2001-07-22 14:18:56 +00:00
|
|
|
/*
|
|
|
|
* UDP prototype streaming system
|
2009-01-19 15:46:40 +00:00
|
|
|
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
|
2001-07-22 14:18:56 +00:00
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|
*
|
2011-03-18 17:35:10 +00:00
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|
|
* This file is part of Libav.
|
2006-10-07 15:30:46 +00:00
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|
|
*
|
2011-03-18 17:35:10 +00:00
|
|
|
* Libav is free software; you can redistribute it and/or
|
2002-05-25 22:34:32 +00:00
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|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
* License as published by the Free Software Foundation; either
|
2006-10-07 15:30:46 +00:00
|
|
|
* version 2.1 of the License, or (at your option) any later version.
|
2001-07-22 14:18:56 +00:00
|
|
|
*
|
2011-03-18 17:35:10 +00:00
|
|
|
* Libav is distributed in the hope that it will be useful,
|
2001-07-22 14:18:56 +00:00
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
2002-05-25 22:34:32 +00:00
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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|
|
|
* Lesser General Public License for more details.
|
2001-07-22 14:18:56 +00:00
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|
|
*
|
2002-05-25 22:34:32 +00:00
|
|
|
* You should have received a copy of the GNU Lesser General Public
|
2011-03-18 17:35:10 +00:00
|
|
|
* License along with Libav; if not, write to the Free Software
|
2006-01-12 22:43:26 +00:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
2001-07-22 14:18:56 +00:00
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|
*/
|
2008-04-16 16:52:35 +00:00
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/**
|
2010-04-20 14:45:34 +00:00
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|
* @file
|
2008-04-16 16:52:35 +00:00
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|
* UDP protocol
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|
*/
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|
2008-08-25 06:20:00 +00:00
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|
|
#define _BSD_SOURCE /* Needed for using struct ip_mreq with recent glibc */
|
2011-05-11 15:52:51 +00:00
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|
|
2001-08-13 21:37:10 +00:00
|
|
|
#include "avformat.h"
|
2011-03-08 09:35:52 +00:00
|
|
|
#include "avio_internal.h"
|
2011-02-16 08:52:38 +00:00
|
|
|
#include "libavutil/parseutils.h"
|
2011-11-09 09:45:01 +00:00
|
|
|
#include "libavutil/avstring.h"
|
2010-03-14 23:59:48 +00:00
|
|
|
#include "internal.h"
|
2007-02-04 17:05:44 +00:00
|
|
|
#include "network.h"
|
2007-11-21 16:33:06 +00:00
|
|
|
#include "os_support.h"
|
2011-04-04 18:40:38 +00:00
|
|
|
#include "url.h"
|
2001-07-22 14:18:56 +00:00
|
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|
2005-08-12 14:01:03 +00:00
|
|
|
#ifndef IPV6_ADD_MEMBERSHIP
|
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|
|
#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
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|
|
#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
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|
|
#endif
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|
2001-07-22 14:18:56 +00:00
|
|
|
typedef struct {
|
2002-07-24 17:45:41 +00:00
|
|
|
int udp_fd;
|
|
|
|
int ttl;
|
2008-11-12 21:40:53 +00:00
|
|
|
int buffer_size;
|
2002-07-24 17:45:41 +00:00
|
|
|
int is_multicast;
|
|
|
|
int local_port;
|
2006-10-28 17:16:18 +00:00
|
|
|
int reuse_socket;
|
2004-11-09 00:27:16 +00:00
|
|
|
struct sockaddr_storage dest_addr;
|
2008-05-11 10:53:21 +00:00
|
|
|
int dest_addr_len;
|
2010-10-08 08:42:30 +00:00
|
|
|
int is_connected;
|
2001-07-22 14:18:56 +00:00
|
|
|
} UDPContext;
|
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|
|
#define UDP_TX_BUF_SIZE 32768
|
2007-08-16 22:12:03 +00:00
|
|
|
#define UDP_MAX_PKT_SIZE 65536
