* TCP protocol
* Copyright (c) 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
*/
#include "avformat.h"
+#include "libavutil/parseutils.h"
#include <unistd.h>
+#include "internal.h"
#include "network.h"
#include "os_support.h"
-#if HAVE_SYS_SELECT_H
-#include <sys/select.h>
+#include "url.h"
+#if HAVE_POLL_H
+#include <poll.h>
#endif
#include <sys/time.h>
/* return non zero if error */
static int tcp_open(URLContext *h, const char *uri, int flags)
{
- struct sockaddr_in dest_addr;
+ struct addrinfo hints, *ai, *cur_ai;
int port, fd = -1;
- TCPContext *s = NULL;
- fd_set wfds;
- int fd_max, ret;
- struct timeval tv;
+ TCPContext *s = h->priv_data;
+ int listen_socket = 0;
+ const char *p;
+ char buf[256];
+ int ret;
socklen_t optlen;
+ int timeout = 100;
char hostname[1024],proto[1024],path[1024];
+ char portstr[10];
- if(!ff_network_init())
- return AVERROR(EIO);
-
- url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
+ av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
&port, path, sizeof(path), uri);
if (strcmp(proto,"tcp") || port <= 0 || port >= 65536)
return AVERROR(EINVAL);
- dest_addr.sin_family = AF_INET;
- dest_addr.sin_port = htons(port);
- if (resolve_host(&dest_addr.sin_addr, hostname) < 0)
+ p = strchr(uri, '?');
+ if (p) {
+ if (av_find_info_tag(buf, sizeof(buf), "listen", p))
+ listen_socket = 1;
+ if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) {
+ timeout = strtol(buf, NULL, 10);
+ }
+ }
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ snprintf(portstr, sizeof(portstr), "%d", port);
+ ret = getaddrinfo(hostname, portstr, &hints, &ai);
+ if (ret) {
+ av_log(h, AV_LOG_ERROR,
+ "Failed to resolve hostname %s: %s\n",
+ hostname, gai_strerror(ret));
return AVERROR(EIO);
+ }
+
+ cur_ai = ai;
- fd = socket(AF_INET, SOCK_STREAM, 0);
+ restart:
+ ret = AVERROR(EIO);
+ fd = socket(cur_ai->ai_family, cur_ai->ai_socktype, cur_ai->ai_protocol);
if (fd < 0)
- return AVERROR(EIO);
- ff_socket_nonblock(fd, 1);
+ goto fail;
+ if (listen_socket) {
+ int fd1;
+ ret = bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
+ listen(fd, 1);
+ fd1 = accept(fd, NULL, NULL);
+ closesocket(fd);
+ fd = fd1;
+ ff_socket_nonblock(fd, 1);
+ } else {
redo:
- ret = connect(fd, (struct sockaddr *)&dest_addr,
- sizeof(dest_addr));
+ ff_socket_nonblock(fd, 1);
+ ret = connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
+ }
+
if (ret < 0) {
- if (ff_neterrno() == FF_NETERROR(EINTR))
+ struct pollfd p = {fd, POLLOUT, 0};
+ ret = ff_neterrno();
+ if (ret == AVERROR(EINTR)) {
+ if (ff_check_interrupt(&h->interrupt_callback)) {
+ ret = AVERROR_EXIT;
+ goto fail1;
+ }
goto redo;
- if (ff_neterrno() != FF_NETERROR(EINPROGRESS) &&
- ff_neterrno() != FF_NETERROR(EAGAIN))
+ }
+ if (ret != AVERROR(EINPROGRESS) &&
+ ret != AVERROR(EAGAIN))
goto fail;
/* wait until we are connected or until abort */
- for(;;) {
- if (url_interrupt_cb()) {
- ret = AVERROR(EINTR);
+ while(timeout--) {
+ if (ff_check_interrupt(&h->interrupt_callback)) {
+ ret = AVERROR_EXIT;
goto fail1;
}
- fd_max = fd;
- FD_ZERO(&wfds);
- FD_SET(fd, &wfds);
- tv.tv_sec = 0;
- tv.tv_usec = 100 * 1000;
- ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
- if (ret > 0 && FD_ISSET(fd, &wfds))
