/*
 * Copyright (C) 2001-2003 FhG Fokus
 *
 * This file is part of Kamailio, a free SIP server.
 *
 * Kamailio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version
 *
 * Kamailio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef _T_FWD_H
#define _T_FWD_H

#include "../../core/proxy.h"
#include "h_table.h"

/* cancel hop by hop */
#define E2E_CANCEL_HOP_BY_HOP

enum unmatched_cancel_t
{
	UM_CANCEL_STATEFULL = 0,
	UM_CANCEL_STATELESS,
	UM_CANCEL_DROP
};

typedef int (*tfwd_f)(struct sip_msg *p_msg, struct proxy_l *proxy);
typedef int (*taddblind_f)(/*struct cell *t */ void);
typedef int (*treplicate_uri_f)(struct sip_msg *p_msg, str *suri);

void t_on_branch(unsigned int go_to);
void set_branch_route(unsigned int on_branch);
unsigned int get_on_branch(void);
int t_replicate_uri(struct sip_msg *p_msg, str *suri);
int t_replicate(struct sip_msg *p_msg, struct proxy_l *proxy, int proto);
/*  -- not use outside t_fwd.c for noe
char *print_uac_request( struct cell *t, struct sip_msg *i_req,
    int branch, str *uri, unsigned int *len, struct dest_info *dst);
*/
void e2e_cancel(struct sip_msg *cancel_msg, struct cell *t_cancel,
		struct cell *t_invite);
int e2e_cancel_branch(struct sip_msg *cancel_msg, struct cell *t_cancel,
		struct cell *t_invite, int branch);
/*
int add_uac(struct cell *t, struct sip_msg *request, str *uri, str* next_hop,
				str* path, struct proxy_l *proxy, int proto );
*/

/* prepare_new_uac flags */
#define UAC_DNS_FAILOVER_F 1 /**< new branch due to dns failover */
#define UAC_SKIP_BR_DST_F \
	2 /**< don't set next hop as dst_uri for
							   branch_route */
int add_uac(struct cell *t, struct sip_msg *request, str *uri, str *next_hop,
		str *path, struct proxy_l *proxy, struct socket_info *fsocket,
		snd_flags_t snd_flags, int proto, int flags, str *instance, str *ruid,
		str *location_ua);
#ifdef USE_DNS_FAILOVER
int add_uac_dns_fallback(struct cell *t, struct sip_msg *msg,
		struct ua_client *old_uac, int lock_replies);
#endif
int add_blind_uac(/* struct cell *t */ void);
int t_forward_nonack(
		struct cell *t, struct sip_msg *p_msg, struct proxy_l *p, int proto);
int t_forward_cancel(struct sip_msg *p_msg, struct proxy_l *proxy, int proto,
		struct cell **tran);
int t_forward_ack(struct sip_msg *p_msg);
int t_send_branch(struct cell *t, int branch, struct sip_msg *p_msg,
		struct proxy_l *proxy, int lock_replies);
int t_relay_cancel(struct sip_msg *p_msg);

int reparse_on_dns_failover_fixup(
		void *handle, str *gname, str *name, void **val);

#endif
