171bbb03 |
/*
* TCP protocol |
406792e7 |
* Copyright (c) 2002 Fabrice Bellard |
171bbb03 |
* |
b78e7197 |
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or |
171bbb03 |
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either |
b78e7197 |
* version 2.1 of the License, or (at your option) any later version. |
171bbb03 |
* |
b78e7197 |
* FFmpeg is distributed in the hope that it will be useful, |
171bbb03 |
* 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 |
b78e7197 |
* License along with FFmpeg; if not, write to the Free Software |
5509bffa |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
171bbb03 |
*/
#include "avformat.h" |
3d42d493 |
#include "libavutil/parseutils.h" |
2e009c60 |
#include "libavutil/opt.h" |
9cf788ec |
#include "libavutil/time.h" |
e4a9e3cc |
#include "internal.h" |
42572ef5 |
#include "network.h" |
087b3272 |
#include "os_support.h" |
5cec8971 |
#include "url.h" |
a8475bbd |
#if HAVE_POLL_H
#include <poll.h> |
6ad1c9c9 |
#endif |
171bbb03 |
typedef struct TCPContext { |
2e009c60 |
const AVClass *class; |
171bbb03 |
int fd; |
2e009c60 |
int listen; |
68b7b534 |
int open_timeout; |
2e009c60 |
int rw_timeout;
int listen_timeout; |
171bbb03 |
} TCPContext;
|
2e009c60 |
#define OFFSET(x) offsetof(TCPContext, x)
#define D AV_OPT_FLAG_DECODING_PARAM
#define E AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{"listen", "listen on port instead of connecting", OFFSET(listen), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D|E }, |
1b4da43c |
{"timeout", "set timeout of socket I/O operations", OFFSET(rw_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, D|E },
{"listen_timeout", "set connection awaiting timeout", OFFSET(listen_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, D|E }, |
2e009c60 |
{NULL}
};
static const AVClass tcp_context_class = {
.class_name = "tcp",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
|
171bbb03 |
/* return non zero if error */
static int tcp_open(URLContext *h, const char *uri, int flags)
{ |
a92be9b8 |
struct addrinfo hints = { 0 }, *ai, *cur_ai; |
171bbb03 |
int port, fd = -1; |
7e580505 |
TCPContext *s = h->priv_data; |
3d42d493 |
const char *p;
char buf[256]; |
a8475bbd |
int ret; |
f23a9759 |
char hostname[1024],proto[1024],path[1024]; |
fdcdd539 |
char portstr[10]; |
68b7b534 |
s->open_timeout = 5000000; |
6ba5cbc6 |
|
f3bfe388 |
av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), |
a3303add |
&port, path, sizeof(path), uri); |
f9a9a148 |
if (strcmp(proto, "tcp")) |
8b9af28d |
return AVERROR(EINVAL); |
f9a9a148 |
if (port <= 0 || port >= 65536) {
av_log(h, AV_LOG_ERROR, "Port missing in uri\n");
return AVERROR(EINVAL);
} |
3d42d493 |
p = strchr(uri, '?');
if (p) { |
702d9a23 |
if (av_find_info_tag(buf, sizeof(buf), "listen", p)) {
char *endptr = NULL;
s->listen = strtol(buf, &endptr, 10);
/* assume if no digits were found it is a request to enable it */
if (buf == endptr)
s->listen = 1;
} |
ebb6b27a |
if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) { |
2e009c60 |
s->rw_timeout = strtol(buf, NULL, 10); |
ebb6b27a |
} |
5427df01 |
if (av_find_info_tag(buf, sizeof(buf), "listen_timeout", p)) { |
2e009c60 |
s->listen_timeout = strtol(buf, NULL, 10); |
5427df01 |
} |
3d42d493 |
} |
68b7b534 |
if (s->rw_timeout >= 0) {
s->open_timeout =
h->rw_timeout = s->rw_timeout;
} |
88248b76 |
hints.ai_family = AF_UNSPEC; |
fdcdd539 |
hints.ai_socktype = SOCK_STREAM;
snprintf(portstr, sizeof(portstr), "%d", port); |
2e009c60 |
