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cryptonote_core: dandelion - use local height or median height if syncing

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This commit is contained in:
xiphon 2020-11-20 11:37:19 +00:00
parent 251c64f195
commit 9d7f473af0
10 changed files with 85 additions and 18 deletions
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5
src/cryptonote_core/cryptonote_core.cpp
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@ -1510,6 +1510,11 @@ namespace cryptonote
return true;
}
//-----------------------------------------------------------------------------------------------
bool core::is_synchronized() const
{
return m_pprotocol != nullptr && m_pprotocol->is_synchronized();
}
//-----------------------------------------------------------------------------------------------
void core::on_synchronized()
{
m_miner.on_synchronized();

11
src/cryptonote_core/cryptonote_core.h
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@ -329,7 +329,7 @@ namespace cryptonote
*
* @note see Blockchain::get_current_blockchain_height()
*/
uint64_t get_current_blockchain_height() const;
virtual uint64_t get_current_blockchain_height() const final;
/**
* @brief get the hash and height of the most recent block
@ -637,6 +637,13 @@ namespace cryptonote
*/
std::string print_pool(bool short_format) const;
/**
* @brief gets the core synchronization status
*
* @return core synchronization status
*/
virtual bool is_synchronized() const final;
/**
* @copydoc miner::on_synchronized
*
@ -663,7 +670,7 @@ namespace cryptonote
*
* @param target_blockchain_height the target height
*/
virtual uint64_t get_target_blockchain_height() const override;
uint64_t get_target_blockchain_height() const;
/**
* @brief returns the newest hardfork version known to the blockchain

3
src/cryptonote_core/i_core_events.h
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@ -39,7 +39,8 @@ namespace cryptonote
virtual ~i_core_events() noexcept
{}
virtual uint64_t get_target_blockchain_height() const = 0;
virtual uint64_t get_current_blockchain_height() const = 0;
virtual bool is_synchronized() const = 0;
virtual void on_transactions_relayed(epee::span<const cryptonote::blobdata> tx_blobs, relay_method tx_relay) = 0;
};
}

2
src/cryptonote_protocol/cryptonote_protocol_handler.h
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@ -104,7 +104,7 @@ namespace cryptonote
bool get_payload_sync_data(CORE_SYNC_DATA& hshd);
bool on_callback(cryptonote_connection_context& context);
t_core& get_core(){return m_core;}
bool is_synchronized(){return m_synchronized;}
virtual bool is_synchronized() const final { return !no_sync() && m_synchronized; }
void log_connections();
std::list<connection_info> get_connections();
const block_queue &get_block_queue() const { return m_block_queue; }

6
src/cryptonote_protocol/cryptonote_protocol_handler.inl
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@ -430,7 +430,7 @@ namespace cryptonote
MLOGIF_P2P_MESSAGE(crypto::hash hash; cryptonote::block b; bool ret = cryptonote::parse_and_validate_block_from_blob(arg.b.block, b, &hash);, ret, "Received NOTIFY_NEW_BLOCK " << hash << " (height " << arg.current_blockchain_height << ", " << arg.b.txs.size() << " txes)");
if(context.m_state != cryptonote_connection_context::state_normal)
return 1;
if(!is_synchronized() || m_no_sync) // can happen if a peer connection goes to normal but another thread still hasn't finished adding queued blocks
if(!is_synchronized()) // can happen if a peer connection goes to normal but another thread still hasn't finished adding queued blocks
{
LOG_DEBUG_CC(context, "Received new block while syncing, ignored");
return 1;
@ -501,7 +501,7 @@ namespace cryptonote
MLOGIF_P2P_MESSAGE(crypto::hash hash; cryptonote::block b; bool ret = cryptonote::parse_and_validate_block_from_blob(arg.b.block, b, &hash);, ret, "Received NOTIFY_NEW_FLUFFY_BLOCK " << hash << " (height " << arg.current_blockchain_height << ", " << arg.b.txs.size() << " txes)");
if(context.m_state != cryptonote_connection_context::state_normal)
return 1;
if(!is_synchronized() || m_no_sync) // can happen if a peer connection goes to normal but another thread still hasn't finished adding queued blocks
if(!is_synchronized()) // can happen if a peer connection goes to normal but another thread still hasn't finished adding queued blocks
{
LOG_DEBUG_CC(context, "Received new block while syncing, ignored");
return 1;
@ -929,7 +929,7 @@ namespace cryptonote
// while syncing, core will lock for a long time, so we ignore
// those txes as they aren't really needed anyway, and avoid a
// long block before replying
if(!is_synchronized() || m_no_sync)
if(!is_synchronized())
{
LOG_DEBUG_CC(context, "Received new tx while syncing, ignored");
return 1;

5
src/cryptonote_protocol/cryptonote_protocol_handler_common.h
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@ -40,6 +40,7 @@ namespace cryptonote
/************************************************************************/
struct i_cryptonote_protocol
{
virtual bool is_synchronized() const = 0;
virtual bool relay_block(NOTIFY_NEW_BLOCK::request& arg, cryptonote_connection_context& exclude_context)=0;
virtual bool relay_transactions(NOTIFY_NEW_TRANSACTIONS::request& arg, const boost::uuids::uuid& source, epee::net_utils::zone zone, relay_method tx_relay)=0;
//virtual bool request_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, cryptonote_connection_context& context)=0;
@ -50,6 +51,10 @@ namespace cryptonote
/************************************************************************/
struct cryptonote_protocol_stub: public i_cryptonote_protocol
{
virtual bool is_synchronized() const final
{
return false;
}
virtual bool relay_block(NOTIFY_NEW_BLOCK::request& arg, cryptonote_connection_context& exclude_context)
{
return false;

