2002-07-04 10:35:45 +00:00
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/*
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* TCP protocol
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2009-01-19 15:46:40 +00:00
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* Copyright (c) 2002 Fabrice Bellard
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2002-07-04 10:35:45 +00:00
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*
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2006-10-07 15:30:46 +00:00
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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2002-07-04 10:35:45 +00:00
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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2006-10-07 15:30:46 +00:00
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* version 2.1 of the License, or (at your option) any later version.
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2002-07-04 10:35:45 +00:00
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*
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2006-10-07 15:30:46 +00:00
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* FFmpeg is distributed in the hope that it will be useful,
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2002-07-04 10:35:45 +00:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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2006-10-07 15:30:46 +00:00
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* License along with FFmpeg; if not, write to the Free Software
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2006-01-12 22:43:26 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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2002-07-04 10:35:45 +00:00
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*/
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#include "avformat.h"
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#include <unistd.h>
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2010-03-14 23:59:48 +00:00
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#include "internal.h"
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2007-02-04 17:05:44 +00:00
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#include "network.h"
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2007-11-21 16:33:06 +00:00
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#include "os_support.h"
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2011-01-28 02:12:21 +00:00
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#if HAVE_POLL_H
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#include <poll.h>
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2008-09-26 02:12:37 +00:00
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#endif
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2003-07-17 10:28:27 +00:00
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#include <sys/time.h>
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2002-07-04 10:35:45 +00:00
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typedef struct TCPContext {
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int fd;
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} TCPContext;
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/* return non zero if error */
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static int tcp_open(URLContext *h, const char *uri, int flags)
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{
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2010-01-11 17:32:40 +00:00
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struct addrinfo hints, *ai, *cur_ai;
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2002-07-04 10:35:45 +00:00
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int port, fd = -1;
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2005-02-24 19:08:50 +00:00
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TCPContext *s = NULL;
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2011-01-28 02:12:21 +00:00
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int ret;
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2003-07-17 10:28:27 +00:00
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socklen_t optlen;
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2008-08-24 16:22:40 +00:00
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char hostname[1024],proto[1024],path[1024];
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2010-01-11 17:32:40 +00:00
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char portstr[10];
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2004-08-12 00:09:32 +00:00
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2010-06-27 14:16:46 +00:00
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av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
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2008-08-23 18:52:26 +00:00
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&port, path, sizeof(path), uri);
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if (strcmp(proto,"tcp") || port <= 0 || port >= 65536)
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2008-08-23 18:49:16 +00:00
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return AVERROR(EINVAL);
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2005-12-17 18:14:38 +00:00
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2010-01-11 17:32:40 +00:00
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memset(&hints, 0, sizeof(hints));
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2010-01-27 22:31:13 +00:00
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hints.ai_family = AF_UNSPEC;
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2010-01-11 17:32:40 +00:00
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hints.ai_socktype = SOCK_STREAM;
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snprintf(portstr, sizeof(portstr), "%d", port);
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2010-08-14 20:34:51 +00:00
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ret = getaddrinfo(hostname, portstr, &hints, &ai);
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if (ret) {
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av_log(NULL, AV_LOG_ERROR,
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"Failed to resolve hostname %s: %s\n",
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hostname, gai_strerror(ret));
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2008-08-23 18:49:16 +00:00
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return AVERROR(EIO);
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2010-08-14 20:34:51 +00:00
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}
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2002-07-04 10:35:45 +00:00
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2010-01-11 17:32:40 +00:00
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cur_ai = ai;
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restart:
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fd = socket(cur_ai->ai_family, cur_ai->ai_socktype, cur_ai->ai_protocol);
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2002-07-04 10:35:45 +00:00
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if (fd < 0)
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2010-01-11 17:32:40 +00:00
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goto fail;
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2007-04-27 00:41:50 +00:00
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ff_socket_nonblock(fd, 1);
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2005-12-17 18:14:38 +00:00
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2003-07-17 10:28:27 +00:00
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redo:
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2010-01-11 17:32:40 +00:00
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ret = connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
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2003-07-17 10:28:27 +00:00
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if (ret < 0) {
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2011-04-01 22:29:07 +00:00
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int timeout=50;
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2011-01-28 02:12:21 +00:00
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struct pollfd p = {fd, POLLOUT, 0};
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2011-02-19 18:14:11 +00:00
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if (ff_neterrno() == AVERROR(EINTR)) {
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2011-03-12 23:42:27 +00:00
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if (url_interrupt_cb()) {
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ret = AVERROR_EXIT;
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2010-12-14 23:03:05 +00:00
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goto fail1;
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2011-03-12 23:42:27 +00:00
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}
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2003-07-17 10:28:27 +00:00
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goto redo;
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2010-12-14 23:03:05 +00:00
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}
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2011-02-19 18:14:11 +00:00
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if (ff_neterrno() != AVERROR(EINPROGRESS) &&
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ff_neterrno() != AVERROR(EAGAIN))
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2003-07-17 10:28:27 +00:00
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goto fail;
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2002-07-04 10:35:45 +00:00
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2003-07-17 10:28:27 +00:00
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/* wait until we are connected or until abort */
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for(;;) {
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if (url_interrupt_cb()) {
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2011-03-12 23:42:27 +00:00
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ret = AVERROR_EXIT;
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2003-07-17 10:28:27 +00:00
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goto fail1;
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}
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2011-01-28 02:12:21 +00:00
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ret = poll(&p, 1, 100);
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if (ret > 0)
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2003-07-17 10:28:27 +00:00
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break;
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2011-04-01 22:29:07 +00:00
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if(!--timeout){
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av_log(NULL, AV_LOG_ERROR,