if (s->listen) |
58f3e09e |
hints.ai_flags |= AI_PASSIVE; |
ef882e46 |
if (!hostname[0])
ret = getaddrinfo(NULL, portstr, &hints, &ai);
else
ret = getaddrinfo(hostname, portstr, &hints, &ai); |
63638a3c |
if (ret) { |
c60112f2 |
av_log(h, AV_LOG_ERROR, |
63638a3c |
"Failed to resolve hostname %s: %s\n",
hostname, gai_strerror(ret)); |
8b9af28d |
return AVERROR(EIO); |
63638a3c |
} |
171bbb03 |
|
fdcdd539 |
cur_ai = ai;
restart: |
bb937825 |
fd = ff_socket(cur_ai->ai_family,
cur_ai->ai_socktype,
cur_ai->ai_protocol); |
28306e6d |
if (fd < 0) {
ret = ff_neterrno(); |
fdcdd539 |
goto fail; |
28306e6d |
} |
115329f1 |
|
2e009c60 |
if (s->listen) { |
28306e6d |
if ((fd = ff_listen_bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen, |
82070b01 |
s->listen_timeout, h)) < 0) { |
28306e6d |
ret = fd; |
2dbb8cc6 |
goto fail1;
} |
3d42d493 |
} else { |
f849a77e |
if ((ret = ff_listen_connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen, |
22fbc7f8 |
s->open_timeout / 1000, h, !!cur_ai->ai_next)) < 0) { |
3d42d493 |
|
f849a77e |
if (ret == AVERROR_EXIT) |
1aa58c64 |
goto fail1; |
f849a77e |
else
goto fail; |
63638a3c |
} |
09787fb8 |
} |
f849a77e |
|
47f944a2 |
h->is_streamed = 1; |
171bbb03 |
s->fd = fd; |
fdcdd539 |
freeaddrinfo(ai); |
171bbb03 |
return 0;
fail: |
fdcdd539 |
if (cur_ai->ai_next) {
/* Retry with the next sockaddr */
cur_ai = cur_ai->ai_next;
if (fd >= 0)
closesocket(fd); |
28306e6d |
ret = 0; |
fdcdd539 |
goto restart;
} |
09787fb8 |
fail1: |
171bbb03 |
if (fd >= 0) |
e9d511dc |
closesocket(fd); |
fdcdd539 |
freeaddrinfo(ai); |
09787fb8 |
return ret; |
171bbb03 |
}
|
0c1a9eda |
static int tcp_read(URLContext *h, uint8_t *buf, int size) |
171bbb03 |
{
TCPContext *s = h->priv_data; |
ad3cffb6 |
int ret; |
171bbb03 |
|
f87b1b37 |
if (!(h->flags & AVIO_FLAG_NONBLOCK)) { |
949acefc |
ret = ff_network_wait_fd_timeout(s->fd, 0, h->rw_timeout, &h->interrupt_callback);
if (ret) |
51b317d2 |
return ret; |
171bbb03 |
} |
ad3cffb6 |
ret = recv(s->fd, buf, size, 0);
return ret < 0 ? ff_neterrno() : ret; |
171bbb03 |
}
|
27241cbf |
static int tcp_write(URLContext *h, const uint8_t *buf, int size) |
171bbb03 |
{
TCPContext *s = h->priv_data; |
ad3cffb6 |
int ret; |
171bbb03 |
|
f87b1b37 |
if (!(h->flags & AVIO_FLAG_NONBLOCK)) { |
949acefc |
ret = ff_network_wait_fd_timeout(s->fd, 1, h->rw_timeout, &h->interrupt_callback);
if (ret) |
51b317d2 |
return ret; |
171bbb03 |
} |
ad3cffb6 |
ret = send(s->fd, buf, size, 0);
return ret < 0 ? ff_neterrno() : ret; |
171bbb03 |
}
|
4a9ca935 |
static int tcp_shutdown(URLContext *h, int flags)
{
TCPContext *s = h->priv_data;
int how;
if (flags & AVIO_FLAG_WRITE && flags & AVIO_FLAG_READ) {
how = SHUT_RDWR;
} else if (flags & AVIO_FLAG_WRITE) {
how = SHUT_WR;
} else {
how = SHUT_RD;
}
return shutdown(s->fd, how);
}
|
171bbb03 |
static int tcp_close(URLContext *h)
{
TCPContext *s = h->priv_data; |
9ddd71fc |
closesocket(s->fd); |
171bbb03 |
return 0;
}
|
f0a80394 |
static int tcp_get_file_handle(URLContext *h)
{
TCPContext *s = h->priv_data;
return s->fd;
}
|
c6610a21 |
URLProtocol ff_tcp_protocol = { |
f35ff97f |
.name = "tcp",
.url_open = tcp_open,
.url_read = tcp_read,
.url_write = tcp_write,
.url_close = tcp_close, |
f0a80394 |
.url_get_file_handle = tcp_get_file_handle, |
4a9ca935 |
.url_shutdown = tcp_shutdown, |
7e580505 |
.priv_data_size = sizeof(TCPContext), |
2e009c60 |
.priv_data_class = &tcp_context_class, |
32b83aee |
.flags = URL_PROTOCOL_FLAG_NETWORK, |
171bbb03 |
}; |