dn_udp.h

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#ifndef DN_UDP_H_
#define DN_UDP_H_

#ifndef _DN_EXP_UDP
#define _DN_EXP_UDP
#endif /* _DN_EXP_UDP */

#define UDP_MAX_PACKET (503)

#define UDP_MAX_DATA (488)

struct udpaddr
{
  int flag;                
  struct sockaddr_in addr; 
};

#ifdef __cplusplus
extern "C"
{
#endif

  _DN_EXP_UDP HRESULT
  udp_open(void *param, int *sock);

  _DN_EXP_UDP HRESULT
  udp_close(int *sock);

  _DN_EXP_UDP HRESULT
  udp_send(int sock, const char *buf, uint32_t len_buf, void *arg);

  _DN_EXP_UDP HRESULT
  udp_recv(int sock, char *buf, uint32_t len_buf, uint32_t *len_recved,
      uint32_t timeout, void *arg);

  _DN_EXP_UDP HRESULT
  udp_set_timeout(int sock, uint32_t timeout);

  _DN_EXP_UDP HRESULT
  udp_clear(int sock, uint32_t timeout);

  _DN_EXP_UDP HRESULT
  udp_check_sockaddr(const struct sockaddr_in *sock_to,
      const struct sockaddr_in *sock_from);

#ifdef __cplusplus
}
#endif

#endif /* DN_UDP_H_ */