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premiere-libtorrent/examples/client_test.cpp

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/*
Copyright (c) 2003, Arvid Norberg
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#include <iterator>
#include "libtorrent/config.hpp"
#ifdef _MSC_VER
#pragma warning(push, 1)
#endif
#include <boost/bind.hpp>
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#include "libtorrent/extensions/metadata_transfer.hpp"
#include "libtorrent/extensions/ut_metadata.hpp"
#include "libtorrent/extensions/ut_pex.hpp"
#include "libtorrent/extensions/smart_ban.hpp"
#include "libtorrent/entry.hpp"
#include "libtorrent/bencode.hpp"
#include "libtorrent/session.hpp"
#include "libtorrent/identify_client.hpp"
#include "libtorrent/alert_types.hpp"
#include "libtorrent/ip_filter.hpp"
#include "libtorrent/magnet_uri.hpp"
#include "libtorrent/bitfield.hpp"
#include "libtorrent/file.hpp"
#include "libtorrent/peer_info.hpp"
#include "libtorrent/socket_io.hpp" // print_address
using boost::bind;
#ifdef _WIN32
#if defined(_MSC_VER)
# define for if (false) {} else for
#endif
#include <windows.h>
#include <conio.h>
bool sleep_and_input(char* c, int sleep)
{
for (int i = 0; i < sleep * 2; ++i)
{
if (_kbhit())
{
*c = _getch();
return true;
}
Sleep(500);
}
return false;
};
void clear_home()
{
CONSOLE_SCREEN_BUFFER_INFO si;
HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE);
GetConsoleScreenBufferInfo(h, &si);
COORD c = {0, 0};
DWORD n;
FillConsoleOutputCharacter(h, ' ', si.dwSize.X * si.dwSize.Y, c, &n);
SetConsoleCursorPosition(h, c);
}
#else
#include <stdlib.h>
#include <stdio.h>
#include <termios.h>
#include <string.h>
#include <sys/ioctl.h>
#define ANSI_TERMINAL_COLORS
struct set_keypress
{
set_keypress()
{
termios new_settings;
tcgetattr(0,&stored_settings);
new_settings = stored_settings;
// Disable canonical mode, and set buffer size to 1 byte
new_settings.c_lflag &= (~ICANON);
new_settings.c_cc[VTIME] = 0;
new_settings.c_cc[VMIN] = 1;
tcsetattr(0,TCSANOW,&new_settings);
}
~set_keypress() { tcsetattr(0,TCSANOW,&stored_settings); }
termios stored_settings;
};
bool sleep_and_input(char* c, int sleep)
{
// sets the terminal to single-character mode
// and resets when destructed
set_keypress s;
fd_set set;
FD_ZERO(&set);
FD_SET(0, &set);
timeval tv = {sleep, 0};
if (select(1, &set, 0, 0, &tv) > 0)
{
*c = getc(stdin);
return true;
}
libtorrent::sleep(500);
return false;
}
void clear_home()
{
puts("\033[2J\033[0;0H");
}
#endif
bool print_trackers = false;
bool print_peers = false;
bool print_log = false;
bool print_downloads = false;
bool print_piece_bar = false;
bool print_file_progress = false;
bool show_pad_files = false;
bool show_dht_status = false;
bool sequential_download = false;
bool print_ip = true;
bool print_as = false;
bool print_timers = false;
bool print_block = false;
bool print_peer_rate = false;
bool print_fails = false;
bool print_send_bufs = true;
FILE* g_log_file = 0;
int active_torrent = 0;
char const* esc(char const* code)
{
#ifdef ANSI_TERMINAL_COLORS
// this is a silly optimization
// to avoid copying of strings
enum { num_strings = 200 };
static char buf[num_strings][20];
static int round_robin = 0;
char* ret = buf[round_robin];
++round_robin;
if (round_robin >= num_strings) round_robin = 0;
ret[0] = '\033';
ret[1] = '[';
int i = 2;
int j = 0;
while (code[j]) ret[i++] = code[j++];
ret[i++] = 'm';
ret[i++] = 0;
return ret;
#else
return "";
#endif
}
std::string to_string(int v, int width)
{
char buf[100];
snprintf(buf, sizeof(buf), "%*d", width, v);
return buf;
}
std::string& to_string(float v, int width, int precision = 3)
{
// this is a silly optimization
// to avoid copying of strings
enum { num_strings = 20 };
static std::string buf[num_strings];
static int round_robin = 0;
std::string& ret = buf[round_robin];
++round_robin;
if (round_robin >= num_strings) round_robin = 0;
ret.resize(20);
int size = snprintf(&ret[0], 20, "%*.*f", width, precision, v);
ret.resize((std::min)(size, width));
return ret;
}
std::string add_suffix(float val, char const* suffix = 0)
{
std::string ret;
if (val == 0)
{
ret.resize(4 + 2, ' ');
if (suffix) ret.resize(4 + 2 + strlen(suffix), ' ');
return ret;
}
const char* prefix[] = {"kB", "MB", "GB", "TB"};
const int num_prefix = sizeof(prefix) / sizeof(const char*);
for (int i = 0; i < num_prefix; ++i)
{
val /= 1000.f;
if (std::fabs(val) < 1000.f)
{
ret = to_string(val, 4);
ret += prefix[i];
if (suffix) ret += suffix;
