/* returns the SalOp of a call that should be replaced by h, if any */
SalOp *sal_call_get_replaces(SalOp *op){
if (op && op->replaces){
/*rfc3891
3. User Agent Server Behavior: Receiving a Replaces Header
The Replaces header contains information used to match an existing
SIP dialog (call-id, to-tag, and from-tag). Upon receiving an INVITE
with a Replaces header, the User Agent (UA) attempts to match this
information with a confirmed or early dialog. The User Agent Server
(UAS) matches the to-tag and from-tag parameters as if they were tags
present in an incoming request. In other words, the to-tag parameter
is compared to the local tag, and the from-tag parameter is compared
to the remote tag.
*/
belle_sip_dialog_t* dialog=belle_sip_provider_find_dialog(op->base.root->prov
,belle_sip_header_replaces_get_call_id(op->replaces)
,belle_sip_header_replaces_get_to_tag(op->replaces)
,belle_sip_header_replaces_get_from_tag(op->replaces));
if (!dialog) {
/*for backward compatibility with liblinphone <= 3.10.2-243 */
dialog=belle_sip_provider_find_dialog(op->base.root->prov
,belle_sip_header_replaces_get_call_id(op->replaces)
,belle_sip_header_replaces_get_from_tag(op->replaces)
,belle_sip_header_replaces_get_to_tag(op->replaces));
}
if (dialog) {
return (SalOp*)belle_sip_dialog_get_application_data(dialog);
}
}
return NULL;
}
/* returns the SalOp of a call that should be replaced by h, if any */
SalOp *sal_call_get_replaces(SalOp *op){
if (op && op->replaces){
belle_sip_dialog_t* dialog=belle_sip_provider_find_dialog(op->base.root->prov
,belle_sip_header_replaces_get_call_id(op->replaces)
,belle_sip_header_replaces_get_from_tag(op->replaces)
,belle_sip_header_replaces_get_to_tag(op->replaces));
if (dialog) {
return (SalOp*)belle_sip_dialog_get_application_data(dialog);
}
}
return NULL;
}