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2012-06-19 12:37:06 +00:00
|
|
|
static void log_net_error(void *ctx, int level, const char* prefix)
|
|
|
|
{
|
|
|
|
char errbuf[100];
|
|
|
|
av_strerror(ff_neterrno(), errbuf, sizeof(errbuf));
|
|
|
|
av_log(ctx, level, "%s: %s\n", prefix, errbuf);
|
|
|
|
}
|
|
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|
|
2010-01-22 16:12:55 +00:00
|
|
|
static int udp_set_multicast_ttl(int sockfd, int mcastTTL,
|
|
|
|
struct sockaddr *addr)
|
|
|
|
{
|
2007-11-14 07:42:46 +00:00
|
|
|
#ifdef IP_MULTICAST_TTL
|
2004-11-09 00:27:16 +00:00
|
|
|
if (addr->sa_family == AF_INET) {
|
|
|
|
if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL, sizeof(mcastTTL)) < 0) {
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_MULTICAST_TTL)");
|
2004-11-09 00:27:16 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
2007-11-14 07:42:46 +00:00
|
|
|
#endif
|
2010-01-21 15:42:05 +00:00
|
|
|
#if defined(IPPROTO_IPV6) && defined(IPV6_MULTICAST_HOPS)
|
2004-11-09 00:27:16 +00:00
|
|
|
if (addr->sa_family == AF_INET6) {
|
|
|
|
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &mcastTTL, sizeof(mcastTTL)) < 0) {
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_MULTICAST_HOPS)");
|
2004-11-09 00:27:16 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
2007-11-14 07:42:46 +00:00
|
|
|
#endif
|
2004-11-09 00:27:16 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-01-22 16:12:55 +00:00
|
|
|
static int udp_join_multicast_group(int sockfd, struct sockaddr *addr)
|
|
|
|
{
|
2007-11-14 07:42:46 +00:00
|
|
|
#ifdef IP_ADD_MEMBERSHIP
|
2004-11-09 00:27:16 +00:00
|
|
|
if (addr->sa_family == AF_INET) {
|
2007-11-14 07:42:46 +00:00
|
|
|
struct ip_mreq mreq;
|
|
|
|
|
2004-11-09 00:27:16 +00:00
|
|
|
mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
|
|
|
|
mreq.imr_interface.s_addr= INADDR_ANY;
|
|
|
|
if (setsockopt(sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) {
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_ADD_MEMBERSHIP)");
|
2004-11-09 00:27:16 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
2007-11-14 07:42:46 +00:00
|
|
|
#endif
|
2010-09-20 06:38:40 +00:00
|
|
|
#if HAVE_STRUCT_IPV6_MREQ && defined(IPPROTO_IPV6)
|
2004-11-09 00:27:16 +00:00
|
|
|
if (addr->sa_family == AF_INET6) {
|
2007-11-14 07:42:46 +00:00
|
|
|
struct ipv6_mreq mreq6;
|
|
|
|
|
2004-11-09 00:27:16 +00:00
|
|
|
memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr));
|
|
|
|
mreq6.ipv6mr_interface= 0;
|
|
|
|
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_ADD_MEMBERSHIP)");
|
2004-11-09 00:27:16 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
2007-11-14 07:42:46 +00:00
|
|
|
#endif
|
2004-11-09 00:27:16 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-01-22 16:12:55 +00:00
|
|
|
static int udp_leave_multicast_group(int sockfd, struct sockaddr *addr)
|
|
|
|
{
|
2007-11-14 07:42:46 +00:00
|
|
|
#ifdef IP_DROP_MEMBERSHIP
|
2004-11-09 00:27:16 +00:00
|
|
|
if (addr->sa_family == AF_INET) {
|
2007-11-14 07:42:46 +00:00
|
|
|
struct ip_mreq mreq;
|
|
|
|
|
2004-11-09 00:27:16 +00:00
|
|
|
mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
|
|
|
|
mreq.imr_interface.s_addr= INADDR_ANY;
|
|
|
|
if (setsockopt(sockfd, IPPROTO_IP, IP_DROP_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) {
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_DROP_MEMBERSHIP)");
|
2004-11-09 00:27:16 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
2007-11-14 07:42:46 +00:00
|
|
|
#endif
|
2010-09-20 06:38:40 +00:00
|
|
|
#if HAVE_STRUCT_IPV6_MREQ && defined(IPPROTO_IPV6)
|
2004-11-09 00:27:16 +00:00
|
|
|
if (addr->sa_family == AF_INET6) {
|
2007-11-14 07:42:46 +00:00
|
|
|
struct ipv6_mreq mreq6;
|
|
|
|
|
2004-11-09 00:27:16 +00:00
|
|
|
memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr));
|
|
|
|
mreq6.ipv6mr_interface= 0;
|
|
|
|
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_DROP_MEMBERSHIP)");
|
