premiere-libtorrent/test/test_fast_extension.cpp

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#include "test.hpp"
#include "setup_transfer.hpp"
#include "libtorrent/socket.hpp"
#include "libtorrent/io.hpp"
#include <cstring>
#include <boost/bind.hpp>
using namespace libtorrent;
int read_message(stream_socket& s, char* buffer)
{
using namespace libtorrent::detail;
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error_code ec;
asio::read(s, asio::buffer(buffer, 4), asio::transfer_all(), ec);
if (ec)
{
std::cout << ec.message() << std::endl;
exit(1);
}
char* ptr = buffer;
int length = read_int32(ptr);
asio::read(s, asio::buffer(buffer, length), asio::transfer_all(), ec);
if (ec)
{
std::cout << ec.message() << std::endl;
exit(1);
}
return length;
}
char const* message_name[] = {"choke", "unchoke", "interested", "not_interested"
, "have", "bitfield", "request", "piece", "cancel", "dht_port", "", "", ""
, "suggest_piece", "have_all", "have_none", "reject_request", "allowed_fast"};
void send_allow_fast(stream_socket& s, int piece)
{
std::cout << "send allow fast: " << piece << std::endl;
using namespace libtorrent::detail;
char msg[] = "\0\0\0\x05\x11\0\0\0\0";
char* ptr = msg + 5;
write_int32(piece, ptr);
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error_code ec;
asio::write(s, asio::buffer(msg, 9), asio::transfer_all(), ec);
if (ec)
{
std::cout << ec.message() << std::endl;
exit(1);
}
}
void send_suggest_piece(stream_socket& s, int piece)
{
std::cout << "send suggest piece: " << piece << std::endl;
using namespace libtorrent::detail;
char msg[] = "\0\0\0\x05\x0d\0\0\0\0";
char* ptr = msg + 5;
write_int32(piece, ptr);
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error_code ec;
asio::write(s, asio::buffer(msg, 9), asio::transfer_all(), ec);
if (ec)
{
std::cout << ec.message() << std::endl;
exit(1);
}
}
void send_unchoke(stream_socket& s)
{
std::cout << "send unchoke" << std::endl;
char msg[] = "\0\0\0\x01\x01";
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error_code ec;
asio::write(s, asio::buffer(msg, 5), asio::transfer_all(), ec);
if (ec)
{
std::cout << ec.message() << std::endl;
exit(1);
}
}
void do_handshake(stream_socket& s, sha1_hash const& ih, char* buffer)
{
char handshake[] = "\x13" "BitTorrent protocol\0\0\0\0\0\0\0\x04"
" " // space for info-hash
"aaaaaaaaaaaaaaaaaaaa" // peer-id
"\0\0\0\x01\x0e"; // have_all
std::cout << "send handshake" << std::endl;
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error_code ec;
std::memcpy(handshake + 28, ih.begin(), 20);
asio::write(s, asio::buffer(handshake, sizeof(handshake) - 1), asio::transfer_all(), ec);
if (ec)
{
std::cout << ec.message() << std::endl;
exit(1);
}
// read handshake
asio::read(s, asio::buffer(buffer, 68), asio::transfer_all(), ec);
if (ec)
{
std::cout << ec.message() << std::endl;
exit(1);
}
std::cout << "received handshake" << std::endl;
TEST_CHECK(buffer[0] == 19);
TEST_CHECK(std::memcmp(buffer + 1, "BitTorrent protocol", 19) == 0);
char* extensions = buffer + 20;
// check for fast extension support
TEST_CHECK(extensions[7] & 0x4);
#ifndef TORRENT_DISABLE_EXTENSIONS
// check for extension protocol support
TEST_CHECK(extensions[5] & 0x10);
#endif
#ifndef TORRENT_DISABLE_DHT
// check for DHT support
TEST_CHECK(extensions[7] & 0x1);
#endif
TEST_CHECK(std::memcmp(buffer + 28, ih.begin(), 20) == 0);
}
// makes sure that pieces that are allowed and then
