3 * Copyright (c) 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
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.
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
22 #include "libavutil/parseutils.h"
26 #include "os_support.h"
33 typedef struct TCPContext {
37 /* return non zero if error */
38 static int tcp_open(URLContext *h, const char *uri, int flags)
40 struct addrinfo hints = { 0 }, *ai, *cur_ai;
42 TCPContext *s = h->priv_data;
43 int listen_socket = 0;
49 char hostname[1024],proto[1024],path[1024];
52 av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
53 &port, path, sizeof(path), uri);
54 if (strcmp(proto,"tcp") || port <= 0 || port >= 65536)
55 return AVERROR(EINVAL);
59 if (av_find_info_tag(buf, sizeof(buf), "listen", p))
61 if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) {
62 timeout = strtol(buf, NULL, 10);
65 hints.ai_family = AF_UNSPEC;
66 hints.ai_socktype = SOCK_STREAM;
67 snprintf(portstr, sizeof(portstr), "%d", port);
68 ret = getaddrinfo(hostname, portstr, &hints, &ai);
70 av_log(h, AV_LOG_ERROR,
71 "Failed to resolve hostname %s: %s\n",
72 hostname, gai_strerror(ret));
80 fd = socket(cur_ai->ai_family, cur_ai->ai_socktype, cur_ai->ai_protocol);
87 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse));
88 ret = bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
94 fd1 = accept(fd, NULL, NULL);
101 ff_socket_nonblock(fd, 1);
104 ff_socket_nonblock(fd, 1);
105 ret = connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
109 struct pollfd p = {fd, POLLOUT, 0};
111 if (ret == AVERROR(EINTR)) {
112 if (ff_check_interrupt(&h->interrupt_callback)) {
118 if (ret != AVERROR(EINPROGRESS) &&
119 ret != AVERROR(EAGAIN))
122 /* wait until we are connected or until abort */
124 if (ff_check_interrupt(&h->interrupt_callback)) {
128 ret = poll(&p, 1, 100);
133 ret = AVERROR(ETIMEDOUT);
137 optlen = sizeof(ret);
138 getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
140 av_log(h, AV_LOG_ERROR,
141 "TCP connection to %s:%d failed: %s\n",
142 hostname, port, strerror(ret));
153 if (cur_ai->ai_next) {
154 /* Retry with the next sockaddr */
155 cur_ai = cur_ai->ai_next;
167 static int tcp_read(URLContext *h, uint8_t *buf, int size)
169 TCPContext *s = h->priv_data;
172 if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
173 ret = ff_network_wait_fd(s->fd, 0);
177 ret = recv(s->fd, buf, size, 0);
178 return ret < 0 ? ff_neterrno() : ret;
181 static int tcp_write(URLContext *h, const uint8_t *buf, int size)
183 TCPContext *s = h->priv_data;
186 if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
187 ret = ff_network_wait_fd(s->fd, 1);
191 ret = send(s->fd, buf, size, 0);
192 return ret < 0 ? ff_neterrno() : ret;
195 static int tcp_shutdown(URLContext *h, int flags)
197 TCPContext *s = h->priv_data;
200 if (flags & AVIO_FLAG_WRITE && flags & AVIO_FLAG_READ) {
202 } else if (flags & AVIO_FLAG_WRITE) {
208 return shutdown(s->fd, how);
211 static int tcp_close(URLContext *h)
213 TCPContext *s = h->priv_data;
218 static int tcp_get_file_handle(URLContext *h)
220 TCPContext *s = h->priv_data;
224 URLProtocol ff_tcp_protocol = {
226 .url_open = tcp_open,
227 .url_read = tcp_read,
228 .url_write = tcp_write,
229 .url_close = tcp_close,
230 .url_get_file_handle = tcp_get_file_handle,
231 .url_shutdown = tcp_shutdown,
232 .priv_data_size = sizeof(TCPContext),
233 .flags = URL_PROTOCOL_FLAG_NETWORK,