2004-11-09 00:27:16 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
2007-11-14 07:42:46 +00:00
|
|
|
#endif
|
2004-11-09 00:27:16 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-01-22 16:12:55 +00:00
|
|
|
static struct addrinfo* udp_resolve_host(const char *hostname, int port,
|
|
|
|
int type, int family, int flags)
|
|
|
|
{
|
2011-06-06 12:13:02 +00:00
|
|
|
struct addrinfo hints = { 0 }, *res = 0;
|
2004-11-09 00:27:16 +00:00
|
|
|
int error;
|
|
|
|
char sport[16];
|
2007-10-31 07:02:30 +00:00
|
|
|
const char *node = 0, *service = "0";
|
2004-11-09 00:27:16 +00:00
|
|
|
|
|
|
|
if (port > 0) {
|
2005-01-12 00:59:42 +00:00
|
|
|
snprintf(sport, sizeof(sport), "%d", port);
|
2004-11-09 00:27:16 +00:00
|
|
|
service = sport;
|
|
|
|
}
|
|
|
|
if ((hostname) && (hostname[0] != '\0') && (hostname[0] != '?')) {
|
|
|
|
node = hostname;
|
|
|
|
}
|
2007-10-31 07:08:12 +00:00
|
|
|
hints.ai_socktype = type;
|
|
|
|
hints.ai_family = family;
|
|
|
|
hints.ai_flags = flags;
|
|
|
|
if ((error = getaddrinfo(node, service, &hints, &res))) {
|
2010-02-28 22:33:22 +00:00
|
|
|
res = NULL;
|
2010-01-22 16:10:08 +00:00
|
|
|
av_log(NULL, AV_LOG_ERROR, "udp_resolve_host: %s\n", gai_strerror(error));
|
2007-10-31 07:08:12 +00:00
|
|
|
}
|
|
|
|
|
2004-11-09 00:27:16 +00:00
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
2012-06-21 11:19:56 +00:00
|
|
|
static int udp_set_multicast_sources(int sockfd, struct sockaddr *addr,
|
|
|
|
int addr_len, char **sources,
|
|
|
|
int nb_sources, int include)
|
|
|
|
{
|
|
|
|
#if HAVE_STRUCT_GROUP_SOURCE_REQ && defined(MCAST_BLOCK_SOURCE) && !defined(_WIN32)
|
|
|
|
/* These ones are available in the microsoft SDK, but don't seem to work
|
|
|
|
* as on linux, so just prefer the v4-only approach there for now. */
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < nb_sources; i++) {
|
|
|
|
struct group_source_req mreqs;
|
|
|
|
int level = addr->sa_family == AF_INET ? IPPROTO_IP : IPPROTO_IPV6;
|
|
|
|
struct addrinfo *sourceaddr = udp_resolve_host(sources[i], 0,
|
|
|
|
SOCK_DGRAM, AF_UNSPEC,
|
2013-07-26 18:54:29 +00:00
|
|
|
0);
|
2012-06-21 11:19:56 +00:00
|
|
|
if (!sourceaddr)
|
|
|
|
return AVERROR(ENOENT);
|
|
|
|
|
|
|
|
mreqs.gsr_interface = 0;
|
|
|
|
memcpy(&mreqs.gsr_group, addr, addr_len);
|
|
|
|
memcpy(&mreqs.gsr_source, sourceaddr->ai_addr, sourceaddr->ai_addrlen);
|
|
|
|
freeaddrinfo(sourceaddr);
|
|
|
|
|
|
|
|
if (setsockopt(sockfd, level,
|
|
|
|
include ? MCAST_JOIN_SOURCE_GROUP : MCAST_BLOCK_SOURCE,
|
|
|
|
(const void *)&mreqs, sizeof(mreqs)) < 0) {
|
|
|
|
if (include)
|
|
|
|
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(MCAST_JOIN_SOURCE_GROUP)");
|
|
|
|
else
|
|
|
|
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(MCAST_BLOCK_SOURCE)");
|
|
|
|
return ff_neterrno();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#elif HAVE_STRUCT_IP_MREQ_SOURCE && defined(IP_BLOCK_SOURCE)
|
|
|
|
int i;
|
|
|
|
if (addr->sa_family != AF_INET) {
|
|
|
|
av_log(NULL, AV_LOG_ERROR,
|
|
|
|
"Setting multicast sources only supported for IPv4\n");
|
|
|
|
return AVERROR(EINVAL);
|
|
|
|
}
|
|
|
|
for (i = 0; i < nb_sources; i++) {
|
|
|
|
struct ip_mreq_source mreqs;
|
|
|
|
struct addrinfo *sourceaddr = udp_resolve_host(sources[i], 0,
|
|
|
|
SOCK_DGRAM, AF_UNSPEC,
|
2013-07-26 18:54:29 +00:00
|
|
|
0);
|
2012-06-21 11:19:56 +00:00
|
|
|
if (!sourceaddr)
|
|
|
|
return AVERROR(ENOENT);
|
|
|
|
if (sourceaddr->ai_addr->sa_family != AF_INET) {
|
|
|
|
freeaddrinfo(sourceaddr);
|
|
|
|
av_log(NULL, AV_LOG_ERROR, "%s is of incorrect protocol family\n",
|
|
|
|
sources[i]);
|
|
|
|
return AVERROR(EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
mreqs.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
|
|
|
|
mreqs.imr_interface.s_addr = INADDR_ANY;
|
|
|
|
mreqs.imr_sourceaddr.s_addr = ((struct sockaddr_in *)sourceaddr->ai_addr)->sin_addr.s_addr;
|
|
|
|
freeaddrinfo(sourceaddr);
|
|
|
|
|
|
|
|
if (setsockopt(sockfd, IPPROTO_IP,
|
|
|
|
