510 lines
17 KiB
C
510 lines
17 KiB
C
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/*
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* TCP protocol
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* Copyright (c) 2002 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavformat/avformat.h"
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#include "libavutil/avassert.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/opt.h"
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#include "libavutil/time.h"
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#include "libavutil/random_seed.h"
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#include "libavformat/internal.h"
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#include "libavformat/network.h"
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#include "libavformat/os_support.h"
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#include "libavformat/url.h"
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#include "aml_getaddrinfo.h"
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#include "get_config.h"
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#if HAVE_POLL_H
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#include <poll.h>
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#endif
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#if HAVE_PTHREADS
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#include <pthread.h>
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#endif
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#include "fftcp.h"
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#include "dns_cache.h"
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#include "getaddrinfo_nonblock.h"
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#include "addrinfo_reorder.h"
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typedef struct TCPContext {
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const AVClass *class;
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int fd;
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int listen;
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int open_timeout;
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int rw_timeout;
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int listen_timeout;
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int recv_buffer_size;
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int send_buffer_size;
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int tcp_nodelay;
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int addrinfo_one_by_one;
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int addrinfo_timeout;
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int dns_cache_timeout;
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DNS_seq_mode dns_seq_mode;
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char *ip_char;
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} TCPContext;
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#define OFFSET(x) offsetof(TCPContext, x)
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#define D AV_OPT_FLAG_DECODING_PARAM
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#define E AV_OPT_FLAG_ENCODING_PARAM
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static const AVOption tcp_options[] = {
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{ "listen", "Listen for incoming connections", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, .flags = D|E },
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{ "tcp_rw_timeout", "set timeout (in microseconds) of socket I/O operations", OFFSET(rw_timeout), AV_OPT_TYPE_INT, { .i64 = 100000 }, -1, INT_MAX, .flags = D|E },
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{ "tcp_connect_timeout", "set connect timeout (in microseconds) of socket", OFFSET(open_timeout), AV_OPT_TYPE_INT, { .i64 = 1000000 }, -1, INT_MAX, .flags = D|E },
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{ "listen_timeout", "Connection awaiting timeout (in milliseconds)", OFFSET(listen_timeout), AV_OPT_TYPE_INT, { .i64 = 5000 }, -1, INT_MAX, .flags = D|E },
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{ "send_buffer_size", "Socket send buffer size (in bytes)", OFFSET(send_buffer_size), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, -1, INT_MAX, .flags = D|E },
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{ "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 },
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{ "tcp_nodelay", "Use TCP_NODELAY to disable nagle's algorithm", OFFSET(tcp_nodelay), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = D|E },
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{ "addrinfo_one_by_one", "parse addrinfo one by one in getaddrinfo()", OFFSET(addrinfo_one_by_one), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, .flags = D|E },
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{ "dns_seq_mode", "the seq to get IP from DNS list", OFFSET(dns_seq_mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, .flags = D|E },
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{ "addrinfo_timeout", "set timeout (in microseconds) for getaddrinfo()", OFFSET(addrinfo_timeout), AV_OPT_TYPE_INT, { .i64 = 5000000 }, -1, INT_MAX, .flags = D|E },
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{ "dns_cache_timeout", "dns cache TTL (in second)", OFFSET(dns_cache_timeout), AV_OPT_TYPE_INT, { .i64 = 50000 }, -1, INT_MAX, .flags = D|E },
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{ "tcp_ip_char", "set HTTP proxy to tunnel through", OFFSET(ip_char), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
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{ NULL }
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};
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static const AVClass tcp_class = {
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.class_name = "tcp",
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.item_name = av_default_item_name,
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.option = tcp_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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/* return non zero if error */
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static int tcp_open(URLContext *h, const char *uri, int flags)
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{
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struct addrinfo hints = { 0 }, *ai = NULL, *cur_ai = NULL;
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int port, fd = -1;
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TCPContext *s = h->priv_data;
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const char *p;
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char buf[256];
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int ret = -1;
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char hostname[1024],proto[1024],path[1024];
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char portstr[10];
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char hostname_bak[1024] = {0};
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DnsPrivateEntry *dns_entry = NULL;
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int priority = check_ip_priority();
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if (s->open_timeout < 0) {
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s->open_timeout = 5000000;
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}
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av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
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&port, path, sizeof(path), uri);
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if (strcmp(proto, "tcp"))
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return AVERROR(EINVAL);
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if (port <= 0 || port >= 65536) {
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av_log(NULL, AV_LOG_ERROR,"Port missing in uri");
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return AVERROR(EINVAL);
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}
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p = strchr(uri, '?');
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if (p) {
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if (av_find_info_tag(buf, sizeof(buf), "listen", p)) {
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char *endptr = NULL;
