/*
* UDP prototype streaming system
- * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file udp.c
+ * @file
* UDP protocol
*/
#define _BSD_SOURCE /* Needed for using struct ip_mreq with recent glibc */
+
#include "avformat.h"
-#include <unistd.h>
+#include "avio_internal.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/avstring.h"
+#include "internal.h"
#include "network.h"
#include "os_support.h"
-#ifdef HAVE_SYS_SELECT_H
-#include <sys/select.h>
-#endif
+#include "url.h"
#ifndef IPV6_ADD_MEMBERSHIP
#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
#endif
-#ifndef IN_MULTICAST
-#define IN_MULTICAST(a) ((((uint32_t)(a)) & 0xf0000000) == 0xe0000000)
-#endif
-#ifndef IN6_IS_ADDR_MULTICAST
-#define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
-#endif
typedef struct {
int udp_fd;
int is_multicast;
int local_port;
int reuse_socket;
-#ifndef CONFIG_IPV6
- struct sockaddr_in dest_addr;
-#else
struct sockaddr_storage dest_addr;
-#endif
int dest_addr_len;
+ int is_connected;
} UDPContext;
#define UDP_TX_BUF_SIZE 32768
#define UDP_MAX_PKT_SIZE 65536
-static int udp_set_multicast_ttl(int sockfd, int mcastTTL, struct sockaddr *addr) {
+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);
+}
+
+static int udp_set_multicast_ttl(int sockfd, int mcastTTL,
+ struct sockaddr *addr)
+{
#ifdef IP_MULTICAST_TTL
if (addr->sa_family == AF_INET) {
if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL, sizeof(mcastTTL)) < 0) {
- av_log(NULL, AV_LOG_ERROR, "setsockopt(IP_MULTICAST_TTL): %s\n", strerror(errno));
+ log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_MULTICAST_TTL)");
return -1;
}
}
#endif
-#ifdef CONFIG_IPV6
+#if defined(IPPROTO_IPV6) && defined(IPV6_MULTICAST_HOPS)
if (addr->sa_family == AF_INET6) {
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &mcastTTL, sizeof(mcastTTL)) < 0) {
- av_log(NULL, AV_LOG_ERROR, "setsockopt(IPV6_MULTICAST_HOPS): %s\n", strerror(errno));
+ log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_MULTICAST_HOPS)");
return -1;
}
}
return 0;
}
-static int udp_join_multicast_group(int sockfd, struct sockaddr *addr) {
+static int udp_join_multicast_group(int sockfd, struct sockaddr *addr)
+{
#ifdef IP_ADD_MEMBERSHIP
if (addr->sa_family == AF_INET) {
struct ip_mreq mreq;
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) {
- av_log(NULL, AV_LOG_ERROR, "setsockopt(IP_ADD_MEMBERSHIP): %s\n", strerror(errno));
+ log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_ADD_MEMBERSHIP)");
return -1;
}
}
#endif
-#ifdef CONFIG_IPV6
+#if HAVE_STRUCT_IPV6_MREQ && defined(IPPROTO_IPV6)
if (addr->sa_family == AF_INET6) {
struct ipv6_mreq mreq6;
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) {
- av_log(NULL, AV_LOG_ERROR, "setsockopt(IPV6_ADD_MEMBERSHIP): %s\n", strerror(errno));
+ log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_ADD_MEMBERSHIP)");
return -1;
}
}
return 0;
}
-static int udp_leave_multicast_group(int sockfd, struct sockaddr *addr) {
+static int udp_leave_multicast_group(int sockfd, struct sockaddr *addr)
+{
#ifdef IP_DROP_MEMBERSHIP
if (addr->sa_family == AF_INET) {
struct ip_mreq mreq;
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) {
- av_log(NULL, AV_LOG_ERROR, "setsockopt(IP_DROP_MEMBERSHIP): %s\n", strerror(errno));
+ log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_DROP_MEMBERSHIP)");
return -1;
}
}
#endif
-#ifdef CONFIG_IPV6