return ret;
}
}
ret = to_string(val, 4);
ret += "PB";
if (suffix) ret += suffix;
return ret;
}
std::string const& piece_bar(libtorrent::bitfield const& p, int width)
{
#ifdef ANSI_TERMINAL_COLORS
static const char* lookup[] =
{
// black, blue, cyan, white
"40", "44", "46", "47"
};
const int table_size = sizeof(lookup) / sizeof(lookup[0]);
#else
static const char char_lookup[] =
{ ' ', '.', ':', '-', '+', '*', '#'};
const int table_size = sizeof(char_lookup) / sizeof(char_lookup[0]);
#endif
double piece_per_char = p.size() / double(width);
static std::string bar;
bar.clear();
bar.reserve(width * 6);
bar += "[";
if (p.size() == 0)
{
for (int i = 0; i < width; ++i) bar += ' ';
bar += "]";
return bar;
}
// the [piece, piece + pieces_per_char) range is the pieces that are represented by each character
double piece = 0;
for (int i = 0; i < width; ++i, piece += piece_per_char)
{
int num_pieces = 0;
int num_have = 0;
int end = (std::max)(int(piece + piece_per_char), int(piece) + 1);
for (int k = int(piece); k < end; ++k, ++num_pieces)
if (p[k]) ++num_have;
int color = int(std::ceil(num_have / float(num_pieces) * (table_size - 1)));
#ifdef ANSI_TERMINAL_COLORS
bar += esc(lookup[color]);
bar += " ";
#else
bar += char_lookup[color];
#endif
}
#ifdef ANSI_TERMINAL_COLORS
bar += esc("0");
#endif
bar += "]";
return bar;
}
std::string const& progress_bar(int progress, int width, char const* code = "33")
{
static std::string bar;
bar.clear();
bar.reserve(width + 10);
int progress_chars = (progress * width + 500) / 1000;
bar = esc(code);
std::fill_n(std::back_inserter(bar), progress_chars, '#');
std::fill_n(std::back_inserter(bar), width - progress_chars, '-');
bar += esc("0");
return bar;
}
int peer_index(libtorrent::tcp::endpoint addr, std::vector<libtorrent::peer_info> const& peers)
{
using namespace libtorrent;
std::vector<peer_info>::const_iterator i = std::find_if(peers.begin()
, peers.end(), bind(&peer_info::ip, _1) == addr);
if (i == peers.end()) return -1;
return i - peers.begin();
}
void print_peer_info(std::string& out, std::vector<libtorrent::peer_info> const& peers)
{
using namespace libtorrent;
if (print_ip) out += "IP ";
#ifndef TORRENT_DISABLE_GEO_IP
if (print_as) out += "AS ";
#endif
out += "down (total | peak ) up (total | peak ) sent-req recv flags source ";
if (print_fails) out += "fail hshf ";
if (print_send_bufs) out += "rq sndb quota rcvb q-bytes ";
if (print_timers) out += "inactive wait timeout q-time ";
out += "disk rtt ";
if (print_block) out += "block-progress ";
#ifndef TORRENT_DISABLE_RESOLVE_COUNTRIES
out += "country ";
#endif
if (print_peer_rate) out += "peer-rate ";
out += "client \n";
char str[500];
for (std::vector<peer_info>::const_iterator i = peers.begin();
i != peers.end(); ++i)
{
if (i->flags & (peer_info::handshake | peer_info::connecting | peer_info::queued))
continue;
if (print_ip)
{
error_code ec;
snprintf(str, sizeof(str), "%-22s:%-5d ", i->ip.address().to_string(ec).c_str(), i->ip.port());
out += str;
}
#ifndef TORRENT_DISABLE_GEO_IP
if (print_as)
{
error_code ec;
snprintf(str, sizeof(str), "%-42s ", i->inet_as_name.c_str());
out += str;
}
#endif
snprintf(str, sizeof(str)
, "%s%s (%s|%s) %s%s (%s|%s) %s%3d (%3d) %3d %c%c%c%c%c%c%c%c%c%c%c%c%c%c %c%c%c%c%c%c "
, esc("32"), add_suffix(i->down_speed, "/s").c_str()
, add_suffix(i->total_download).c_str(), add_suffix(i->download_rate_peak, "/s").c_str()
, esc("31"), add_suffix(i->up_speed, "/s").c_str(), add_suffix(i->total_upload).c_str()
, add_suffix(i->upload_rate_peak, "/s").c_str(), esc("0")
, i->download_queue_length
, i->target_dl_queue_length
, i->upload_queue_length
, (i->flags & peer_info::interesting)?'I':'.'
, (i->flags & peer_info::choked)?'C':'.'
, (i->flags & peer_info::remote_interested)?'i':'.'
, (i->flags & peer_info::remote_choked)?'c':'.'
, (i->flags & peer_info::supports_extensions)?'e':'.'
, (i->flags & peer_info::local_connection)?'l':'r'
, (i->flags & peer_info::seed)?'s':'.'
, (i->flags & peer_info::on_parole)?'p':'.'
, (i->flags & peer_info::optimistic_unchoke)?'O':'.'
, (i->read_state == peer_info::bw_limit)?'r':
(i->read_state == peer_info::bw_network)?'R':'.'
, (i->write_state == peer_info::bw_limit)?'w':
(i->write_state == peer_info::bw_network)?'W':'.'
, (i->flags & peer_info::snubbed)?'S':'.'
, (i->flags & peer_info::upload_only)?'U':'D'
#ifndef TORRENT_DISABLE_ENCRYPTION
, (i->flags & peer_info::rc4_encrypted)?'E':
(i->flags & peer_info::plaintext_encrypted)?'e':'.'
#else
, '.'
