/*
 * Copyright (C) 2012-2014 Mamadou DIOP
 * Copyright (C) 2012-2014 Doubango Telecom <http://www.doubango.org>.
 *
 * This file is part of Open Source Doubango Framework.
 *
 * DOUBANGO 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 3 of the License, or
 * (at your option) any later version.
 *	
 * DOUBANGO 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 DOUBANGO.
 *
 */
 #ifndef TNET_ICE_CANDIDATE_H
 #define TNET_ICE_CANDIDATE_H
 
 #include "tinynet_config.h"
 
 #include "stun/tnet_stun_pkt.h"
 #include "stun/tnet_stun_attr.h"
 #include "stun/tnet_stun_utils.h"
 #include "tnet_socket.h"
 
 #include "tsk_params.h"
 
 TNET_BEGIN_DECLS
 
 #define TNET_ICE_CANDIDATE_TRANSPORT_UDP	"udp"
 #define TNET_ICE_CANDIDATE_TRANSPORT_TCP	"tcp"
 #define TNET_ICE_CANDIDATE_TRANSPORT_TLS	"tls"
 #define TNET_ICE_CANDIDATE_TRANSPORT_SCTP	"sctp"
 #define TNET_ICE_CANDIDATE_TRANSPORT_WS		"ws"
 #define TNET_ICE_CANDIDATE_TRANSPORT_WSS	"wss"
 
 #define TNET_ICE_CANDIDATE_TYPE_HOST	"host"
 #define TNET_ICE_CANDIDATE_TYPE_SRFLX	"srflx"
 #define TNET_ICE_CANDIDATE_TYPE_PRFLX	"prflx"
 #define TNET_ICE_CANDIDATE_TYPE_RELAY	"relay"
 
 #define TNET_ICE_CANDIDATE_PREF_HOST	126
 #define TNET_ICE_CANDIDATE_PREF_SRFLX	100
 #define TNET_ICE_CANDIDATE_PREF_PRFLX	110
 #define TNET_ICE_CANDIDATE_PREF_RELAY	0
 
 #define TNET_ICE_CANDIDATE_FOUNDATION_HOST	"fhost"
 #define TNET_ICE_CANDIDATE_FOUNDATION_SRFLX	"fsrflx"
 #define TNET_ICE_CANDIDATE_FOUNDATION_PRFLX	"fprflx"
 #define TNET_ICE_CANDIDATE_FOUNDATION_RELAY	"frelay"
 
 #define TNET_ICE_CANDIDATE_COMPID_RTP	1
 #define TNET_ICE_CANDIDATE_COMPID_RTCP	2
 
 #define TNET_ICE_CANDIDATE_FOUND_SIZE_PREF	15
 
 typedef enum tnet_ice_cand_type_e
 {
 	tnet_ice_cand_type_unknown,
 	tnet_ice_cand_type_host,
 	tnet_ice_cand_type_srflx,
 	tnet_ice_cand_type_prflx,
 	tnet_ice_cand_type_relay
 }
 tnet_ice_cand_type_t;
 
 typedef struct tnet_ice_candidate_s
 {
 	TSK_DECLARE_OBJECT;
 	
 	tnet_ice_cand_type_t type_e;
 	uint8_t foundation[33]; // 1*32ice-char
 	uint32_t comp_id; // 1*5DIGIT
 	char* transport_str; // "UP" / token
 	enum tnet_socket_type_e transport_e;
 	uint32_t priority; // 1*10DIGIST [1 - (2**31 - 1)]
 	char* cand_type_str; // "host" / "srflx" / "prflx" / "relay" / "token"
 	tnet_ip_t connection_addr;
 	tnet_port_t port;
 	tsk_params_L_t *extension_att_list;
 
 	tsk_bool_t is_ice_jingle;
 	tsk_bool_t is_rtp;
 	tsk_bool_t is_video;
 	uint16_t local_pref; // [0 - 65535]
 	
 	char* ufrag;
 	char* pwd;
 
 	struct tnet_socket_s* socket;
 	struct{
 		char* nonce;
 		char* realm;
 		char* srflx_addr;
 		tnet_stun_transac_id_t transac_id;
 		tnet_port_t srflx_port;
 	} stun;
 	struct {
 		struct tnet_turn_session_s* ss;
 		char* relay_addr;
 		tnet_port_t relay_port;
 	} turn;
 
 	char *tostring;
 }
 tnet_ice_candidate_t;
 
 typedef tsk_list_t tnet_ice_candidates_L_t;
 
 tnet_ice_candidate_t* tnet_ice_candidate_create(tnet_ice_cand_type_t type_e, struct tnet_socket_s* socket, tsk_bool_t is_ice_jingle, tsk_bool_t is_rtp, tsk_bool_t is_video, const char* ufrag, const char* pwd, const char *foundation);
 TINYNET_API tnet_ice_candidate_t* tnet_ice_candidate_parse(const char* str);
 int tnet_ice_candidate_set_credential(tnet_ice_candidate_t* self, const char* ufrag, const char* pwd);
 int tnet_ice_candidate_set_rflx_addr(tnet_ice_candidate_t* self, const char* addr, tnet_port_t port);
 TINYNET_API const char* tnet_ice_candidate_get_att_value(const tnet_ice_candidate_t* self, const char* att_name);
 int tnet_ice_candidate_set_local_pref(tnet_ice_candidate_t* self, uint16_t local_pref);
 TINYNET_API const char* tnet_ice_candidate_tostring(tnet_ice_candidate_t* self);
 int tnet_ice_candidate_send_stun_bind_request(tnet_ice_candidate_t* self, const struct sockaddr_storage* server_addr, const char* username, const char* password);
 int tnet_ice_candidate_process_stun_response(tnet_ice_candidate_t* self, const tnet_stun_pkt_resp_t* response, tnet_fd_t fd);
 const tnet_ice_candidate_t* tnet_ice_candidate_find_by_fd(tnet_ice_candidates_L_t* candidates, tnet_fd_t fd);
 const char* tnet_ice_candidate_get_ufrag(const tnet_ice_candidate_t* self);
 const char* tnet_ice_candidate_get_pwd(const tnet_ice_candidate_t* self);
 
 TNET_END_DECLS
 
 #endif /* TNET_ICE_CANDIDATE_H */