add connection tester
This commit is contained in:
Arvid Norberg
parent
82b49b541e
commit
3174f050f9
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@ -1,6 +1,6 @@
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/*
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Copyright (c) 2010, Arvid Norberg
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Copyright (c) 2008, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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@ -30,77 +30,194 @@ POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdlib.h>
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#include "libtorrent/entry.hpp"
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#include "libtorrent/bencode.hpp"
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#include "libtorrent/session.hpp"
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#include "libtorrent/storage_defs.hpp"
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#include "libtorrent/peer_id.hpp"
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#include "libtorrent/io_service.hpp"
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#include "libtorrent/socket.hpp"
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#include "libtorrent/address.hpp"
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#include "libtorrent/error_code.hpp"
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#include "libtorrent/io.hpp"
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#include "libtorrent/torrent_info.hpp"
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#include "libtorrent/thread.hpp"
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#include <cstring>
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#include <boost/bind.hpp>
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#include <iostream>
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int main(int argc, char* argv[])
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using namespace libtorrent;
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using namespace libtorrent::detail; // for write_* and read_*
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int read_message(stream_socket& s, char* buffer)
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{
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using namespace libtorrent;
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if (argc != 5)
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{
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fputs("usage: ./connection_tester torrent-file IP port num-connections\n"
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"to stop the client, press return.\n", stderr);
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return 1;
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}
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tcp::endpoint ip(address::from_string(argv[2]), atoi(argv[3]));
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int num_connections = atoi(argv[4]);
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std::list<session*> ses_list;
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add_torrent_params p;
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p.save_path = "./";
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using namespace libtorrent::detail;
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error_code ec;
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p.ti = new torrent_info(argv[1], ec);
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p.storage = &disabled_storage_constructor;
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libtorrent::asio::read(s, libtorrent::asio::buffer(buffer, 4)
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, libtorrent::asio::transfer_all(), ec);
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if (ec)
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{
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fprintf(stderr, "ERROR RECEIVE MESSAGE PREFIX: %s\n", ec.message().c_str());
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return -1;
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}
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char* ptr = buffer;
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int length = read_int32(ptr);
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libtorrent::asio::read(s, libtorrent::asio::buffer(buffer, length)
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, libtorrent::asio::transfer_all(), ec);
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if (ec)
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{
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fprintf(stderr, "ERROR RECEIVE MESSAGE: %s\n", ec.message().c_str());
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return -1;
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}
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return length;
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}
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void do_handshake(stream_socket& s, sha1_hash const& ih, char* buffer)
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{
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char handshake[] = "\x13" "BitTorrent protocol\0\0\0\0\0\0\0\x04"
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" " // space for info-hash
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"aaaaaaaaaaaaaaaaaaaa"; // peer-id
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error_code ec;
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std::memcpy(handshake + 28, ih.begin(), 20);
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std::generate(handshake + 48, handshake + 68, &rand);
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libtorrent::asio::write(s, libtorrent::asio::buffer(handshake, sizeof(handshake) - 1)
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, libtorrent::asio::transfer_all(), ec);
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if (ec)
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{
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fprintf(stderr, "%s\n", ec.message().c_str());
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fprintf(stderr, "ERROR SEND HANDSHAKE: %s\n", ec.message().c_str());
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return;
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}
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// read handshake
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libtorrent::asio::read(s, libtorrent::asio::buffer(buffer, 68)
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, libtorrent::asio::transfer_all(), ec);
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if (ec)
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{
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fprintf(stderr, "ERROR RECEIVE HANDSHAKE: %s\n", ec.message().c_str());
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return;
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}
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}
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void send_interested(stream_socket& s)
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{
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char msg[] = "\0\0\0\x01\x02";
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error_code ec;
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libtorrent::asio::write(s, libtorrent::asio::buffer(msg, 5)
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, libtorrent::asio::transfer_all(), ec);
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if (ec)
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{
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fprintf(stderr, "ERROR SEND INTERESTED: %s\n", ec.message().c_str());
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return;
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}
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}
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void send_request(stream_socket& s, int piece, int block)
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{
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char msg[] = "\0\0\0\xd\x06"
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" " // piece
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" " // offset
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" "; // length
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char* ptr = msg + 5;
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write_uint32(piece, ptr);
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write_uint32(block * 16 * 1024, ptr);
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write_uint32(16 * 1024, ptr);
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error_code ec;
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libtorrent::asio::write(s, libtorrent::asio::buffer(msg, sizeof(msg)-1)
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, libtorrent::asio::transfer_all(), ec);
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if (ec)
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{
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fprintf(stderr, "ERROR SEND REQUEST: %s\n", ec.message().c_str());
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return;
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}
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}
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// makes sure that pieces that are allowed and then
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// rejected aren't requested again
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void requester_thread(torrent_info const* ti, tcp::endpoint const* ep, io_service* ios)
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{
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sha1_hash const& ih = ti->info_hash();
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stream_socket s(*ios);
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error_code ec;
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s.connect(*ep, ec);
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if (ec)
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{
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fprintf(stderr, "ERROR CONNECT: %s\n", ec.message().c_str());
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return;
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}
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char recv_buffer[16 * 1024 + 1000];
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do_handshake(s, ih, recv_buffer);
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send_interested(s);
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// build a list of all pieces and request them all!
