| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * UDP prototype streaming system | ||
| 3 | * Copyright (c) 2000, 2001, 2002 Fabrice Bellard | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | /** | ||
| 23 | * @file | ||
| 24 | * UDP protocol | ||
| 25 | */ | ||
| 26 | |||
| 27 | #define _DEFAULT_SOURCE | ||
| 28 | #define _BSD_SOURCE /* Needed for using struct ip_mreq with recent glibc */ | ||
| 29 | |||
| 30 | #include "avformat.h" | ||
| 31 | #include "libavutil/avassert.h" | ||
| 32 | #include "libavutil/mem.h" | ||
| 33 | #include "libavutil/parseutils.h" | ||
| 34 | #include "libavutil/fifo.h" | ||
| 35 | #include "libavutil/intreadwrite.h" | ||
| 36 | #include "libavutil/opt.h" | ||
| 37 | #include "libavutil/log.h" | ||
| 38 | #include "libavutil/time.h" | ||
| 39 | #include "internal.h" | ||
| 40 | #include "network.h" | ||
| 41 | #include "os_support.h" | ||
| 42 | #include "url.h" | ||
| 43 | #include "ip.h" | ||
| 44 | |||
| 45 | #ifdef __APPLE__ | ||
| 46 | #include "TargetConditionals.h" | ||
| 47 | #endif | ||
| 48 | |||
| 49 | #if HAVE_UDPLITE_H | ||
| 50 | #include "udplite.h" | ||
| 51 | #else | ||
| 52 | /* On many Linux systems, udplite.h is missing but the kernel supports UDP-Lite. | ||
| 53 | * So, we provide a fallback here. | ||
| 54 | */ | ||
| 55 | #define UDPLITE_SEND_CSCOV 10 | ||
| 56 | #define UDPLITE_RECV_CSCOV 11 | ||
| 57 | #endif | ||
| 58 | |||
| 59 | #ifndef IPPROTO_UDPLITE | ||
| 60 | #define IPPROTO_UDPLITE 136 | ||
| 61 | #endif | ||
| 62 | |||
| 63 | #if HAVE_W32THREADS | ||
| 64 | #undef HAVE_PTHREAD_CANCEL | ||
| 65 | #define HAVE_PTHREAD_CANCEL 1 | ||
| 66 | #endif | ||
| 67 | |||
| 68 | #if HAVE_PTHREAD_CANCEL | ||
| 69 | #include "libavutil/thread.h" | ||
| 70 | #endif | ||
| 71 | |||
| 72 | #ifndef IPV6_ADD_MEMBERSHIP | ||
| 73 | #define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP | ||
| 74 | #define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP | ||
| 75 | #endif | ||
| 76 | |||
| 77 | #define UDP_TX_BUF_SIZE 32768 | ||
| 78 | #define UDP_RX_BUF_SIZE 393216 | ||
| 79 | #define UDP_MAX_PKT_SIZE 65536 | ||
| 80 | #define UDP_HEADER_SIZE 8 | ||
| 81 | |||
| 82 | typedef struct UDPQueuedPacketHeader { | ||
| 83 | int pkt_size; | ||
| 84 | struct sockaddr_storage addr; | ||
| 85 | socklen_t addr_len; | ||
| 86 | } UDPQueuedPacketHeader; | ||
| 87 | |||
| 88 | typedef struct UDPContext { | ||
| 89 | const AVClass *class; | ||
| 90 | int udp_fd; | ||
| 91 | int ttl; | ||
| 92 | int udplite_coverage; | ||
| 93 | int buffer_size; | ||
| 94 | int pkt_size; | ||
| 95 | int is_multicast; | ||
| 96 | int is_broadcast; | ||
| 97 | int local_port; | ||
| 98 | int reuse_socket; | ||
| 99 | int overrun_nonfatal; | ||
| 100 | struct sockaddr_storage dest_addr; | ||
| 101 | int dest_addr_len; | ||
| 102 | int is_connected; | ||
| 103 | |||
| 104 | /* Circular Buffer variables for use in UDP receive code */ | ||
| 105 | int circular_buffer_size; | ||
| 106 | AVFifo *rx_fifo; | ||
| 107 | AVFifo *tx_fifo; | ||
| 108 | int circular_buffer_error; | ||
| 109 | int64_t bitrate; /* number of bits to send per second */ | ||
| 110 | int64_t burst_bits; | ||
| 111 | int close_req; | ||
| 112 | #if HAVE_PTHREAD_CANCEL | ||
| 113 | pthread_t circular_buffer_thread; | ||
| 114 | pthread_mutex_t mutex; | ||
| 115 | pthread_cond_t cond; | ||
| 116 | int thread_started; | ||
| 117 | #endif | ||
| 118 | uint8_t tmp[UDP_MAX_PKT_SIZE + sizeof(UDPQueuedPacketHeader)]; | ||
| 119 | int remaining_in_dg; | ||
| 120 | char *localaddr; | ||
| 121 | int timeout; | ||
| 122 | int dscp; | ||
| 123 | struct sockaddr_storage local_addr_storage; | ||
| 124 | char *sources; | ||
| 125 | char *block; | ||
| 126 | IPSourceFilters filters; | ||
| 127 | struct sockaddr_storage last_recv_addr; | ||
| 128 | socklen_t last_recv_addr_len; | ||
| 129 | } UDPContext; | ||
| 130 | |||
| 131 | #define OFFSET(x) offsetof(UDPContext, x) | ||
| 132 | #define D AV_OPT_FLAG_DECODING_PARAM | ||
| 133 | #define E AV_OPT_FLAG_ENCODING_PARAM | ||
| 134 | static const AVOption options[] = { | ||
| 135 | { "buffer_size", "System data size (in bytes)", OFFSET(buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, | ||
| 136 | { "bitrate", "Bits to send per second", OFFSET(bitrate), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, .flags = E }, | ||
| 137 | { "burst_bits", "Max length of bursts in bits (when using bitrate)", OFFSET(burst_bits), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, .flags = E }, | ||
| 138 | { "localport", "Local port", OFFSET(local_port), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, D|E }, | ||
| 139 | { "local_port", "Local port", OFFSET(local_port), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, | ||
| 140 | { "localaddr", "Local address", OFFSET(localaddr), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E }, | ||
| 141 | { "udplite_coverage", "choose UDPLite head size which should be validated by checksum", OFFSET(udplite_coverage), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D|E }, | ||
| 142 | { "pkt_size", "Maximum UDP packet size", OFFSET(pkt_size), AV_OPT_TYPE_INT, { .i64 = 1472 }, -1, INT_MAX, .flags = D|E }, | ||
| 143 | { "reuse", "explicitly allow reusing UDP sockets", OFFSET(reuse_socket), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, D|E }, | ||
| 144 | { "reuse_socket", "explicitly allow reusing UDP sockets", OFFSET(reuse_socket), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, .flags = D|E }, | ||
| 145 | { "broadcast", "explicitly allow or disallow broadcast destination", OFFSET(is_broadcast), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E }, | ||
| 146 | { "ttl", "Time to live (multicast only)", OFFSET(ttl), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, 255, E }, | ||
| 147 | { "dscp", "DSCP class for outgoing packets", OFFSET(dscp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 63, E }, | ||
| 148 | { "connect", "set if connect() should be called on socket", OFFSET(is_connected), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = D|E }, | ||