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s->listen = strtol(buf, &endptr, 10);
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/* assume if no digits were found it is a request to enable it */
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if (buf == endptr)
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s->listen = 1;
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}
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if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) {
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s->rw_timeout = strtol(buf, NULL, 10);
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}
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if (av_find_info_tag(buf, sizeof(buf), "listen_timeout", p)) {
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s->listen_timeout = strtol(buf, NULL, 10);
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}
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}
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if (s->rw_timeout >= 0) {
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//s->open_timeout =
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h->rw_timeout = s->rw_timeout;
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}
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hints.ai_family = AF_UNSPEC;
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hints.ai_socktype = SOCK_STREAM;
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snprintf(portstr, sizeof(portstr), "%d", port);
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if (s->listen)
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hints.ai_flags |= AI_PASSIVE;
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else {
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if (priority == DNS_INTE_V4_only)
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hints.ai_family = AF_INET;
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if (priority == DNS_INTE_V6_only)
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hints.ai_family = AF_INET6;
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}
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if (s->dns_cache_timeout > 0) {
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//enable dns cache
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memcpy(hostname_bak, hostname, 1024);
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dns_entry = get_dns_cache_reference(hostname);
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if (dns_entry) {
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av_log(NULL, AV_LOG_VERBOSE,"Hit DNS cache");
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cur_ai = dns_entry->res;
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} else {
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#ifdef HAVE_PTHREADS
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ret = tcp_getaddrinfo_nonblock(hostname, portstr, &hints, &ai, s->addrinfo_timeout, &h->interrupt_callback, s->addrinfo_one_by_one);
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#else
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if (s->addrinfo_timeout > 0)
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av_log(NULL, AV_LOG_WARNING,"Ignore addrinfo_timeout without pthreads support.");
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if (!hostname[0])
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ret = aml_getaddrinfo(NULL, portstr, &hints, &ai);
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else
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ret = aml_getaddrinfo(hostname, portstr, &hints, &ai);
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#endif
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if (ret) {
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av_log(NULL, AV_LOG_ERROR,"Failed to resolve hostname %s: %s:%d",
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hostname, gai_strerror(ret), ret);
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return AVERROR(EIO);
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}
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ret = addrinfo_reorder(&ai, priority, s->dns_seq_mode);
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if (ret) {
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if (ai) {
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freeaddrinfo(ai);
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}
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av_log(NULL, AV_LOG_ERROR,"sortaddrinfo err, hostname:%s",
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hostname);
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return AVERROR(EIO);
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}
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ret = add_dns_cache_entry(hostname, ai, s->dns_cache_timeout, priority, s->dns_seq_mode);
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if (ret) {
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if (ai) {
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freeaddrinfo(ai);
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}
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av_log(NULL, AV_LOG_ERROR,"add_dns_cache_entry err, hostname:%s: %s",
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hostname, gai_strerror(ret));
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return AVERROR(EIO);
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}
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ai = NULL;
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}
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} else {
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//disable dns cache
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if (!hostname[0])
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ret = getaddrinfo(NULL, portstr, &hints, &ai);
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else
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ret = getaddrinfo(hostname, portstr, &hints, &ai);
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if (ret) {
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av_log(NULL, AV_LOG_ERROR,"Failed to resolve hostname %s: %s",
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hostname, gai_strerror(ret));
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return AVERROR(EIO);
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}
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cur_ai = ai;
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}
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restart:
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if (ai == NULL && dns_entry == NULL)
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{
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dns_entry = get_dns_cache_reference(hostname);
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if (dns_entry) {
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av_log(NULL, AV_LOG_VERBOSE,"Hit DNS cache");
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cur_ai = dns_entry->res;
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} else {
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av_log(NULL, AV_LOG_ERROR,"get_dns_cache_reference err, hostname:%s: %s",
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hostname, gai_strerror(ret));
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return AVERROR(EAGAIN);
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}
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}
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{
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char cur_serv[96];
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char cur_ip[1024];
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getnameinfo(cur_ai->ai_addr, cur_ai->ai_addrlen, cur_ip, sizeof(cur_ip),
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cur_serv, sizeof(cur_serv), NI_NUMERICHOST);
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av_log(NULL, AV_LOG_DEBUG,"now to connect hostname = %s, ip = %s, port:%s", hostname_bak , cur_ip, portstr);
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}
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#if HAVE_STRUCT_SOCKADDR_IN6
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// workaround for IOS9 getaddrinfo in IPv6 only network use hardcode IPv4 address can not resolve port number.