#endif
, (i->source & peer_info::tracker)?'T':'_'
, (i->source & peer_info::pex)?'P':'_'
, (i->source & peer_info::dht)?'D':'_'
, (i->source & peer_info::lsd)?'L':'_'
, (i->source & peer_info::resume_data)?'R':'_'
, (i->source & peer_info::incoming)?'I':'_');
out += str;
if (print_fails)
{
snprintf(str, sizeof(str), "%3d %3d "
, i->failcount, i->num_hashfails);
out += str;
}
if (print_send_bufs)
{
snprintf(str, sizeof(str), "%2d %6d (%s) %5d %6d (%s) %6d "
, i->requests_in_buffer, i->used_send_buffer, add_suffix(i->send_buffer_size).c_str()
, i->send_quota, i->used_receive_buffer, add_suffix(i->receive_buffer_size).c_str()
, i->queue_bytes);
out += str;
}
if (print_timers)
{
snprintf(str, sizeof(str), "%8d %4d %7d %6d "
, total_seconds(i->last_active)
, total_seconds(i->last_request)
, i->request_timeout
, total_seconds(i->download_queue_time));
out += str;
}
snprintf(str, sizeof(str), "%s %4d "
, add_suffix(i->pending_disk_bytes).c_str()
, i->rtt);
out += str;
if (print_block)
{
if (i->downloading_piece_index >= 0)
{
out += progress_bar(
i->downloading_progress * 1000 / i->downloading_total, 14);
}
else
{
out += progress_bar(0, 14);
}
}
#ifndef TORRENT_DISABLE_RESOLVE_COUNTRIES
if (i->country[0] == 0)
{
out += " ..";
}
else
{
snprintf(str, sizeof(str), " %c%c", i->country[0], i->country[1]);
out += str;
}
#endif
if (print_peer_rate)
{
snprintf(str, sizeof(str), " %s", add_suffix(i->remote_dl_rate, "/s").c_str());
out += str;
}
out += " ";
if (i->flags & peer_info::handshake)
{
out += esc("31");
out += " waiting for handshake";
out += esc("0");
out += "\n";
}
else if (i->flags & peer_info::connecting)
{
out += esc("31");
out += " connecting to peer";
out += esc("0");
out += "\n";
}
else if (i->flags & peer_info::queued)
{
out += esc("33");
out += " queued";
out += esc("0");
out += "\n";
}
else
{
out += " ";
out += i->client;
out += "\n";
}
}
}
typedef std::multimap<std::string, libtorrent::torrent_handle> handles_t;
int listen_port = 6881;
float preferred_ratio = 0.f;
int allocation_mode = libtorrent::storage_mode_sparse;
std::string save_path(".");
int torrent_upload_limit = 0;
int torrent_download_limit = 0;
std::string monitor_dir;
std::string bind_to_interface = "";
int poll_interval = 5;
int max_connections_per_torrent = 50;
using boost::bind;
// monitored_dir is true if this torrent is added because
// it was found in the directory that is monitored. If it
// is, it should be remembered so that it can be removed
// if it's no longer in that directory.
void add_torrent(libtorrent::session& ses
, handles_t& handles
, std::string const& torrent
, float preferred_ratio
, int allocation_mode
, std::string const& save_path
, bool monitored_dir
, int torrent_upload_limit
, int torrent_download_limit)
{
using namespace libtorrent;
boost::intrusive_ptr<torrent_info> t;
error_code ec;
t = new torrent_info(torrent.c_str(), ec);
if (ec)
{
fprintf(stderr, "%s: %s\n", torrent.c_str(), ec.message().c_str());
return;
}
printf("%s\n", t->name().c_str());
add_torrent_params p;
lazy_entry resume_data;
std::string filename = combine_path(save_path, t->name() + ".resume");
std::vector<char> buf;
if (load_file(filename.c_str(), buf) == 0)
p.resume_data = &buf;
p.ti = t;
p.save_path = save_path;
p.storage_mode = (storage_mode_t)allocation_mode;
p.paused = true;
p.duplicate_is_error = false;
p.auto_managed = true;
torrent_handle h = ses.add_torrent(p, ec);
handles.insert(std::pair<const std::string, torrent_handle>(
monitored_dir?std::string(torrent):std::string(), h));
h.set_max_connections(max_connections_per_torrent);
h.set_max_uploads(-1);
h.set_ratio(preferred_ratio);
h.set_upload_limit(torrent_upload_limit);
h.set_download_limit(torrent_download_limit);
#ifndef TORRENT_DISABLE_RESOLVE_COUNTRIES
h.resolve_countries(true);
#endif
}
void scan_dir(std::string const& dir_path
, libtorrent::session& ses
, handles_t& handles
, float preferred_ratio
, int allocation_mode
, std::string const& save_path
, int torrent_upload_limit
, int torrent_download_limit)
{
std::set<std::string> valid;
using namespace libtorrent;
error_code ec;
for (directory i(dir_path, ec); !i.done(); i.next(ec))
{
std::string file = combine_path(dir_path, i.file());
if (extension(file) != ".torrent") continue;
handles_t::iterator k = handles.find(file);
if (k != handles.end())
{
valid.insert(file);
continue;
}
// the file has been added to the dir, start
// downloading it.
add_torrent(ses, handles, file, preferred_ratio, allocation_mode
, save_path, true, torrent_upload_limit, torrent_download_limit);
valid.insert(file);
}
// remove the torrents that are no longer in the directory
for (handles_t::iterator i = handles.begin(); !handles.empty() && i != handles.end();)
{
if (i->first.empty() || valid.find(i->first) != valid.end())
{
++i;
continue;
}
torrent_handle& h = i->second;
if (!h.is_valid())
{
handles.erase(i++);
continue;
}
h.auto_managed(false);
h.pause();
// the alert handler for save_resume_data_alert
// will save it to disk
h.save_resume_data();
handles.erase(i++);
}
}
libtorrent::torrent_handle get_active_torrent(handles_t const& handles)
{
if (active_torrent >= handles.size()
|| active_torrent < 0) return libtorrent::torrent_handle();
handles_t::const_iterator i = handles.begin();
std::advance(i, active_torrent);
return i->second;
}
void print_alert(libtorrent::alert const* a, std::string& str)
{
using namespace libtorrent;
#ifdef ANSI_TERMINAL_COLORS
if (a->category() & alert::error_notification)