| 149 | { "fifo_size", "set the UDP circular buffer size (in 188-byte packets)", OFFSET(circular_buffer_size), AV_OPT_TYPE_INT, {.i64 = HAVE_PTHREAD_CANCEL ? 7*4096 : 0}, 0, INT_MAX, D }, | ||
| 150 | { "overrun_nonfatal", "survive in case of UDP receiving circular buffer overrun", OFFSET(overrun_nonfatal), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, D }, | ||
| 151 | { "timeout", "set raise error timeout, in microseconds (only in read mode)",OFFSET(timeout), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D }, | ||
| 152 | { "sources", "Source list", OFFSET(sources), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E }, | ||
| 153 | { "block", "Block list", OFFSET(block), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E }, | ||
| 154 | { NULL } | ||
| 155 | }; | ||
| 156 | |||
| 157 | static const AVClass udp_class = { | ||
| 158 | .class_name = "udp", | ||
| 159 | .item_name = av_default_item_name, | ||
| 160 | .option = options, | ||
| 161 | .version = LIBAVUTIL_VERSION_INT, | ||
| 162 | }; | ||
| 163 | |||
| 164 | static const AVClass udplite_context_class = { | ||
| 165 | .class_name = "udplite", | ||
| 166 | .item_name = av_default_item_name, | ||
| 167 | .option = options, | ||
| 168 | .version = LIBAVUTIL_VERSION_INT, | ||
| 169 | }; | ||
| 170 | |||
| 171 | ✗ | static int udp_set_multicast_ttl(int sockfd, int mcastTTL, | |
| 172 | struct sockaddr *addr, | ||
| 173 | void *logctx) | ||
| 174 | { | ||
| 175 | int protocol, cmd; | ||
| 176 | |||
| 177 | /* There is some confusion in the world whether IP_MULTICAST_TTL | ||
| 178 | * takes a byte or an int as an argument. | ||
| 179 | * BSD seems to indicate byte so we are going with that and use | ||
| 180 | * int and fall back to byte to be safe */ | ||
| 181 | ✗ | switch (addr->sa_family) { | |
| 182 | #ifdef IP_MULTICAST_TTL | ||
| 183 | ✗ | case AF_INET: | |
| 184 | ✗ | protocol = IPPROTO_IP; | |
| 185 | ✗ | cmd = IP_MULTICAST_TTL; | |
| 186 | ✗ | break; | |
| 187 | #endif | ||
| 188 | #ifdef IPV6_MULTICAST_HOPS | ||
| 189 | ✗ | case AF_INET6: | |
| 190 | ✗ | protocol = IPPROTO_IPV6; | |
| 191 | ✗ | cmd = IPV6_MULTICAST_HOPS; | |
| 192 | ✗ | break; | |
| 193 | #endif | ||
| 194 | ✗ | default: | |
| 195 | ✗ | return 0; | |
| 196 | } | ||
| 197 | |||
| 198 | ✗ | if (setsockopt(sockfd, protocol, cmd, &mcastTTL, sizeof(mcastTTL)) < 0) { | |
| 199 | /* BSD compatibility */ | ||
| 200 | ✗ | unsigned char ttl = (unsigned char) mcastTTL; | |
| 201 | |||
| 202 | ✗ | ff_log_net_error(logctx, AV_LOG_DEBUG, "setsockopt(IPV4/IPV6 MULTICAST TTL)"); | |
| 203 | ✗ | if (setsockopt(sockfd, protocol, cmd, &ttl, sizeof(ttl)) < 0) { | |
| 204 | ✗ | ff_log_net_error(logctx, AV_LOG_ERROR, "setsockopt(IPV4/IPV6 MULTICAST TTL)"); | |
| 205 | ✗ | return ff_neterrno(); | |
| 206 | } | ||
| 207 | } | ||
| 208 | |||
| 209 | ✗ | return 0; | |
| 210 | } | ||
| 211 | |||
| 212 | ✗ | static int udp_join_multicast_group(int sockfd, struct sockaddr *addr, | |
| 213 | struct sockaddr *local_addr, void *logctx) | ||
| 214 | { | ||
| 215 | #ifdef IP_ADD_MEMBERSHIP | ||
| 216 | ✗ | if (addr->sa_family == AF_INET) { | |
| 217 | struct ip_mreq mreq; | ||
| 218 | |||
| 219 | ✗ | mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr; | |
| 220 | ✗ | if (local_addr) | |
| 221 | ✗ | mreq.imr_interface= ((struct sockaddr_in *)local_addr)->sin_addr; | |
| 222 | else | ||
| 223 | ✗ | mreq.imr_interface.s_addr = INADDR_ANY; | |
| 224 | ✗ | if (setsockopt(sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) { | |
| 225 | ✗ | ff_log_net_error(logctx, AV_LOG_ERROR, "setsockopt(IP_ADD_MEMBERSHIP)"); | |
| 226 | ✗ | return ff_neterrno(); | |
| 227 | } | ||
| 228 | } | ||
| 229 | #endif | ||
| 230 | #if HAVE_STRUCT_IPV6_MREQ && defined(IPPROTO_IPV6) | ||
| 231 | ✗ | if (addr->sa_family == AF_INET6) { | |
| 232 | struct ipv6_mreq mreq6; | ||
| 233 | |||
| 234 | ✗ | memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr)); | |
| 235 | //TODO: Interface index should be looked up from local_addr | ||
| 236 | ✗ | mreq6.ipv6mr_interface = 0; | |
| 237 | ✗ | if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) { | |
| 238 | ✗ | ff_log_net_error(logctx, AV_LOG_ERROR, "setsockopt(IPV6_ADD_MEMBERSHIP)"); | |
| 239 | ✗ | return ff_neterrno(); | |
| 240 | } | ||
| 241 | } | ||
| 242 | #endif | ||
| 243 | ✗ | return 0; | |
| 244 | } | ||
| 245 | |||
| 246 | ✗ | static int udp_leave_multicast_group(int sockfd, struct sockaddr *addr, | |
| 247 | struct sockaddr *local_addr, void *logctx) | ||
| 248 | { | ||
| 249 | #ifdef IP_DROP_MEMBERSHIP | ||
| 250 | ✗ | if (addr->sa_family == AF_INET) { | |
| 251 | struct ip_mreq mreq; | ||
| 252 | |||
| 253 | ✗ | mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr; | |
| 254 | ✗ | if (local_addr) | |
| 255 | ✗ | mreq.imr_interface = ((struct sockaddr_in *)local_addr)->sin_addr; | |
| 256 | else | ||
| 257 | ✗ | mreq.imr_interface.s_addr = INADDR_ANY; | |
| 258 | ✗ | if (setsockopt(sockfd, IPPROTO_IP, IP_DROP_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) { | |
| 259 | ✗ | ff_log_net_error(logctx, AV_LOG_ERROR, "setsockopt(IP_DROP_MEMBERSHIP)"); | |
| 260 | ✗ | return -1; | |
| 261 | } | ||
| 262 | } | ||
| 263 | #endif | ||
| 264 | #if HAVE_STRUCT_IPV6_MREQ && defined(IPPROTO_IPV6) | ||
| 265 | ✗ | if (addr->sa_family == AF_INET6) { | |
| 266 | struct ipv6_mreq mreq6; | ||
| 267 | |||
| 268 | ✗ | memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr)); | |
| 269 | //TODO: Interface index should be looked up from local_addr | ||
| 270 | ✗ | mreq6.ipv6mr_interface = 0; | |
| 271 | ✗ | if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) { | |
| 272 | ✗ | ff_log_net_error(logctx, AV_LOG_ERROR, "setsockopt(IPV6_DROP_MEMBERSHIP)"); | |
| 273 | ✗ | return -1; | |
| 274 | } | ||
| 275 | } | ||
| 276 | #endif | ||
| 277 | ✗ | return 0; | |
| 278 | } | ||
| 279 | |||
| 280 | ✗ | static int udp_set_multicast_sources(URLContext *h, | |
| 281 | int sockfd, struct sockaddr *addr, | ||
