diff options
Diffstat (limited to 'libavformat/tcp.c')
-rw-r--r-- | libavformat/tcp.c | 149 |
1 files changed, 126 insertions, 23 deletions
diff --git a/libavformat/tcp.c b/libavformat/tcp.c index 7044d44f06..ea41f2e986 100644 --- a/libavformat/tcp.c +++ b/libavformat/tcp.c @@ -2,25 +2,27 @@ * TCP protocol * Copyright (c) 2002 Fabrice Bellard * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "avformat.h" +#include "libavutil/avassert.h" #include "libavutil/parseutils.h" #include "libavutil/opt.h" +#include "libavutil/time.h" #include "internal.h" #include "network.h" @@ -34,17 +36,30 @@ typedef struct TCPContext { const AVClass *class; int fd; int listen; - int timeout; + int open_timeout; + int rw_timeout; int listen_timeout; + int recv_buffer_size; + int send_buffer_size; + int tcp_nodelay; +#if !HAVE_WINSOCK2_H + int tcp_mss; +#endif /* !HAVE_WINSOCK2_H */ } TCPContext; #define OFFSET(x) offsetof(TCPContext, x) #define D AV_OPT_FLAG_DECODING_PARAM #define E AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { - { "listen", "Listen for incoming connections", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = D|E }, - { "timeout", "Connection timeout (in milliseconds)", OFFSET(timeout), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, .flags = D|E }, - { "listen_timeout", "Bind timeout (in milliseconds)", OFFSET(listen_timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, INT_MIN, INT_MAX, .flags = D|E }, + { "listen", "Listen for incoming connections", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, .flags = D|E }, + { "timeout", "set timeout (in microseconds) of socket I/O operations", OFFSET(rw_timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, + { "listen_timeout", "Connection awaiting timeout (in milliseconds)", OFFSET(listen_timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, + { "send_buffer_size", "Socket send buffer size (in bytes)", OFFSET(send_buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, + { "recv_buffer_size", "Socket receive buffer size (in bytes)", OFFSET(recv_buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, + { "tcp_nodelay", "Use TCP_NODELAY to disable nagle's algorithm", OFFSET(tcp_nodelay), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = D|E }, +#if !HAVE_WINSOCK2_H + { "tcp_mss", "Maximum segment size for outgoing TCP packets", OFFSET(tcp_mss), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, +#endif /* !HAVE_WINSOCK2_H */ { NULL } }; @@ -55,6 +70,27 @@ static const AVClass tcp_class = { .version = LIBAVUTIL_VERSION_INT, }; +static void customize_fd(void *ctx, int fd) +{ + TCPContext *s = ctx; + /* Set the socket's send or receive buffer sizes, if specified. + If unspecified or setting fails, system default is used. */ + if (s->recv_buffer_size > 0) { + setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &s->recv_buffer_size, sizeof (s->recv_buffer_size)); + } + if (s->send_buffer_size > 0) { + setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &s->send_buffer_size, sizeof (s->send_buffer_size)); + } + if (s->tcp_nodelay > 0) { + setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &s->tcp_nodelay, sizeof (s->tcp_nodelay)); + } +#if !HAVE_WINSOCK2_H + if (s->tcp_mss > 0) { + setsockopt (fd, IPPROTO_TCP, TCP_MAXSEG, &s->tcp_mss, sizeof (s->tcp_mss)); + } +#endif /* !HAVE_WINSOCK2_H */ +} + /* return non zero if error */ static int tcp_open(URLContext *h, const char *uri, int flags) { @@ -66,6 +102,7 @@ static int tcp_open(URLContext *h, const char *uri, int flags) int ret; char hostname[1024],proto[1024],path[1024]; char portstr[10]; + s->open_timeout = 5000000; av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port, path, sizeof(path), uri); @@ -77,19 +114,24 @@ static int tcp_open(URLContext *h, const char *uri, int flags) } p = strchr(uri, '?'); if (p) { - if (av_find_info_tag(buf, sizeof(buf), "listen", p)) - s->listen = 1; + if (av_find_info_tag(buf, sizeof(buf), "listen", p)) { + char *endptr = NULL; + s->listen = strtol(buf, &endptr, 10); + /* assume if no digits were found it is a request to enable it */ + if (buf == endptr) + s->listen = 