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Merge pull request #6146 

70c9cd3c Change to Tx diffusion (Dandelion++ fluff) instead of flooding (Lee Clagett)
This commit is contained in:
Alexander Blair 2020-01-24 20:06:34 -08:00
parent 5558919e56 70c9cd3c9c
commit d1b08c00cf
No known key found for this signature in database
GPG Key ID: C64552D877C32479
15 changed files with 280 additions and 97 deletions
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6
src/blockchain_db/blockchain_db.cpp
View File

@ -67,7 +67,7 @@ bool matches_category(relay_method method, relay_category category) noexcept
case relay_method::local:
return false;
case relay_method::block:
case relay_method::flood:
case relay_method::fluff:
return true;
case relay_method::none:
break;
@ -90,7 +90,7 @@ void txpool_tx_meta_t::set_relay_method(relay_method method) noexcept
is_local = 1;
break;
default:
case relay_method::flood:
case relay_method::fluff:
break;
case relay_method::block:
kept_by_block = 1;
@ -106,7 +106,7 @@ relay_method txpool_tx_meta_t::get_relay_method() const noexcept
return relay_method::none;
if (is_local)
return relay_method::local;
return relay_method::flood;
return relay_method::fluff;
}
const command_line::arg_descriptor<std::string> arg_db_sync_mode = {

2
src/blockchain_db/blockchain_db.h
View File

@ -108,7 +108,7 @@ extern const command_line::arg_descriptor<bool, false> arg_db_salvage;
enum class relay_category : uint8_t
{
broadcasted = 0,//!< Public txes received via block/flooding/fluff
broadcasted = 0,//!< Public txes received via block/fluff
relayable, //!< Every tx not marked `relay_method::none`
legacy, //!< `relay_category::broadcasted` + `relay_method::none` for rpc relay requests or historical reasons
all //!< Everything in the db

3
src/cryptonote_config.h
View File

@ -101,6 +101,9 @@
#define CRYPTONOTE_MEMPOOL_TX_LIVETIME (86400*3) //seconds, three days
#define CRYPTONOTE_MEMPOOL_TX_FROM_ALT_BLOCK_LIVETIME 604800 //seconds, one week
#define CRYPTONOTE_DANDELIONPP_FLUSH_AVERAGE 5 // seconds
// see src/cryptonote_protocol/levin_notify.cpp
#define CRYPTONOTE_NOISE_MIN_EPOCH 5 // minutes
#define CRYPTONOTE_NOISE_EPOCH_RANGE 30 // seconds

12
src/cryptonote_core/cryptonote_core.cpp
View File

@ -174,11 +174,6 @@ namespace cryptonote
, "Relay blocks as normal blocks"
, false
};
static const command_line::arg_descriptor<bool> arg_pad_transactions = {
"pad-transactions"
, "Pad relayed transactions to help defend against traffic volume analysis"
, false
};
static const command_line::arg_descriptor<size_t> arg_max_txpool_weight = {
"max-txpool-weight"
, "Set maximum txpool weight in bytes."
@ -235,8 +230,7 @@ namespace cryptonote
m_disable_dns_checkpoints(false),
m_update_download(0),
m_nettype(UNDEFINED),
m_update_available(false),
m_pad_transactions(false)
m_update_available(false)
{
m_checkpoints_updating.clear();
set_cryptonote_protocol(pprotocol);
@ -333,7 +327,6 @@ namespace cryptonote
command_line::add_arg(desc, arg_block_download_max_size);
command_line::add_arg(desc, arg_sync_pruned_blocks);
command_line::add_arg(desc, arg_max_txpool_weight);
command_line::add_arg(desc, arg_pad_transactions);
command_line::add_arg(desc, arg_block_notify);
command_line::add_arg(desc, arg_prune_blockchain);
command_line::add_arg(desc, arg_reorg_notify);
@ -376,7 +369,6 @@ namespace cryptonote
set_enforce_dns_checkpoints(command_line::get_arg(vm, arg_dns_checkpoints));
test_drop_download_height(command_line::get_arg(vm, arg_test_drop_download_height));
m_fluffy_blocks_enabled = !get_arg(vm, arg_no_fluffy_blocks);
m_pad_transactions = get_arg(vm, arg_pad_transactions);
m_offline = get_arg(vm, arg_offline);
m_disable_dns_checkpoints = get_arg(vm, arg_disable_dns_checkpoints);
if (!command_line::is_arg_defaulted(vm, arg_fluffy_blocks))
@ -1295,7 +1287,7 @@ namespace cryptonote
private_req.txs.push_back(std::move(std::get<1>(tx)));
break;
case relay_method::block:
case relay_method::flood:
case relay_method::fluff:
public_req.txs.push_back(std::move(std::get<1>(tx)));
break;
}