| 282 | int addr_len, struct sockaddr_storage *local_addr, | ||
| 283 | struct sockaddr_storage *sources, | ||
| 284 | int nb_sources, int include) | ||
| 285 | { | ||
| 286 | ✗ | if (addr->sa_family != AF_INET) { | |
| 287 | #if HAVE_STRUCT_GROUP_SOURCE_REQ && defined(MCAST_BLOCK_SOURCE) | ||
| 288 | /* For IPv4 prefer the old approach, as that alone works reliably on | ||
| 289 | * Windows and it also supports supplying the interface based on its | ||
| 290 | * address. */ | ||
| 291 | ✗ | for (int i = 0; i < nb_sources; i++) { | |
| 292 | struct group_source_req mreqs; | ||
| 293 | ✗ | int level = addr->sa_family == AF_INET ? IPPROTO_IP : IPPROTO_IPV6; | |
| 294 | |||
| 295 | //TODO: Interface index should be looked up from local_addr | ||
| 296 | ✗ | mreqs.gsr_interface = 0; | |
| 297 | ✗ | memcpy(&mreqs.gsr_group, addr, addr_len); | |
| 298 | ✗ | memcpy(&mreqs.gsr_source, &sources[i], sizeof(*sources)); | |
| 299 | |||
| 300 | ✗ | if (setsockopt(sockfd, level, | |
| 301 | include ? MCAST_JOIN_SOURCE_GROUP : MCAST_BLOCK_SOURCE, | ||
| 302 | (const void *)&mreqs, sizeof(mreqs)) < 0) { | ||
| 303 | ✗ | if (include) | |
| 304 | ✗ | ff_log_net_error(h, AV_LOG_ERROR, "setsockopt(MCAST_JOIN_SOURCE_GROUP)"); | |
| 305 | else | ||
| 306 | ✗ | ff_log_net_error(h, AV_LOG_ERROR, "setsockopt(MCAST_BLOCK_SOURCE)"); | |
| 307 | ✗ | return ff_neterrno(); | |
| 308 | } | ||
| 309 | } | ||
| 310 | ✗ | return 0; | |
| 311 | #else | ||
| 312 | av_log(h, AV_LOG_ERROR, | ||
| 313 | "Setting multicast sources only supported for IPv4\n"); | ||
| 314 | return AVERROR(EINVAL); | ||
| 315 | #endif | ||
| 316 | } | ||
| 317 | #if HAVE_STRUCT_IP_MREQ_SOURCE && defined(IP_BLOCK_SOURCE) | ||
| 318 | ✗ | for (int i = 0; i < nb_sources; i++) { | |
| 319 | struct ip_mreq_source mreqs; | ||
| 320 | ✗ | if (sources[i].ss_family != AF_INET) { | |
| 321 | ✗ | av_log(h, AV_LOG_ERROR, "Source/block address %d is of incorrect protocol family\n", i + 1); | |
| 322 | ✗ | return AVERROR(EINVAL); | |
| 323 | } | ||
| 324 | |||
| 325 | ✗ | mreqs.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr; | |
| 326 | ✗ | if (local_addr) | |
| 327 | ✗ | mreqs.imr_interface = ((struct sockaddr_in *)local_addr)->sin_addr; | |
| 328 | else | ||
| 329 | ✗ | mreqs.imr_interface.s_addr = INADDR_ANY; | |
| 330 | ✗ | mreqs.imr_sourceaddr.s_addr = ((struct sockaddr_in *)&sources[i])->sin_addr.s_addr; | |
| 331 | |||
| 332 | ✗ | if (setsockopt(sockfd, IPPROTO_IP, | |
| 333 | include ? IP_ADD_SOURCE_MEMBERSHIP : IP_BLOCK_SOURCE, | ||
| 334 | (const void *)&mreqs, sizeof(mreqs)) < 0) { | ||
| 335 | ✗ | if (include) | |
| 336 | ✗ | ff_log_net_error(h, AV_LOG_ERROR, "setsockopt(IP_ADD_SOURCE_MEMBERSHIP)"); | |
| 337 | else | ||
| 338 | ✗ | ff_log_net_error(h, AV_LOG_ERROR, "setsockopt(IP_BLOCK_SOURCE)"); | |
| 339 | ✗ | return ff_neterrno(); | |
| 340 | } | ||
| 341 | } | ||
| 342 | #else | ||
| 343 | return AVERROR(ENOSYS); | ||
| 344 | #endif | ||
| 345 | ✗ | return 0; | |
| 346 | } | ||
| 347 | ✗ | static int udp_set_url(URLContext *h, | |
| 348 | struct sockaddr_storage *addr, | ||
| 349 | const char *hostname, int port) | ||
| 350 | { | ||
| 351 | struct addrinfo *res0; | ||
| 352 | int addr_len; | ||
| 353 | |||
| 354 | ✗ | res0 = ff_ip_resolve_host(h, hostname, port, SOCK_DGRAM, AF_UNSPEC, 0); | |
| 355 | ✗ | if (!res0) return AVERROR(EIO); | |
| 356 | ✗ | memcpy(addr, res0->ai_addr, res0->ai_addrlen); | |
| 357 | ✗ | addr_len = res0->ai_addrlen; | |
| 358 | ✗ | freeaddrinfo(res0); | |
| 359 | |||
| 360 | ✗ | return addr_len; | |
| 361 | } | ||
| 362 | |||
| 363 | ✗ | static int udp_socket_create(URLContext *h, struct sockaddr_storage *addr, | |
| 364 | socklen_t *addr_len, const char *localaddr) | ||
| 365 | { | ||
| 366 | ✗ | UDPContext *s = h->priv_data; | |
| 367 | ✗ | int udp_fd = -1; | |
| 368 | struct addrinfo *res0, *res; | ||
| 369 | ✗ | int family = AF_UNSPEC; | |
| 370 | |||
| 371 | ✗ | if (((struct sockaddr *) &s->dest_addr)->sa_family) | |
| 372 | ✗ | family = ((struct sockaddr *) &s->dest_addr)->sa_family; | |
| 373 | ✗ | res0 = ff_ip_resolve_host(h, (localaddr && localaddr[0]) ? localaddr : NULL, | |
| 374 | s->local_port, | ||
| 375 | SOCK_DGRAM, family, AI_PASSIVE); | ||
| 376 | ✗ | if (!res0) | |
| 377 | ✗ | goto fail; | |
| 378 | ✗ | for (res = res0; res; res=res->ai_next) { | |
| 379 | ✗ | if (s->udplite_coverage) | |
| 380 | ✗ | udp_fd = ff_socket(res->ai_family, SOCK_DGRAM, IPPROTO_UDPLITE, h); | |
| 381 | else | ||
| 382 | ✗ | udp_fd = ff_socket(res->ai_family, SOCK_DGRAM, 0, h); | |
| 383 | ✗ | if (udp_fd != -1) break; | |
| 384 | ✗ | ff_log_net_error(h, AV_LOG_ERROR, "socket"); | |
| 385 | } | ||
| 386 | |||
| 387 | ✗ | if (udp_fd < 0) | |
| 388 | ✗ | goto fail; | |
| 389 | |||
| 390 | ✗ | memcpy(addr, res->ai_addr, res->ai_addrlen); | |
| 391 | ✗ | *addr_len = res->ai_addrlen; | |
| 392 | |||
| 393 | ✗ | freeaddrinfo(res0); | |
| 394 | |||
| 395 | ✗ | return udp_fd; | |
| 396 | |||
| 397 | ✗ | fail: | |
| 398 | ✗ | if (udp_fd >= 0) | |
| 399 | ✗ | closesocket(udp_fd); | |
| 400 | ✗ | if(res0) | |
| 401 | ✗ | freeaddrinfo(res0); | |
| 402 | ✗ | return -1; | |
| 403 | } | ||
| 404 | |||
| 405 | ✗ | static int udp_port(struct sockaddr_storage *addr, int addr_len) | |
| 406 | { | ||
| 407 | char sbuf[sizeof(int)*3+1]; | ||
| 408 | int error; | ||
| 409 | |||
| 410 | ✗ | if ((error = getnameinfo((struct sockaddr *)addr, addr_len, NULL, 0, sbuf, sizeof(sbuf), NI_NUMERICSERV)) != 0) { | |
| 411 | ✗ | av_log(NULL, AV_LOG_ERROR, "getnameinfo: %s\n", gai_strerror(error)); | |
| 412 | ✗ | return -1; | |
| 413 | } | ||
| 414 | |||
| 415 | ✗ | return strtol(sbuf, NULL, 10); | |
| 416 | } | ||
| 417 | |||
| 418 | |||
| 419 | /** | ||
| 420 | * If no filename is given to av_open_input_file because you want to | ||
| 421 | * get the local port first, then you must call this function to set | ||
| 422 | * the remote server address. | ||
| 423 | * | ||
| 424 | * url syntax: udp://host:port[?option=val...] | ||
| 425 | * option: 'ttl=n' : set the ttl value (for multicast only) | ||