{
str += esc("31");
}
else if (a->category() & (alert::peer_notification | alert::storage_notification))
{
str += esc("33");
}
#endif
str += "[";
str += time_now_string();
str += "] ";
str += a->message();
#ifdef ANSI_TERMINAL_COLORS
str += esc("0");
#endif
if (g_log_file)
fprintf(g_log_file, "[%s] %s\n", time_now_string(), a->message().c_str());
}
int save_file(std::string const& filename, std::vector<char>& v)
{
using namespace libtorrent;
file f;
error_code ec;
if (!f.open(filename, file::write_only, ec)) return -1;
if (ec) return -1;
file::iovec_t b = {&v[0], v.size()};
size_type written = f.writev(0, &b, 1, ec);
if (written != v.size()) return -3;
if (ec) return -3;
return 0;
}
void handle_alert(libtorrent::session& ses, libtorrent::alert* a
, handles_t const& handles)
{
using namespace libtorrent;
if (torrent_finished_alert* p = alert_cast<torrent_finished_alert>(a))
{
p->handle.set_max_connections(max_connections_per_torrent / 2);
// write resume data for the finished torrent
// the alert handler for save_resume_data_alert
// will save it to disk
torrent_handle h = p->handle;
h.save_resume_data();
}
else if (save_resume_data_alert* p = alert_cast<save_resume_data_alert>(a))
{
torrent_handle h = p->handle;
TORRENT_ASSERT(p->resume_data);
if (p->resume_data)
{
std::vector<char> out;
bencode(std::back_inserter(out), *p->resume_data);
save_file(combine_path(h.save_path(), h.name() + ".resume"), out);
if (std::find_if(handles.begin(), handles.end()
, bind(&handles_t::value_type::second, _1) == h) == handles.end())
ses.remove_torrent(h);
}
}
else if (save_resume_data_failed_alert* p = alert_cast<save_resume_data_failed_alert>(a))
{
torrent_handle h = p->handle;
if (std::find_if(handles.begin(), handles.end()
, bind(&handles_t::value_type::second, _1) == h) == handles.end())
ses.remove_torrent(h);
}
}
static char const* state_str[] =
{"checking (q)", "checking", "dl metadata"
, "downloading", "finished", "seeding", "allocating", "checking (r)"};
int main(int argc, char* argv[])
{
if (argc == 1)
{
fprintf(stderr, "usage: client_test [OPTIONS] [TORRENT|MAGNETURL]\n\n"
"OPTIONS:\n"
" -f <log file> logs all events to the given file\n"
" -o <limit> limits the number of simultaneous\n"
" half-open TCP connections to the\n"
" given number.\n"
" -p <port> sets the listen port\n"
" -r <ratio> sets the preferred share ratio\n"
" -d <rate> limits the download rate\n"
" -u <rate> limits the upload rate\n"
" -S <limit> limits the upload slots\n"
" -a <mode> sets the allocation mode. [compact|full]\n"
" -s <path> sets the save path for downloads\n"
" -U <rate> sets per-torrent upload rate\n"
" -D <rate> sets per-torrent download rate\n"
" -m <path> sets the .torrent monitor directory\n"
" -b <IP> sets IP of the interface to bind the\n"
" listen socket to\n"
" -w <seconds> sets the retry time for failed web seeds\n"
" -t <seconds> sets the scan interval of the monitor dir\n"
" -x <file> loads an emule IP-filter file\n"
" -c <limit> sets the max number of connections\n"
" -T <limit> sets the max number of connections per torrent\n"
#if TORRENT_USE_I2P
" -i <i2p-host> the hostname to an I2P SAM bridge to use\n"
#endif
" -C <limit> sets the max cache size. Specified in 16kB blocks\n"
" -F <seconds> sets the UI refresh rate. This is the number of\n"
" seconds between screen refreshes.\n"
" -n announce to trackers in all tiers\n"
" -h allow multiple connections from the same IP\n"
"\n\n"
"TORRENT is a path to a .torrent file\n"
"MAGNETURL is a magnet: url\n")
;
return 0;
}
using namespace libtorrent;
session_settings settings;
settings.user_agent = "client_test/" LIBTORRENT_VERSION;
settings.auto_upload_slots_rate_based = true;
//settings.announce_to_all_trackers = true;
settings.optimize_hashing_for_speed = false;
settings.disk_cache_algorithm = session_settings::largest_contiguous;
settings.volatile_read_cache = true;
int refresh_delay = 1;
std::deque<std::string> events;
ptime next_dir_scan = time_now();
// the string is the filename of the .torrent file, but only if
// it was added through the directory monitor. It is used to
// be able to remove torrents that were added via the directory
// monitor when they're not in the directory anymore.
handles_t handles;
session ses(fingerprint("LT", LIBTORRENT_VERSION_MAJOR, LIBTORRENT_VERSION_MINOR, 0, 0)
, session::add_default_plugins
, alert::all_categories
& ~(alert::dht_notification
+ alert::progress_notification
+ alert::debug_notification
+ alert::stats_notification));
std::vector<char> in;
if (load_file(".ses_state", in) == 0)
{
ses.load_state(bdecode(in.begin(), in.end()));
}
#ifndef TORRENT_DISABLE_DHT
settings.use_dht_as_fallback = false;
ses.add_dht_router(std::make_pair(
std::string("router.bittorrent.com"), 6881));
ses.add_dht_router(std::make_pair(
std::string("router.utorrent.com"), 6881));
ses.add_dht_router(std::make_pair(
std::string("router.bitcomet.com"), 6881));
if (load_file(".dht_state", in) == 0)
{
ses.start_dht(bdecode(in.begin(), in.end()));
}
else
{
ses.start_dht();
}
#endif
ses.start_lsd();
ses.start_upnp();
ses.start_natpmp();
#ifndef TORRENT_DISABLE_GEO_IP
ses.load_asnum_db("GeoIPASNum.dat");
ses.load_country_db("GeoIP.dat");
#endif
// load the torrents given on the commandline
for (int i = 1; i < argc; ++i)
{
if (argv[i][0] != '-')
{
// interpret this as a torrent
// first see if this is a torrentless download
if (std::strstr("magnet:", argv[i]) == argv[i])
{