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"TCP open %s:%d timeout\n",
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hostname, port);
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goto fail;
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}
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2003-07-17 10:28:27 +00:00
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}
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2005-12-17 18:14:38 +00:00
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2003-07-17 10:28:27 +00:00
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/* test error */
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optlen = sizeof(ret);
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getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
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2010-08-14 20:34:51 +00:00
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if (ret != 0) {
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av_log(NULL, AV_LOG_ERROR,
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"TCP connection to %s:%d failed: %s\n",
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hostname, port, strerror(ret));
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2003-07-17 10:28:27 +00:00
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goto fail;
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2010-08-14 20:34:51 +00:00
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}
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2003-07-17 10:28:27 +00:00
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}
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2008-08-23 18:46:30 +00:00
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s = av_malloc(sizeof(TCPContext));
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2010-01-11 17:32:40 +00:00
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if (!s) {
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freeaddrinfo(ai);
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2008-08-23 18:46:30 +00:00
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return AVERROR(ENOMEM);
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2010-01-11 17:32:40 +00:00
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}
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2008-08-23 18:46:30 +00:00
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h->priv_data = s;
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h->is_streamed = 1;
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2002-07-04 10:35:45 +00:00
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s->fd = fd;
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2010-01-11 17:32:40 +00:00
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freeaddrinfo(ai);
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2002-07-04 10:35:45 +00:00
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return 0;
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fail:
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2010-01-11 17:32:40 +00:00
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if (cur_ai->ai_next) {
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/* Retry with the next sockaddr */
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cur_ai = cur_ai->ai_next;
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if (fd >= 0)
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closesocket(fd);
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goto restart;
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}
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2007-07-19 15:23:32 +00:00
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ret = AVERROR(EIO);
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2003-07-17 10:28:27 +00:00
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fail1:
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2002-07-04 10:35:45 +00:00
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if (fd >= 0)
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2007-01-18 17:22:30 +00:00
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closesocket(fd);
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2010-01-11 17:32:40 +00:00
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freeaddrinfo(ai);
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2003-07-17 10:28:27 +00:00
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return ret;
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2002-07-04 10:35:45 +00:00
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}
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2011-02-02 17:45:44 +00:00
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static int tcp_wait_fd(int fd, int write)
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{
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int ev = write ? POLLOUT : POLLIN;
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struct pollfd p = { .fd = fd, .events = ev, .revents = 0 };
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int ret;
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ret = poll(&p, 1, 100);
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2011-02-19 18:14:11 +00:00
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return ret < 0 ? ff_neterrno() : p.revents & ev ? 0 : AVERROR(EAGAIN);
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2011-02-02 17:45:44 +00:00
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}
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2003-02-11 16:35:48 +00:00
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static int tcp_read(URLContext *h, uint8_t *buf, int size)
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2002-07-04 10:35:45 +00:00
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{
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TCPContext *s = h->priv_data;
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2011-02-04 18:12:38 +00:00
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int ret;
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2002-07-04 10:35:45 +00:00
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2011-02-04 18:12:38 +00:00
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if (!(h->flags & URL_FLAG_NONBLOCK)) {
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2011-02-02 17:45:44 +00:00
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ret = tcp_wait_fd(s->fd, 0);
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2011-02-04 18:12:38 +00:00
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if (ret < 0)
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2011-02-02 17:45:44 +00:00
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return ret;
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2002-07-04 10:35:45 +00:00
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}
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2011-02-04 18:12:38 +00:00
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ret = recv(s->fd, buf, size, 0);
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return ret < 0 ? ff_neterrno() : ret;
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2002-07-04 10:35:45 +00:00
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}
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2010-06-01 07:46:23 +00:00
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static int tcp_write(URLContext *h, const uint8_t *buf, int size)
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2002-07-04 10:35:45 +00:00
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{
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TCPContext *s = h->priv_data;
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2011-02-04 18:12:38 +00:00
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int ret;
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2002-07-04 10:35:45 +00:00
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2011-02-04 18:12:38 +00:00
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if (!(h->flags & URL_FLAG_NONBLOCK)) {
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2011-02-02 17:45:44 +00:00
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ret = tcp_wait_fd(s->fd, 1);
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2011-02-04 18:12:38 +00:00
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if (ret < 0)
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2011-02-02 17:45:44 +00:00
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return ret;
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2002-07-04 10:35:45 +00:00
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}
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2011-02-04 18:12:38 +00:00
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ret = send(s->fd, buf, size, 0);
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return ret < 0 ? ff_neterrno() : ret;
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2002-07-04 10:35:45 +00:00
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}
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static int tcp_close(URLContext *h)
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{
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TCPContext *s = h->priv_data;
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2002-11-02 10:35:07 +00:00
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closesocket(s->fd);
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2002-07-04 10:35:45 +00:00
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av_free(s);
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return 0;
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}
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2009-03-03 17:04:51 +00:00
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static int tcp_get_file_handle(URLContext *h)
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{
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TCPContext *s = h->priv_data;
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return s->fd;
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}
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2011-01-25 22:03:28 +00:00
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URLProtocol ff_tcp_protocol = {
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2002-07-04 10:35:45 +00:00
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"tcp",
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tcp_open,
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tcp_read,
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tcp_write,
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NULL, /* seek */
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tcp_close,
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2009-03-03 17:04:51 +00:00
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.url_get_file_handle = tcp_get_file_handle,
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2002-07-04 10:35:45 +00:00
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};
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