include ? IP_ADD_SOURCE_MEMBERSHIP : IP_BLOCK_SOURCE,
|
|
|
|
(const void *)&mreqs, sizeof(mreqs)) < 0) {
|
|
|
|
if (include)
|
|
|
|
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_ADD_SOURCE_MEMBERSHIP)");
|
|
|
|
else
|
|
|
|
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_BLOCK_SOURCE)");
|
|
|
|
return ff_neterrno();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
return AVERROR(ENOSYS);
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
}
|
2010-01-22 16:12:55 +00:00
|
|
|
static int udp_set_url(struct sockaddr_storage *addr,
|
|
|
|
const char *hostname, int port)
|
|
|
|
{
|
2004-11-09 00:27:16 +00:00
|
|
|
struct addrinfo *res0;
|
2007-11-14 08:16:51 +00:00
|
|
|
int addr_len;
|
|
|
|
|
2010-01-22 16:10:08 +00:00
|
|
|
res0 = udp_resolve_host(hostname, port, SOCK_DGRAM, AF_UNSPEC, 0);
|
2007-07-19 15:23:32 +00:00
|
|
|
if (res0 == 0) return AVERROR(EIO);
|
2007-11-14 08:16:51 +00:00
|
|
|
memcpy(addr, res0->ai_addr, res0->ai_addrlen);
|
|
|
|
addr_len = res0->ai_addrlen;
|
2004-11-09 00:27:16 +00:00
|
|
|
freeaddrinfo(res0);
|
2007-11-14 08:16:51 +00:00
|
|
|
|
|
|
|
return addr_len;
|
2004-11-09 00:27:16 +00:00
|
|
|
}
|
|
|
|
|
2011-11-09 09:45:01 +00:00
|
|
|
static int udp_socket_create(UDPContext *s, struct sockaddr_storage *addr,
|
2012-10-26 18:46:37 +00:00
|
|
|
socklen_t *addr_len, const char *localaddr)
|
2007-11-15 14:26:52 +00:00
|
|
|
{
|
2004-11-09 00:27:16 +00:00
|
|
|
int udp_fd = -1;
|
2005-07-21 21:10:23 +00:00
|
|
|
struct addrinfo *res0 = NULL, *res = NULL;
|
2007-10-31 07:27:38 +00:00
|
|
|
int family = AF_UNSPEC;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2007-10-31 07:27:38 +00:00
|
|
|
if (((struct sockaddr *) &s->dest_addr)->sa_family)
|
|
|
|
family = ((struct sockaddr *) &s->dest_addr)->sa_family;
|
2011-11-09 09:45:01 +00:00
|
|
|
res0 = udp_resolve_host(localaddr[0] ? localaddr : NULL, s->local_port,
|
|
|
|
SOCK_DGRAM, family, AI_PASSIVE);
|
2007-10-31 07:08:12 +00:00
|
|
|
if (res0 == 0)
|
|
|
|
goto fail;
|
|
|
|
for (res = res0; res; res=res->ai_next) {
|
|
|
|
udp_fd = socket(res->ai_family, SOCK_DGRAM, 0);
|
2012-06-19 14:59:57 +00:00
|
|
|
if (udp_fd != -1) break;
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(NULL, AV_LOG_ERROR, "socket");
|
2007-10-31 07:08:12 +00:00
|
|
|
}
|
2005-07-21 21:10:23 +00:00
|
|
|
|
|
|
|
if (udp_fd < 0)
|
2004-11-09 00:27:16 +00:00
|
|
|
goto fail;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2007-11-15 14:26:52 +00:00
|
|
|
memcpy(addr, res->ai_addr, res->ai_addrlen);
|
|
|
|
*addr_len = res->ai_addrlen;
|
2004-11-09 00:27:16 +00:00
|
|
|
|
2007-11-15 14:26:52 +00:00
|
|
|
freeaddrinfo(res0);
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2004-11-09 00:27:16 +00:00
|
|
|
return udp_fd;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2004-11-09 00:27:16 +00:00
|
|
|
fail:
|
|
|
|
if (udp_fd >= 0)
|
|
|
|
closesocket(udp_fd);
|
2005-02-24 19:08:50 +00:00
|
|
|
if(res0)
|
|
|
|
freeaddrinfo(res0);
|
2004-11-09 00:27:16 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2007-11-15 14:26:52 +00:00
|
|
|
static int udp_port(struct sockaddr_storage *addr, int addr_len)
|
|
|
|
{
|
2008-02-11 03:30:42 +00:00
|
|
|
char sbuf[sizeof(int)*3+1];
|
2012-06-19 12:28:48 +00:00
|
|
|
int error;
|
2007-11-15 14:26:52 +00:00
|
|
|
|
2012-06-19 12:28:48 +00:00
|
|
|
if ((error = getnameinfo((struct sockaddr *)addr, addr_len, NULL, 0, sbuf, sizeof(sbuf), NI_NUMERICSERV)) != 0) {
|
|
|
|
av_log(NULL, AV_LOG_ERROR, "getnameinfo: %s\n", gai_strerror(error));
|
2007-11-15 14:26:52 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return strtol(sbuf, NULL, 10);
|
|
|
|
}
|
|
|
|
|
2004-11-09 00:27:16 +00:00
|
|
|
|
2002-07-24 17:45:41 +00:00
|
|
|
/**
|
|
|
|
* If no filename is given to av_open_input_file because you want to
|
|
|
|
* get the local port first, then you must call this function to set
|
|
|
|
* the remote server address.
|
|
|
|
*
|
|
|
|
* url syntax: udp://host:port[?option=val...]