add_torrent_params p;
p.save_path = save_path;
p.storage_mode = (storage_mode_t)allocation_mode;
printf("adding MANGET link: %s\n", argv[i]);
error_code ec;
torrent_handle h = add_magnet_uri(ses, argv[i], p, ec);
if (ec)
{
fprintf(stderr, "%s\n", ec.message().c_str());
continue;
}
handles.insert(std::pair<const std::string, torrent_handle>(std::string(), h));
h.set_max_connections(max_connections_per_torrent);
h.set_max_uploads(-1);
h.set_ratio(preferred_ratio);
h.set_upload_limit(torrent_upload_limit);
h.set_download_limit(torrent_download_limit);
continue;
}
// match it against the <hash>@<tracker> format
if (strlen(argv[i]) > 45
&& is_hex(argv[i], 40)
&& string_begins_no_case(argv[i] + 40, "@http"))
{
sha1_hash info_hash;
from_hex(argv[i], 40, (char*)&info_hash[0]);
add_torrent_params p;
p.tracker_url = argv[i] + 41;
p.info_hash = info_hash;
p.save_path = save_path;
p.storage_mode = (storage_mode_t)allocation_mode;
p.paused = true;
p.duplicate_is_error = false;
p.auto_managed = true;
error_code ec;
torrent_handle h = ses.add_torrent(p, ec);
if (ec)
{
fprintf(stderr, "%s\n", ec.message().c_str());
continue;
}
handles.insert(std::pair<const std::string, torrent_handle>(std::string(), h));
h.set_max_connections(max_connections_per_torrent);
h.set_max_uploads(-1);
h.set_ratio(preferred_ratio);
h.set_upload_limit(torrent_upload_limit);
h.set_download_limit(torrent_download_limit);
continue;
}
// if it's a torrent file, open it as usual
add_torrent(ses, handles, argv[i], preferred_ratio
, allocation_mode, save_path, false
, torrent_upload_limit, torrent_download_limit);
continue;
}
// if there's a flag but no argument following, ignore it
if (argc == i) continue;
char const* arg = argv[i+1];
switch (argv[i][1])
{
case 'f': g_log_file = fopen(arg, "w+"); break;
case 'o': ses.set_max_half_open_connections(atoi(arg)); break;
case 'h': settings.allow_multiple_connections_per_ip = true; --i; break;
case 'p': listen_port = atoi(arg); break;
case 'r':
preferred_ratio = atoi(arg);
if (preferred_ratio != 0 && preferred_ratio < 1.f) preferred_ratio = 1.f;
break;
case 'n': settings.announce_to_all_tiers = true; --i; break;
case 'd': ses.set_download_rate_limit(atoi(arg) * 1000); break;
case 'u': ses.set_upload_rate_limit(atoi(arg) * 1000); break;
case 'S': ses.set_max_uploads(atoi(arg)); break;
case 'a':
if (strcmp(arg, "allocate") == 0) allocation_mode = storage_mode_allocate;
if (strcmp(arg, "compact") == 0) allocation_mode = storage_mode_compact;
break;
case 's': save_path = arg; break;
case 'U': torrent_upload_limit = atoi(arg) * 1000; break;
case 'D': torrent_download_limit = atoi(arg) * 1000; break;
case 'm': monitor_dir = arg; break;
case 'b': bind_to_interface = arg; break;
case 'w': settings.urlseed_wait_retry = atoi(arg); break;
case 't': poll_interval = atoi(arg); break;
case 'F': refresh_delay = atoi(arg); break;
case 'x':
{
/*
std::ifstream in(arg);
ip_filter filter;
while (in.good())
{
char line[300];
in.getline(line, 300);
int len = in.gcount();
if (len <= 0) continue;
if (line[0] == '#') continue;
int a, b, c, d;
char dummy;
std::stringstream ln(line);
ln >> a >> dummy >> b >> dummy >> c >> dummy >> d >> dummy;
address_v4 start((a << 24) + (b << 16) + (c << 8) + d);
ln >> a >> dummy >> b >> dummy >> c >> dummy >> d;
address_v4 last((a << 24) + (b << 16) + (c << 8) + d);
int flags;
ln >> flags;
if (flags <= 127) flags = ip_filter::blocked;
else flags = 0;
if (ln.fail()) break;
filter.add_rule(start, last, flags);
}
ses.set_ip_filter(filter);
*/
}
break;
case 'c': ses.set_max_connections(atoi(arg)); break;
case 'T': max_connections_per_torrent = atoi(arg); break;
#if TORRENT_USE_I2P
case 'i':
{
proxy_settings ps;
ps.hostname = arg;
ps.port = 7656; // default SAM port
ps.type = proxy_settings::i2p_proxy;
ses.set_i2p_proxy(ps);
break;
}
#endif // TORRENT_USE_I2P
case 'C': settings.cache_size = atoi(arg); break;
}
++i; // skip the argument
}
ses.listen_on(std::make_pair(listen_port, listen_port + 10)
, bind_to_interface.c_str());
ses.set_settings(settings);
// main loop
std::vector<peer_info> peers;
std::vector<partial_piece_info> queue;
for (;;)
{
char c;
while (sleep_and_input(&c, refresh_delay))
{
if (c == 27)
{
// escape code, read another character
#ifdef _WIN32
c = _getch();
#else
c = getc(stdin);
#endif
if (c != '[') break;
#ifdef _WIN32
c = _getch();
#else
c = getc(stdin);
#endif
if (c == 65)
{
// arrow up
--active_torrent;
if (active_torrent < 0) active_torrent = 0;
}
else if (c == 66)
{
// arrow down
++active_torrent;
if (active_torrent >= handles.size()) active_torrent = handles.size() - 1;
}
}
if (c == ' ')
{
if (ses.is_paused()) ses.resume();
else ses.pause();
}
if (c == 'm')
{
printf("saving peers for torrents\n");
std::vector<peer_list_entry> peers;
for (handles_t::iterator i = handles.begin();
i != handles.end(); ++i)
{
i->second.get_full_peer_list(peers);
FILE* f = fopen(("peers_" + i->second.name()).c_str(), "w+");
if (!f) break;
for (std::vector<peer_list_entry>::iterator k = peers.begin()
, end(peers.end()); k != end; ++k)
{
fprintf(f, "%s\t%d\n", print_address(k->ip.address()).c_str()
#ifndef TORRENT_DISABLE_GEO_IP
, ses.as_for_ip(k->ip.address())
#else
, 0
#endif
);
}
}
}
if (c == 'q')
{
// keep track of the number of resume data
// alerts to wait for
int num_resume_data = 0;
ses.pause();
for (handles_t::iterator i = handles.begin();
i != handles.end(); ++i)
{
torrent_handle& h = i->second;
if (!h.is_valid()) continue;