8
src/cryptonote_core/cryptonote_core.h
View File

@ -791,13 +791,6 @@ namespace cryptonote
*/
bool fluffy_blocks_enabled() const { return m_fluffy_blocks_enabled; }
/**
* @brief get whether transaction relay should be padded
*
* @return whether transaction relay should be padded
*/
bool pad_transactions() const { return m_pad_transactions; }
/**
* @brief check a set of hashes against the precompiled hash set
*
@ -1102,7 +1095,6 @@ namespace cryptonote
bool m_fluffy_blocks_enabled;
bool m_offline;
bool m_pad_transactions;
std::shared_ptr<tools::Notify> m_block_rate_notify;
};

4
src/cryptonote_protocol/cryptonote_protocol_handler.inl
View File

@ -910,7 +910,7 @@ namespace cryptonote
for (size_t i = 0; i < arg.txs.size(); ++i)
{
cryptonote::tx_verification_context tvc{};
m_core.handle_incoming_tx({arg.txs[i], crypto::null_hash}, tvc, relay_method::flood, true);
m_core.handle_incoming_tx({arg.txs[i], crypto::null_hash}, tvc, relay_method::fluff, true);
if(tvc.m_verifivation_failed)
{
LOG_PRINT_CCONTEXT_L1("Tx verification failed, dropping connection");
@ -2351,7 +2351,7 @@ skip:
local mempool before doing the relay. The code was already updating the
DB twice on received transactions - it is difficult to workaround this
due to the internal design. */
return m_p2p->send_txs(std::move(arg.txs), zone, source, m_core, m_core.pad_transactions()) != epee::net_utils::zone::invalid;
return m_p2p->send_txs(std::move(arg.txs), zone, source, m_core) != epee::net_utils::zone::invalid;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>

2
src/cryptonote_protocol/enums.h
View File

@ -38,6 +38,6 @@ namespace cryptonote
none = 0, //!< Received via RPC with `do_not_relay` set
local, //!< Received via RPC; trying to send over i2p/tor, etc.
block, //!< Received in block, takes precedence over others
flood //!< Received/sent over public networks
fluff //!< Received/sent over public networks
};
}

