/*
* UDP prototype streaming system
- * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * UDP protocol
*/
+
+#define _BSD_SOURCE /* Needed for using struct ip_mreq with recent glibc */
+#define _DARWIN_C_SOURCE /* Needed for using IP_MULTICAST_TTL on OS X */
#include "avformat.h"
+#include "libavutil/parseutils.h"
#include <unistd.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#ifndef __BEOS__
-# include <arpa/inet.h>
-#else
-# include "barpainet.h"
+#include "internal.h"
+#include "network.h"
+#include "os_support.h"
+#if HAVE_POLL_H
+#include <poll.h>
+#endif
+#include <sys/time.h>
+
+#ifndef IPV6_ADD_MEMBERSHIP
+#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
+#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
#endif
-#include <netdb.h>
typedef struct {
int udp_fd;
int ttl;
+ int buffer_size;
int is_multicast;
int local_port;
- struct ip_mreq mreq;
- struct sockaddr_in dest_addr;
+ int reuse_socket;
+ struct sockaddr_storage dest_addr;
+ 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)
+{
+#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));
+ return -1;
+ }
+ }
+#endif
+#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));
+ return -1;
+ }
+ }
+#endif
+ return 0;
+}
+
+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));
+ return -1;
+ }
+ }
+#endif
+#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));
+ return -1;
+ }
+ }
+#endif
+ return 0;
+}
+
+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));
+ return -1;
+ }
+ }
+#endif
+#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));
+ return -1;
+ }
+ }
+#endif
+ return 0;
+}
+
+static struct addrinfo* udp_resolve_host(const char *hostname, int port,
+ int type, int family, int flags)
+{
+ struct addrinfo hints, *res = 0;
+ int error;
+ char sport[16];
+ const char *node = 0, *service = "0";
+
+ if (port > 0) {
+ snprintf(sport, sizeof(sport), "%d", port);
+ service = sport;
+ }
+ 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))) {
+ 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)
+{
+ struct addrinfo *res0;
+ int addr_len;
+
+ 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;
+ freeaddrinfo(res0);
+
+ return addr_len;
+}
+
+static int udp_socket_create(UDPContext *s,
+ struct sockaddr_storage *addr, int *addr_len)
+{
+ int udp_fd = -1;
+ struct addrinfo *res0 = NULL, *res = NULL;
+ int family = AF_UNSPEC;
+
+ if (((struct sockaddr *) &s->dest_addr)->sa_family)
+ family = ((struct sockaddr *) &s->dest_addr)->sa_family;
+ res0 = udp_resolve_host(0, 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 < 0)
+ goto fail;
+
+ memcpy(addr, res->ai_addr, res->ai_addrlen);
+ *addr_len = res->ai_addrlen;
+
+ freeaddrinfo(res0);
+
+ return udp_fd;
+
+ fail:
+ if (udp_fd >= 0)
+ closesocket(udp_fd);
+ if(res0)
+ freeaddrinfo(res0);
+ return -1;
+}
+
+static int udp_port(struct sockaddr_storage *addr, int addr_len)
+{
+ char sbuf[sizeof(int)*3+1];
+
+ 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));
+ return -1;
+ }
+
+ return strtol(sbuf, NULL, 10);
+}
+
/**
* If no filename is given to av_open_input_file because you want to
* the remote server address.
*
* url syntax: udp://host:port[?option=val...]
- * option: 'multicast=1' : enable multicast
- * 'ttl=n' : set the ttl value (for multicast only)
+ * option: 'ttl=n' : set the ttl value (for multicast only)
* 'localport=n' : set the local port
* '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)
{
UDPContext *s = h->priv_data;
- char hostname[256];
+ char hostname[256], buf[10];
int port;
-
- url_split(NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
+ const char *p;
+
+ av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
/* set the destination address */
- if (resolve_host(&s->dest_addr.sin_addr, hostname) < 0)
- return -EIO;
- s->dest_addr.sin_family = AF_INET;
- s->dest_addr.sin_port = htons(port);
+ s->dest_addr_len = udp_set_url(&s->dest_addr, hostname, port);
+ if (s->dest_addr_len < 0) {
+ return AVERROR(EIO);
+ }
+ 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;
+ av_log(NULL, AV_LOG_ERROR, "connect: %s\n", strerror(errno));
+ 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)
* streams at the same time.
