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#ifndef __PJ_STUN_H__
#define __PJ_STUN_H__
#include <pj/types.h>
#include <pj/sock.h>
PJ_BEGIN_DECL
#define PJ_STUN_MAX_ATTR 16
typedef enum pj_stun_msg_type
{
PJ_STUN_BINDING_REQUEST = 0x0001,
PJ_STUN_BINDING_RESPONSE = 0x0101,
PJ_STUN_BINDING_ERROR_RESPONSE = 0x0111,
PJ_STUN_SHARED_SECRET_REQUEST = 0x0002,
PJ_STUN_SHARED_SECRET_RESPONSE = 0x0102,
PJ_STUN_SHARED_SECRET_ERROR_RESPONSE = 0x0112
} pj_stun_msg_type;
typedef enum pj_stun_attr_type
{
PJ_STUN_ATTR_MAPPED_ADDR = 1,
PJ_STUN_ATTR_RESPONSE_ADDR,
PJ_STUN_ATTR_CHANGE_REQUEST,
PJ_STUN_ATTR_SOURCE_ADDR,
PJ_STUN_ATTR_CHANGED_ADDR,
PJ_STUN_ATTR_USERNAME,
PJ_STUN_ATTR_PASSWORD,
PJ_STUN_ATTR_MESSAGE_INTEGRITY,
PJ_STUN_ATTR_ERROR_CODE,
PJ_STUN_ATTR_UNKNOWN_ATTRIBUTES,
PJ_STUN_ATTR_REFLECTED_FORM
} pj_stun_attr_type;
typedef struct pj_stun_msg_hdr
{
pj_uint16_t type;
pj_uint16_t length;
pj_uint32_t tsx[4];
} pj_stun_msg_hdr;
typedef struct pj_stun_attr_hdr
{
pj_uint16_t type;
pj_uint16_t length;
} pj_stun_attr_hdr;
typedef struct pj_stun_mapped_addr_attr
{
pj_stun_attr_hdr hdr;
pj_uint8_t ignored;
pj_uint8_t family;
pj_uint16_t port;
pj_uint32_t addr;
} pj_stun_mapped_addr_attr;
typedef pj_stun_mapped_addr_attr pj_stun_response_addr_attr;
typedef pj_stun_mapped_addr_attr pj_stun_changed_addr_attr;
typedef pj_stun_mapped_addr_attr pj_stun_src_addr_attr;
typedef pj_stun_mapped_addr_attr pj_stun_reflected_form_attr;
typedef struct pj_stun_change_request_attr
{
pj_stun_attr_hdr hdr;
pj_uint32_t value;
} pj_stun_change_request_attr;
typedef struct pj_stun_username_attr
{
pj_stun_attr_hdr hdr;
pj_uint32_t value[1];
} pj_stun_username_attr;
typedef pj_stun_username_attr pj_stun_password_attr;
typedef struct pj_stun_error_code_attr
{
pj_stun_attr_hdr hdr;
pj_uint16_t ignored;
pj_uint8_t err_class;
pj_uint8_t number;
char reason[4];
} pj_stun_error_code_attr;
typedef struct pj_stun_msg
{
pj_stun_msg_hdr *hdr;
int attr_count;
pj_stun_attr_hdr *attr[PJ_STUN_MAX_ATTR];
} pj_stun_msg;
/* STUN message API (stun.c). */
PJ_DECL(pj_status_t) pj_stun_create_bind_req( pj_pool_t *pool,
void **msg, pj_size_t *len,
pj_uint32_t id_hi,
pj_uint32_t id_lo);
PJ_DECL(pj_status_t) pj_stun_parse_msg( void *buf, pj_size_t len,
pj_stun_msg *msg);
PJ_DECL(void*) pj_stun_msg_find_attr( pj_stun_msg *msg, pj_stun_attr_type t);
/* STUN simple client API (stun_client.c) */
enum pj_stun_err_code {
PJ_STUN_ERR_MEMORY = (-2),
PJ_STUN_ERR_RESOLVE = (-3),
PJ_STUN_ERR_TRANSPORT = (-4),
PJ_STUN_ERR_INVALID_MSG = (-5),
PJ_STUN_ERR_NO_RESPONSE = (-6),
PJ_STUN_ERR_SYMETRIC = (-7),
};
PJ_DECL(pj_status_t) pj_stun_get_mapped_addr( pj_pool_factory *pf,
int sock_cnt, pj_sock_t sock[],
const pj_str_t *srv1, int port1,
const pj_str_t *srv2, int port2,
pj_sockaddr_in mapped_addr[]);
PJ_DECL(const char*) pj_stun_get_err_msg(pj_status_t status);
PJ_END_DECL
#endif /* __PJ_STUN_H__ */
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