192
src/cryptonote_protocol/levin_notify.cpp
View File

@ -33,6 +33,7 @@
#include <chrono>
#include <deque>
#include <stdexcept>
#include <utility>
#include "common/expect.h"
#include "common/varint.h"
@ -57,6 +58,37 @@ namespace levin
constexpr const std::chrono::seconds noise_min_delay{CRYPTONOTE_NOISE_MIN_DELAY};
constexpr const std::chrono::seconds noise_delay_range{CRYPTONOTE_NOISE_DELAY_RANGE};
/* A custom duration is used for the poisson distribution because of the
variance. If 5 seconds is given to `std::poisson_distribution`, 95% of
the values fall between 1-9s in 1s increments (not granular enough). If
5000 milliseconds is given, 95% of the values fall between 4859ms-5141ms
in 1ms increments (not enough time variance). Providing 20 quarter
seconds yields 95% of the values between 3s-7.25s in 1/4s increments. */
using fluff_stepsize = std::chrono::duration<std::chrono::milliseconds::rep, std::ratio<1, 4>>;
constexpr const std::chrono::seconds fluff_average_in{CRYPTONOTE_DANDELIONPP_FLUSH_AVERAGE};
/*! Bitcoin Core is using 1/2 average seconds for outgoing connections
compared to incoming. The thinking is that the user controls outgoing
connections (Dandelion++ makes similar assumptions in its stem
algorithm). The randomization yields 95% values between 1s-4s in
1/4s increments. */
constexpr const fluff_stepsize fluff_average_out{fluff_stepsize{fluff_average_in} / 2};
class random_poisson
{
std::poisson_distribution<fluff_stepsize::rep> dist;
public:
explicit random_poisson(fluff_stepsize average)
: dist(average.count() < 0 ? 0 : average.count())
{}
fluff_stepsize operator()()
{
crypto::random_device rand{};
return fluff_stepsize{dist(rand)};
}
};
/*! Select a randomized duration from 0 to `range`. The precision will be to
the systems `steady_clock`. As an example, supplying 3 seconds to this
function will select a duration from [0, 3] seconds, and the increments
@ -129,6 +161,12 @@ namespace levin
return fullBlob;
}
bool make_payload_send_txs(connections& p2p, std::vector<blobdata>&& txs, const boost::uuids::uuid& destination, const bool pad)
{
const cryptonote::blobdata blob = make_tx_payload(std::move(txs), pad);
return p2p.notify(NOTIFY_NEW_TRANSACTIONS::ID, epee::strspan<std::uint8_t>(blob), destination);
}
/* The current design uses `asio::strand`s. The documentation isn't as clear
as it should be - a `strand` has an internal `mutex` and `bool`. The
`mutex` synchronizes thread access and the `bool` is set when a thread is
@ -187,15 +225,18 @@ namespace levin
{
struct zone
{
explicit zone(boost::asio::io_service& io_service, std::shared_ptr<connections> p2p, epee::byte_slice noise_in, bool is_public)
explicit zone(boost::asio::io_service& io_service, std::shared_ptr<connections> p2p, epee::byte_slice noise_in, bool is_public, bool pad_txs)
: p2p(std::move(p2p)),
noise(std::move(noise_in)),
next_epoch(io_service),
flush_txs(io_service),
strand(io_service),
map(),
channels(),
flush_time(std::chrono::steady_clock::time_point::max()),
connection_count(0),
is_public(is_public)
is_public(is_public),
pad_txs(pad_txs)
{
for (std::size_t count = 0; !noise.empty() && count < CRYPTONOTE_NOISE_CHANNELS; ++count)
channels.emplace_back(io_service);
@ -204,11 +245,14 @@ namespace levin
const std::shared_ptr<connections> p2p;
const epee::byte_slice noise; //!< `!empty()` means zone is using noise channels
boost::asio::steady_timer next_epoch;
boost::asio::steady_timer flush_txs;
boost::asio::io_service::strand strand;
net::dandelionpp::connection_map map;//!< Tracks outgoing uuid's for noise channels or Dandelion++ stems
std::deque<noise_channel> channels; //!< Never touch after init; only update elements on `noise_channel.strand`
std::chrono::steady_clock::time_point flush_time; //!< Next expected Dandelion++ fluff flush
std::atomic<std::size_t> connection_count; //!< Only update in strand, can be read at any time
const bool is_public; //!< Zone is public ipv4/ipv6 connections
const bool pad_txs; //!< Pad txs to the next boundary for privacy
};
} // detail
@ -245,49 +289,112 @@ namespace levin
}
};
//! Sends a message to every active connection
class flood_notify
//! Sends txs on connections with expired timers, and queues callback for next timer expiration (if any).
struct fluff_flush
{
std::shared_ptr<detail::zone> zone_;
epee::byte_slice message_; // Requires manual copy
boost::uuids::uuid source_;
std::chrono::steady_clock::time_point flush_time_;
public:
explicit flood_notify(std::shared_ptr<detail::zone> zone, epee::byte_slice message, const boost::uuids::uuid& source)
: zone_(std::move(zone)), message_(message.clone()), source_(source)
{}
static void queue(std::shared_ptr<detail::zone> zone, const std::chrono::steady_clock::time_point flush_time)
{
assert(zone != nullptr);
assert(zone->strand.running_in_this_thread());
flood_notify(flood_notify&&) = default;
flood_notify(const flood_notify& source)
: zone_(source.zone_), message_(source.message_.clone()), source_(source.source_)
{}
detail::zone& this_zone = *zone;
this_zone.flush_time = flush_time;
this_zone.flush_txs.expires_at(flush_time);
this_zone.flush_txs.async_wait(this_zone.strand.wrap(fluff_flush{std::move(zone), flush_time}));
}
void operator()() const
void operator()(const boost::system::error_code error)
{
if (!zone_ || !zone_->p2p)
return;
assert(zone_->strand.running_in_this_thread());