|
2008-04-15 11:23:07 +00:00
|
|
|
* option: 'ttl=n' : set the ttl value (for multicast only)
|
2002-07-24 17:45:41 +00:00
|
|
|
* 'localport=n' : set the local port
|
2003-02-09 18:06:23 +00:00
|
|
|
* 'pkt_size=n' : set max packet size
|
2006-10-28 17:16:18 +00:00
|
|
|
* 'reuse=1' : enable reusing the socket
|
2002-07-24 17:45:41 +00:00
|
|
|
*
|
2010-07-02 10:49:29 +00:00
|
|
|
* @param h media file context
|
2002-07-24 17:45:41 +00:00
|
|
|
* @param uri of the remote server
|
|
|
|
* @return zero if no error.
|
|
|
|
*/
|
2011-03-08 09:35:52 +00:00
|
|
|
int ff_udp_set_remote_url(URLContext *h, const char *uri)
|
2002-07-24 17:45:41 +00:00
|
|
|
{
|
|
|
|
UDPContext *s = h->priv_data;
|
2011-01-06 15:16:50 +00:00
|
|
|
char hostname[256], buf[10];
|
2002-07-24 17:45:41 +00:00
|
|
|
int port;
|
2011-01-06 15:16:50 +00:00
|
|
|
const char *p;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2010-06-27 14:16:46 +00:00
|
|
|
av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2002-07-24 17:45:41 +00:00
|
|
|
/* set the destination address */
|
2007-11-14 08:16:51 +00:00
|
|
|
s->dest_addr_len = udp_set_url(&s->dest_addr, hostname, port);
|
|
|
|
if (s->dest_addr_len < 0) {
|
2007-07-19 15:23:32 +00:00
|
|
|
return AVERROR(EIO);
|
2007-11-14 08:16:51 +00:00
|
|
|
}
|
2010-10-07 07:58:56 +00:00
|
|
|
s->is_multicast = ff_is_multicast_address((struct sockaddr*) &s->dest_addr);
|
2011-01-06 15:16:50 +00:00
|
|
|
p = strchr(uri, '?');
|
|
|
|
if (p) {
|
2011-02-16 08:52:38 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "connect", p)) {
|
2011-01-06 15:16:50 +00:00
|
|
|
int was_connected = s->is_connected;
|
|
|
|
s->is_connected = strtol(buf, NULL, 10);
|
|
|
|
if (s->is_connected && !was_connected) {
|
|
|
|
if (connect(s->udp_fd, (struct sockaddr *) &s->dest_addr,
|
|
|
|
s->dest_addr_len)) {
|
|
|
|
s->is_connected = 0;
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(h, AV_LOG_ERROR, "connect");
|
2011-01-06 15:16:50 +00:00
|
|
|
return AVERROR(EIO);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2007-11-14 08:16:51 +00:00
|
|
|
|
2002-07-24 17:45:41 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2010-06-14 09:09:59 +00:00
|
|
|
* Return the local port used by the UDP connection
|
2010-07-02 10:49:29 +00:00
|
|
|
* @param h media file context
|
2002-07-24 17:45:41 +00:00
|
|
|
* @return the local port number
|
|
|
|
*/
|
2011-03-08 09:35:52 +00:00
|
|
|
int ff_udp_get_local_port(URLContext *h)
|
2002-07-24 17:45:41 +00:00
|
|
|
{
|
|
|
|
UDPContext *s = h->priv_data;
|
|
|
|
return s->local_port;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Return the udp file handle for select() usage to wait for several RTP
|
|
|
|
* streams at the same time.
