net_udp.h

完整的RTP RTSP代码库

/*
 * FILE:    net_udp.h
 * AUTHORS: Colin Perkins
 * 
 * Copyright (c) 1998-2000 University College London
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, is permitted provided that the following conditions 
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the Computer Science
 *      Department at University College London
 * 4. Neither the name of the University nor of the Department may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _NET_UDP
#define _NET_UDP
#include "rtp.h"

#if defined(__cplusplus)
extern "C" {
#endif

  typedef struct udp_set_ udp_set;

  udp_set *udp_init_for_session(void);
  void udp_close_session(udp_set *s);
int         udp_addr_valid(const char *addr);


socket_udp *udp_init(const char *addr, uint16_t rx_port, uint16_t tx_port, int ttl);
socket_udp *udp_init_if(const char *addr, const char *iface, uint16_t rx_port, uint16_t tx_port, int ttl);
socket_udp *udp_init_for_receive(const char *iface, uint16_t rx_port, int is_ipv4);
void        udp_exit(socket_udp *s);

int         udp_send(socket_udp *s, const uint8_t *buffer, uint32_t buflen);
int         udp_sendto(socket_udp *s, const uint8_t *buffer, uint32_t buflen,  const struct sockaddr *to, const socklen_t tolen);
#ifndef _WIN32
int udp_send_iov(socket_udp *s, struct iovec *iov, int count);
int udp_sendto_iov(socket_udp *s, struct iovec *iov, int count,
		   const struct sockaddr *to, const socklen_t tolen);
#endif

uint32_t         udp_recv(socket_udp *s, uint8_t *buffer, uint32_t buflen);

uint32_t  udp_recv_with_source(socket_udp *s, uint8_t *buffer, uint32_t buflen, 
			       struct sockaddr *source, socklen_t *source_len);

char *udp_host_addr(socket_udp *s);
int         udp_fd(socket_udp *s);

  int         udp_select(udp_set *session, struct timeval *timeout);
  void        udp_fd_zero(udp_set *session);
  void        udp_fd_set(udp_set *session, socket_udp *s);
  int         udp_fd_isset(udp_set *session, socket_udp *s);

void  udp_set_multicast_src(const char* src);

#if defined(__cplusplus)
}
#endif

#endif