/* The foreach should be quick, but then it iterates and acquires the
same lock for every connection. So do in a strand because two threads
will ping-pong each other with cacheline invalidations. Revisit if
algorithm changes or the locking strategy within the levin config
class changes. */
const bool timer_error = bool(error);
if (timer_error)
{
if (error != boost::system::errc::operation_canceled)
throw boost::system::system_error{error, "fluff_flush timer failed"};
std::vector<boost::uuids::uuid> connections;
connections.reserve(connection_id_reserve_size);
zone_->p2p->foreach_connection([this, &connections] (detail::p2p_context& context) {
/* Only send to outgoing connections when "flooding" over i2p/tor.
Otherwise this makes the tx linkable to a hidden service address,
making things linkable across connections. */
if (this->source_ != context.m_connection_id && (this->zone_->is_public || !context.m_is_income))
connections.emplace_back(context.m_connection_id);
// new timer canceled this one set in future
if (zone_->flush_time < flush_time_)
return;
}
const auto now = std::chrono::steady_clock::now();
auto next_flush = std::chrono::steady_clock::time_point::max();
std::vector<std::pair<std::vector<blobdata>, boost::uuids::uuid>> connections{};
zone_->p2p->foreach_connection([timer_error, now, &next_flush, &connections] (detail::p2p_context& context)
{
if (!context.fluff_txs.empty())
{
if (context.flush_time <= now || timer_error) // flush on canceled timer
{
context.flush_time = std::chrono::steady_clock::time_point::max();
connections.emplace_back(std::move(context.fluff_txs), context.m_connection_id);
context.fluff_txs.clear();
}
else // not flushing yet
next_flush = std::min(next_flush, context.flush_time);
}
else // nothing to flush
context.flush_time = std::chrono::steady_clock::time_point::max();
return true;
});
for (const boost::uuids::uuid& connection : connections)
zone_->p2p->send(message_.clone(), connection);
for (auto& connection : connections)
make_payload_send_txs(*zone_->p2p, std::move(connection.first), connection.second, zone_->pad_txs);
if (next_flush != std::chrono::steady_clock::time_point::max())
fluff_flush::queue(std::move(zone_), next_flush);
else
zone_->flush_time = next_flush; // signal that no timer is set
}
};
/*! The "fluff" portion of the Dandelion++ algorithm. Every tx is queued
per-connection and flushed with a randomized poisson timer. This
implementation only has one system timer per-zone, and instead tracks
the lowest flush time. */
struct fluff_notify
{
std::shared_ptr<detail::zone> zone_;
std::vector<blobdata> txs_;
boost::uuids::uuid source_;
void operator()()
{
if (!zone_ || !zone_->p2p || txs_.empty())
return;
assert(zone_->strand.running_in_this_thread());
const auto now = std::chrono::steady_clock::now();
auto next_flush = std::chrono::steady_clock::time_point::max();
random_poisson in_duration(fluff_average_in);
random_poisson out_duration(fluff_average_out);
zone_->p2p->foreach_connection([this, now, &in_duration, &out_duration, &next_flush] (detail::p2p_context& context)
{
if (this->source_ != context.m_connection_id && (this->zone_->is_public || !context.m_is_income))
{
if (context.fluff_txs.empty())
context.flush_time = now + (context.m_is_income ? in_duration() : out_duration());
next_flush = std::min(next_flush, context.flush_time);
context.fluff_txs.reserve(context.fluff_txs.size() + this->txs_.size());
for (const blobdata& tx : this->txs_)
context.fluff_txs.push_back(tx); // must copy instead of move (multiple conns)
}
return true;
});
if (next_flush < zone_->flush_time)
fluff_flush::queue(std::move(zone_), next_flush);
}
};
@ -451,7 +558,7 @@ namespace levin
}
};
//! Prepares connections for new channel epoch and sets timer for next epoch
//! Prepares connections for new channel/dandelionpp epoch and sets timer for next epoch
struct start_epoch
{
// Variables allow for Dandelion++ extension
@ -481,8 +588,8 @@ namespace levin
};
} // anonymous
notify::notify(boost::asio::io_service& service, std::shared_ptr<connections> p2p, epee::byte_slice noise, bool is_public)
: zone_(std::make_shared<detail::zone>(service, std::move(p2p), std::move(noise), is_public))
notify::notify(boost::asio::io_service& service, std::shared_ptr<connections> p2p, epee::byte_slice noise, const bool is_public, const bool pad_txs)
: zone_(std::make_shared<detail::zone>(service, std::move(p2p), std::move(noise), is_public, pad_txs))
{
if (!zone_->p2p)
throw std::logic_error{"cryptonote::levin::notify cannot have nullptr p2p argument"};
@ -533,8 +640,18 @@ namespace levin
channel.next_noise.cancel();
}
bool notify::send_txs(std::vector<blobdata> txs, const boost::uuids::uuid& source, const bool pad_txs)
void notify::run_fluff()
{
if (!zone_)
return;
zone_->flush_txs.cancel();
}
bool notify::send_txs(std::vector<blobdata> txs, const boost::uuids::uuid& source)
{
if (txs.empty())
return true;
if (!zone_)
return false;
@ -565,12 +682,7 @@ namespace levin
}
else
{
const std::string payload = make_tx_payload(std::move(txs), pad_txs);
epee::byte_slice message =
epee::levin::make_notify(NOTIFY_NEW_TRANSACTIONS::ID, epee::strspan<std::uint8_t>(payload));
// traditional monero send technique
zone_->strand.dispatch(flood_notify{zone_, std::move(message), source});
zone_->strand.dispatch(fluff_notify{zone_, std::move(txs), source});
}
return true;

