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))
78 if (ff_neterrno() != FF_NETERROR(EINPROGRESS) &&
79 ff_neterrno() != FF_NETERROR(EAGAIN))
82 /* wait until we are connected or until abort */
84 if (url_interrupt_cb()) {
94 tv.tv_usec = 100 * 1000;
95 ret = select(fd_max + 1, NULL, &wfds, &efds, &tv);
96 if (ret > 0 && (FD_ISSET(fd, &wfds) || FD_ISSET(fd, &efds)))
101 optlen = sizeof(ret);
102 getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
104 av_log(NULL, AV_LOG_ERROR,
105 "TCP connection to %s:%d failed: %s\n",
106 hostname, port, strerror(ret));
110 s = av_malloc(sizeof(TCPContext));
113 return AVERROR(ENOMEM);
122 if (cur_ai->ai_next) {
123 /* Retry with the next sockaddr */
124 cur_ai = cur_ai->ai_next;
137 static int tcp_read(URLContext *h, uint8_t *buf, int size)
139 TCPContext *s = h->priv_data;
140 int len, fd_max, ret;
145 if (url_interrupt_cb())
146 return AVERROR(EINTR);
149 FD_SET(s->fd, &rfds);
151 tv.tv_usec = 100 * 1000;
152 ret = select(fd_max + 1, &rfds, NULL, NULL, &tv);
153 if (ret > 0 && FD_ISSET(s->fd, &rfds)) {
154 len = recv(s->fd, buf, size, 0);
156 if (ff_neterrno() != FF_NETERROR(EINTR) &&
157 ff_neterrno() != FF_NETERROR(EAGAIN))
158 return AVERROR(ff_neterrno());
160 } else if (ret < 0) {
161 if (ff_neterrno() == FF_NETERROR(EINTR))
168 static int tcp_write(URLContext *h, const uint8_t *buf, int size)
170 TCPContext *s = h->priv_data;
171 int ret, size1, fd_max, len;
177 if (url_interrupt_cb())
178 return AVERROR(EINTR);
181 FD_SET(s->fd, &wfds);
183 tv.tv_usec = 100 * 1000;
184 ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
185 if (ret > 0 && FD_ISSET(s->fd, &wfds)) {
186 len = send(s->fd, buf, size, 0);
188 if (ff_neterrno() != FF_NETERROR(EINTR) &&
189 ff_neterrno() != FF_NETERROR(EAGAIN))
190 return AVERROR(ff_neterrno());
195 } else if (ret < 0) {
196 if (ff_neterrno() == FF_NETERROR(EINTR))
204 static int tcp_close(URLContext *h)
206 TCPContext *s = h->priv_data;
212 static int tcp_get_file_handle(URLContext *h)
214 TCPContext *s = h->priv_data;
218 URLProtocol tcp_protocol = {
225 .url_get_file_handle = tcp_get_file_handle,