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chan_sip: Allow target refresh (Contact update) on re-INVITE.

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Previously, the Contact was stored only on initial INVITE and on any
18X and 200. That meant that after re-INVITEs from *us* the Contact
could get updated, but after re-INVITEs from the *peer*, it did not.

This changeset fixes this inconsistency, properly allowing target
refreshes through re-INVITES (RFC3261, 12.2).

If your strictrtp setting allows it, this change allows you to switch
the source IP of a connected/calling device mid-call with a simple
re-INVITE from the new IP.

ASTERISK-26358 #close

Change-Id: Ibb8512054ab27c8c3d2514022568fde943bf2435
This commit is contained in:
Walter Doekes
2016-09-12 10:28:17 +02:00
committed by Walter Doekes
parent 7580a736bb
commit da8ba990d1
1 changed files with 4 additions and 1 deletions
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5
channels/chan_sip.c
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@@ -26057,12 +26057,15 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, str
copy_request(&p->initreq, req); /* Save this INVITE as the transaction basis */
if (sipdebug)
ast_debug(1, "Initializing initreq for method %s - callid %s\n", sip_methods[req->method].text, p->callid);
/* Parse new contact both for existing (re-invite) and new calls. */
parse_ok_contact(p, req);
if (!p->owner) { /* Not a re-invite */
if (req->debug)
ast_verbose("Using INVITE request as basis request - %s\n", p->callid);
if (newcall)
append_history(p, "Invite", "New call: %s", p->callid);
parse_ok_contact(p, req);
} else { /* Re-invite on existing call */
ast_clear_flag(&p->flags[0], SIP_OUTGOING); /* This is now an inbound dialog */
if (get_rpid(p, req)) {