if (h.is_paused()) continue;
if (!h.has_metadata()) continue;
printf("saving resume data for %s\n", h.name().c_str());
// save_resume_data will generate an alert when it's done
h.save_resume_data();
++num_resume_data;
}
printf("waiting for resume data\n");
while (num_resume_data > 0)
{
alert const* a = ses.wait_for_alert(seconds(30));
if (a == 0)
{
printf(" aborting with %d outstanding "
"torrents to save resume data for", num_resume_data);
break;
}
std::auto_ptr<alert> holder = ses.pop_alert();
std::string log;
::print_alert(holder.get(), log);
printf("%s\n", log.c_str());
if (alert_cast<save_resume_data_failed_alert>(a))
{
--num_resume_data;
continue;
}
save_resume_data_alert const* rd = alert_cast<save_resume_data_alert>(a);
if (!rd) continue;
--num_resume_data;
if (!rd->resume_data) continue;
torrent_handle h = rd->handle;
std::vector<char> out;
bencode(std::back_inserter(out), *rd->resume_data);
save_file(combine_path(h.save_path(), h.name() + ".resume"), out);
}
break;
}
if (c == 'j')
{
torrent_handle h = get_active_torrent(handles);
if (h.is_valid()) h.force_recheck();
}
if (c == 'r')
{
torrent_handle h = get_active_torrent(handles);
if (h.is_valid()) h.force_reannounce();
}
if (c == 's')
{
torrent_handle h = get_active_torrent(handles);
if (h.is_valid()) h.set_sequential_download(!h.is_sequential_download());
}
if (c == 'o')
{
torrent_handle h = get_active_torrent(handles);
if (h.is_valid())
{
int num_pieces = h.get_torrent_info().num_pieces();
if (num_pieces > 300) num_pieces = 300;
for (int i = 0; i < num_pieces; ++i)
{
h.set_piece_deadline(i, (i+5) * 1000, torrent_handle::alert_when_available);
}
}
}
if (c == 'v')
{
torrent_handle h = get_active_torrent(handles);
if (h.is_valid()) h.scrape_tracker();
}
if (c == 'p')
{
torrent_handle h = get_active_torrent(handles);
if (h.is_valid())
{
if (!h.is_auto_managed() && h.is_paused())
{
h.auto_managed(true);
}
else
{
h.auto_managed(false);
h.pause();
}
// the alert handler for save_resume_data_alert
// will save it to disk
h.save_resume_data();
}
}
if (c == 'c')
{
torrent_handle h = get_active_torrent(handles);
if (h.is_valid()) h.clear_error();
}
// toggle displays
if (c == 't') print_trackers = !print_trackers;
if (c == 'i') print_peers = !print_peers;
if (c == 'l') print_log = !print_log;
if (c == 'd') print_downloads = !print_downloads;
if (c == 'f') print_file_progress = !print_file_progress;
if (c == 'h') show_pad_files = !show_pad_files;
if (c == 'a') print_piece_bar = !print_piece_bar;
if (c == 'g') show_dht_status = !show_dht_status;
// toggle columns
if (c == '1') print_ip = !print_ip;
if (c == '2') print_as = !print_as;
if (c == '3') print_timers = !print_timers;
if (c == '4') print_block = !print_block;
if (c == '5') print_peer_rate = !print_peer_rate;
if (c == '6') print_fails = !print_fails;
if (c == '7') print_send_bufs = !print_send_bufs;
}
if (c == 'q') break;
int terminal_width = 80;
#ifndef _WIN32
{
winsize size;
ioctl(STDOUT_FILENO, TIOCGWINSZ, (char*)&size);
terminal_width = size.ws_col;
}
#endif
// loop through the alert queue to see if anything has happened.
std::auto_ptr<alert> a;
a = ses.pop_alert();
std::string now = time_now_string();
while (a.get())
{
std::string event_string;
::print_alert(a.get(), event_string);
::handle_alert(ses, a.get(), handles);
events.push_back(event_string);
if (events.size() >= 20) events.pop_front();
a = ses.pop_alert();
}
session_status sess_stat = ses.status();
std::string out;
out = "[q] quit [i] toggle peers [d] toggle downloading pieces [p] toggle paused "
"[a] toggle piece bar [s] toggle download sequential [f] toggle files "
"[j] force recheck [space] toggle session pause [c] clear error [v] scrape [g] show DHT\n"
"[1] toggle IP [2] toggle AS [3] toggle timers [4] toggle block progress "
"[5] toggle peer rate [6] toggle failures [7] toggle send buffers\n";
char str[500];
int torrent_index = 0;
torrent_handle active_handle;
for (handles_t::iterator i = handles.begin();
i != handles.end(); ++torrent_index)
{
torrent_handle& h = i->second;
if (!h.is_valid())
{
handles.erase(i++);
continue;
}
else
{
++i;
}
#ifdef ANSI_TERMINAL_COLORS
char const* term = "\x1b[0m";
#else
char const* term = "";
#endif
if (active_torrent == torrent_index)
{
term = "\x1b[0m\x1b[7m";
out += esc("7");
out += "*";
}
else
{
out += " ";
}
int queue_pos = h.queue_position();
if (queue_pos == -1) out += "- ";
else
{
snprintf(str, sizeof(str), "%-3d", queue_pos);
out += str;
}
if (h.is_paused()) out += esc("34");
else out += esc("37");
std::string name = h.name();
if (name.size() > 40) name.resize(40);
snprintf(str, sizeof(str), "%-40s %s ", name.c_str(), term);
out += str;
torrent_status s = h.status();
bool paused = h.is_paused();
bool auto_managed = h.is_auto_managed();
bool sequential_download = h.is_sequential_download();
if (!s.error.empty())
{
out += esc("31");
out += "error ";
out += s.error;
out += esc("0");
out += "\n";
continue;
}
int seeds = 0;
int downloaders = 0;
if (s.num_complete >= 0) seeds = s.num_complete;
else seeds = s.list_seeds;
if (s.num_incomplete >= 0) downloaders = s.num_incomplete;
else downloaders = s.list_peers - s.list_seeds;
if (s.state != torrent_status::queued_for_checking && s.state != torrent_status::checking_files)
{
snprintf(str, sizeof(str), "%-13s down: (%s%s%s) up: %s%s%s (%s%s%s) swarm: %4d:%4d"
" bw queue: (%d|%d) all-time (Rx: %s%s%s Tx: %s%s%s) seed rank: %x%s\n"
, (paused && !auto_managed)?"paused":(paused && auto_managed)?"queued":state_str[s.state]
