3 * Copyright (c) 2002 Fabrice Bellard
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; 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"
25 #include "os_support.h"
31 typedef struct TCPContext {
35 /* return non zero if error */
36 static int tcp_open(URLContext *h, const char *uri, int flags)
38 struct addrinfo hints = { 0 }, *ai, *cur_ai;
40 TCPContext *s = h->priv_data;
41 int listen_socket = 0;
47 char hostname[1024],proto[1024],path[1024];
50 av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
51 &port, path, sizeof(path), uri);
52 if (strcmp(proto,"tcp") || port <= 0 || port >= 65536)
53 return AVERROR(EINVAL);
57 if (av_find_info_tag(buf, sizeof(buf), "listen", p))
59 if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) {
60 timeout = strtol(buf, NULL, 10);
63 hints.ai_family = AF_UNSPEC;
64 hints.ai_socktype = SOCK_STREAM;
65 snprintf(portstr, sizeof(portstr), "%d", port);
67 hints.ai_flags |= AI_PASSIVE;
69 ret = getaddrinfo(NULL, portstr, &hints, &ai);
71 ret = getaddrinfo(hostname, portstr, &hints, &ai);
73 av_log(h, AV_LOG_ERROR,
74 "Failed to resolve hostname %s: %s\n",
75 hostname, gai_strerror(ret));
83 fd = socket(cur_ai->ai_family, cur_ai->ai_socktype, cur_ai->ai_protocol);
90 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse));
91 ret = bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
101 fd1 = accept(fd, NULL, NULL);
108 ff_socket_nonblock(fd, 1);
111 ff_socket_nonblock(fd, 1);
112 ret = connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
116 struct pollfd p = {fd, POLLOUT, 0};
118 if (ret == AVERROR(EINTR)) {
119 if (ff_check_interrupt(&h->interrupt_callback)) {
125 if (ret != AVERROR(EINPROGRESS) &&
126 ret != AVERROR(EAGAIN))
129 /* wait until we are connected or until abort */
131 if (ff_check_interrupt(&h->interrupt_callback)) {
135 ret = poll(&p, 1, 100);
140 ret = AVERROR(ETIMEDOUT);
144 optlen = sizeof(ret);
145 if (getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen))
146 ret = AVUNERROR(ff_neterrno());
150 av_strerror(ret, errbuf, sizeof(errbuf));
151 av_log(h, AV_LOG_ERROR,
152 "TCP connection to %s:%d failed: %s\n",
153 hostname, port, errbuf);
163 if (cur_ai->ai_next) {
164 /* Retry with the next sockaddr */
165 cur_ai = cur_ai->ai_next;
177 static int tcp_read(URLContext *h, uint8_t *buf, int size)
179 TCPContext *s = h->priv_data;
182 if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
183 ret = ff_network_wait_fd(s->fd, 0);
187 ret = recv(s->fd, buf, size, 0);
188 return ret < 0 ? ff_neterrno() : ret;
191 static int tcp_write(URLContext *h, const uint8_t *buf, int size)
193 TCPContext *s = h->priv_data;
196 if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
197 ret = ff_network_wait_fd(s->fd, 1);
201 ret = send(s->fd, buf, size, 0);
202 return ret < 0 ? ff_neterrno() : ret;
205 static int tcp_shutdown(URLContext *h, int flags)
207 TCPContext *s = h->priv_data;
210 if (flags & AVIO_FLAG_WRITE && flags & AVIO_FLAG_READ) {
212 } else if (flags & AVIO_FLAG_WRITE) {
218 return shutdown(s->fd, how);
221 static int tcp_close(URLContext *h)
223 TCPContext *s = h->priv_data;
228 static int tcp_get_file_handle(URLContext *h)
230 TCPContext *s = h->priv_data;
234 URLProtocol ff_tcp_protocol = {
236 .url_open = tcp_open,
237 .url_read = tcp_read,
238 .url_write = tcp_write,
239 .url_close = tcp_close,
240 .url_get_file_handle = tcp_get_file_handle,
241 .url_shutdown = tcp_shutdown,
242 .priv_data_size = sizeof(TCPContext),
243 .flags = URL_PROTOCOL_FLAG_NETWORK,