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if (cur_ai->ai_family == AF_INET6) {
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struct sockaddr_in6 * sockaddr_v6 = (struct sockaddr_in6 *)cur_ai->ai_addr;
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sockaddr_v6->sin6_port = htons(port);
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}
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#endif
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if (cur_ai->ai_family == AF_INET) {
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struct sockaddr_in * sockaddr_v4 = (struct sockaddr_in *)cur_ai->ai_addr;
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sockaddr_v4->sin_port = htons(port);
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}
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fd = ff_socket(cur_ai->ai_family,
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cur_ai->ai_socktype,
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cur_ai->ai_protocol);
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if (fd < 0) {
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ret = ff_neterrno();
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av_log(NULL, AV_LOG_WARNING,"ff_neterrno:%d, goto fail", ret);
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goto fail;
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}
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/* Set the socket's send or receive buffer sizes, if specified.
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If unspecified or setting fails, system default is used. */
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if (s->recv_buffer_size > 0) {
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setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &s->recv_buffer_size, sizeof (s->recv_buffer_size));
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int optval = 0;
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int optlen = sizeof(optval);
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getsockopt (fd, SOL_SOCKET, SO_RCVBUF, (char*)&optval, &optlen);
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av_log(NULL, AV_LOG_VERBOSE,"this tcp SO_RCVBUF:%d", optval);
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}
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if (s->send_buffer_size > 0) {
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setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &s->send_buffer_size, sizeof (s->send_buffer_size));
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}
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if (s->tcp_nodelay > 0) {
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setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, &s->tcp_nodelay, sizeof (s->tcp_nodelay));
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}
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if (s->listen == 2) {
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// multi-client
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if ((ret = ff_listen(fd, cur_ai->ai_addr, cur_ai->ai_addrlen)) < 0)
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{
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av_log(NULL, AV_LOG_WARNING,"ff_listen:%d, goto fail1", ret);
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goto fail1;
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}
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} else if (s->listen == 1) {
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// single client
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if ((ret = ff_listen_bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen, s->listen_timeout, h)) < 0)
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{
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av_log(NULL, AV_LOG_WARNING,"ff_listen_bind:%d, goto fail1", ret);
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goto fail1;
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}
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// Socket descriptor already closed here. Safe to overwrite to client one.
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fd = ret;
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} else {
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if ((ret = ff_listen_connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen,
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s->open_timeout / 1000, h, !!cur_ai->ai_next)) < 0) {
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if (ret == AVERROR_EXIT)
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{
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av_log(NULL, AV_LOG_WARNING,"ff_listen_connect:%d, goto fail1", ret);
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goto fail1;
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}
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else
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{
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av_log(NULL, AV_LOG_WARNING,"ff_listen_connect:%d, goto fail", ret);
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goto fail;
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}
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}
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}
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h->is_streamed = 1;