+#if HAVE_STRUCT_IPV6_MREQ && defined(IPPROTO_IPV6)
if (addr->sa_family == AF_INET6) {
struct ipv6_mreq mreq6;
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) {
- av_log(NULL, AV_LOG_ERROR, "setsockopt(IPV6_DROP_MEMBERSHIP): %s\n", strerror(errno));
+ log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_DROP_MEMBERSHIP)");
return -1;
}
}
return 0;
}
-#ifdef CONFIG_IPV6
-static struct addrinfo* udp_ipv6_resolve_host(const char *hostname, int port, int type, int family, int flags) {
- struct addrinfo hints, *res = 0;
+static struct addrinfo* udp_resolve_host(const char *hostname, int port,
+ int type, int family, int flags)
+{
+ struct addrinfo hints = { 0 }, *res = 0;
int error;
char sport[16];
const char *node = 0, *service = "0";
if ((hostname) && (hostname[0] != '\0') && (hostname[0] != '?')) {
node = hostname;
}
- memset(&hints, 0, sizeof(hints));
hints.ai_socktype = type;
hints.ai_family = family;
hints.ai_flags = flags;
if ((error = getaddrinfo(node, service, &hints, &res))) {
- av_log(NULL, AV_LOG_ERROR, "udp_ipv6_resolve_host: %s\n", gai_strerror(error));
+ res = NULL;
+ av_log(NULL, AV_LOG_ERROR, "udp_resolve_host: %s\n", gai_strerror(error));
}
return res;
}
-static int udp_set_url(struct sockaddr_storage *addr, const char *hostname, int port) {
+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,
+ AI_NUMERICHOST);
+ 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,
+ AI_NUMERICHOST);
+ 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;
+}
+static int udp_set_url(struct sockaddr_storage *addr,
+ const char *hostname, int port)
+{
struct addrinfo *res0;
int addr_len;
- res0 = udp_ipv6_resolve_host(hostname, port, SOCK_DGRAM, AF_UNSPEC, 0);
+ res0 = udp_resolve_host(hostname, port, SOCK_DGRAM, AF_UNSPEC, 0);
if (res0 == 0) return AVERROR(EIO);
memcpy(addr, res0->ai_addr, res0->ai_addrlen);
addr_len = res0->ai_addrlen;
return addr_len;
}
-static int is_multicast_address(struct sockaddr_storage *addr)
-{
- if (addr->ss_family == AF_INET) {
- return IN_MULTICAST(ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr));
- }
- if (addr->ss_family == AF_INET6) {
- return IN6_IS_ADDR_MULTICAST(&((struct sockaddr_in6 *)addr)->sin6_addr);
- }
-
- return 0;
-}
-
-static int udp_socket_create(UDPContext *s, struct sockaddr_storage *addr, int *addr_len)
+static int udp_socket_create(UDPContext *s, struct sockaddr_storage *addr,
+ socklen_t *addr_len, const char *localaddr)
{
int udp_fd = -1;
struct addrinfo *res0 = NULL, *res = NULL;
if (((struct sockaddr *) &s->dest_addr)->sa_family)
family = ((struct sockaddr *) &s->dest_addr)->sa_family;
- res0 = udp_ipv6_resolve_host(0, s->local_port, SOCK_DGRAM, family, AI_PASSIVE);
+ res0 = udp_resolve_host(localaddr[0] ? localaddr : NULL, s->local_port,
+ SOCK_DGRAM, family, AI_PASSIVE);
if (res0 == 0)
goto fail;
for (res = res0; res; res=res->ai_next) {
udp_fd = socket(res->ai_family, SOCK_DGRAM, 0);
- if (udp_fd > 0) break;
- av_log(NULL, AV_LOG_ERROR, "socket: %s\n", strerror(errno));
+ if (udp_fd != -1) break;
+ log_net_error(NULL, AV_LOG_ERROR, "socket");
}
if (udp_fd < 0)
static int udp_port(struct sockaddr_storage *addr, int addr_len)
{
char sbuf[sizeof(int)*3+1];
+ int error;
- if (getnameinfo((struct sockaddr *)addr, addr_len, NULL, 0, sbuf, sizeof(sbuf), NI_NUMERICSERV) != 0) {
- av_log(NULL, AV_LOG_ERROR, "getnameinfo: %s\n", strerror(errno));
+ 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));