12
src/cryptonote_protocol/levin_notify.h
View File

@ -82,7 +82,7 @@ namespace levin
{}
//! Construct an instance with available notification `zones`.
explicit notify(boost::asio::io_service& service, std::shared_ptr<connections> p2p, epee::byte_slice noise, bool is_public);
explicit notify(boost::asio::io_service& service, std::shared_ptr<connections> p2p, epee::byte_slice noise, bool is_public, bool pad_txs);
notify(const notify&) = delete;
notify(notify&&) = default;
@ -104,11 +104,14 @@ namespace levin
//! Run the logic for the next stem timeout imemdiately. Only use in testing.
void run_stems();
//! Run the logic for flushing all Dandelion++ fluff queued txs. Only use in testing.
void run_fluff();
/*! Send txs using `cryptonote_protocol_defs.h` payload format wrapped in a
levin header. The message will be sent in a "discreet" manner if
enabled - if `!noise.empty()` then the `command`/`payload` will be
queued to send at the next available noise interval. Otherwise, a
standard Monero flood notification will be used.
Dandelion++ fluff algorithm will be used.
\note Eventually Dandelion++ stem sending will be used here when
enabled.
@ -117,12 +120,9 @@ namespace levin
\param source The source of the notification. `is_nil()` indicates this
node is the source. Dandelion++ will use this to map a source to a
particular stem.
\param pad_txs A request to pad txs to help conceal origin via
statistical analysis. Ignored if noise was enabled during
construction.
\return True iff the notification is queued for sending. */
bool send_txs(std::vector<blobdata> txs, const boost::uuids::uuid& source, bool pad_txs);
bool send_txs(std::vector<blobdata> txs, const boost::uuids::uuid& source);
};
} // levin
} // net

4
src/p2p/net_node.cpp
View File

@ -161,6 +161,10 @@ namespace nodetool
const command_line::arg_descriptor<int64_t> arg_limit_rate_down = {"limit-rate-down", "set limit-rate-down [kB/s]", P2P_DEFAULT_LIMIT_RATE_DOWN};
const command_line::arg_descriptor<int64_t> arg_limit_rate = {"limit-rate", "set limit-rate [kB/s]", -1};
const command_line::arg_descriptor<bool> arg_pad_transactions = {
"pad-transactions", "Pad relayed transactions to help defend against traffic volume analysis", false
};
boost::optional<std::vector<proxy>> get_proxies(boost::program_options::variables_map const& vm)
{
namespace ip = boost::asio::ip;

14
src/p2p/net_node.h
View File

@ -38,6 +38,7 @@
#include <boost/program_options/options_description.hpp>
#include <boost/program_options/variables_map.hpp>
#include <boost/uuid/uuid.hpp>
#include <chrono>
#include <functional>
#include <utility>
#include <vector>
@ -109,8 +110,16 @@ namespace nodetool
template<class base_type>
struct p2p_connection_context_t: base_type //t_payload_net_handler::connection_context //public net_utils::connection_context_base
{
p2p_connection_context_t(): peer_id(0), support_flags(0), m_in_timedsync(false) {}
p2p_connection_context_t()
: fluff_txs(),
flush_time(std::chrono::steady_clock::time_point::max()),
peer_id(0),
support_flags(0),
m_in_timedsync(false)
{}
std::vector<cryptonote::blobdata> fluff_txs;
std::chrono::steady_clock::time_point flush_time;
peerid_type peer_id;
uint32_t support_flags;
bool m_in_timedsync;
@ -337,7 +346,7 @@ namespace nodetool
virtual void callback(p2p_connection_context& context);
//----------------- i_p2p_endpoint -------------------------------------------------------------
virtual bool relay_notify_to_list(int command, const epee::span<const uint8_t> data_buff, std::vector<std::pair<epee::net_utils::zone, boost::uuids::uuid>> connections);
virtual epee::net_utils::zone send_txs(std::vector<cryptonote::blobdata> txs, const epee::net_utils::zone origin, const boost::uuids::uuid& source, cryptonote::i_core_events& core, bool pad_txs);
virtual epee::net_utils::zone send_txs(std::vector<cryptonote::blobdata> txs, const epee::net_utils::zone origin, const boost::uuids::uuid& source, cryptonote::i_core_events& core);
virtual bool invoke_command_to_peer(int command, const epee::span<const uint8_t> req_buff, std::string& resp_buff, const epee::net_utils::connection_context_base& context);
virtual bool invoke_notify_to_peer(int command, const epee::span<const uint8_t> req_buff, const epee::net_utils::connection_context_base& context);
virtual bool drop_connection(const epee::net_utils::connection_context_base& context);
@ -540,6 +549,7 @@ namespace nodetool
extern const command_line::arg_descriptor<int64_t> arg_limit_rate_up;
extern const command_line::arg_descriptor<int64_t> arg_limit_rate_down;
extern const command_line::arg_descriptor<int64_t> arg_limit_rate;
extern const command_line::arg_descriptor<bool> arg_pad_transactions;
}
POP_WARNINGS