| 426 | * 'localport=n' : set the local port | ||
| 427 | * 'pkt_size=n' : set max packet size | ||
| 428 | * 'reuse=1' : enable reusing the socket | ||
| 429 | * 'overrun_nonfatal=1': survive in case of circular buffer overrun | ||
| 430 | * | ||
| 431 | * @param h media file context | ||
| 432 | * @param uri of the remote server | ||
| 433 | * @return zero if no error. | ||
| 434 | */ | ||
| 435 | ✗ | int ff_udp_set_remote_url(URLContext *h, const char *uri) | |
| 436 | { | ||
| 437 | ✗ | UDPContext *s = h->priv_data; | |
| 438 | char hostname[256], buf[10]; | ||
| 439 | int port; | ||
| 440 | const char *p; | ||
| 441 | |||
| 442 | ✗ | av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri); | |
| 443 | |||
| 444 | /* set the destination address */ | ||
| 445 | ✗ | s->dest_addr_len = udp_set_url(h, &s->dest_addr, hostname, port); | |
| 446 | ✗ | if (s->dest_addr_len < 0) { | |
| 447 | ✗ | return AVERROR(EIO); | |
| 448 | } | ||
| 449 | ✗ | s->is_multicast = ff_is_multicast_address((struct sockaddr*) &s->dest_addr); | |
| 450 | ✗ | p = strchr(uri, '?'); | |
| 451 | ✗ | if (p) { | |
| 452 | ✗ | if (av_find_info_tag(buf, sizeof(buf), "connect", p)) { | |
| 453 | ✗ | int was_connected = s->is_connected; | |
| 454 | ✗ | s->is_connected = strtol(buf, NULL, 10); | |
| 455 | ✗ | if (s->is_connected && !was_connected) { | |
| 456 | ✗ | if (connect(s->udp_fd, (struct sockaddr *) &s->dest_addr, | |
| 457 | ✗ | s->dest_addr_len)) { | |
| 458 | ✗ | s->is_connected = 0; | |
| 459 | ✗ | ff_log_net_error(h, AV_LOG_ERROR, "connect"); | |
| 460 | ✗ | return AVERROR(EIO); | |
| 461 | } | ||
| 462 | } | ||
| 463 | } | ||
| 464 | } | ||
| 465 | |||
| 466 | ✗ | return 0; | |
| 467 | } | ||
| 468 | |||
| 469 | /** | ||
| 470 | * This function is identical to ff_udp_set_remote_url, except that it takes a sockaddr directly. | ||
| 471 | */ | ||
| 472 | ✗ | int ff_udp_set_remote_addr(URLContext *h, const struct sockaddr *dest_addr, socklen_t dest_addr_len, int do_connect) | |
| 473 | { | ||
| 474 | ✗ | UDPContext *s = h->priv_data; | |
| 475 | |||
| 476 | /* set the destination address */ | ||
| 477 | ✗ | if ((size_t)dest_addr_len > sizeof(s->dest_addr)) | |
| 478 | ✗ | return AVERROR(EIO); | |
| 479 | ✗ | s->dest_addr_len = dest_addr_len; | |
| 480 | ✗ | memcpy(&s->dest_addr, dest_addr, dest_addr_len); | |
| 481 | |||
| 482 | ✗ | s->is_multicast = ff_is_multicast_address((struct sockaddr*) &s->dest_addr); | |
| 483 | ✗ | if (do_connect >= 0) { | |
| 484 | ✗ | int was_connected = s->is_connected; | |
| 485 | ✗ | s->is_connected = do_connect; | |
| 486 | ✗ | if (s->is_connected && !was_connected) { | |
| 487 | ✗ | if (connect(s->udp_fd, (struct sockaddr *) &s->dest_addr, | |
| 488 | ✗ | s->dest_addr_len)) { | |
| 489 | ✗ | s->is_connected = 0; | |
| 490 | ✗ | ff_log_net_error(h, AV_LOG_ERROR, "connect"); | |
| 491 | ✗ | return AVERROR(EIO); | |
| 492 | } | ||
| 493 | } | ||
| 494 | } | ||
| 495 | |||
| 496 | ✗ | return 0; | |
| 497 | } | ||
| 498 | |||
| 499 | /** | ||
| 500 | * Return the local port used by the UDP connection | ||
| 501 | * @param h media file context | ||
| 502 | * @return the local port number | ||
| 503 | */ | ||
| 504 | ✗ | int ff_udp_get_local_port(URLContext *h) | |
| 505 | { | ||
| 506 | ✗ | UDPContext *s = h->priv_data; | |
| 507 | ✗ | return s->local_port; | |
| 508 | } | ||
| 509 | |||
| 510 | ✗ | void ff_udp_get_last_recv_addr(URLContext *h, struct sockaddr_storage *addr, socklen_t *addr_len) | |
| 511 | { | ||
| 512 | ✗ | UDPContext *s = h->priv_data; | |
| 513 | ✗ | *addr = s->last_recv_addr; | |
| 514 | ✗ | *addr_len = s->last_recv_addr_len; | |
| 515 | ✗ | } | |
| 516 | |||
| 517 | /** | ||
| 518 | * Return the udp file handle for select() usage to wait for several RTP | ||
| 519 | * streams at the same time. | ||
| 520 | * @param h media file context | ||
| 521 | */ | ||
| 522 | ✗ | static int udp_get_file_handle(URLContext *h) | |
| 523 | { | ||
| 524 | ✗ | UDPContext *s = h->priv_data; | |
| 525 | ✗ | return s->udp_fd; | |
| 526 | } | ||
| 527 | |||
| 528 | #if HAVE_PTHREAD_CANCEL | ||
| 529 | ✗ | static void *circular_buffer_task_rx( void *_URLContext) | |
| 530 | { | ||
| 531 | ✗ | URLContext *h = _URLContext; | |
| 532 | ✗ | UDPContext *s = h->priv_data; | |
| 533 | int old_cancelstate; | ||
| 534 | |||
| 535 | ✗ | ff_thread_setname("udp-rx"); | |
| 536 | |||
| 537 | ✗ | pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &old_cancelstate); | |
| 538 | ✗ | pthread_mutex_lock(&s->mutex); | |
| 539 | ✗ | if (ff_socket_nonblock(s->udp_fd, 0) < 0) { | |
| 540 | ✗ | av_log(h, AV_LOG_ERROR, "Failed to set blocking mode"); | |
| 541 | ✗ | s->circular_buffer_error = AVERROR(EIO); | |
| 542 | ✗ | goto end; | |
| 543 | } | ||
| 544 | ✗ | while(1) { | |
| 545 | UDPQueuedPacketHeader pkt_header; | ||
| 546 | |||
| 547 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 548 | /* Blocking operations are always cancellation points; | ||
| 549 | see "General Information" / "Thread Cancellation Overview" | ||
| 550 | in Single Unix. */ | ||
| 551 | ✗ | pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old_cancelstate); | |
| 552 | ✗ | pkt_header.pkt_size = recvfrom(s->udp_fd, s->tmp + sizeof(pkt_header), sizeof(s->tmp) - sizeof(pkt_header), 0, (struct sockaddr *)&pkt_header.addr, &pkt_header.addr_len); | |
| 553 | ✗ | pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &old_cancelstate); | |
| 554 | ✗ | pthread_mutex_lock(&s->mutex); | |
| 555 | ✗ | if (pkt_header.pkt_size < 0) { | |
| 556 | ✗ | if (ff_neterrno() != AVERROR(EAGAIN) && ff_neterrno() != AVERROR(EINTR)) { | |
| 557 | ✗ | s->circular_buffer_error = ff_neterrno(); | |
| 558 | ✗ | goto end; | |
| 559 | } | ||
| 560 | ✗ | continue; | |
| 561 | } | ||
| 562 | ✗ | if (ff_ip_check_source_lists(&pkt_header.addr, &s->filters)) | |
| 563 | ✗ | continue; | |
| 564 | ✗ | memcpy(s->tmp, &pkt_header, sizeof(pkt_header)); | |
| 565 | |||
| 566 | ✗ | if (av_fifo_can_write(s->rx_fifo) < pkt_header.pkt_size + sizeof(pkt_header)) { | |
| 567 | /* No Space left */ | ||
