work out how to do that. When I use *pjsip_dlg_set_transport* to set the transport to the one returned by *pjmedia_transport_udp_create*, it seems to invalidate the dialog (although no error is returned). What am I missing? On Thu, Sep 18, 2008 at 2:25 AM, Mark Webster <mark.webster+pjsip at gmail.com<mark.webster%2Bpjsip at gmail.com> > wrote: > Hello again PJSIP people, forgive me if this has already been properly > discussed or documented elsewhere, but I have searched and not found the > answer. > > My app is running on a linux box with multiple interfaces. I'm not using > PJSUA, rather just the base PJSIP/MEDIA/etc functions. > > What happens is during a SIP dialog, the SDP address and Via: fields are > always automatically populated with the IP of the first interface. However, > I am binding to another interface in *pjsip_udp_transport_start*. > > Ultimately I will be bridging calls across multiple interfaces, and I need > a way of directly controlling the IP in the SDP and Via fields for each > invite dialog. > > Could you point me to documentation or a quick example which explains how > to do this? > > Thanks in advance. > Mark > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080918/bb3cc93f/attachment.html