|
|
|
|
* @param h media file context
|
|
|
|
*/
|
2011-02-03 11:39:11 +00:00
|
|
|
static int udp_get_file_handle(URLContext *h)
|
2002-07-24 17:45:41 +00:00
|
|
|
{
|
|
|
|
UDPContext *s = h->priv_data;
|
|
|
|
return s->udp_fd;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* put it in UDP context */
|
2001-07-22 14:18:56 +00:00
|
|
|
/* return non zero if error */
|
|
|
|
static int udp_open(URLContext *h, const char *uri, int flags)
|
|
|
|
{
|
2011-11-09 09:45:01 +00:00
|
|
|
char hostname[1024], localaddr[1024] = "";
|
2008-12-07 17:29:09 +00:00
|
|
|
int port, udp_fd = -1, tmp, bind_ret = -1;
|
2011-12-01 09:44:21 +00:00
|
|
|
UDPContext *s = h->priv_data;
|
2005-02-24 19:08:50 +00:00
|
|
|
int is_output;
|
2002-07-24 17:45:41 +00:00
|
|
|
const char *p;
|
|
|
|
char buf[256];
|
2007-11-15 14:26:52 +00:00
|
|
|
struct sockaddr_storage my_addr;
|
2012-10-26 18:46:37 +00:00
|
|
|
socklen_t len;
|
2011-02-07 21:14:43 +00:00
|
|
|
int reuse_specified = 0;
|
2012-06-21 11:19:56 +00:00
|
|
|
int i, include = 0, num_sources = 0;
|
|
|
|
char *sources[32];
|
2001-07-22 14:18:56 +00:00
|
|
|
|
|
|
|
h->is_streamed = 1;
|
2003-02-09 18:06:23 +00:00
|
|
|
h->max_packet_size = 1472;
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2011-05-09 13:56:56 +00:00
|
|
|
is_output = !(flags & AVIO_FLAG_READ);
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2002-07-24 17:45:41 +00:00
|
|
|
s->ttl = 16;
|
2008-11-12 21:40:53 +00:00
|
|
|
s->buffer_size = is_output ? UDP_TX_BUF_SIZE : UDP_MAX_PKT_SIZE;
|
|
|
|
|
2002-07-24 17:45:41 +00:00
|
|
|
p = strchr(uri, '?');
|
|
|
|
if (p) {
|
2011-02-16 08:52:38 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "reuse", p)) {
|
2011-06-17 07:08:23 +00:00
|
|
|
char *endptr = NULL;
|
2011-02-07 21:14:43 +00:00
|
|
|
s->reuse_socket = strtol(buf, &endptr, 10);
|
|
|
|
/* assume if no digits were found it is a request to enable it */
|
|
|
|
if (buf == endptr)
|
|
|
|
s->reuse_socket = 1;
|
|
|
|
reuse_specified = 1;
|
|
|
|
}
|
2011-02-16 08:52:38 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "ttl", p)) {
|
2002-07-24 17:45:41 +00:00
|
|
|
s->ttl = strtol(buf, NULL, 10);
|
|
|
|
}
|
2011-02-16 08:52:38 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "localport", p)) {
|
2002-07-24 17:45:41 +00:00
|
|
|
s->local_port = strtol(buf, NULL, 10);
|
|
|
|
}
|
2011-02-16 08:52:38 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "pkt_size", p)) {
|
2003-02-09 18:06:23 +00:00
|
|
|
h->max_packet_size = strtol(buf, NULL, 10);
|
|
|
|
}
|
2011-02-16 08:52:38 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "buffer_size", p)) {
|
2008-11-12 21:40:53 +00:00
|
|
|
s->buffer_size = strtol(buf, NULL, 10);
|
|
|
|
}
|
2011-02-16 08:52:38 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "connect", p)) {
|
2010-10-08 08:42:30 +00:00
|
|
|
s->is_connected = strtol(buf, NULL, 10);
|
|
|
|
}
|
2011-11-09 09:45:01 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "localaddr", p)) {
|
|
|
|
av_strlcpy(localaddr, buf, sizeof(localaddr));
|
|
|
|
}
|
2012-06-21 11:19:56 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "sources", p))
|
|
|
|
include = 1;
|
|
|
|
if (include || av_find_info_tag(buf, sizeof(buf), "block", p)) {
|
|
|
|
char *source_start;
|
|
|
|
|
|
|
|
source_start = buf;
|
|
|
|
while (1) {
|
|
|
|
char *next = strchr(source_start, ',');
|
|
|
|
if (next)
|
|
|
|
*next = '\0';
|
|
|
|
sources[num_sources] = av_strdup(source_start);
|
|
|
|
if (!sources[num_sources])
|
|
|
|
goto fail;
|
|
|
|
source_start = next + 1;
|
|
|
|
num_sources++;
|
|
|
|
if (num_sources >= FF_ARRAY_ELEMS(sources) || !next)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
2002-07-24 17:45:41 +00:00
|
|
|
|
|
|
|
/* fill the dest addr */
|
2010-06-27 14:16:46 +00:00
|
|
|
av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2010-06-27 14:16:46 +00:00
|
|
|
/* XXX: fix av_url_split */
|
2002-07-24 17:45:41 +00:00
|
|
|
if (hostname[0] == '\0' || hostname[0] == '?') {
|
|
|
|
/* only accepts null hostname if input */
|
2011-05-09 13:56:56 +00:00
|
|
|
if (!(flags & AVIO_FLAG_READ))
|
2002-07-24 17:45:41 +00:00
|
|
|
goto fail;
|
|
|
|
} else {
|
2011-03-08 09:35:52 +00:00
|
|
|
if (ff_udp_set_remote_url(h, uri) < 0)
|
2010-07-28 16:27:16 +00:00
|
|
|
goto fail;
|
2002-07-24 17:45:41 +00:00
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2011-06-17 05:58:01 +00:00
|
|
|
if ((s->is_multicast || !s->local_port) && (h->flags & AVIO_FLAG_READ))
|
2007-11-15 13:34:56 +00:00
|
|
|
s->local_port = port;
|
2011-11-09 09:45:01 +00:00
|
|
|
udp_fd = udp_socket_create(s, &my_addr, &len, localaddr);
|
2002-07-24 17:45:41 +00:00
|
|
|
if (udp_fd < 0)
|
|
|
|
goto fail;
|
|
|
|
|
2011-02-07 21:14:43 +00:00
|
|
|
/* Follow the requested reuse option, unless it's multicast in which
|
2011-10-05 12:12:42 +00:00
|
|
|
* case enable reuse unless explicitly disabled.
