Function t_forward_nonack

modules/tm/t_fwd.c:742–956

function returns: * 1 - forward successful * -1 - error during forward */

 *      -1 - error during forward
 */
int t_forward_nonack( struct cell *t, struct sip_msg* p_msg ,
						struct proxy_l * proxy, int reset_bcounter, int locked)
{
	str reply_reason_487 = str_init("Request Terminated");
	str backup_uri;
	str backup_dst;
	int branch_ret, lowest_ret;
	str current_uri;
	branch_bm_t  added_branches = BRANCH_BM_ZERO;
	struct cell *t_invite;
	int i, success_branch;
	const struct socket_info *bk_sock;
	unsigned int bk_bflags;
	struct msg_branch *branch;
	struct ua_client* uac;
	int idx;
	str bk_path;

	/* before doing enything, update the t flags from msg */
	t->uas.request->flags = p_msg->flags;

	if (p_msg->REQ_METHOD==METHOD_CANCEL) {
		t_invite=t_lookupOriginalT(  p_msg );
		if (t_invite!=T_NULL_CELL) {
			t_invite->flags |= T_WAS_CANCELLED_FLAG;
			cancel_invite( p_msg, t, t_invite, locked );
			return 1;
		}
	}

	/* do not forward requests which were already cancelled*/
	if (no_new_branches(t)) {
		LM_INFO("discarding fwd for a 6xx transaction\n");
		ser_error = E_NO_DESTINATION;
		return -1;
	}
	if (was_cancelled(t)) {
		/* is this the first attempt of sending a branch out ? */
		if (t->nr_of_outgoings==0) {
			/* if no other signalling was performed on the transaction
			 * and the transaction was already canceled, better
			 * internally generate the 487 reply here */
			if (locked)
				t_reply_unsafe( t, p_msg , 487 , &reply_reason_487);
			else
				t_reply( t, p_msg , 487 , &reply_reason_487);
		}
		LM_INFO("discarding fwd for a cancelled transaction\n");
		ser_error = E_NO_DESTINATION;
		return -1;
	}

	/* backup current uri, sock and flags... add_uac changes it */
	backup_uri = p_msg->new_uri;
	backup_dst = p_msg->dst_uri;
	bk_sock = p_msg->force_send_socket;
	bk_path = p_msg->path_vec;
	bk_bflags = p_msg->ruri_bflags;