#include <netinet/in.h>
#include <netinet/sctp.h>
-#include <sys/time.h>
-#include <unistd.h>
#include "config.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/parseutils.h"
+#include "libavutil/opt.h"
#include "avformat.h"
#include "internal.h"
#include "network.h"
/*
* The sctp_recvmsg and sctp_sendmsg functions are part of the user
- * library that offers support
- * for the SCTP kernel Implementation. The main purpose of this
- * code is to provide the SCTP Socket API mappings for user
- * application to interface with the SCTP in kernel.
+ * library that offers support for the SCTP kernel Implementation.
+ * To avoid build-time clashes the functions sport an ff_-prefix here.
+ * The main purpose of this code is to provide the SCTP Socket API
+ * mappings for user applications to interface with SCTP in the kernel.
*
* This implementation is based on the Socket API Extensions for SCTP
* defined in <draft-ietf-tsvwg-sctpsocket-10.txt>
static int ff_sctp_send(int s, const void *msg, size_t len,
const struct sctp_sndrcvinfo *sinfo, int flags)
{
- struct msghdr outmsg;
+ struct msghdr outmsg = { 0 };
struct iovec iov;
outmsg.msg_name = NULL;
memcpy(CMSG_DATA(cmsg), sinfo, sizeof(struct sctp_sndrcvinfo));
}
- return sendmsg(s, &outmsg, flags);
+ return sendmsg(s, &outmsg, flags | MSG_NOSIGNAL);
}
typedef struct SCTPContext {
+ const AVClass *class;
int fd;
+ int listen;
+ int timeout;
+ int listen_timeout;
int max_streams;
struct sockaddr_storage dest_addr;
- socklen_t dest_addr_len;
} SCTPContext;
+#define OFFSET(x) offsetof(SCTPContext, x)
+#define D AV_OPT_FLAG_DECODING_PARAM
+#define E AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+ { "listen", "Listen for incoming connections", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = D|E },
+ { "timeout", "Connection timeout (in milliseconds)", OFFSET(timeout), AV_OPT_TYPE_INT, { .i64 = 10000 }, INT_MIN, INT_MAX, .flags = D|E },
+ { "listen_timeout", "Bind timeout (in milliseconds)", OFFSET(listen_timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, INT_MIN, INT_MAX, .flags = D|E },
+ { "max_streams", "Max stream to allocate", OFFSET(max_streams), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT16_MAX, .flags = D|E },
+ { NULL }
+};
+
+static const AVClass sctp_class = {
+ .class_name = "sctp",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
static int sctp_open(URLContext *h, const char *uri, int flags)
{
struct addrinfo *ai, *cur_ai;
SCTPContext *s = h->priv_data;
const char *p;
char buf[256];
- int ret, listen_socket = 0;
+ int ret;
char hostname[1024], proto[1024], path[1024];
char portstr[10];
av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
&port, path, sizeof(path), uri);
- if (strcmp(proto,"sctp") || port <= 0 || port >= 65536)
+ if (strcmp(proto, "sctp"))
+ return AVERROR(EINVAL);
+ if (port <= 0 || port >= 65536) {
+ av_log(s, AV_LOG_ERROR, "Port missing in uri\n");
return AVERROR(EINVAL);
+ }
- s->max_streams = 0;
p = strchr(uri, '?');
if (p) {
if (av_find_info_tag(buf, sizeof(buf), "listen", p))
- listen_socket = 1;
+ s->listen = 1;
if (av_find_info_tag(buf, sizeof(buf), "max_streams", p))
s->max_streams = strtol(buf, NULL, 10);
}
cur_ai = ai;
- fd = socket(cur_ai->ai_family, SOCK_STREAM, IPPROTO_SCTP);
- if (fd < 0)
+restart:
+ fd = ff_socket(cur_ai->ai_family, SOCK_STREAM, IPPROTO_SCTP);
+ if (fd < 0) {
+ ret = ff_neterrno();
goto fail;
+ }
- s->dest_addr_len = sizeof(s->dest_addr);
-
- if (listen_socket) {
- int fd1;
- ret = bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
- listen(fd, 100);
- fd1 = accept(fd, NULL, NULL);
- closesocket(fd);
- fd = fd1;
- } else
- ret = connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
-
- ff_socket_nonblock(fd, 1);
+ if (s->listen) {
+ if ((fd = ff_listen_bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen,
+ s->listen_timeout, h)) < 0) {
+ ret = fd;
+ goto fail1;
+ }
+ } else {
+ if ((ret = ff_listen_connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen,
+ s->timeout, h, !!cur_ai->ai_next)) < 0) {
+
+ if (ret == AVERROR_EXIT)
+ goto fail1;
+ else
+ goto fail;
+ }
+ }
event.sctp_data_io_event = 1;
/* TODO: Subscribe to more event types and handle them */
sizeof(event)) != 0) {
av_log(h, AV_LOG_ERROR,
"SCTP ERROR: Unable to subscribe to events\n");
- goto fail;
+ goto fail1;
}
if (s->max_streams) {
initparams.sinit_max_instreams = s->max_streams;
initparams.sinit_num_ostreams = s->max_streams;
if (setsockopt(fd, IPPROTO_SCTP, SCTP_INITMSG, &initparams,
- sizeof(initparams)) < 0)
+ sizeof(initparams)) < 0) {
av_log(h, AV_LOG_ERROR,
"SCTP ERROR: Unable to initialize socket max streams %d\n",
s->max_streams);
+ ret = ff_neterrno();
+ goto fail1;
+ }
}
h->priv_data = s;
return 0;
fail:
+ if (cur_ai->ai_next) {
+ /* Retry with the next sockaddr */
+ cur_ai = cur_ai->ai_next;
+ if (fd >= 0)
+ closesocket(fd);
+ ret = 0;
+ goto restart;
+ }
+fail1:
ret = AVERROR(EIO);
freeaddrinfo(ai);
return ret;
struct sctp_sndrcvinfo info = { 0 };
info.sinfo_stream = AV_RB16(buf);
if (info.sinfo_stream > s->max_streams)
- abort();
+ return AVERROR_BUG;
ret = ff_sctp_send(s->fd, buf + 2, size - 2, &info, MSG_EOR);
} else
- ret = send(s->fd, buf, size, 0);
+ ret = send(s->fd, buf, size, MSG_NOSIGNAL);
return ret < 0 ? ff_neterrno() : ret;
}
.url_get_file_handle = sctp_get_file_handle,
.priv_data_size = sizeof(SCTPContext),
.flags = URL_PROTOCOL_FLAG_NETWORK,
+ .priv_data_class = &sctp_class,
};
projects / ffmpeg / blobdiff