|
2011-02-07 21:14:43 +00:00
|
|
|
*/
|
|
|
|
if (s->reuse_socket || (s->is_multicast && !reuse_specified)) {
|
|
|
|
s->reuse_socket = 1;
|
2006-10-28 17:16:18 +00:00
|
|
|
if (setsockopt (udp_fd, SOL_SOCKET, SO_REUSEADDR, &(s->reuse_socket), sizeof(s->reuse_socket)) != 0)
|
|
|
|
goto fail;
|
2011-02-07 21:14:43 +00:00
|
|
|
}
|
2006-10-28 17:16:18 +00:00
|
|
|
|
2012-03-08 13:15:11 +00:00
|
|
|
/* If multicast, try binding the multicast address first, to avoid
|
|
|
|
* receiving UDP packets from other sources aimed at the same UDP
|
2012-03-08 13:17:15 +00:00
|
|
|
* port. This fails on windows. This makes sending to the same address
|
|
|
|
* using sendto() fail, so only do it if we're opened in read-only mode. */
|
|
|
|
if (s->is_multicast && !(h->flags & AVIO_FLAG_WRITE)) {
|
2008-12-07 17:29:09 +00:00
|
|
|
bind_ret = bind(udp_fd,(struct sockaddr *)&s->dest_addr, len);
|
|
|
|
}
|
|
|
|
/* bind to the local address if not multicast or if the multicast
|
|
|
|
* bind failed */
|
2012-03-07 22:38:02 +00:00
|
|
|
/* the bind is needed to give a port to the socket now */
|
2012-03-07 19:40:29 +00:00
|
|
|
if (bind_ret < 0 && bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0) {
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(h, AV_LOG_ERROR, "bind failed");
|
2001-07-22 14:18:56 +00:00
|
|
|
goto fail;
|
2012-03-07 19:40:29 +00:00
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2007-11-15 13:41:51 +00:00
|
|
|
len = sizeof(my_addr);
|
|
|
|
getsockname(udp_fd, (struct sockaddr *)&my_addr, &len);
|
2007-11-15 14:26:52 +00:00
|
|
|
s->local_port = udp_port(&my_addr, len);
|
|
|
|
|
2004-11-09 00:27:16 +00:00
|
|
|
if (s->is_multicast) {
|
2012-03-08 13:31:45 +00:00
|
|
|
if (h->flags & AVIO_FLAG_WRITE) {
|
2007-11-14 07:42:46 +00:00
|
|
|
/* output */
|
2007-11-14 07:43:51 +00:00
|
|
|
if (udp_set_multicast_ttl(udp_fd, s->ttl, (struct sockaddr *)&s->dest_addr) < 0)
|
2004-11-09 00:27:16 +00:00
|
|
|
goto fail;
|
2012-03-08 13:31:45 +00:00
|
|
|
}
|
|
|
|
if (h->flags & AVIO_FLAG_READ) {
|
2007-11-14 07:42:46 +00:00
|
|
|
/* input */
|
2012-06-21 11:19:56 +00:00
|
|
|
if (num_sources == 0 || !include) {
|
|
|
|
if (udp_join_multicast_group(udp_fd, (struct sockaddr *)&s->dest_addr) < 0)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
if (num_sources) {
|
|
|
|
if (udp_set_multicast_sources(udp_fd, (struct sockaddr *)&s->dest_addr, s->dest_addr_len, sources, num_sources, 0) < 0)
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
} else if (include && num_sources) {
|
|
|
|
if (udp_set_multicast_sources(udp_fd, (struct sockaddr *)&s->dest_addr, s->dest_addr_len, sources, num_sources, 1) < 0)
|
|
|
|
goto fail;
|
|
|
|
} else {
|
|
|
|
av_log(NULL, AV_LOG_ERROR, "invalid udp settings: inclusive multicast but no sources given\n");
|
2004-11-09 00:27:16 +00:00
|
|
|
goto fail;
|
2012-06-21 11:19:56 +00:00
|
|
|
}
|
2004-11-09 00:27:16 +00:00
|
|
|
}
|
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2002-07-24 17:45:41 +00:00
|
|
|
if (is_output) {
|
|
|
|
/* limit the tx buf size to limit latency */
|
2008-11-12 21:40:53 +00:00
|
|
|
tmp = s->buffer_size;
|
2002-07-24 17:45:41 +00:00
|
|
|
if (setsockopt(udp_fd, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp)) < 0) {
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(h, AV_LOG_ERROR, "setsockopt(SO_SNDBUF)");
|
2002-07-24 17:45:41 +00:00
|
|
|
goto fail;
|
|
|
|
}
|
2007-08-16 22:12:03 +00:00
|
|
|
} else {
|
|
|
|
/* set udp recv buffer size to the largest possible udp packet size to
|
|
|
|
* avoid losing data on OSes that set this too low by default. */
|
2008-11-12 21:40:53 +00:00
|
|
|
tmp = s->buffer_size;