// rejected aren't requested again
void test_reject_fast()
{
boost::intrusive_ptr<torrent_info> t = ::create_torrent();
sha1_hash ih = t->info_hash();
session ses1(fingerprint("LT", 0, 1, 0, 0), std::make_pair(48900, 49000));
ses1.add_torrent(t, "./tmp1");
test_sleep(2000);
io_service ios;
stream_socket s(ios);
s.connect(tcp::endpoint(address::from_string("127.0.0.1"), ses1.listen_port()));
char recv_buffer[1000];
do_handshake(s, ih, recv_buffer);
std::vector<int> allowed_fast;
allowed_fast.push_back(0);
allowed_fast.push_back(1);
allowed_fast.push_back(2);
allowed_fast.push_back(3);
std::for_each(allowed_fast.begin(), allowed_fast.end()
, bind(&send_allow_fast, boost::ref(s), _1));
while (!allowed_fast.empty())
{
read_message(s, recv_buffer);
int msg = recv_buffer[0];
if (msg >= 0 && msg < int(sizeof(message_name)/sizeof(message_name[0])))
std::cerr << message_name[msg] << std::endl;
else
std::cerr << msg << std::endl;
if (recv_buffer[0] != 0x6) continue;
using namespace libtorrent::detail;
char* ptr = recv_buffer + 1;
int piece = read_int32(ptr);
std::vector<int>::iterator i = std::find(allowed_fast.begin()
, allowed_fast.end(), piece);
TEST_CHECK(i != allowed_fast.end());
if (i != allowed_fast.end())
allowed_fast.erase(i);
// send reject request
recv_buffer[0] = 0x10;
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error_code ec;
asio::write(s, asio::buffer("\0\0\0\x0d", 4), asio::transfer_all(), ec);
if (ec)
{
std::cout << ec.message() << std::endl;
exit(1);
}
asio::write(s, asio::buffer(recv_buffer, 13), asio::transfer_all(), ec);
std::cout << ec.message() << std::endl;
if (ec)
{
std::cout << ec.message() << std::endl;
exit(1);
}
}
}
void test_respect_suggest()
{
boost::intrusive_ptr<torrent_info> t = ::create_torrent();
sha1_hash ih = t->info_hash();
session ses1(fingerprint("LT", 0, 1, 0, 0), std::make_pair(48900, 49000));
ses1.add_torrent(t, "./tmp1");
test_sleep(2000);
io_service ios;
stream_socket s(ios);
s.connect(tcp::endpoint(address::from_string("127.0.0.1"), ses1.listen_port()));
char recv_buffer[1000];
do_handshake(s, ih, recv_buffer);
std::vector<int> suggested;
suggested.push_back(0);
suggested.push_back(1);
suggested.push_back(2);
suggested.push_back(3);
std::for_each(suggested.begin(), suggested.end()
, bind(&send_suggest_piece, boost::ref(s), _1));
send_unchoke(s);
int fail_counter = 100;
while (!suggested.empty() && fail_counter > 0)
{
read_message(s, recv_buffer);
std::cerr << "msg: ";
int msg = recv_buffer[0];
if (msg >= 0 && msg < int(sizeof(message_name)/sizeof(message_name[0])))
std::cerr << message_name[msg] << std::endl;
else
std::cerr << msg << std::endl;
fail_counter--;
if (recv_buffer[0] != 0x6) continue;
using namespace libtorrent::detail;
char* ptr = recv_buffer + 1;
int piece = read_int32(ptr);
std::vector<int>::iterator i = std::find(suggested.begin()
, suggested.end(), piece);
TEST_CHECK(i != suggested.end());
if (i != suggested.end())
suggested.erase(i);
// send reject request
recv_buffer[0] = 0x10;
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error_code ec;
asio::write(s, asio::buffer("\0\0\0\x0d", 4), asio::transfer_all(), ec);
if (ec)
{
std::cout << ec.message() << std::endl;
exit(1);
}
asio::write(s, asio::buffer(recv_buffer, 13), asio::transfer_all(), ec);
if (ec)
{
std::cout << ec.message() << std::endl;
exit(1);
}
}
TEST_CHECK(fail_counter > 0);
}
int test_main()
{
test_reject_fast();
test_respect_suggest();
return 0;
}