return -1;
}
return strtol(sbuf, NULL, 10);
}
-#else
-
-static int udp_set_url(struct sockaddr_in *addr, const char *hostname, int port)
-{
- /* set the destination address */
- if (resolve_host(&addr->sin_addr, hostname) < 0)
- return AVERROR(EIO);
- addr->sin_family = AF_INET;
- addr->sin_port = htons(port);
-
- return sizeof(struct sockaddr_in);
-}
-
-static int is_multicast_address(struct sockaddr_in *addr)
-{
- return IN_MULTICAST(ntohl(addr->sin_addr.s_addr));
-}
-
-static int udp_socket_create(UDPContext *s, struct sockaddr_in *addr, int *addr_len)
-{
- int fd;
-
- fd = socket(AF_INET, SOCK_DGRAM, 0);
- if (fd < 0)
- return -1;
-
- addr->sin_family = AF_INET;
- addr->sin_addr.s_addr = htonl (INADDR_ANY);
- addr->sin_port = htons(s->local_port);
- *addr_len = sizeof(struct sockaddr_in);
-
- return fd;
-}
-
-static int udp_port(struct sockaddr_in *addr, int len)
-{
- return ntohs(addr->sin_port);
-}
-#endif /* CONFIG_IPV6 */
-
/**
* If no filename is given to av_open_input_file because you want to
* 'pkt_size=n' : set max packet size
* 'reuse=1' : enable reusing the socket
*
- * @param s1 media file context
+ * @param h media file context
* @param uri of the remote server
* @return zero if no error.
*/
-int udp_set_remote_url(URLContext *h, const char *uri)
+int ff_udp_set_remote_url(URLContext *h, const char *uri)
{
UDPContext *s = h->priv_data;
- char hostname[256];
+ char hostname[256], buf[10];
int port;
+ const char *p;
- url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
+ av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
/* set the destination address */
s->dest_addr_len = udp_set_url(&s->dest_addr, hostname, port);
if (s->dest_addr_len < 0) {
return AVERROR(EIO);
}
- s->is_multicast = is_multicast_address(&s->dest_addr);
+ s->is_multicast = ff_is_multicast_address((struct sockaddr*) &s->dest_addr);
+ p = strchr(uri, '?');
+ if (p) {
+ if (av_find_info_tag(buf, sizeof(buf), "connect", p)) {
+ 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;
+ log_net_error(h, AV_LOG_ERROR, "connect");
+ return AVERROR(EIO);
+ }
+ }
+ }
+ }
return 0;
}
/**
- * Return the local port used by the UDP connexion
- * @param s1 media file context
+ * Return the local port used by the UDP connection
+ * @param h media file context
* @return the local port number
*/
-int udp_get_local_port(URLContext *h)
+int ff_udp_get_local_port(URLContext *h)
{
UDPContext *s = h->priv_data;
return s->local_port;
* streams at the same time.
* @param h media file context
*/
-int udp_get_file_handle(URLContext *h)
+static int udp_get_file_handle(URLContext *h)
{
UDPContext *s = h->priv_data;
return s->udp_fd;
/* return non zero if error */
static int udp_open(URLContext *h, const char *uri, int flags)
{
- char hostname[1024];
- int port, udp_fd = -1, tmp;
- UDPContext *s = NULL;
+ char hostname[1024], localaddr[1024] = "";
+ int port, udp_fd = -1, tmp, bind_ret = -1;
+ UDPContext *s = h->priv_data;
int is_output;
const char *p;
char buf[256];
-#ifndef CONFIG_IPV6
- struct sockaddr_in my_addr;
-#else
struct sockaddr_storage my_addr;
-#endif
- int len;
+ socklen_t len;
+ int reuse_specified = 0;
+ int i, include = 0, num_sources = 0;
+ char *sources[32];
h->is_streamed = 1;
h->max_packet_size = 1472;
- is_output = (flags & URL_WRONLY);
-
- if(!ff_network_init())
- return AVERROR(EIO);
-
- s = av_mallocz(sizeof(UDPContext));
- if (!s)
- return AVERROR(ENOMEM);