+ ret = poll(&p, 1, 100);
+ if (ret > 0)
break;
}
-
+ if (ret <= 0) {
+ ret = AVERROR(ETIMEDOUT);
+ goto fail;
+ }
/* test error */
optlen = sizeof(ret);
getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
- if (ret != 0)
+ if (ret != 0) {
+ av_log(h, AV_LOG_ERROR,
+ "TCP connection to %s:%d failed: %s\n",
+ hostname, port, strerror(ret));
+ ret = AVERROR(ret);
goto fail;
+ }
}
- s = av_malloc(sizeof(TCPContext));
- if (!s)
- return AVERROR(ENOMEM);
- h->priv_data = s;
h->is_streamed = 1;
s->fd = fd;
+ freeaddrinfo(ai);
return 0;
fail:
- ret = AVERROR(EIO);
+ if (cur_ai->ai_next) {
+ /* Retry with the next sockaddr */
+ cur_ai = cur_ai->ai_next;
+ if (fd >= 0)
+ closesocket(fd);
+ goto restart;
+ }
fail1:
if (fd >= 0)
closesocket(fd);
+ freeaddrinfo(ai);
return ret;
}
static int tcp_read(URLContext *h, uint8_t *buf, int size)
{
TCPContext *s = h->priv_data;
- int len, fd_max, ret;
- fd_set rfds;
- struct timeval tv;
-
- for (;;) {
- if (url_interrupt_cb())
- return AVERROR(EINTR);
- fd_max = s->fd;
- FD_ZERO(&rfds);
- FD_SET(s->fd, &rfds);
- tv.tv_sec = 0;
- tv.tv_usec = 100 * 1000;
- ret = select(fd_max + 1, &rfds, NULL, NULL, &tv);
- if (ret > 0 && FD_ISSET(s->fd, &rfds)) {
- len = recv(s->fd, buf, size, 0);
- if (len < 0) {
- if (ff_neterrno() != FF_NETERROR(EINTR) &&
- ff_neterrno() != FF_NETERROR(EAGAIN))
- return AVERROR(ff_neterrno());
- } else return len;
- } else if (ret < 0) {
- return -1;
- }
+ int ret;
+
+ if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
+ ret = ff_network_wait_fd(s->fd, 0);
+ if (ret < 0)
+ return ret;
}
+ ret = recv(s->fd, buf, size, 0);
+ return ret < 0 ? ff_neterrno() : ret;
}
-static int tcp_write(URLContext *h, uint8_t *buf, int size)
+static int tcp_write(URLContext *h, const uint8_t *buf, int size)
{
TCPContext *s = h->priv_data;
- int ret, size1, fd_max, len;
- fd_set wfds;
- struct timeval tv;
-
- size1 = size;
- while (size > 0) {
- if (url_interrupt_cb())
- return AVERROR(EINTR);
- fd_max = s->fd;
- FD_ZERO(&wfds);
- FD_SET(s->fd, &wfds);
- tv.tv_sec = 0;
- tv.tv_usec = 100 * 1000;
- ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
- if (ret > 0 && FD_ISSET(s->fd, &wfds)) {
- len = send(s->fd, buf, size, 0);
- if (len < 0) {
- if (ff_neterrno() != FF_NETERROR(EINTR) &&
- ff_neterrno() != FF_NETERROR(EAGAIN))
- return AVERROR(ff_neterrno());
- continue;
- }
- size -= len;
- buf += len;
- } else if (ret < 0) {
- return -1;
- }
+ int ret;
+
+ if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
+ ret = ff_network_wait_fd(s->fd, 1);
+ if (ret < 0)
+ return ret;
}
- return size1 - size;
+ ret = send(s->fd, buf, size, 0);
+ return ret < 0 ? ff_neterrno() : ret;
}
static int tcp_close(URLContext *h)
{
TCPContext *s = h->priv_data;
closesocket(s->fd);
- ff_network_close();
- av_free(s);
return 0;
}
return s->fd;
}
-URLProtocol tcp_protocol = {
- "tcp",
- tcp_open,
- tcp_read,
- tcp_write,
- NULL, /* seek */
- tcp_close,
+URLProtocol ff_tcp_protocol = {
+ .name = "tcp",
+ .url_open = tcp_open,
+ .url_read = tcp_read,
+ .url_write = tcp_write,
+ .url_close = tcp_close,
.url_get_file_handle = tcp_get_file_handle,
+ .priv_data_size = sizeof(TCPContext),
+ .flags = URL_PROTOCOL_FLAG_NETWORK,
};
projects / ffmpeg / blobdiff