| 568 | ✗ | if (s->overrun_nonfatal) { | |
| 569 | ✗ | av_log(h, AV_LOG_WARNING, "Circular buffer overrun. " | |
| 570 | "Surviving due to overrun_nonfatal option\n"); | ||
| 571 | ✗ | continue; | |
| 572 | } else { | ||
| 573 | ✗ | av_log(h, AV_LOG_ERROR, "Circular buffer overrun. " | |
| 574 | "To avoid, increase fifo_size URL option. " | ||
| 575 | "To survive in such case, use overrun_nonfatal option\n"); | ||
| 576 | ✗ | s->circular_buffer_error = AVERROR(EIO); | |
| 577 | ✗ | goto end; | |
| 578 | } | ||
| 579 | } | ||
| 580 | ✗ | av_fifo_write(s->rx_fifo, s->tmp, pkt_header.pkt_size + sizeof(pkt_header)); | |
| 581 | ✗ | pthread_cond_signal(&s->cond); | |
| 582 | } | ||
| 583 | |||
| 584 | ✗ | end: | |
| 585 | ✗ | pthread_cond_signal(&s->cond); | |
| 586 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 587 | ✗ | return NULL; | |
| 588 | } | ||
| 589 | |||
| 590 | ✗ | static void *circular_buffer_task_tx( void *_URLContext) | |
| 591 | { | ||
| 592 | ✗ | URLContext *h = _URLContext; | |
| 593 | ✗ | UDPContext *s = h->priv_data; | |
| 594 | ✗ | int64_t target_timestamp = av_gettime_relative(); | |
| 595 | ✗ | int64_t start_timestamp = av_gettime_relative(); | |
| 596 | ✗ | int64_t sent_bits = 0; | |
| 597 | ✗ | int64_t burst_interval = s->bitrate ? (s->burst_bits * 1000000 / s->bitrate) : 0; | |
| 598 | ✗ | int64_t max_delay = s->bitrate ? ((int64_t)h->max_packet_size * 8 * 1000000 / s->bitrate + 1) : 0; | |
| 599 | |||
| 600 | ✗ | ff_thread_setname("udp-tx"); | |
| 601 | |||
| 602 | ✗ | pthread_mutex_lock(&s->mutex); | |
| 603 | |||
| 604 | ✗ | if (ff_socket_nonblock(s->udp_fd, 0) < 0) { | |
| 605 | ✗ | av_log(h, AV_LOG_ERROR, "Failed to set blocking mode"); | |
| 606 | ✗ | s->circular_buffer_error = AVERROR(EIO); | |
| 607 | ✗ | goto end; | |
| 608 | } | ||
| 609 | |||
| 610 | ✗ | for(;;) { | |
| 611 | int len; | ||
| 612 | const uint8_t *p; | ||
| 613 | uint8_t tmp[4]; | ||
| 614 | int64_t timestamp; | ||
| 615 | |||
| 616 | ✗ | len = av_fifo_can_read(s->tx_fifo); | |
| 617 | |||
| 618 | ✗ | while (len<4) { | |
| 619 | ✗ | if (s->close_req) | |
| 620 | ✗ | goto end; | |
| 621 | ✗ | pthread_cond_wait(&s->cond, &s->mutex); | |
| 622 | ✗ | len = av_fifo_can_read(s->tx_fifo); | |
| 623 | } | ||
| 624 | |||
| 625 | ✗ | av_fifo_read(s->tx_fifo, tmp, 4); | |
| 626 | ✗ | len = AV_RL32(tmp); | |
| 627 | |||
| 628 | ✗ | av_assert0(len >= 0); | |
| 629 | ✗ | av_assert0(len <= sizeof(s->tmp)); | |
| 630 | |||
| 631 | ✗ | av_fifo_read(s->tx_fifo, s->tmp, len); | |
| 632 | |||
| 633 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 634 | |||
| 635 | ✗ | if (s->bitrate) { | |
| 636 | ✗ | timestamp = av_gettime_relative(); | |
| 637 | ✗ | if (timestamp < target_timestamp) { | |
| 638 | ✗ | int64_t delay = target_timestamp - timestamp; | |
| 639 | ✗ | if (delay > max_delay) { | |
| 640 | ✗ | delay = max_delay; | |
| 641 | ✗ | start_timestamp = timestamp + delay; | |
| 642 | ✗ | sent_bits = 0; | |
| 643 | } | ||
| 644 | ✗ | av_usleep(delay); | |
| 645 | } else { | ||
| 646 | ✗ | if (timestamp - burst_interval > target_timestamp) { | |
| 647 | ✗ | start_timestamp = timestamp - burst_interval; | |
| 648 | ✗ | sent_bits = 0; | |
| 649 | } | ||
| 650 | } | ||
| 651 | ✗ | sent_bits += len * 8; | |
| 652 | ✗ | target_timestamp = start_timestamp + sent_bits * 1000000 / s->bitrate; | |
| 653 | } | ||
| 654 | |||
| 655 | ✗ | p = s->tmp; | |
| 656 | ✗ | while (len) { | |
| 657 | int ret; | ||
| 658 | ✗ | av_assert0(len > 0); | |
| 659 | ✗ | if (!s->is_connected) { | |
| 660 | ✗ | ret = sendto (s->udp_fd, p, len, 0, | |
| 661 | ✗ | (struct sockaddr *) &s->dest_addr, | |
| 662 | ✗ | s->dest_addr_len); | |
| 663 | } else | ||
| 664 | ✗ | ret = send(s->udp_fd, p, len, 0); | |
| 665 | ✗ | if (ret >= 0) { | |
| 666 | ✗ | len -= ret; | |
| 667 | ✗ | p += ret; | |
| 668 | } else { | ||
| 669 | ✗ | ret = ff_neterrno(); | |
| 670 | ✗ | if (ret != AVERROR(EAGAIN) && ret != AVERROR(EINTR)) { | |
| 671 | ✗ | pthread_mutex_lock(&s->mutex); | |
| 672 | ✗ | s->circular_buffer_error = ret; | |
| 673 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 674 | ✗ | return NULL; | |
| 675 | } | ||
| 676 | } | ||
| 677 | } | ||
| 678 | |||
| 679 | ✗ | pthread_mutex_lock(&s->mutex); | |
| 680 | } | ||
| 681 | |||
| 682 | ✗ | end: | |
| 683 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 684 | ✗ | return NULL; | |
| 685 | } | ||
| 686 | |||
| 687 | |||
| 688 | #endif | ||
| 689 | |||
| 690 | /* put it in UDP context */ | ||
| 691 | /* return non zero if error */ | ||
| 692 | ✗ | static int udp_open(URLContext *h, const char *uri, int flags) | |
| 693 | { | ||
| 694 | char hostname[1024]; | ||
| 695 | ✗ | int port, udp_fd = -1, tmp, bind_ret = -1; | |
| 696 | ✗ | UDPContext *s = h->priv_data; | |
| 697 | int is_output; | ||
| 698 | const char *p; | ||
| 699 | struct sockaddr_storage my_addr; | ||
| 700 | socklen_t len; | ||
| 701 | int ret; | ||
| 702 | |||
| 703 | ✗ | h->is_streamed = 1; | |
| 704 | |||
| 705 | ✗ | is_output = !(flags & AVIO_FLAG_READ); | |
| 706 | ✗ | if (s->buffer_size < 0) | |
| 707 | ✗ | s->buffer_size = is_output ? UDP_TX_BUF_SIZE : UDP_RX_BUF_SIZE; | |
| 708 | |||
| 709 | ✗ | p = strchr(uri, '?'); | |
| 710 | ✗ | if (p) { | |
| 711 | ✗ | ret = ff_parse_opts_from_query_string(s, p, 1); | |
| 712 | ✗ | if (ret < 0) | |
| 713 | ✗ | goto fail; | |
| 714 | } | ||
| 715 | if (!HAVE_PTHREAD_CANCEL) { | ||
| 716 | int64_t optvals[] = {s->overrun_nonfatal, s->bitrate, s->circular_buffer_size}; | ||
| 717 | const char* optnames[] = { "overrun_nonfatal", "bitrate", "fifo_size"}; | ||
| 718 | for (unsigned i = 0; i < FF_ARRAY_ELEMS(optvals); i++) { | ||
| 719 | if (optvals[i]) | ||
| 720 | av_log(h, AV_LOG_WARNING, | ||
| 721 | "'%s' option was set but it is not supported " | ||
| 722 | "on this build (pthread support is required)\n", optnames[i]); | ||
| 723 | } | ||
| 724 | } | ||
| 725 | ✗ | if (s->sources) { | |
| 726 | ✗ | if ((ret = ff_ip_parse_sources(h, s->sources, &s->filters)) < 0) | |
| 727 | ✗ | goto fail; | |
| 728 | } | ||
| 729 | ✗ | if (s->block) { | |