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s->fd = fd;
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{
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char cur_serv[96];
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char cur_ip[1024];
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getnameinfo(cur_ai->ai_addr, cur_ai->ai_addrlen, cur_ip, sizeof(cur_ip),
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cur_serv, sizeof(cur_serv), NI_NUMERICHOST);
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av_log(NULL, AV_LOG_VERBOSE,"connect successful hostname = %s, ip = %s", hostname_bak , cur_ip);
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//add_IP_cache(fd, cur_ip);
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s->ip_char = av_mallocz(strlen(cur_ip)+1);
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strcpy(s->ip_char, cur_ip);
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}
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if (dns_entry) {
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release_DnsPriEntry(&dns_entry);
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}
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if (ai) {
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freeaddrinfo(ai);
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}
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return 0;
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fail:
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if (fd >= 0)
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{
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closesocket(fd);
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fd = -1;
|
||
|
|
}
|
||
|
|
if (ai) {
|
||
|
|
if (cur_ai->ai_next) {
|
||
|
|
/* Retry with the next sockaddr */
|
||
|
|
cur_ai = cur_ai->ai_next;
|
||
|
|
av_freep(&s->ip_char);
|
||
|
|
//remove_IP_cache(s->fd);
|
||
|
|
ret = 0;
|
||
|
|
av_log(NULL, AV_LOG_WARNING,"fail, goto restart");
|
||
|
|
goto restart;
|
||
|
|
} else {
|
||
|
|
av_log(NULL, AV_LOG_WARNING,"fail, goto fail1");
|
||
|
|
goto fail1;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if (dns_entry->res == NULL) {
|
||
|
|
av_log(NULL, AV_LOG_WARNING,"fail, dns_entry->res == NULL, goto fail1");
|
||
|
|
goto fail1;
|
||
|
|
}
|
||
|
|
|
||
|
|
char cur_serv[96];
|
||
|
|
char cur_ip[1024];
|
||
|
|
getnameinfo(cur_ai->ai_addr, cur_ai->ai_addrlen, cur_ip, sizeof(cur_ip),
|
||
|
|
cur_serv, sizeof(cur_serv), NI_NUMERICHOST);
|
||
|
|
int ret_set_dns = set_dns_IP_failed(hostname_bak, cur_ip);
|
||
|
|
if (ret_set_dns < 0)
|
||
|
|
{
|
||
|
|
if (ret_set_dns == -2)
|
||
|
|
{
|
||
|
|
av_log(NULL, AV_LOG_WARNING,"tcp open net down, hostname:%s, IP:%s", hostname_bak, cur_ip);
|
||
|
|
goto fail2;
|
||
|
|
} else {
|
||
|
|
av_log(NULL, AV_LOG_WARNING,"DNS Cache fail! return, hostname:%s, IP:%s, ret:%d", hostname_bak, cur_ip, ret_set_dns);
|
||
|
|
goto fail1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
av_log(NULL, AV_LOG_WARNING,"DNS Cache fail! restart now, hostname:%s, IP:%s", hostname_bak, cur_ip);
|
||
|
|
release_DnsPriEntry(&dns_entry);
|
||
|
|
goto restart;
|
||
|
|
}
|
||
|
|
av_log(NULL, AV_LOG_WARNING,"goto fail1");
|
||
|
|
goto fail1;
|
||
|
|
fail2:
|
||
|
|
if (dns_entry) {
|
||
|
|
av_log(NULL, AV_LOG_ERROR,"Hit dns cache but net down");
|
||
|
|
release_DnsPriEntry(&dns_entry);
|
||
|
|
dns_entry = NULL;
|
||
|
|
}
|
||
|
|
fail1:
|
||
|
|
av_freep(&s->ip_char);
|
||
|
|
//remove_IP_cache(s->fd);
|
||
|
|
if (fd >= 0)
|
||
|
|
{
|
||
|
|
closesocket(fd);
|
||
|
|
fd = -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (dns_entry) {
|
||
|
|
av_log(NULL, AV_LOG_ERROR,"Hit dns cache but connect fail hostname = %s", hostname);
|
||
|
|
release_DnsPriEntry(&dns_entry);
|
||
|
|
if (ret != AVERROR_EXIT)
|
||
|
|
remove_dns_cache_entry(hostname_bak);
|
||
|
|
}
|
||
|
|
if (ai) {
|
||
|
|
freeaddrinfo(ai);
|
||
|
|
}
|
||
|
|
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)
|
||
|
|
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_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;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int tcp_write(URLContext *h, const uint8_t *buf, int size)
|
||
|
|
{
|
||
|
|
TCPContext *s = h->priv_data;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
|
||
|
|
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);
|
||
|
|
return ret < 0 ? ff_neterrno() : ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int tcp_shutdown(URLContext *h, int flags)
|
||
|
|
{
|
||
|
|
TCPContext *s = h->priv_data;
|
||
|
|
int how;
|
||
|
|
|
||
|
|
if (flags & AVIO_FLAG_WRITE && flags & AVIO_FLAG_READ) {
|
||
|
|
how = SHUT_RDWR;
|
||
|
|
} else if (flags & AVIO_FLAG_WRITE) {
|
||
|
|
how = SHUT_WR;
|
||
|
|
} else {
|
||
|
|
how = SHUT_RD;
|
||
|
|
}
|
||
|
|
|
||
|
|
return shutdown(s->fd, how);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int tcp_close(URLContext *h)
|
||
|
|
{
|
||
|
|
TCPContext *s = h->priv_data;
|
||
|
|
av_freep(&s->ip_char);
|
||
|
|
//remove_IP_cache(s->fd);
|
||
|
|
closesocket(s->fd);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int tcp_get_file_handle(URLContext *h)
|
||
|
|
{
|
||
|
|
TCPContext *s = h->priv_data;
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*aml_tcp_protocol*/
|
||
|
|
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,
|
||
|
|
.priv_data_class = &tcp_class,
|
||
|
|
};
|