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std::vector<int> pieces(ti->num_pieces());
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for (int i = 0; i < pieces.size(); ++i)
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pieces[i] = i;
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std::random_shuffle(pieces.begin(), pieces.end());
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int block = 0;
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int blocks_per_piece = ti->piece_length() / 16 / 1024;
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int outstanding_reqs = 0;
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while (true)
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{
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while (outstanding_reqs < 16)
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{
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send_request(s, pieces.back(), block++);
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++outstanding_reqs;
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if (block == blocks_per_piece)
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{
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block = 0;
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pieces.pop_back();
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}
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if (pieces.empty())
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{
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fprintf(stderr, "COMPLETED DOWNLOAD\n");
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return;
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}
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}
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int length = read_message(s, recv_buffer);
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if (length == -1) return;
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int msg = recv_buffer[0];
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if (msg == 7) --outstanding_reqs;
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}
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}
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int main(int argc, char const* argv[])
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{
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if (argc < 5)
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{
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fprintf(stderr, "usage: connection_tester number-of-connections destination-ip destination-port torrent-file\n");
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return 1;
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}
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fprintf(stderr, "starting %d connections\n", num_connections);
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int num_connections = atoi(argv[1]);
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address_v4 addr = address_v4::from_string(argv[2]);
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int port = atoi(argv[3]);
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tcp::endpoint ep(addr, port);
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error_code ec;
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torrent_info ti(argv[4], ec);
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if (ec)
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{
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fprintf(stderr, "ERROR LOADING .TORRENT: %s\n", ec.message().c_str());
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return 1;
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}
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std::list<thread*> threads;
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io_service ios;
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for (int i = 0; i < num_connections; ++i)
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{
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session* s = new session(fingerprint("LT", 0, 0, 0, 0), 0);
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s->listen_on(std::make_pair(2000 + i*5, 200 + i*5 + 4));
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session_settings set;
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set.disable_hash_checks = true;
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s->set_settings(set);
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torrent_handle h = s->add_torrent(p, ec);
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if (ec)
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{
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fprintf(stderr, "%s\n", ec.message().c_str());
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return 1;
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}
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h.connect_peer(ip);
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ses_list.push_back(s);
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threads.push_back(new thread(boost::bind(&requester_thread, &ti, &ep, &ios)));
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libtorrent::sleep(10);
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}
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// wait for the user to end
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char a;
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scanf("%c", &a);
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fprintf(stderr, "shutting down\n");
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// shut down all sessions in parallel
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std::list<session_proxy> shutdown;
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for (std::list<session*>::iterator i = ses_list.begin(),
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end(ses_list.end()); i != end; ++i)
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shutdown.push_back((*i)->abort());
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// wait for all session to complete shutdown
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for (std::list<session*>::iterator i = ses_list.begin(),
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end(ses_list.end()); i != end; ++i)
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delete *i;
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for (int i = 0; i < num_connections; ++i)
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{
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threads.back()->join();
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delete threads.back();
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threads.pop_back();
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}
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return 0;
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}
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