|
|
|
|
if (setsockopt(udp_fd, SOL_SOCKET, SO_RCVBUF, &tmp, sizeof(tmp)) < 0) {
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(h, AV_LOG_WARNING, "setsockopt(SO_RECVBUF)");
|
2008-11-12 21:40:53 +00:00
|
|
|
}
|
2008-11-17 07:50:25 +00:00
|
|
|
/* make the socket non-blocking */
|
|
|
|
ff_socket_nonblock(udp_fd, 1);
|
2002-07-24 17:45:41 +00:00
|
|
|
}
|
2010-10-08 08:42:30 +00:00
|
|
|
if (s->is_connected) {
|
|
|
|
if (connect(udp_fd, (struct sockaddr *) &s->dest_addr, s->dest_addr_len)) {
|
2012-06-19 12:37:06 +00:00
|
|
|
log_net_error(h, AV_LOG_ERROR, "connect");
|
2010-10-08 08:42:30 +00:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
}
|
2002-07-24 17:45:41 +00:00
|
|
|
|
2012-06-21 11:19:56 +00:00
|
|
|
for (i = 0; i < num_sources; i++)
|
|
|
|
av_free(sources[i]);
|
|
|
|
|
2002-07-24 17:45:41 +00:00
|
|
|
s->udp_fd = udp_fd;
|
2001-07-22 14:18:56 +00:00
|
|
|
return 0;
|
|
|
|
fail:
|
2002-07-24 17:45:41 +00:00
|
|
|
if (udp_fd >= 0)
|
2002-11-02 10:35:07 +00:00
|
|
|
closesocket(udp_fd);
|
2012-06-21 11:19:56 +00:00
|
|
|
for (i = 0; i < num_sources; i++)
|
|
|
|
av_free(sources[i]);
|
2007-07-19 15:23:32 +00:00
|
|
|
return AVERROR(EIO);
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2003-02-11 16:35:48 +00:00
|
|
|
static int udp_read(URLContext *h, uint8_t *buf, int size)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
UDPContext *s = h->priv_data;
|
2008-11-14 19:33:22 +00:00
|
|
|
int ret;
|
2002-07-24 17:45:41 +00:00
|
|
|
|
2011-04-04 18:11:19 +00:00
|
|
|
if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
|
2011-04-04 16:17:12 +00:00
|
|
|
ret = ff_network_wait_fd(s->udp_fd, 0);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
2002-07-24 17:45:41 +00:00
|
|
|
}
|
2011-04-04 16:17:12 +00:00
|
|
|
ret = recv(s->udp_fd, buf, size, 0);
|
|
|
|
return ret < 0 ? ff_neterrno() : ret;
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2010-06-01 07:46:23 +00:00
|
|
|
static int udp_write(URLContext *h, const uint8_t *buf, int size)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
UDPContext *s = h->priv_data;
|
2002-07-24 17:45:41 +00:00
|
|
|
int ret;
|
|
|
|
|
2011-04-04 18:11:19 +00:00
|
|
|
if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
|
2011-04-04 16:17:12 +00:00
|
|
|
ret = ff_network_wait_fd(s->udp_fd, 1);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
2011-04-04 16:17:12 +00:00
|
|
|
|
|
|
|
if (!s->is_connected) {
|
|
|
|
ret = sendto (s->udp_fd, buf, size, 0,
|
|
|
|
(struct sockaddr *) &s->dest_addr,
|
|
|
|
s->dest_addr_len);
|
|
|
|
} else
|
|
|
|
ret = send(s->udp_fd, buf, size, 0);
|
|
|
|
|
|
|
|
return ret < 0 ? ff_neterrno() : ret;
|
2002-07-24 17:45:41 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int udp_close(URLContext *h)
|
|
|
|
{
|
|
|
|
UDPContext *s = h->priv_data;
|
|
|
|
|
2011-05-09 13:56:56 +00:00
|
|
|
if (s->is_multicast && (h->flags & AVIO_FLAG_READ))
|
2007-11-14 07:43:51 +00:00
|
|
|
udp_leave_multicast_group(s->udp_fd, (struct sockaddr *)&s->dest_addr);
|
2002-11-02 10:35:07 +00:00
|
|
|
closesocket(s->udp_fd);
|
2002-07-24 17:45:41 +00:00
|
|
|
return 0;
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
URLProtocol ff_udp_protocol = {
|
2011-04-08 05:41:47 +00:00
|
|
|
.name = "udp",
|
|
|
|
.url_open = udp_open,
|
|
|
|
.url_read = udp_read,
|
|
|
|
.url_write = udp_write,
|
|
|
|
.url_close = udp_close,
|
2009-03-03 17:04:51 +00:00
|
|
|
.url_get_file_handle = udp_get_file_handle,
|
2011-12-01 09:44:21 +00:00
|
|
|
.priv_data_size = sizeof(UDPContext),
|
2011-12-30 09:38:05 +00:00
|
|
|
.flags = URL_PROTOCOL_FLAG_NETWORK,
|
2001-07-22 14:18:56 +00:00
|
|
|
};
|