| 730 | ✗ | if ((ret = ff_ip_parse_blocks(h, s->block, &s->filters)) < 0) | |
| 731 | ✗ | goto fail; | |
| 732 | } | ||
| 733 | |||
| 734 | /* handling needed to support options picking from both AVOption and URL */ | ||
| 735 | ✗ | s->circular_buffer_size *= 188; | |
| 736 | ✗ | if (flags & AVIO_FLAG_WRITE) { | |
| 737 | ✗ | h->max_packet_size = s->pkt_size; | |
| 738 | } else { | ||
| 739 | ✗ | h->max_packet_size = UDP_MAX_PKT_SIZE; | |
| 740 | } | ||
| 741 | ✗ | h->rw_timeout = s->timeout; | |
| 742 | |||
| 743 | /* fill the dest addr */ | ||
| 744 | ✗ | av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri); | |
| 745 | |||
| 746 | /* XXX: fix av_url_split */ | ||
| 747 | ✗ | if (hostname[0] == '\0' || hostname[0] == '?') { | |
| 748 | /* only accepts null hostname if input */ | ||
| 749 | ✗ | if (!(flags & AVIO_FLAG_READ)) { | |
| 750 | ✗ | ret = AVERROR(EINVAL); | |
| 751 | ✗ | goto fail; | |
| 752 | } | ||
| 753 | } else { | ||
| 754 | ✗ | if ((ret = ff_udp_set_remote_url(h, uri)) < 0) | |
| 755 | ✗ | goto fail; | |
| 756 | } | ||
| 757 | |||
| 758 | ✗ | if ((s->is_multicast || s->local_port < 0) && (h->flags & AVIO_FLAG_READ)) | |
| 759 | ✗ | s->local_port = port; | |
| 760 | |||
| 761 | ✗ | udp_fd = udp_socket_create(h, &my_addr, &len, s->localaddr); | |
| 762 | ✗ | if (udp_fd < 0) { | |
| 763 | ✗ | ret = AVERROR(EIO); | |
| 764 | ✗ | goto fail; | |
| 765 | } | ||
| 766 | |||
| 767 | ✗ | s->local_addr_storage=my_addr; //store for future multicast join | |
| 768 | |||
| 769 | /* Follow the requested reuse option, unless it's multicast in which | ||
| 770 | * case enable reuse unless explicitly disabled. | ||
| 771 | */ | ||
| 772 | ✗ | if (s->reuse_socket > 0 || (s->is_multicast && s->reuse_socket < 0)) { | |
| 773 | ✗ | s->reuse_socket = 1; | |
| 774 | ✗ | if (setsockopt (udp_fd, SOL_SOCKET, SO_REUSEADDR, &(s->reuse_socket), sizeof(s->reuse_socket)) != 0) { | |
| 775 | ✗ | ret = ff_neterrno(); | |
| 776 | ✗ | goto fail; | |
| 777 | } | ||
| 778 | } | ||
| 779 | |||
| 780 | ✗ | if (s->is_broadcast) { | |
| 781 | #ifdef SO_BROADCAST | ||
| 782 | ✗ | if (setsockopt (udp_fd, SOL_SOCKET, SO_BROADCAST, &(s->is_broadcast), sizeof(s->is_broadcast)) != 0) { | |
| 783 | ✗ | ret = ff_neterrno(); | |
| 784 | ✗ | goto fail; | |
| 785 | } | ||
| 786 | #else | ||
| 787 | ret = AVERROR(ENOSYS); | ||
| 788 | goto fail; | ||
| 789 | #endif | ||
| 790 | } | ||
| 791 | |||
| 792 | /* Set the checksum coverage for UDP-Lite (RFC 3828) for sending and receiving. | ||
| 793 | * The receiver coverage has to be less than or equal to the sender coverage. | ||
| 794 | * Otherwise, the receiver will drop all packets. | ||
| 795 | */ | ||
| 796 | ✗ | if (s->udplite_coverage) { | |
| 797 | ✗ | if (setsockopt (udp_fd, IPPROTO_UDPLITE, UDPLITE_SEND_CSCOV, &(s->udplite_coverage), sizeof(s->udplite_coverage)) != 0) | |
| 798 | ✗ | av_log(h, AV_LOG_WARNING, "socket option UDPLITE_SEND_CSCOV not available"); | |
| 799 | |||
| 800 | ✗ | if (setsockopt (udp_fd, IPPROTO_UDPLITE, UDPLITE_RECV_CSCOV, &(s->udplite_coverage), sizeof(s->udplite_coverage)) != 0) | |
| 801 | ✗ | av_log(h, AV_LOG_WARNING, "socket option UDPLITE_RECV_CSCOV not available"); | |
| 802 | } | ||
| 803 | |||
| 804 | ✗ | if (s->dscp >= 0) { | |
| 805 | ✗ | int dscp = s->dscp << 2; | |
| 806 | ✗ | if (setsockopt (udp_fd, IPPROTO_IP, IP_TOS, &dscp, sizeof(dscp)) != 0) { | |
| 807 | ✗ | ret = ff_neterrno(); | |
| 808 | ✗ | goto fail; | |
| 809 | } | ||
| 810 | } | ||
| 811 | |||
| 812 | /* If multicast, try binding the multicast address first, to avoid | ||
| 813 | * receiving UDP packets from other sources aimed at the same UDP | ||
| 814 | * port. This fails on windows. This makes sending to the same address | ||
| 815 | * using sendto() fail, so only do it if we're opened in read-only mode. */ | ||
| 816 | ✗ | if (s->is_multicast && (h->flags & AVIO_FLAG_READ)) { | |
| 817 | ✗ | bind_ret = bind(udp_fd,(struct sockaddr *)&s->dest_addr, len); | |
| 818 | } | ||
| 819 | /* bind to the local address if not multicast or if the multicast | ||
| 820 | * bind failed */ | ||
| 821 | /* the bind is needed to give a port to the socket now */ | ||
| 822 | ✗ | if (bind_ret < 0 && bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0) { | |
| 823 | ✗ | ff_log_net_error(h, AV_LOG_ERROR, "bind failed"); | |
| 824 | ✗ | ret = ff_neterrno(); | |
| 825 | ✗ | goto fail; | |
| 826 | } | ||
| 827 | |||
| 828 | ✗ | len = sizeof(my_addr); | |
| 829 | ✗ | getsockname(udp_fd, (struct sockaddr *)&my_addr, &len); | |
| 830 | ✗ | s->local_port = udp_port(&my_addr, len); | |
| 831 | |||
| 832 | ✗ | if (s->is_multicast) { | |
| 833 | ✗ | if (h->flags & AVIO_FLAG_WRITE) { | |
| 834 | /* output */ | ||
| 835 | ✗ | if ((ret = udp_set_multicast_ttl(udp_fd, s->ttl, (struct sockaddr *)&s->dest_addr, h)) < 0) | |
| 836 | ✗ | goto fail; | |
| 837 | } | ||
| 838 | ✗ | if (h->flags & AVIO_FLAG_READ) { | |
| 839 | /* input */ | ||
| 840 | ✗ | if (s->filters.nb_include_addrs) { | |
| 841 | ✗ | if ((ret = udp_set_multicast_sources(h, udp_fd, | |
| 842 | ✗ | (struct sockaddr *)&s->dest_addr, | |
| 843 | s->dest_addr_len, &s->local_addr_storage, | ||
| 844 | s->filters.include_addrs, | ||
| 845 | s->filters.nb_include_addrs, 1)) < 0) | ||
| 846 | ✗ | goto fail; | |
| 847 | } else { | ||
| 848 | ✗ | if ((ret = udp_join_multicast_group(udp_fd, (struct sockaddr *)&s->dest_addr, | |
| 849 | ✗ | (struct sockaddr *)&s->local_addr_storage, h)) < 0) | |
| 850 | ✗ | goto fail; | |
| 851 | } | ||
| 852 | ✗ | if (s->filters.nb_exclude_addrs) { | |
| 853 | ✗ | if ((ret = udp_set_multicast_sources(h, udp_fd, | |
| 854 | ✗ | (struct sockaddr *)&s->dest_addr, | |
| 855 | s->dest_addr_len, &s->local_addr_storage, | ||
| 856 | s->filters.exclude_addrs, | ||
| 857 | s->filters.nb_exclude_addrs, 0)) < 0) | ||
| 858 | ✗ | goto fail; | |
| 859 | } | ||
| 860 | } | ||
| 861 | } | ||
| 862 | |||
| 863 | ✗ | if (is_output) { | |
| 864 | /* limit the tx buf size to limit latency */ | ||
| 865 | ✗ | tmp = s->buffer_size; | |