, esc("32"), add_suffix(s.total_download).c_str(), term
, esc("31"), add_suffix(s.upload_rate, "/s").c_str(), term
, esc("31"), add_suffix(s.total_upload).c_str(), term
, downloaders, seeds
, s.up_bandwidth_queue, s.down_bandwidth_queue
, esc("32"), add_suffix(s.all_time_download).c_str(), term
, esc("31"), add_suffix(s.all_time_upload).c_str(), term
, s.seed_rank, esc("0"));
out += str;
if (torrent_index != active_torrent && s.state == torrent_status::seeding) continue;
char const* progress_bar_color = "33"; // yellow
if (s.state == torrent_status::downloading_metadata)
{
progress_bar_color = "35"; // magenta
}
else if (s.current_tracker.empty())
{
progress_bar_color = "31"; // red
}
else if (sess_stat.has_incoming_connections)
{
progress_bar_color = "32"; // green
}
snprintf(str, sizeof(str), " %-10s: %s%-10"PRId64"%s Bytes %6.2f%% %s\n"
, sequential_download?"sequential":"progress"
, esc("32"), s.total_done, esc("0")
, s.progress_ppm / 10000.f
, progress_bar(s.progress_ppm / 1000, terminal_width - 42, progress_bar_color).c_str());
out += str;
}
else
{
snprintf(str, sizeof(str), "%-13s %s\n"
, state_str[s.state]
, progress_bar(s.progress_ppm / 1000, terminal_width - 42 - 20, "35").c_str());
out += str;
}
if (print_piece_bar && s.progress_ppm < 1000000 && s.progress > 0)
{
out += " ";
out += piece_bar(s.pieces, terminal_width - 7);
out += "\n";
}
if (s.state != torrent_status::queued_for_checking && s.state != torrent_status::checking_files)
{
boost::posix_time::time_duration t = s.next_announce;
snprintf(str, sizeof(str)
, " peers: %s%d%s (%s%d%s) seeds: %s%d%s distributed copies: %s%4.2f%s "
"sparse regions: %d download: %s%s%s next announce: %s%02d:%02d:%02d%s "
"tracker: %s%s%s\n"
, esc("37"), s.num_peers, esc("0")
, esc("37"), s.connect_candidates, esc("0")
, esc("37"), s.num_seeds, esc("0")
, esc("37"), s.distributed_copies, esc("0")
, s.sparse_regions
, esc("32"), add_suffix(s.download_rate, "/s").c_str(), esc("0")
, esc("37"), t.hours(), t.minutes(), t.seconds(), esc("0")
, esc("36"), s.current_tracker.c_str(), esc("0"));
out += str;
}
if (torrent_index != active_torrent) continue;
active_handle = h;
}
cache_status cs = ses.get_cache_status();
if (cs.blocks_read < 1) cs.blocks_read = 1;
if (cs.blocks_written < 1) cs.blocks_written = 1;
snprintf(str, sizeof(str), "==== conns: %d down: %s%s%s (%s%s%s) up: %s%s%s (%s%s%s) "
"tcp/ip: %s%s%s %s%s%s DHT: %s%s%s %s%s%s tracker: %s%s%s %s%s%s ====\n"
, sess_stat.num_peers
, esc("32"), add_suffix(sess_stat.download_rate, "/s").c_str(), esc("0")
, esc("32"), add_suffix(sess_stat.total_download).c_str(), esc("0")
, esc("31"), add_suffix(sess_stat.upload_rate, "/s").c_str(), esc("0")
, esc("31"), add_suffix(sess_stat.total_upload).c_str(), esc("0")
, esc("32"), add_suffix(sess_stat.ip_overhead_download_rate, "/s").c_str(), esc("0")
, esc("31"), add_suffix(sess_stat.ip_overhead_upload_rate, "/s").c_str(), esc("0")
, esc("32"), add_suffix(sess_stat.dht_download_rate, "/s").c_str(), esc("0")
, esc("31"), add_suffix(sess_stat.dht_upload_rate, "/s").c_str(), esc("0")
, esc("32"), add_suffix(sess_stat.tracker_download_rate, "/s").c_str(), esc("0")
, esc("31"), add_suffix(sess_stat.tracker_upload_rate, "/s").c_str(), esc("0"));
out += str;
snprintf(str, sizeof(str), "==== waste: %s fail: %s unchoked: %d / %d "
"bw queues: %8d (%d) | %8d (%d) cache: w: %"PRId64"%% r: %"PRId64"%% size: %s (%s) / %s dq: %"PRId64" ===\n"
, add_suffix(sess_stat.total_redundant_bytes).c_str()
, add_suffix(sess_stat.total_failed_bytes).c_str()
, sess_stat.num_unchoked, sess_stat.allowed_upload_slots
, sess_stat.up_bandwidth_bytes_queue
, sess_stat.up_bandwidth_queue
, sess_stat.down_bandwidth_bytes_queue
, sess_stat.down_bandwidth_queue
, (cs.blocks_written - cs.writes) * 100 / cs.blocks_written
, cs.blocks_read_hit * 100 / cs.blocks_read
, add_suffix(cs.cache_size * 16 * 1024).c_str()
, add_suffix(cs.read_cache_size * 16 * 1024).c_str()
, add_suffix(cs.total_used_buffers * 16 * 1024).c_str()
, cs.queued_bytes);
out += str;
snprintf(str, sizeof(str), "==== optimistic unchoke: %d unchoke counter: %d ====\n"
, sess_stat.optimistic_unchoke_counter, sess_stat.unchoke_counter);
out += str;
#ifndef TORRENT_DISABLE_DHT
if (show_dht_status)
{
snprintf(str, sizeof(str), "DHT nodes: %d DHT cached nodes: %d total DHT size: %"PRId64"\n"
, sess_stat.dht_nodes, sess_stat.dht_node_cache, sess_stat.dht_global_nodes);
out += str;
for (std::vector<dht_lookup>::iterator i = sess_stat.active_requests.begin()
, end(sess_stat.active_requests.end()); i != end; ++i)
{
snprintf(str, sizeof(str)
, " %s in flight: %d [limit: %d] timeouts %d responses %d left %d\n"
, i->type, i->outstanding_requests, i->branch_factor, i->timeouts
, i->responses, i->nodes_left);
out += str;
}
}
#endif
if (active_handle.is_valid())
{
torrent_handle h = active_handle;
torrent_status s = h.status();
if ((print_downloads && s.state != torrent_status::seeding)
|| print_peers)
h.get_peer_info(peers);
out += "====== ";
out += h.name();
out += " ======\n";
if (print_peers && !peers.empty())
print_peer_info(out, peers);
if (print_trackers)
{
std::vector<announce_entry> tr = h.trackers();
ptime now = time_now();
for (std::vector<announce_entry>::iterator i = tr.begin()
, end(tr.end()); i != end; ++i)
{
snprintf(str, sizeof(str), "%2d %-55s fails: %-3d %s %s\n"
, i->tier, i->url.c_str(), i->fails, i->verified?"OK ":"- "
, i->updating?"updating"
:!i->verified?""