+ is_output = !(flags & AVIO_FLAG_READ);
- h->priv_data = s;
s->ttl = 16;
s->buffer_size = is_output ? UDP_TX_BUF_SIZE : UDP_MAX_PKT_SIZE;
p = strchr(uri, '?');
if (p) {
- s->reuse_socket = find_info_tag(buf, sizeof(buf), "reuse", p);
- if (find_info_tag(buf, sizeof(buf), "ttl", p)) {
+ if (av_find_info_tag(buf, sizeof(buf), "reuse", p)) {
+ char *endptr = NULL;
+ 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;
+ }
+ if (av_find_info_tag(buf, sizeof(buf), "ttl", p)) {
s->ttl = strtol(buf, NULL, 10);
}
- if (find_info_tag(buf, sizeof(buf), "localport", p)) {
+ if (av_find_info_tag(buf, sizeof(buf), "localport", p)) {
s->local_port = strtol(buf, NULL, 10);
}
- if (find_info_tag(buf, sizeof(buf), "pkt_size", p)) {
+ if (av_find_info_tag(buf, sizeof(buf), "pkt_size", p)) {
h->max_packet_size = strtol(buf, NULL, 10);
}
- if (find_info_tag(buf, sizeof(buf), "buffer_size", p)) {
+ if (av_find_info_tag(buf, sizeof(buf), "buffer_size", p)) {
s->buffer_size = strtol(buf, NULL, 10);
}
+ if (av_find_info_tag(buf, sizeof(buf), "connect", p)) {
+ s->is_connected = strtol(buf, NULL, 10);
+ }
+ if (av_find_info_tag(buf, sizeof(buf), "localaddr", p)) {
+ av_strlcpy(localaddr, buf, sizeof(localaddr));
+ }
+ 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;
+ }
+ }
}
/* fill the dest addr */
- url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
+ av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
- /* XXX: fix url_split */
+ /* XXX: fix av_url_split */
if (hostname[0] == '\0' || hostname[0] == '?') {
/* only accepts null hostname if input */
- if (flags & URL_WRONLY)
+ if (!(flags & AVIO_FLAG_READ))
goto fail;
} else {
- udp_set_remote_url(h, uri);
+ if (ff_udp_set_remote_url(h, uri) < 0)
+ goto fail;
}
- if (s->is_multicast && !(h->flags & URL_WRONLY))
+ if ((s->is_multicast || !s->local_port) && (h->flags & AVIO_FLAG_READ))
s->local_port = port;
- udp_fd = udp_socket_create(s, &my_addr, &len);
+ udp_fd = udp_socket_create(s, &my_addr, &len, localaddr);
if (udp_fd < 0)
goto fail;
- if (s->reuse_socket)
+ /* Follow the requested reuse option, unless it's multicast in which
+ * case enable reuse unless explicitly disabled.
+ */
+ if (s->reuse_socket || (s->is_multicast && !reuse_specified)) {
+ s->reuse_socket = 1;
if (setsockopt (udp_fd, SOL_SOCKET, SO_REUSEADDR, &(s->reuse_socket), sizeof(s->reuse_socket)) != 0)
goto fail;
+ }
+ /* If multicast, try binding the multicast address first, to avoid
+ * receiving UDP packets from other sources aimed at the same UDP
+ * 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)) {
+ 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 */
/* the bind is needed to give a port to the socket now */
- if (bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0)
+ if (bind_ret < 0 && bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0) {
+ log_net_error(h, AV_LOG_ERROR, "bind failed");
goto fail;
+ }
len = sizeof(my_addr);
getsockname(udp_fd, (struct sockaddr *)&my_addr, &len);
s->local_port = udp_port(&my_addr, len);
if (s->is_multicast) {
- if (h->flags & URL_WRONLY) {
+ if (h->flags & AVIO_FLAG_WRITE) {
/* output */
if (udp_set_multicast_ttl(udp_fd, s->ttl, (struct sockaddr *)&s->dest_addr) < 0)
goto fail;
- } else {
+ }
+ if (h->flags & AVIO_FLAG_READ) {
/* input */
- if (udp_join_multicast_group(udp_fd, (struct sockaddr *)&s->dest_addr) < 0)
+ 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");