| 866 | ✗ | if (setsockopt(udp_fd, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp)) < 0) { | |
| 867 | ✗ | ff_log_net_error(h, AV_LOG_ERROR, "setsockopt(SO_SNDBUF)"); | |
| 868 | ✗ | ret = ff_neterrno(); | |
| 869 | ✗ | goto fail; | |
| 870 | } | ||
| 871 | } else { | ||
| 872 | /* set udp recv buffer size to the requested value (default UDP_RX_BUF_SIZE) */ | ||
| 873 | ✗ | tmp = s->buffer_size; | |
| 874 | ✗ | if (setsockopt(udp_fd, SOL_SOCKET, SO_RCVBUF, &tmp, sizeof(tmp)) < 0) { | |
| 875 | ✗ | ff_log_net_error(h, AV_LOG_WARNING, "setsockopt(SO_RECVBUF)"); | |
| 876 | } | ||
| 877 | ✗ | len = sizeof(tmp); | |
| 878 | ✗ | if (getsockopt(udp_fd, SOL_SOCKET, SO_RCVBUF, &tmp, &len) < 0) { | |
| 879 | ✗ | ff_log_net_error(h, AV_LOG_WARNING, "getsockopt(SO_RCVBUF)"); | |
| 880 | } else { | ||
| 881 | ✗ | av_log(h, AV_LOG_DEBUG, "end receive buffer size reported is %d\n", tmp); | |
| 882 | ✗ | if(tmp < s->buffer_size) | |
| 883 | ✗ | av_log(h, AV_LOG_WARNING, "attempted to set receive buffer to size %d but it only ended up set as %d\n", s->buffer_size, tmp); | |
| 884 | } | ||
| 885 | |||
| 886 | /* make the socket non-blocking */ | ||
| 887 | ✗ | ff_socket_nonblock(udp_fd, 1); | |
| 888 | } | ||
| 889 | ✗ | if (s->is_connected) { | |
| 890 | ✗ | if (connect(udp_fd, (struct sockaddr *) &s->dest_addr, s->dest_addr_len)) { | |
| 891 | ✗ | ff_log_net_error(h, AV_LOG_ERROR, "connect"); | |
| 892 | ✗ | ret = ff_neterrno(); | |
| 893 | ✗ | goto fail; | |
| 894 | } | ||
| 895 | } | ||
| 896 | |||
| 897 | ✗ | s->udp_fd = udp_fd; | |
| 898 | |||
| 899 | #if HAVE_PTHREAD_CANCEL | ||
| 900 | /* | ||
| 901 | Create thread in case of: | ||
| 902 | 1. Input and circular_buffer_size is set | ||
| 903 | 2. Output and bitrate and circular_buffer_size is set | ||
| 904 | */ | ||
| 905 | |||
| 906 | ✗ | if (is_output && s->bitrate && !s->circular_buffer_size) { | |
| 907 | /* Warn user in case of 'circular_buffer_size' is not set */ | ||
| 908 | ✗ | av_log(h, AV_LOG_WARNING,"'bitrate' option was set but 'circular_buffer_size' is not, but required\n"); | |
| 909 | } | ||
| 910 | |||
| 911 | ✗ | if ((!is_output && s->circular_buffer_size) || (is_output && s->bitrate && s->circular_buffer_size)) { | |
| 912 | /* start the task going */ | ||
| 913 | ✗ | AVFifo *fifo = av_fifo_alloc2(s->circular_buffer_size, 1, 0); | |
| 914 | ✗ | if (!fifo) { | |
| 915 | ✗ | ret = AVERROR(ENOMEM); | |
| 916 | ✗ | goto fail; | |
| 917 | } | ||
| 918 | ✗ | if (is_output) | |
| 919 | ✗ | s->tx_fifo = fifo; | |
| 920 | else | ||
| 921 | ✗ | s->rx_fifo = fifo; | |
| 922 | ✗ | ret = pthread_mutex_init(&s->mutex, NULL); | |
| 923 | ✗ | if (ret != 0) { | |
| 924 | ✗ | av_log(h, AV_LOG_ERROR, "pthread_mutex_init failed : %s\n", strerror(ret)); | |
| 925 | ✗ | ret = AVERROR(ret); | |
| 926 | ✗ | goto fail; | |
| 927 | } | ||
| 928 | ✗ | ret = pthread_cond_init(&s->cond, NULL); | |
| 929 | ✗ | if (ret != 0) { | |
| 930 | ✗ | av_log(h, AV_LOG_ERROR, "pthread_cond_init failed : %s\n", strerror(ret)); | |
| 931 | ✗ | ret = AVERROR(ret); | |
| 932 | ✗ | goto cond_fail; | |
| 933 | } | ||
| 934 | ✗ | ret = pthread_create(&s->circular_buffer_thread, NULL, is_output?circular_buffer_task_tx:circular_buffer_task_rx, h); | |
| 935 | ✗ | if (ret != 0) { | |
| 936 | ✗ | av_log(h, AV_LOG_ERROR, "pthread_create failed : %s\n", strerror(ret)); | |
| 937 | ✗ | ret = AVERROR(ret); | |
| 938 | ✗ | goto thread_fail; | |
| 939 | } | ||
| 940 | ✗ | s->thread_started = 1; | |
| 941 | } | ||
| 942 | #endif | ||
| 943 | |||
| 944 | ✗ | return 0; | |
| 945 | #if HAVE_PTHREAD_CANCEL | ||
| 946 | ✗ | thread_fail: | |
| 947 | ✗ | pthread_cond_destroy(&s->cond); | |
| 948 | ✗ | cond_fail: | |
| 949 | ✗ | pthread_mutex_destroy(&s->mutex); | |
| 950 | #endif | ||
| 951 | ✗ | fail: | |
| 952 | ✗ | if (udp_fd >= 0) | |
| 953 | ✗ | closesocket(udp_fd); | |
| 954 | ✗ | av_fifo_freep2(&s->rx_fifo); | |
| 955 | ✗ | av_fifo_freep2(&s->tx_fifo); | |
| 956 | ✗ | ff_ip_reset_filters(&s->filters); | |
| 957 | ✗ | return ret; | |
| 958 | } | ||
| 959 | |||
| 960 | ✗ | static int udplite_open(URLContext *h, const char *uri, int flags) | |
| 961 | { | ||
| 962 | ✗ | UDPContext *s = h->priv_data; | |
| 963 | |||
| 964 | // set default checksum coverage | ||
| 965 | ✗ | s->udplite_coverage = UDP_HEADER_SIZE; | |
| 966 | |||
| 967 | ✗ | return udp_open(h, uri, flags); | |
| 968 | } | ||
| 969 | |||
| 970 | ✗ | static int udp_read(URLContext *h, uint8_t *buf, int size) | |
| 971 | { | ||
| 972 | ✗ | UDPContext *s = h->priv_data; | |
| 973 | int ret; | ||
| 974 | #if HAVE_PTHREAD_CANCEL | ||
| 975 | ✗ | int avail, nonblock = h->flags & AVIO_FLAG_NONBLOCK; | |
| 976 | |||
| 977 | ✗ | if (s->rx_fifo) { | |
| 978 | ✗ | pthread_mutex_lock(&s->mutex); | |
| 979 | do { | ||
| 980 | ✗ | avail = av_fifo_can_read(s->rx_fifo); | |
| 981 | ✗ | if (avail) { // >=size) { | |
| 982 | UDPQueuedPacketHeader header; | ||
| 983 | |||
| 984 | ✗ | av_fifo_read(s->rx_fifo, &header, sizeof(header)); | |
| 985 | |||
| 986 | ✗ | s->last_recv_addr = header.addr; | |
| 987 | ✗ | s->last_recv_addr_len = header.addr_len; | |
| 988 | |||
| 989 | ✗ | avail = header.pkt_size; | |
| 990 | ✗ | if(avail > size){ | |
| 991 | ✗ | av_log(h, AV_LOG_WARNING, "Part of datagram lost due to insufficient buffer size\n"); | |
| 992 | ✗ | avail = size; | |
| 993 | } | ||
| 994 | |||
| 995 | ✗ | av_fifo_read(s->rx_fifo, buf, avail); | |
| 996 | ✗ | av_fifo_drain2(s->rx_fifo, header.pkt_size - avail); | |
| 997 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 998 | ✗ | return avail; | |
| 999 | ✗ | } else if(s->circular_buffer_error){ | |
| 1000 | ✗ | int err = s->circular_buffer_error; | |
| 1001 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 1002 | ✗ | return err; | |
| 1003 | ✗ | } else if(nonblock) { | |
| 1004 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 1005 | ✗ | return AVERROR(EAGAIN); | |
| 1006 | } else { | ||
| 1007 | /* FIXME: using the monotonic clock would be better, | ||
| 1008 | but it does not exist on all supported platforms. */ | ||