14
src/p2p/net_node.inl
View File

@ -116,6 +116,7 @@ namespace nodetool
command_line::add_arg(desc, arg_limit_rate_up);
command_line::add_arg(desc, arg_limit_rate_down);
command_line::add_arg(desc, arg_limit_rate);
command_line::add_arg(desc, arg_pad_transactions);
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
@ -340,6 +341,7 @@ namespace nodetool
{
bool testnet = command_line::get_arg(vm, cryptonote::arg_testnet_on);
bool stagenet = command_line::get_arg(vm, cryptonote::arg_stagenet_on);
const bool pad_txs = command_line::get_arg(vm, arg_pad_transactions);
m_nettype = testnet ? cryptonote::TESTNET : stagenet ? cryptonote::STAGENET : cryptonote::MAINNET;
network_zone& public_zone = m_network_zones[epee::net_utils::zone::public_];
@ -384,7 +386,7 @@ namespace nodetool
m_use_ipv6 = command_line::get_arg(vm, arg_p2p_use_ipv6);
m_require_ipv4 = !command_line::get_arg(vm, arg_p2p_ignore_ipv4);
public_zone.m_notifier = cryptonote::levin::notify{
public_zone.m_net_server.get_io_service(), public_zone.m_net_server.get_config_shared(), nullptr, true
public_zone.m_net_server.get_io_service(), public_zone.m_net_server.get_config_shared(), nullptr, true, pad_txs
};
if (command_line::has_arg(vm, arg_p2p_add_peer))
@ -495,7 +497,7 @@ namespace nodetool
}
zone.m_notifier = cryptonote::levin::notify{
zone.m_net_server.get_io_service(), zone.m_net_server.get_config_shared(), std::move(this_noise), false
zone.m_net_server.get_io_service(), zone.m_net_server.get_config_shared(), std::move(this_noise), false, pad_txs
};
}
@ -2054,18 +2056,18 @@ namespace nodetool
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
epee::net_utils::zone node_server<t_payload_net_handler>::send_txs(std::vector<cryptonote::blobdata> txs, const epee::net_utils::zone origin, const boost::uuids::uuid& source, cryptonote::i_core_events& core, const bool pad_txs)
epee::net_utils::zone node_server<t_payload_net_handler>::send_txs(std::vector<cryptonote::blobdata> txs, const epee::net_utils::zone origin, const boost::uuids::uuid& source, cryptonote::i_core_events& core)
{
namespace enet = epee::net_utils;
const auto send = [&txs, &source, &core, pad_txs] (std::pair<const enet::zone, network_zone>& network)
const auto send = [&txs, &source, &core] (std::pair<const enet::zone, network_zone>& network)
{
const bool is_public = (network.first == enet::zone::public_);
const cryptonote::relay_method tx_relay = is_public ?
cryptonote::relay_method::flood : cryptonote::relay_method::local;
cryptonote::relay_method::fluff : cryptonote::relay_method::local;
core.on_transactions_relayed(epee::to_span(txs), tx_relay);
if (network.second.m_notifier.send_txs(std::move(txs), source, (pad_txs || !is_public)))
if (network.second.m_notifier.send_txs(std::move(txs), source))
return network.first;
return enet::zone::invalid;
};