58
src/cryptonote_protocol/levin_notify.cpp
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@ -105,8 +105,44 @@ namespace levin
return std::chrono::steady_clock::duration{crypto::rand_range(rep(0), range.count())};
}
//! \return Outgoing connections supporting fragments in `connections` filtered by remote blockchain height.
std::vector<boost::uuids::uuid> get_out_connections(connections& p2p, uint64_t min_blockchain_height)
uint64_t get_median_remote_height(connections& p2p)
{
std::vector<uint64_t> remote_heights;
remote_heights.reserve(connection_id_reserve_size);
p2p.foreach_connection([&remote_heights] (detail::p2p_context& context) {
if (!context.m_is_income)
{
remote_heights.emplace_back(context.m_remote_blockchain_height);
}
return true;
});
if (remote_heights.empty())
{
return 0;
}
const size_t n = remote_heights.size() / 2;
std::sort(remote_heights.begin(), remote_heights.end());
if (remote_heights.size() % 2 != 0)
{
return remote_heights[n];
}
return remote_heights[n-1];
}
uint64_t get_blockchain_height(connections& p2p, const i_core_events* core)
{
const uint64_t local_blockchain_height = core->get_current_blockchain_height();
if (core->is_synchronized())
{
return local_blockchain_height;
}
return std::max(local_blockchain_height, get_median_remote_height(p2p));
}
//! \return Outgoing connections supporting fragments in `connections` filtered by blockchain height.
std::vector<boost::uuids::uuid> get_out_connections(connections& p2p, uint64_t blockchain_height)
{
std::vector<boost::uuids::uuid> outs;
outs.reserve(connection_id_reserve_size);
@ -115,15 +151,21 @@ namespace levin
the reserve call so a strand is not used. Investigate if there is lots
of waiting in here. */
p2p.foreach_connection([&outs, min_blockchain_height] (detail::p2p_context& context) {
if (!context.m_is_income && context.m_remote_blockchain_height >= min_blockchain_height)
p2p.foreach_connection([&outs, blockchain_height] (detail::p2p_context& context) {
if (!context.m_is_income && context.m_remote_blockchain_height >= blockchain_height)
outs.emplace_back(context.m_connection_id);
return true;
});
MDEBUG("Found " << outs.size() << " out connections having height >= " << blockchain_height);
return outs;
}
std::vector<boost::uuids::uuid> get_out_connections(connections& p2p, const i_core_events* core)
{
return get_out_connections(p2p, get_blockchain_height(p2p, core));
}
std::string make_tx_payload(std::vector<blobdata>&& txs, const bool pad, const bool fluff)
{
NOTIFY_NEW_TRANSACTIONS::request request{};
@ -527,7 +569,7 @@ namespace levin
}
// connection list may be outdated, try again
update_channels::run(zone_, get_out_connections(*zone_->p2p, core_->get_target_blockchain_height()));
update_channels::run(zone_, get_out_connections(*zone_->p2p, core_));
}
MERROR("Unable to send transaction(s) via Dandelion++ stem");
@ -631,7 +673,7 @@ namespace levin
{
channel.active = nullptr;
channel.connection = boost::uuids::nil_uuid();
auto height = core_->get_target_blockchain_height();
auto height = get_blockchain_height(*zone_->p2p, core_);
auto connections = get_out_connections(*zone_->p2p, height);
if (connections.empty())
@ -667,7 +709,7 @@ namespace levin
const bool fluffing = crypto::rand_idx(unsigned(100)) < CRYPTONOTE_DANDELIONPP_FLUFF_PROBABILITY;
const auto start = std::chrono::steady_clock::now();
auto connections = get_out_connections(*(zone_->p2p), core_->get_target_blockchain_height());
auto connections = get_out_connections(*(zone_->p2p), core_);
zone_->strand.dispatch(
change_channels{zone_, net::dandelionpp::connection_map{std::move(connections), count_}, fluffing}
);
@ -718,7 +760,7 @@ namespace levin
return;
zone_->strand.dispatch(
update_channels{zone_, get_out_connections(*(zone_->p2p), core_->get_target_blockchain_height())}
update_channels{zone_, get_out_connections(*(zone_->p2p), core_)}
);
}

3
tests/core_proxy/core_proxy.h
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@ -66,9 +66,10 @@ namespace tests
public:
virtual bool is_synchronized() const final { return true; }
void on_synchronized(){}
void safesyncmode(const bool){}
uint64_t get_current_blockchain_height(){return 1;}
virtual uint64_t get_current_blockchain_height() const final {return 1;}
void set_target_blockchain_height(uint64_t) {}
bool init(const boost::program_options::variables_map& vm);
bool deinit(){return true;}

7
tests/unit_tests/levin.cpp
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@ -120,7 +120,12 @@ namespace
{
std::map<cryptonote::relay_method, std::vector<cryptonote::blobdata>> relayed_;
uint64_t get_target_blockchain_height() const override
virtual bool is_synchronized() const final
{
return false;
}
virtual uint64_t get_current_blockchain_height() const final
{
return 0;
}

3
tests/unit_tests/node_server.cpp
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@ -47,9 +47,10 @@ namespace cryptonote {
class test_core : public cryptonote::i_core_events
{
public:
virtual bool is_synchronized() const final { return true; }
void on_synchronized(){}
void safesyncmode(const bool){}
uint64_t get_current_blockchain_height() const {return 1;}
virtual uint64_t get_current_blockchain_height() const final {return 1;}
void set_target_blockchain_height(uint64_t) {}
bool init(const boost::program_options::variables_map& vm) {return true ;}
bool deinit(){return true;}