:to_string(total_seconds(i->next_announce - now), 8).c_str());
out += str;
}
}
if (print_downloads)
{
h.get_download_queue(queue);
std::sort(queue.begin(), queue.end(), bind(&partial_piece_info::piece_index, _1)
< bind(&partial_piece_info::piece_index, _2));
std::vector<cached_piece_info> pieces;
ses.get_cache_info(h.info_hash(), pieces);
for (std::vector<partial_piece_info>::iterator i = queue.begin();
i != queue.end(); ++i)
{
cached_piece_info* cp = 0;
std::vector<cached_piece_info>::iterator cpi = std::find_if(pieces.begin(), pieces.end()
, bind(&cached_piece_info::piece, _1) == i->piece_index);
if (cpi != pieces.end()) cp = &*cpi;
snprintf(str, sizeof(str), "%5d: [", i->piece_index);
out += str;
for (int j = 0; j < i->blocks_in_piece; ++j)
{
int index = peer_index(i->blocks[j].peer(), peers);
char chr = '+';
if (index >= 0)
chr = (index < 10)?'0' + index:'A' + index - 10;
char const* color = "";
#ifdef ANSI_TERMINAL_COLORS
if (cp && cp->blocks[j]) color = esc("36;7");
else if (i->blocks[j].bytes_progress > 0
&& i->blocks[j].state == block_info::requested)
{
if (i->blocks[j].num_peers > 1) color = esc("1;7");
else color = esc("33;7");
chr = '0' + (i->blocks[j].bytes_progress / float(i->blocks[j].block_size) * 10);
}
else if (i->blocks[j].state == block_info::finished) color = esc("32;7");
else if (i->blocks[j].state == block_info::writing) color = esc("35;7");
else if (i->blocks[j].state == block_info::requested) color = esc("0");
else { color = esc("0"); chr = ' '; }
#else
if (cp && cp->blocks[j]) chr = 'c';
else if (i->blocks[j].state == block_info::finished) chr = '#';
else if (i->blocks[j].state == block_info::writing) chr = '+';
else if (i->blocks[j].state == block_info::requested) chr = '-';
else chr = ' ';
#endif
snprintf(str, sizeof(str), "%s%c", color, chr);
out += str;
}
#ifdef ANSI_TERMINAL_COLORS
out += esc("0");
#endif
char const* piece_state[4] = {"", " slow", " medium", " fast"};
snprintf(str, sizeof(str), "]%s", piece_state[i->piece_state]);
out += str;
if (cp)
{
snprintf(str, sizeof(str), " %scache age: %-.1f"
, i->piece_state > 0?"| ":""
, total_milliseconds(time_now() - cp->last_use) / 1000.f);
out += str;
}
out += "\n";
}
for (std::vector<cached_piece_info>::iterator i = pieces.begin()
, end(pieces.end()); i != end; ++i)
{
if (i->kind != cached_piece_info::read_cache) continue;
snprintf(str, sizeof(str), "%5d: [", i->piece);
out += str;
for (std::vector<bool>::iterator k = i->blocks.begin()
, end(i->blocks.end()); k != end; ++k)
{
char const* color = "";
char chr = ' ';
#ifdef ANSI_TERMINAL_COLORS
color = *k?esc("33;7"):esc("0");
#else
chr = *k?'#':' ';
#endif
snprintf(str, sizeof(str), "%s%c", color, chr);
out += str;
}
#ifdef ANSI_TERMINAL_COLORS
out += esc("0");
#endif
snprintf(str, sizeof(str), "] cache age: %-.1f\n"
, total_milliseconds(time_now() - i->last_use) / 1000.f);
out += str;
}
out += "___________________________________\n";
}
if (print_file_progress
&& s.state != torrent_status::seeding
&& h.has_metadata())
{
std::vector<size_type> file_progress;
h.file_progress(file_progress);
torrent_info const& info = h.get_torrent_info();
for (int i = 0; i < info.num_files(); ++i)
{
bool pad_file = info.file_at(i).pad_file;
if (!show_pad_files && pad_file) continue;
int progress = info.file_at(i).size > 0
?file_progress[i] * 1000 / info.file_at(i).size:1000;
char const* color = (file_progress[i] == info.file_at(i).size)
?"32":"33";
snprintf(str, sizeof(str), "%s %s %-5.2f%% %s %s%s\n",
progress_bar(progress, 100, color).c_str()
, pad_file?esc("34"):""
, progress / 10.f
, add_suffix(file_progress[i]).c_str()
, filename(info.file_at(i).path).c_str()
, pad_file?esc("0"):"");
out += str;
}
out += "___________________________________\n";
}
}
if (print_log)
{
for (std::deque<std::string>::iterator i = events.begin();
i != events.end(); ++i)
{
out += "\n";
out += *i;
}
}
clear_home();
puts(out.c_str());
if (!monitor_dir.empty()
&& next_dir_scan < time_now())
{
scan_dir(monitor_dir, ses, handles, preferred_ratio
, allocation_mode, save_path, torrent_upload_limit
, torrent_download_limit);
next_dir_scan = time_now() + seconds(poll_interval);
}
}
printf("saving session state\n");
{
entry session_state = ses.state();
std::vector<char> out;
bencode(std::back_inserter(out), session_state);
save_file(".ses_state", out);
}
#ifndef TORRENT_DISABLE_DHT
printf("saving DHT state\n");
entry dht_state = ses.dht_state();
std::vector<char> out;
bencode(std::back_inserter(out), dht_state);
save_file(".dht_state", out);
#endif
printf("closing session");
return 0;
}
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