| 1009 | ✗ | int64_t t = av_gettime() + 100000; | |
| 1010 | ✗ | struct timespec tv = { .tv_sec = t / 1000000, | |
| 1011 | ✗ | .tv_nsec = (t % 1000000) * 1000 }; | |
| 1012 | ✗ | int err = pthread_cond_timedwait(&s->cond, &s->mutex, &tv); | |
| 1013 | ✗ | if (err) { | |
| 1014 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 1015 | ✗ | return AVERROR(err == ETIMEDOUT ? EAGAIN : err); | |
| 1016 | } | ||
| 1017 | ✗ | nonblock = 1; | |
| 1018 | } | ||
| 1019 | } while(1); | ||
| 1020 | } | ||
| 1021 | #endif | ||
| 1022 | |||
| 1023 | ✗ | if (!(h->flags & AVIO_FLAG_NONBLOCK)) { | |
| 1024 | ✗ | ret = ff_network_wait_fd(s->udp_fd, 0); | |
| 1025 | ✗ | if (ret < 0) | |
| 1026 | ✗ | return ret; | |
| 1027 | } | ||
| 1028 | ✗ | s->last_recv_addr_len = sizeof(s->last_recv_addr); | |
| 1029 | ✗ | ret = recvfrom(s->udp_fd, buf, size, 0, (struct sockaddr *)&s->last_recv_addr, &s->last_recv_addr_len); | |
| 1030 | ✗ | if (ret < 0) | |
| 1031 | ✗ | return ff_neterrno(); | |
| 1032 | ✗ | if (ff_ip_check_source_lists(&s->last_recv_addr, &s->filters)) | |
| 1033 | ✗ | return AVERROR(EINTR); | |
| 1034 | ✗ | return ret; | |
| 1035 | } | ||
| 1036 | |||
| 1037 | ✗ | static int udp_write(URLContext *h, const uint8_t *buf, int size) | |
| 1038 | { | ||
| 1039 | ✗ | UDPContext *s = h->priv_data; | |
| 1040 | int ret; | ||
| 1041 | |||
| 1042 | #if HAVE_PTHREAD_CANCEL | ||
| 1043 | ✗ | if (s->tx_fifo) { | |
| 1044 | uint8_t tmp[4]; | ||
| 1045 | |||
| 1046 | ✗ | pthread_mutex_lock(&s->mutex); | |
| 1047 | |||
| 1048 | /* | ||
| 1049 | Return error if last tx failed. | ||
| 1050 | Here we can't know on which packet error was, but it needs to know that error exists. | ||
| 1051 | */ | ||
| 1052 | ✗ | if (s->circular_buffer_error<0) { | |
| 1053 | ✗ | int err = s->circular_buffer_error; | |
| 1054 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 1055 | ✗ | return err; | |
| 1056 | } | ||
| 1057 | |||
| 1058 | ✗ | if (av_fifo_can_write(s->tx_fifo) < size + 4) { | |
| 1059 | /* What about a partial packet tx ? */ | ||
| 1060 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 1061 | ✗ | return AVERROR(ENOMEM); | |
| 1062 | } | ||
| 1063 | ✗ | AV_WL32(tmp, size); | |
| 1064 | ✗ | av_fifo_write(s->tx_fifo, tmp, 4); /* size of packet */ | |
| 1065 | ✗ | av_fifo_write(s->tx_fifo, buf, size); /* the data */ | |
| 1066 | ✗ | pthread_cond_signal(&s->cond); | |
| 1067 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 1068 | ✗ | return size; | |
| 1069 | } | ||
| 1070 | #endif | ||
| 1071 | ✗ | if (!(h->flags & AVIO_FLAG_NONBLOCK)) { | |
| 1072 | ✗ | ret = ff_network_wait_fd(s->udp_fd, 1); | |
| 1073 | ✗ | if (ret < 0) | |
| 1074 | ✗ | return ret; | |
| 1075 | } | ||
| 1076 | |||
| 1077 | ✗ | if (!s->is_connected) { | |
| 1078 | ✗ | ret = sendto (s->udp_fd, buf, size, 0, | |
| 1079 | ✗ | (struct sockaddr *) &s->dest_addr, | |
| 1080 | ✗ | s->dest_addr_len); | |
| 1081 | } else | ||
| 1082 | ✗ | ret = send(s->udp_fd, buf, size, 0); | |
| 1083 | |||
| 1084 | ✗ | return ret < 0 ? ff_neterrno() : ret; | |
| 1085 | } | ||
| 1086 | |||
| 1087 | ✗ | static int udp_close(URLContext *h) | |
| 1088 | { | ||
| 1089 | ✗ | UDPContext *s = h->priv_data; | |
| 1090 | |||
| 1091 | #if HAVE_PTHREAD_CANCEL | ||
| 1092 | // Request close once writing is finished | ||
| 1093 | ✗ | if (s->thread_started && !(h->flags & AVIO_FLAG_READ)) { | |
| 1094 | ✗ | pthread_mutex_lock(&s->mutex); | |
| 1095 | ✗ | s->close_req = 1; | |
| 1096 | ✗ | pthread_cond_signal(&s->cond); | |
| 1097 | ✗ | pthread_mutex_unlock(&s->mutex); | |
| 1098 | } | ||
| 1099 | #endif | ||
| 1100 | |||
| 1101 | ✗ | if (s->is_multicast && (h->flags & AVIO_FLAG_READ)) | |
| 1102 | ✗ | udp_leave_multicast_group(s->udp_fd, (struct sockaddr *)&s->dest_addr, | |
| 1103 | ✗ | (struct sockaddr *)&s->local_addr_storage, h); | |
| 1104 | #if HAVE_PTHREAD_CANCEL | ||
| 1105 | ✗ | if (s->thread_started) { | |
| 1106 | int ret; | ||
| 1107 | // Cancel only read, as write has been signaled as success to the user | ||
| 1108 | ✗ | if (h->flags & AVIO_FLAG_READ) { | |
| 1109 | #ifdef _WIN32 | ||
| 1110 | /* recvfrom() is not a cancellation point for win32, so we shutdown | ||
| 1111 | * the socket and abort pending IO, subsequent recvfrom() calls | ||
| 1112 | * will fail with WSAESHUTDOWN causing the thread to exit. */ | ||
| 1113 | shutdown(s->udp_fd, SD_RECEIVE); | ||
| 1114 | CancelIoEx((HANDLE)(SOCKET)s->udp_fd, NULL); | ||
| 1115 | #else | ||
| 1116 | ✗ | pthread_cancel(s->circular_buffer_thread); | |
| 1117 | #endif | ||
| 1118 | } | ||
| 1119 | ✗ | ret = pthread_join(s->circular_buffer_thread, NULL); | |
| 1120 | ✗ | if (ret != 0) | |
| 1121 | ✗ | av_log(h, AV_LOG_ERROR, "pthread_join(): %s\n", strerror(ret)); | |
| 1122 | ✗ | pthread_mutex_destroy(&s->mutex); | |
| 1123 | ✗ | pthread_cond_destroy(&s->cond); | |
| 1124 | } | ||
| 1125 | #endif | ||
| 1126 | ✗ | closesocket(s->udp_fd); | |
| 1127 | ✗ | av_fifo_freep2(&s->rx_fifo); | |
| 1128 | ✗ | av_fifo_freep2(&s->tx_fifo); | |
| 1129 | ✗ | ff_ip_reset_filters(&s->filters); | |
| 1130 | ✗ | return 0; | |
| 1131 | } | ||
| 1132 | |||
| 1133 | const URLProtocol ff_udp_protocol = { | ||
| 1134 | .name = "udp", | ||
| 1135 | .url_open = udp_open, | ||
| 1136 | .url_read = udp_read, | ||
| 1137 | .url_write = udp_write, | ||
| 1138 | .url_close = udp_close, | ||
| 1139 | .url_get_file_handle = udp_get_file_handle, | ||
| 1140 | .priv_data_size = sizeof(UDPContext), | ||
| 1141 | .priv_data_class = &udp_class, | ||
| 1142 | .flags = URL_PROTOCOL_FLAG_NETWORK, | ||
| 1143 | }; | ||
| 1144 | |||
| 1145 | const URLProtocol ff_udplite_protocol = { | ||
| 1146 | .name = "udplite", | ||
| 1147 | .url_open = udplite_open, | ||
| 1148 | .url_read = udp_read, | ||
| 1149 | .url_write = udp_write, | ||
| 1150 | .url_close = udp_close, | ||
| 1151 | .url_get_file_handle = udp_get_file_handle, | ||
| 1152 | .priv_data_size = sizeof(UDPContext), | ||
| 1153 | .priv_data_class = &udplite_context_class, | ||
| 1154 | .flags = URL_PROTOCOL_FLAG_NETWORK, | ||
| 1155 | }; | ||
| 1156 |