goto fail;
+ }
}
}
/* limit the tx buf size to limit latency */
tmp = s->buffer_size;
if (setsockopt(udp_fd, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp)) < 0) {
- av_log(NULL, AV_LOG_ERROR, "setsockopt(SO_SNDBUF): %s\n", strerror(errno));
+ log_net_error(h, AV_LOG_ERROR, "setsockopt(SO_SNDBUF)");
goto fail;
}
} else {
* avoid losing data on OSes that set this too low by default. */
tmp = s->buffer_size;
if (setsockopt(udp_fd, SOL_SOCKET, SO_RCVBUF, &tmp, sizeof(tmp)) < 0) {
- av_log(NULL, AV_LOG_WARNING, "setsockopt(SO_RECVBUF): %s\n", strerror(errno));
+ log_net_error(h, AV_LOG_WARNING, "setsockopt(SO_RECVBUF)");
}
/* make the socket non-blocking */
ff_socket_nonblock(udp_fd, 1);
}
+ if (s->is_connected) {
+ if (connect(udp_fd, (struct sockaddr *) &s->dest_addr, s->dest_addr_len)) {
+ log_net_error(h, AV_LOG_ERROR, "connect");
+ goto fail;
+ }
+ }
+
+ for (i = 0; i < num_sources; i++)
+ av_free(sources[i]);
s->udp_fd = udp_fd;
return 0;
fail:
if (udp_fd >= 0)
closesocket(udp_fd);
- av_free(s);
+ for (i = 0; i < num_sources; i++)
+ av_free(sources[i]);
return AVERROR(EIO);
}
static int udp_read(URLContext *h, uint8_t *buf, int size)
{
UDPContext *s = h->priv_data;
- int len;
- fd_set rfds;
int ret;
- struct timeval tv;
-
- for(;;) {
- if (url_interrupt_cb())
- return AVERROR(EINTR);
- FD_ZERO(&rfds);
- FD_SET(s->udp_fd, &rfds);
- tv.tv_sec = 0;
- tv.tv_usec = 100 * 1000;
- ret = select(s->udp_fd + 1, &rfds, NULL, NULL, &tv);
+
+ if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
+ ret = ff_network_wait_fd(s->udp_fd, 0);
if (ret < 0)
- return AVERROR(EIO);
- if (!(ret > 0 && FD_ISSET(s->udp_fd, &rfds)))
- continue;
- len = recv(s->udp_fd, buf, size, 0);
- if (len < 0) {
- if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
- ff_neterrno() != FF_NETERROR(EINTR))
- return AVERROR(EIO);
- } else {
- break;
- }
+ return ret;
}
- return len;
+ ret = recv(s->udp_fd, buf, size, 0);
+ return ret < 0 ? ff_neterrno() : ret;
}
-static int udp_write(URLContext *h, uint8_t *buf, int size)
+static int udp_write(URLContext *h, const uint8_t *buf, int size)
{
UDPContext *s = h->priv_data;
int ret;
- for(;;) {
+ if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
+ ret = ff_network_wait_fd(s->udp_fd, 1);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (!s->is_connected) {
ret = sendto (s->udp_fd, buf, size, 0,
(struct sockaddr *) &s->dest_addr,
s->dest_addr_len);
- if (ret < 0) {
- if (ff_neterrno() != FF_NETERROR(EINTR) &&
- ff_neterrno() != FF_NETERROR(EAGAIN))
- return AVERROR(EIO);
- } else {
- break;
- }
- }
- return size;
+ } else
+ ret = send(s->udp_fd, buf, size, 0);
+
+ return ret < 0 ? ff_neterrno() : ret;
}
static int udp_close(URLContext *h)
{
UDPContext *s = h->priv_data;
- if (s->is_multicast && !(h->flags & URL_WRONLY))
+ if (s->is_multicast && (h->flags & AVIO_FLAG_READ))
udp_leave_multicast_group(s->udp_fd, (struct sockaddr *)&s->dest_addr);
closesocket(s->udp_fd);
- ff_network_close();
- av_free(s);
return 0;
}
-URLProtocol udp_protocol = {
- "udp",
- udp_open,
- udp_read,
- udp_write,
- NULL, /* seek */
- udp_close,
+URLProtocol ff_udp_protocol = {
+ .name = "udp",
+ .url_open = udp_open,
+ .url_read = udp_read,
+ .url_write = udp_write,
+ .url_close = udp_close,
+ .url_get_file_handle = udp_get_file_handle,
+ .priv_data_size = sizeof(UDPContext),
+ .flags = URL_PROTOCOL_FLAG_NETWORK,
};
projects / ffmpeg / blobdiff