4
src/p2p/net_node_common.h
View File

@ -50,7 +50,7 @@ namespace nodetool
struct i_p2p_endpoint
{
virtual bool relay_notify_to_list(int command, const epee::span<const uint8_t> data_buff, std::vector<std::pair<epee::net_utils::zone, boost::uuids::uuid>> connections)=0;
virtual epee::net_utils::zone send_txs(std::vector<cryptonote::blobdata> txs, const epee::net_utils::zone origin, const boost::uuids::uuid& source, cryptonote::i_core_events& core, bool pad_txs)=0;
virtual epee::net_utils::zone send_txs(std::vector<cryptonote::blobdata> txs, const epee::net_utils::zone origin, const boost::uuids::uuid& source, cryptonote::i_core_events& core)=0;
virtual bool invoke_command_to_peer(int command, const epee::span<const uint8_t> req_buff, std::string& resp_buff, const epee::net_utils::connection_context_base& context)=0;
virtual bool invoke_notify_to_peer(int command, const epee::span<const uint8_t> req_buff, const epee::net_utils::connection_context_base& context)=0;
virtual bool drop_connection(const epee::net_utils::connection_context_base& context)=0;
@ -75,7 +75,7 @@ namespace nodetool
{
return false;
}
virtual epee::net_utils::zone send_txs(std::vector<cryptonote::blobdata> txs, const epee::net_utils::zone origin, const boost::uuids::uuid& source, cryptonote::i_core_events& core, const bool pad_txs)
virtual epee::net_utils::zone send_txs(std::vector<cryptonote::blobdata> txs, const epee::net_utils::zone origin, const boost::uuids::uuid& source, cryptonote::i_core_events& core)
{
return epee::net_utils::zone::invalid;
}

4
tests/core_tests/chaingen.h
View File

@ -517,7 +517,7 @@ public:
, m_events(events)
, m_validator(validator)
, m_ev_index(0)
, m_tx_relay(cryptonote::relay_method::flood)
, m_tx_relay(cryptonote::relay_method::fluff)
{
}
@ -550,7 +550,7 @@ public:
}
else
{
m_tx_relay = cryptonote::relay_method::flood;
m_tx_relay = cryptonote::relay_method::fluff;
}
return true;