1; + } if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) { - s->timeout = strtol(buf, NULL, 10) * 100; + s->rw_timeout = strtol(buf, NULL, 10); } if (av_find_info_tag(buf, sizeof(buf), "listen_timeout", p)) { s->listen_timeout = strtol(buf, NULL, 10); } } - if (!s->timeout) - s->timeout = h->rw_timeout ? h->rw_timeout / 1000 : 10000; - if (h->rw_timeout && s->listen_timeout < 0) - s->listen_timeout = h->rw_timeout / 1000; + if (s->rw_timeout >= 0) { + s->open_timeout = + h->rw_timeout = s->rw_timeout; + } hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; snprintf(portstr, sizeof(portstr), "%d", port); @@ -108,7 +150,17 @@ static int tcp_open(URLContext *h, const char *uri, int flags) cur_ai = ai; - if (s->listen) { +#if HAVE_STRUCT_SOCKADDR_IN6 + // workaround for IOS9 getaddrinfo in IPv6 only network use hardcode IPv4 address can not resolve port number. + if (cur_ai->ai_family == AF_INET6){ + struct sockaddr_in6 * sockaddr_v6 = (struct sockaddr_in6 *)cur_ai->ai_addr; + if (!sockaddr_v6->sin6_port){ + sockaddr_v6->sin6_port = htons(port); + } + } +#endif + + if (s->listen > 0) { while (cur_ai && fd < 0) { fd = ff_socket(cur_ai->ai_family, cur_ai->ai_socktype, @@ -120,20 +172,29 @@ static int tcp_open(URLContext *h, const char *uri, int flags) } if (fd < 0) goto fail1; + customize_fd(s, fd); + } + if (s->listen == 2) { + // multi-client + if ((ret = ff_listen(fd, cur_ai->ai_addr, cur_ai->ai_addrlen)) < 0) + goto fail1; + } else if (s->listen == 1) { + // single client if ((ret = ff_listen_bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen, - s->listen_timeout, h)) < 0) { + s->listen_timeout, h)) < 0) goto fail1; - } + // Socket descriptor already closed here. Safe to overwrite to client one. fd = ret; } else { - ret = ff_connect_parallel(ai, s->timeout, 3, h, &fd, NULL, NULL); + ret = ff_connect_parallel(ai, s->open_timeout / 1000, 3, h, &fd, customize_fd, s); if (ret < 0) goto fail1; } h->is_streamed = 1; s->fd = fd; + freeaddrinfo(ai); return 0; @@ -144,17 +205,37 @@ static int tcp_open(URLContext *h, const char *uri, int flags) return ret; } +static int tcp_accept(URLContext *s, URLContext **c) +{ + TCPContext *sc = s->priv_data; + TCPContext *cc; + int ret; + av_assert0(sc->listen); + if ((ret = ffurl_alloc(c, s->filename, s->flags, &s->interrupt_callback)) < 0) + return ret; + cc = (*c)->priv_data; + ret = ff_accept(sc->fd, sc->listen_timeout, s); + if (ret < 0) { + ffurl_closep(c); + return ret; + } + cc->fd = ret; + return 0; +} + static int tcp_read(URLContext *h, uint8_t *buf, int size) { TCPContext *s = h->priv_data; int ret; if (!(h->flags & AVIO_FLAG_NONBLOCK)) { - ret = ff_network_wait_fd(s->fd, 0); - if (ret < 0) + ret = ff_network_wait_fd_timeout(s->fd, 0, h->rw_timeout, &h->interrupt_callback); + if (ret) return ret; } ret = recv(s->fd, buf, size, 0); + if (ret == 0) + return AVERROR_EOF; return ret < 0 ? ff_neterrno() : ret; } @@ -164,8 +245,8 @@ static int tcp_write(URLContext *h, const uint8_t *buf, int size) int ret; if (!(h->flags & AVIO_FLAG_NONBLOCK)) { - ret = ff_network_wait_fd(s->fd, 1); - if (ret < 0) + ret = ff_network_wait_fd_timeout(s->fd, 1, h->rw_timeout, &h->interrupt_callback); + if (ret) return ret; } ret = send(s->fd, buf, size, MSG_NOSIGNAL); @@ -201,13 +282,35 @@ static int tcp_get_file_handle(URLContext *h) return s->fd; } +static int tcp_get_window_size(URLContext *h) +{ + TCPContext *s = h->priv_data; + int avail; + socklen_t avail_len = sizeof(avail); + +#if HAVE_WINSOCK2_H + /* SO_RCVBUF with winsock only reports the actual TCP window size when + auto-tuning has been disabled via setting SO_RCVBUF */ + if (s->recv_buffer_size < 0) { + return AVERROR(ENOSYS); + } +#endif + + if (getsockopt(s->fd, SOL_SOCKET, SO_RCVBUF, &avail, &avail_len)) { + return ff_neterrno(); + } + return avail; +} + const URLProtocol ff_tcp_protocol = { .name = "tcp", .url_open = tcp_open, + .url_accept = tcp_accept, .url_read = tcp_read, .url_write = tcp_write, .url_close = tcp_close, .url_get_file_handle = tcp_get_file_handle, + .url_get_short_seek = tcp_get_window_size, .url_shutdown = tcp_shutdown, .priv_data_size = sizeof(TCPContext), .flags = URL_PROTOCOL_FLAG_NETWORK, |