* @param h media file context
*/
+#if !FF_API_UDP_GET_FILE
+static
+#endif
int udp_get_file_handle(URLContext *h)
{
UDPContext *s = h->priv_data;
/* return non zero if error */
static int udp_open(URLContext *h, const char *uri, int flags)
{
- struct sockaddr_in my_addr, my_addr1;
char hostname[1024];
- int port, udp_fd = -1, tmp;
+ int port, udp_fd = -1, tmp, bind_ret = -1;
UDPContext *s = NULL;
- int is_output, len;
+ int is_output;
const char *p;
char buf[256];
+ struct sockaddr_storage my_addr;
+ int len;
+ int reuse_specified = 0;
h->is_streamed = 1;
h->max_packet_size = 1472;
is_output = (flags & URL_WRONLY);
-
- s = av_malloc(sizeof(UDPContext));
+
+ s = av_mallocz(sizeof(UDPContext));
if (!s)
- return -ENOMEM;
+ return AVERROR(ENOMEM);
h->priv_data = s;
s->ttl = 16;
- s->is_multicast = 0;
+ s->buffer_size = is_output ? UDP_TX_BUF_SIZE : UDP_MAX_PKT_SIZE;
+
p = strchr(uri, '?');
if (p) {
- s->is_multicast = find_info_tag(buf, sizeof(buf), "multicast", p);
- if (find_info_tag(buf, sizeof(buf), "ttl", p)) {
+ if (av_find_info_tag(buf, sizeof(buf), "reuse", p)) {
+ const 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 (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);
+ }
}
/* fill the dest addr */
- url_split(NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
-
- /* XXX: fix url_split */
+ av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
+
+ /* XXX: fix av_url_split */
if (hostname[0] == '\0' || hostname[0] == '?') {
/* only accepts null hostname if input */
- if (s->is_multicast || (flags & URL_WRONLY))
+ if (flags & URL_WRONLY)
goto fail;
} else {
- udp_set_remote_url(h, uri);
+ if (udp_set_remote_url(h, uri) < 0)
+ goto fail;
}
- udp_fd = socket(PF_INET, SOCK_DGRAM, 0);
+ if (s->is_multicast && !(h->flags & URL_WRONLY))
+ s->local_port = port;
+ udp_fd = udp_socket_create(s, &my_addr, &len);
if (udp_fd < 0)
goto fail;
- my_addr.sin_family = AF_INET;
- my_addr.sin_addr.s_addr = htonl (INADDR_ANY);
- if (s->is_multicast && !(h->flags & URL_WRONLY)) {
- /* special case: the bind must be done on the multicast address port */
- my_addr.sin_port = s->dest_addr.sin_port;
- } else {
- my_addr.sin_port = htons(s->local_port);
+ /* Follow the requested reuse option, unless it's multicast in which
+ * case enable reuse unless explicitely 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;
}
/* the bind is needed to give a port to the socket now */
- if (bind(udp_fd,(struct sockaddr *)&my_addr, sizeof(my_addr)) < 0)
+ /* if multicast, try the multicast address bind first */
+ if (s->is_multicast && !(h->flags & URL_WRONLY)) {
+ 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 */
+ if (bind_ret < 0 && bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0)
goto fail;
- len = sizeof(my_addr1);
- getsockname(udp_fd, (struct sockaddr *)&my_addr1, &len);
- s->local_port = ntohs(my_addr1.sin_port);
+ len = sizeof(my_addr);
+ getsockname(udp_fd, (struct sockaddr *)&my_addr, &len);
+ s->local_port = udp_port(&my_addr, len);
-#ifndef CONFIG_BEOS_NETSERVER
if (s->is_multicast) {
if (h->flags & URL_WRONLY) {
/* output */
- if (setsockopt(udp_fd, IPPROTO_IP, IP_MULTICAST_TTL,
- &s->ttl, sizeof(s->ttl)) < 0) {
- perror("IP_MULTICAST_TTL");
+ if (udp_set_multicast_ttl(udp_fd, s->ttl, (struct sockaddr *)&s->dest_addr) < 0)
