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
25 #include "os_support.h"
27 #include <sys/select.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, *ai, *cur_ai;
45 char hostname[1024],proto[1024],path[1024];
48 av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
49 &port, path, sizeof(path), uri);
50 if (strcmp(proto,"tcp") || port <= 0 || port >= 65536)
51 return AVERROR(EINVAL);
53 memset(&hints, 0, sizeof(hints));
54 hints.ai_family = AF_UNSPEC;
55 hints.ai_socktype = SOCK_STREAM;
56 snprintf(portstr, sizeof(portstr), "%d", port);
57 ret = getaddrinfo(hostname, portstr, &hints, &ai);
59 av_log(NULL, AV_LOG_ERROR,
60 "Failed to resolve hostname %s: %s\n",
61 hostname, gai_strerror(ret));
68 fd = socket(cur_ai->ai_family, cur_ai->ai_socktype, cur_ai->ai_protocol);
71 ff_socket_nonblock(fd, 1);
74 ret = connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
76 if (ff_neterrno() == FF_NETERROR(EINTR)) {
77 if (url_interrupt_cb())
81 if (ff_neterrno() != FF_NETERROR(EINPROGRESS) &&
82 ff_neterrno() != FF_NETERROR(EAGAIN))
85 /* wait until we are connected or until abort */
87 if (url_interrupt_cb()) {
97 tv.tv_usec = 100 * 1000;
98 ret = select(fd_max + 1, NULL, &wfds, &efds, &tv);
99 if (ret > 0 && (FD_ISSET(fd, &wfds) || FD_ISSET(fd, &efds)))
104 optlen = sizeof(ret);
105 getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
107 av_log(NULL, AV_LOG_ERROR,
108 "TCP connection to %s:%d failed: %s\n",
109 hostname, port, strerror(ret));
113 s = av_malloc(sizeof(TCPContext));
116 return AVERROR(ENOMEM);
125 if (cur_ai->ai_next) {
126 /* Retry with the next sockaddr */
127 cur_ai = cur_ai->ai_next;
140 static int tcp_read(URLContext *h, uint8_t *buf, int size)
142 TCPContext *s = h->priv_data;
143 int len, fd_max, ret;
148 if (url_interrupt_cb())
149 return AVERROR(EINTR);
152 FD_SET(s->fd, &rfds);
154 tv.tv_usec = 100 * 1000;
155 ret = select(fd_max + 1, &rfds, NULL, NULL, &tv);
156 if (ret > 0 && FD_ISSET(s->fd, &rfds)) {
157 len = recv(s->fd, buf, size, 0);
159 if (ff_neterrno() != FF_NETERROR(EINTR) &&
160 ff_neterrno() != FF_NETERROR(EAGAIN))
161 return ff_neterrno();
163 } else if (ret < 0) {
164 if (ff_neterrno() == FF_NETERROR(EINTR))
171 static int tcp_write(URLContext *h, const uint8_t *buf, int size)
173 TCPContext *s = h->priv_data;
174 int ret, size1, fd_max, len;
180 if (url_interrupt_cb())
181 return AVERROR(EINTR);
184 FD_SET(s->fd, &wfds);
186 tv.tv_usec = 100 * 1000;
187 ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
188 if (ret > 0 && FD_ISSET(s->fd, &wfds)) {
189 len = send(s->fd, buf, size, 0);
191 if (ff_neterrno() != FF_NETERROR(EINTR) &&
192 ff_neterrno() != FF_NETERROR(EAGAIN))
193 return ff_neterrno();
198 } else if (ret < 0) {
199 if (ff_neterrno() == FF_NETERROR(EINTR))
207 static int tcp_close(URLContext *h)
209 TCPContext *s = h->priv_data;
215 static int tcp_get_file_handle(URLContext *h)
217 TCPContext *s = h->priv_data;
221 URLProtocol tcp_protocol = {
228 .url_get_file_handle = tcp_get_file_handle,