I'm trying to override the Via header used for an outbound Invite. There
appear to be provisions to allow me to specify the Via at the application
level by doing the following.
nua_invite(nh,
NTATAG_USER_VIA(1),
SIPTAG_VIA_STR("SIP/2.0/UDP 1.2.3.4"),
(other stuff)
TAG_END());
However, the stack does not seem to take my Via, or at least, my host
portion of the Via. After looking at the code, it appears that the
following piece of code in function "outgoing_insert_via()" of "nta.c" is
causing the problem and the comment looks suspicious as well.
/* XXX - should we do this? */
if (via->v_host != v->v_host && str0cmp(via->v_host, v->v_host))
clear = 1, v->v_host = via->v_host;
If I comment out the clearing of the host in this scenario, then everything
works as expected. It appears that this piece of code is not allowing the
application to specify the host portion of the via, even when using
NTATAG_USER_VIA(1) with an application specified Via.
Is this a "bug" in the stack?
Matt
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