goto fail;
- }
} else {
/* input */
- memset(&s->mreq, 0, sizeof(s->mreq));
- s->mreq.imr_multiaddr = s->dest_addr.sin_addr;
- s->mreq.imr_interface.s_addr = htonl (INADDR_ANY);
- if (setsockopt(udp_fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
- &s->mreq, sizeof(s->mreq)) < 0) {
- perror("rtp: IP_ADD_MEMBERSHIP");
+ if (udp_join_multicast_group(udp_fd, (struct sockaddr *)&s->dest_addr) < 0)
goto fail;
- }
}
}
-#endif
if (is_output) {
/* limit the tx buf size to limit latency */
- tmp = UDP_TX_BUF_SIZE;
+ tmp = s->buffer_size;
if (setsockopt(udp_fd, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp)) < 0) {
- perror("setsockopt sndbuf");
+ av_log(NULL, AV_LOG_ERROR, "setsockopt(SO_SNDBUF): %s\n", strerror(errno));
+ goto fail;
+ }
+ } 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. */
+ 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));
+ }
+ /* 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)) {
+ av_log(NULL, AV_LOG_ERROR, "connect: %s\n", strerror(errno));
goto fail;
}
}
return 0;
fail:
if (udp_fd >= 0)
-#ifdef CONFIG_BEOS_NETSERVER
closesocket(udp_fd);
-#else
- close(udp_fd);
-#endif
av_free(s);
- return -EIO;
+ return AVERROR(EIO);
}
-static int udp_read(URLContext *h, UINT8 *buf, int size)
+static int udp_read(URLContext *h, uint8_t *buf, int size)
{
UDPContext *s = h->priv_data;
- struct sockaddr_in from;
- int from_len, len;
+ struct pollfd p = {s->udp_fd, POLLIN, 0};
+ int len;
+ int ret;
for(;;) {
- from_len = sizeof(from);
- len = recvfrom (s->udp_fd, buf, size, 0,
- (struct sockaddr *)&from, &from_len);
+ if (url_interrupt_cb())
+ return AVERROR(EINTR);
+ ret = poll(&p, 1, 100);
+ if (ret < 0) {
+ if (ff_neterrno() == AVERROR(EINTR))
+ continue;
+ return AVERROR(EIO);
+ }
+ if (!(ret == 1 && p.revents & POLLIN))
+ continue;
+ len = recv(s->udp_fd, buf, size, 0);
if (len < 0) {
- if (errno != EAGAIN && errno != EINTR)
- return -EIO;
+ if (ff_neterrno() != AVERROR(EAGAIN) &&
+ ff_neterrno() != AVERROR(EINTR))
+ return AVERROR(EIO);
} else {
break;
}
return len;
}
-static int udp_write(URLContext *h, UINT8 *buf, int size)
+static int udp_write(URLContext *h, const uint8_t *buf, int size)
{
UDPContext *s = h->priv_data;
int ret;
for(;;) {
- ret = sendto (s->udp_fd, buf, size, 0,
- (struct sockaddr *) &s->dest_addr,
- sizeof (s->dest_addr));
+ 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);
if (ret < 0) {
- if (errno != EINTR && errno != EAGAIN)
- return -EIO;
+ if (ff_neterrno() != AVERROR(EINTR) &&
+ ff_neterrno() != AVERROR(EAGAIN))
+ return ff_neterrno();
} else {
break;
}
{
UDPContext *s = h->priv_data;
-#ifndef CONFIG_BEOS_NETSERVER
- if (s->is_multicast && !(h->flags & URL_WRONLY)) {
- if (setsockopt(s->udp_fd, IPPROTO_IP, IP_DROP_MEMBERSHIP,
- &s->mreq, sizeof(s->mreq)) < 0) {
- perror("IP_DROP_MEMBERSHIP");
- }
- }
- close(s->udp_fd);
-#else
+ if (s->is_multicast && !(h->flags & URL_WRONLY))
+ udp_leave_multicast_group(s->udp_fd, (struct sockaddr *)&s->dest_addr);
closesocket(s->udp_fd);
-#endif
av_free(s);
return 0;
}
-URLProtocol udp_protocol = {
+URLProtocol ff_udp_protocol = {
"udp",
udp_open,
udp_read,
udp_write,
NULL, /* seek */
udp_close,
+ .url_get_file_handle = udp_get_file_handle,
};
projects / ffmpeg / blobdiff