96
tests/unit_tests/levin.cpp
View File

@ -271,12 +271,12 @@ namespace
EXPECT_EQ(connection_ids_.size(), connections_->get_connections_count());
}
cryptonote::levin::notify make_notifier(const std::size_t noise_size, bool is_public)
cryptonote::levin::notify make_notifier(const std::size_t noise_size, bool is_public, bool pad_txs)
{
epee::byte_slice noise = nullptr;
if (noise_size)
noise = epee::levin::make_noise_notify(noise_size);
return cryptonote::levin::notify{io_service_, connections_, std::move(noise), is_public};
return cryptonote::levin::notify{io_service_, connections_, std::move(noise), is_public, pad_txs};
}
boost::uuids::random_generator random_generator_;
@ -434,12 +434,16 @@ TEST_F(levin_notify, defaulted)
EXPECT_FALSE(status.has_noise);
EXPECT_FALSE(status.connections_filled);
}
EXPECT_FALSE(notifier.send_txs({}, random_generator_(), false));
EXPECT_TRUE(notifier.send_txs({}, random_generator_()));
std::vector<cryptonote::blobdata> txs(2);
txs[0].resize(100, 'e');
EXPECT_FALSE(notifier.send_txs(std::move(txs), random_generator_()));
}
TEST_F(levin_notify, flood)
TEST_F(levin_notify, fluff_without_padding)
{
cryptonote::levin::notify notifier = make_notifier(0, true);
cryptonote::levin::notify notifier = make_notifier(0, true, false);
for (unsigned count = 0; count < 10; ++count)
add_connection(count % 2 == 0);
@ -464,10 +468,13 @@ TEST_F(levin_notify, flood)
ASSERT_EQ(10u, contexts_.size());
{
auto context = contexts_.begin();
EXPECT_TRUE(notifier.send_txs(txs, context->get_id(), false));
EXPECT_TRUE(notifier.send_txs(txs, context->get_id()));
io_service_.reset();
ASSERT_LT(0u, io_service_.poll());
notifier.run_fluff();
ASSERT_LT(0u, io_service_.poll());
EXPECT_EQ(0u, context->process_send_queue());
for (++context; context != contexts_.end(); ++context)
EXPECT_EQ(1u, context->process_send_queue());
@ -480,14 +487,42 @@ TEST_F(levin_notify, flood)
EXPECT_TRUE(notification._.empty());
}
}
}
TEST_F(levin_notify, fluff_with_padding)
{
cryptonote::levin::notify notifier = make_notifier(0, true, true);
for (unsigned count = 0; count < 10; ++count)
add_connection(count % 2 == 0);
{
const auto status = notifier.get_status();
EXPECT_FALSE(status.has_noise);
EXPECT_FALSE(status.connections_filled);
}
notifier.new_out_connection();
io_service_.poll();
{
const auto status = notifier.get_status();
EXPECT_FALSE(status.has_noise);
EXPECT_FALSE(status.connections_filled); // not tracked
}
std::vector<cryptonote::blobdata> txs(2);
txs[0].resize(100, 'e');
txs[1].resize(200, 'f');
ASSERT_EQ(10u, contexts_.size());
{
auto context = contexts_.begin();
EXPECT_TRUE(notifier.send_txs(txs, context->get_id(), true));
EXPECT_TRUE(notifier.send_txs(txs, context->get_id()));
io_service_.reset();
ASSERT_LT(0u, io_service_.poll());
notifier.run_fluff();
ASSERT_LT(0u, io_service_.poll());
EXPECT_EQ(0u, context->process_send_queue());
for (++context; context != contexts_.end(); ++context)
EXPECT_EQ(1u, context->process_send_queue());
@ -502,9 +537,9 @@ TEST_F(levin_notify, flood)
}
}
TEST_F(levin_notify, private_flood)
TEST_F(levin_notify, private_fluff_without_padding)
{
cryptonote::levin::notify notifier = make_notifier(0, false);
cryptonote::levin::notify notifier = make_notifier(0, false, false);
for (unsigned count = 0; count < 10; ++count)
add_connection(count % 2 == 0);
@ -529,10 +564,14 @@ TEST_F(levin_notify, private_flood)
ASSERT_EQ(10u, contexts_.size());
{
auto context = contexts_.begin();
EXPECT_TRUE(notifier.send_txs(txs, context->get_id(), false));
EXPECT_TRUE(notifier.send_txs(txs, context->get_id()));
io_service_.reset();
ASSERT_LT(0u, io_service_.poll());
notifier.run_fluff();
io_service_.reset();
ASSERT_LT(0u, io_service_.poll());
EXPECT_EQ(0u, context->process_send_queue());
for (++context; context != contexts_.end(); ++context)
{
@ -548,14 +587,43 @@ TEST_F(levin_notify, private_flood)
EXPECT_TRUE(notification._.empty());
}
}
}
TEST_F(levin_notify, private_fluff_with_padding)
{
cryptonote::levin::notify notifier = make_notifier(0, false, true);
for (unsigned count = 0; count < 10; ++count)
add_connection(count % 2 == 0);
{
const auto status = notifier.get_status();
EXPECT_FALSE(status.has_noise);
EXPECT_FALSE(status.connections_filled);
}
notifier.new_out_connection();
io_service_.poll();
{
const auto status = notifier.get_status();
EXPECT_FALSE(status.has_noise);
EXPECT_FALSE(status.connections_filled); // not tracked
}
std::vector<cryptonote::blobdata> txs(2);
txs[0].resize(100, 'e');
txs[1].resize(200, 'f');
ASSERT_EQ(10u, contexts_.size());
{
auto context = contexts_.begin();
EXPECT_TRUE(notifier.send_txs(txs, context->get_id(), true));
EXPECT_TRUE(notifier.send_txs(txs, context->get_id()));
io_service_.reset();
ASSERT_LT(0u, io_service_.poll());
notifier.run_fluff();
io_service_.reset();
ASSERT_LT(0u, io_service_.poll());
EXPECT_EQ(0u, context->process_send_queue());
for (++context; context != contexts_.end(); ++context)
{
@ -582,7 +650,7 @@ TEST_F(levin_notify, noise)
txs[0].resize(1900, 'h');
const boost::uuids::uuid incoming_id = random_generator_();
cryptonote::levin::notify notifier = make_notifier(2048, false);
cryptonote::levin::notify notifier = make_notifier(2048, false, true);
{
const auto status = notifier.get_status();
@ -608,7 +676,7 @@ TEST_F(levin_notify, noise)
EXPECT_EQ(0u, receiver_.notified_size());
}
EXPECT_TRUE(notifier.send_txs(txs, incoming_id, false));
EXPECT_TRUE(notifier.send_txs(txs, incoming_id));
notifier.run_stems();
io_service_.reset();
ASSERT_LT(0u, io_service_.poll());
@ -627,7 +695,7 @@ TEST_F(levin_notify, noise)
}
txs[0].resize(3000, 'r');
EXPECT_TRUE(notifier.send_txs(txs, incoming_id, true));
EXPECT_TRUE(notifier.send_txs(txs, incoming_id));
notifier.run_stems();
io_service_.reset();
ASSERT_LT(0u, io_service_.poll());