/**
* Forwards the message to the application server.
* - Marks the message
* - fills routes
* - replaces dst_uri
* @param msg - the SIP message
* @param m - the isc_match that matched with info about where to forward it
* @param mark - the isc_mark that should be used to mark the message
* @returns #ISC_RETURN_TRUE if OK, #ISC_RETURN_ERROR if not
*/
int isc_forward(struct sip_msg *msg, isc_match *m, isc_mark *mark) {
struct cell *t;
unsigned int hash, label;
ticks_t fr_timeout, fr_inv_timeout;
LM_DBG("marking for AS <%.*s>\n", m->server_name.len, m->server_name.s);
isc_mark_set(msg, m, mark);
/* change destination so it forwards to the app server */
if (msg->dst_uri.s)
pkg_free(msg->dst_uri.s);
msg->dst_uri.s = pkg_malloc(m->server_name.len);
if (!msg->dst_uri.s) {
LM_ERR("error allocating %d bytes\n", m->server_name.len);
return ISC_RETURN_ERROR;
}
msg->dst_uri.len = m->server_name.len;
memcpy(msg->dst_uri.s, m->server_name.s, m->server_name.len);
/* append branch if last trigger failed */
if (is_route_type(FAILURE_ROUTE))
append_branch(msg, &(msg->first_line.u.request.uri), &(msg->dst_uri), 0, Q_UNSPECIFIED, 0, 0, 0, 0, 0, 0);
// Determines the tm transaction identifiers.
// If no transaction, then creates one
if (isc_tmb.t_get_trans_ident(msg, &hash, &label) < 0) {
LM_DBG("SIP message without transaction. OK - first request\n");
if (isc_tmb.t_newtran(msg) < 0)
LM_INFO("Failed creating SIP transaction\n");
if (isc_tmb.t_get_trans_ident(msg, &hash, &label) < 0) {
LM_INFO("SIP message still without transaction\n");
} else {
LM_DBG("New SIP message transaction %u %u\n", hash, label);
}
} else {
LM_INFO("Transaction %u %u exists. Retransmission?\n", hash, label);
}
/* set the timeout timers to a lower value */
t = isc_tmb.t_gett();
fr_timeout = t->fr_timeout;
fr_inv_timeout = t->fr_inv_timeout;
t->fr_timeout = S_TO_TICKS(isc_fr_timeout) / 1000;
t->fr_inv_timeout = S_TO_TICKS(isc_fr_inv_timeout) / 1000;
/* send it */
isc_tmb.t_relay(msg, 0, 0);
/* recover the timeouts */
t->fr_timeout = fr_timeout;
t->fr_inv_timeout = fr_inv_timeout;
LM_INFO(">> msg was fwded to AS\n");
return ISC_RETURN_TRUE;
}
/**
* Forwards the message to the application server.
* - Marks the message
* - fills routes
* - replaces dst_uri
* @param msg - the SIP message
* @param m - the isc_match that matched with info about where to forward it
* @param mark - the isc_mark that should be used to mark the message
* @returns #ISC_RETURN_TRUE if OK, #ISC_RETURN_ERROR if not
*/
int isc_forward( struct sip_msg *msg, isc_match *m,isc_mark *mark)
{
struct cell *t;
unsigned int hash,label;
ticks_t fr_timeout,fr_inv_timeout;
DBG( "DEBUG:"M_NAME":isc_forward(): marking for AS <%.*s>\n",
m->server_name.len, m->server_name.s );
isc_mark_set(msg,m,mark);
/* change destination so it forwards to the app server */
if (msg->dst_uri.s) pkg_free(msg->dst_uri.s);
msg->dst_uri.s = pkg_malloc(m->server_name.len);
if (!msg->dst_uri.s) {
LOG(L_ERR,"ERR:"M_NAME":isc_forward(): error allocating %d bytes\n",m->server_name.len);
return ISC_RETURN_ERROR;
}
msg->dst_uri.len = m->server_name.len;
memcpy(msg->dst_uri.s,m->server_name.s,m->server_name.len);
/* append branch if last trigger failed */
if (*isc_tmb.route_mode == MODE_ONFAILURE)
append_branch(msg,msg->first_line.u.request.uri.s,msg->first_line.u.request.uri.len,
msg->dst_uri.s,msg->dst_uri.len,0,0);
/* set the timeout timers to a lower value */
cscf_get_transaction(msg,&hash,&label);
t = isc_tmb.t_gett();
fr_timeout = t->fr_timeout;
fr_inv_timeout = t->fr_inv_timeout;
t->fr_timeout=S_TO_TICKS(isc_fr_timeout)/1000;
t->fr_inv_timeout=S_TO_TICKS(isc_fr_inv_timeout)/1000;
/* send it */
isc_tmb.t_relay(msg,0,0);
/* recover the timeouts */
t->fr_timeout=fr_timeout;
t->fr_inv_timeout=fr_inv_timeout;
LOG(L_INFO,"INFO:"M_NAME">> msg was fwded to AS\n");
// LOG(L_INFO,"INFO:"M_NAME":isc_forward: fw relayed with marking [%8X]\n",rc->mark.cnt);
// DBG( "DEBUG:"M_NAME":isc_forward: Forward sending finished, resuming operation\n" );
return ISC_RETURN_TRUE;
}