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#include "../libtimer/timer.h"
#include "../libosmocc/endpoint.h"
#include <sofia-sip/nua.h>
#include <sofia-sip/stun.h>
#define STUN_RETRY_TIMER 10
#define REGISTER_RETRY_TIMER 10
enum reg_state {
REGISTER_STATE_NULL = 0,
REGISTER_STATE_UNREGISTERED,
REGISTER_STATE_REGISTERING,
REGISTER_STATE_REGISTERED,
REGISTER_STATE_FAILED,
};
enum stun_state {
STUN_STATE_NULL = 0,
STUN_STATE_UNRESOLVED,
STUN_STATE_RESOLVING,
STUN_STATE_RESOLVED,
STUN_STATE_FAILED,
};
enum sip_state {
SIP_STATE_IDLE = 0,
SIP_STATE_OUT_INVITE, /* invite sent, waiting for replies */
SIP_STATE_IN_INVITE, /* invite received, sending replies */
SIP_STATE_CONNECT, /* active call */
SIP_STATE_OUT_RELEASE, /* outgoing release, sending REL_CNF */
};
struct sip_call;
typedef struct sip_endpoint {
/* setting flags */
int send_no_ringing_after_progress;
int receive_no_ringing_after_progress;
/* endpoint */
osmo_cc_endpoint_t cc_ep;
const char *name;
struct sip_call *call_list;
/* SIP settings */
const char *local_user;
const char *local_peer;
const char *remote_user;
const char *remote_peer;
const char *asserted_id;
int local_register;
int remote_register;
const char *register_user;
const char *register_peer;
int authenticate_local;
int authenticate_remote;
const char *auth_user;
const char *auth_password;
const char *auth_realm;
/* NAT help */
char public_ip[256];
const char *stun_server;
/* timers */
int register_interval;
int options_interval;
int stun_interval;
struct timer stun_retry_timer;
struct timer register_retry_timer;
struct timer register_option_timer;
/* SIP stack */
su_root_t *su_root;
nua_t *nua;
nua_handle_t *register_handle;
int shutdown_complete;
/* register process */
char remote_contact[256];
char register_nonce[64];
char invite_nonce[64];
enum reg_state register_state;
enum stun_state stun_state;
/* stun process */
stun_handle_t *stun_handle;
su_socket_t stun_socket;
} sip_endpoint_t;
typedef struct sip_call {
struct sip_call *next;
osmo_cc_call_t *cc_call;
uint32_t cc_callref;
sip_endpoint_t *sip_ep;
enum sip_state state;
nua_handle_t *nua_handle;
struct timer invite_option_timer;
char *sdp_request, *sdp_response;
int sdp_sent;
int alerting_sent;
} call_t;
void cc_message(osmo_cc_endpoint_t *ep, uint32_t callref, osmo_cc_msg_t *msg);
sip_endpoint_t *sip_endpoint_create(int send_no_ringing_after_progress, int receive_no_ringing_after_progress, const char *name, const char *local_user, const char *local_peer, const char *remote_user, const char *remote_peer, const char *asserted_id, int local_register, int remote_register, const char *register_user, const char *register_peer, int authenticate_local, int authenticate_remote, const char *auth_user, const char *auth_password, const char *auth_realm, const char *public_ip, const char *stun_server, int register_interval, int options_interval, int stun_interval, int expires);
void sip_endpoint_destroy(sip_endpoint_t *sip_ep);
int sip_init(int debug_level);
void sip_exit(void);
void sip_handle(sip_endpoint_t *sip_ep);
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