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danicoin/src/cryptonote_protocol/cryptonote_protocol_handler.inl
Howard Chu 9a859844f4
Toggle SAFE syncmode on and off automatically 
If monerod is started with default sync mode, set it to SAFE after
synchronization completes. Set it back to FAST if synchronization
restarts (e.g. because another peer has a longer blockchain).

If monerod is started with an explicit sync mode, none of this
automation takes effect.
2017-08-20 16:30:28 +01:00

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/// @file
/// @author rfree (current maintainer/user in monero.cc project - most of code is from CryptoNote)
/// @brief This is the orginal cryptonote protocol network-events handler, modified by us
// Copyright (c) 2014-2017, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. 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.
//
// 3. Neither the name of the copyright holder 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 HOLDER 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.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
// (may contain code and/or modifications by other developers)
// developer rfree: this code is caller of our new network code, and is modded; e.g. for rate limiting
#include <boost/interprocess/detail/atomic.hpp>
#include <list>
#include <unordered_map>
#include "cryptonote_basic/cryptonote_format_utils.h"
#include "profile_tools.h"
#include "p2p/network_throttle-detail.hpp"
#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "net.cn"
#define MLOG_P2P_MESSAGE(x) MCINFO("net.p2p.msg", context << x)
#define BLOCK_QUEUE_NBLOCKS_THRESHOLD 10 // chunks of N blocks
#define BLOCK_QUEUE_SIZE_THRESHOLD (100*1024*1024) // MB
#define REQUEST_NEXT_SCHEDULED_SPAN_THRESHOLD (5 * 1000000) // microseconds
#define IDLE_PEER_KICK_TIME (45 * 1000000) // microseconds
namespace cryptonote
{
//-----------------------------------------------------------------------------------------------------------------------
template<class t_core>
t_cryptonote_protocol_handler<t_core>::t_cryptonote_protocol_handler(t_core& rcore, nodetool::i_p2p_endpoint<connection_context>* p_net_layout):m_core(rcore),
m_p2p(p_net_layout),
m_syncronized_connections_count(0),
m_synchronized(false),
m_stopping(false)
{
if(!m_p2p)
m_p2p = &m_p2p_stub;
}
//-----------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::init(const boost::program_options::variables_map& vm)
{
return true;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::deinit()
{
return true;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
void t_cryptonote_protocol_handler<t_core>::set_p2p_endpoint(nodetool::i_p2p_endpoint<connection_context>* p2p)
{
if(p2p)
m_p2p = p2p;
else
m_p2p = &m_p2p_stub;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::on_callback(cryptonote_connection_context& context)
{
LOG_PRINT_CCONTEXT_L2("callback fired");
CHECK_AND_ASSERT_MES_CC( context.m_callback_request_count > 0, false, "false callback fired, but context.m_callback_request_count=" << context.m_callback_request_count);
--context.m_callback_request_count;
if(context.m_state == cryptonote_connection_context::state_synchronizing)
{
NOTIFY_REQUEST_CHAIN::request r = boost::value_initialized<NOTIFY_REQUEST_CHAIN::request>();
m_core.get_short_chain_history(r.block_ids);
LOG_PRINT_CCONTEXT_L2("-->>NOTIFY_REQUEST_CHAIN: m_block_ids.size()=" << r.block_ids.size() );
post_notify<NOTIFY_REQUEST_CHAIN>(r, context);
}
return true;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::get_stat_info(core_stat_info& stat_inf)
{
return m_core.get_stat_info(stat_inf);
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
void t_cryptonote_protocol_handler<t_core>::log_connections()
{
std::stringstream ss;
ss.precision(1);
double down_sum = 0.0;
double down_curr_sum = 0.0;
double up_sum = 0.0;
double up_curr_sum = 0.0;
ss << std::setw(30) << std::left << "Remote Host"
<< std::setw(20) << "Peer id"
<< std::setw(20) << "Support Flags"
<< std::setw(30) << "Recv/Sent (inactive,sec)"
<< std::setw(25) << "State"
<< std::setw(20) << "Livetime(sec)"
<< std::setw(12) << "Down (kB/s)"
<< std::setw(14) << "Down(now)"
<< std::setw(10) << "Up (kB/s)"
<< std::setw(13) << "Up(now)"
<< ENDL;
m_p2p->for_each_connection([&](const connection_context& cntxt, nodetool::peerid_type peer_id, uint32_t support_flags)
{
bool local_ip = cntxt.m_remote_address.is_local();
auto connection_time = time(NULL) - cntxt.m_started;
ss << std::setw(30) << std::left << std::string(cntxt.m_is_income ? " [INC]":"[OUT]") +
cntxt.m_remote_address.str()
<< std::setw(20) << std::hex << peer_id
<< std::setw(20) << std::hex << support_flags
<< std::setw(30) << std::to_string(cntxt.m_recv_cnt)+ "(" + std::to_string(time(NULL) - cntxt.m_last_recv) + ")" + "/" + std::to_string(cntxt.m_send_cnt) + "(" + std::to_string(time(NULL) - cntxt.m_last_send) + ")"
<< std::setw(25) << get_protocol_state_string(cntxt.m_state)
<< std::setw(20) << std::to_string(time(NULL) - cntxt.m_started)
<< std::setw(12) << std::fixed << (connection_time == 0 ? 0.0 : cntxt.m_recv_cnt / connection_time / 1024)
<< std::setw(14) << std::fixed << cntxt.m_current_speed_down / 1024
<< std::setw(10) << std::fixed << (connection_time == 0 ? 0.0 : cntxt.m_send_cnt / connection_time / 1024)
<< std::setw(13) << std::fixed << cntxt.m_current_speed_up / 1024
<< (local_ip ? "[LAN]" : "")
<< std::left << (cntxt.m_remote_address.is_loopback() ? "[LOCALHOST]" : "") // 127.0.0.1
<< ENDL;
if (connection_time > 1)
{
down_sum += (cntxt.m_recv_cnt / connection_time / 1024);
up_sum += (cntxt.m_send_cnt / connection_time / 1024);
}
down_curr_sum += (cntxt.m_current_speed_down / 1024);
up_curr_sum += (cntxt.m_current_speed_up / 1024);
return true;
});
ss << ENDL
<< std::setw(125) << " "
<< std::setw(12) << down_sum
<< std::setw(14) << down_curr_sum
<< std::setw(10) << up_sum
<< std::setw(13) << up_curr_sum
<< ENDL;
LOG_PRINT_L0("Connections: " << ENDL << ss.str());
}
//------------------------------------------------------------------------------------------------------------------------
// Returns a list of connection_info objects describing each open p2p connection
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
std::list<connection_info> t_cryptonote_protocol_handler<t_core>::get_connections()
{
std::list<connection_info> connections;
m_p2p->for_each_connection([&](const connection_context& cntxt, nodetool::peerid_type peer_id, uint32_t support_flags)
{
connection_info cnx;
auto timestamp = time(NULL);
cnx.incoming = cntxt.m_is_income ? true : false;
cnx.address = cntxt.m_remote_address.str();
cnx.host = cntxt.m_remote_address.host_str();
cnx.ip = "";
cnx.port = "";
if (cntxt.m_remote_address.get_type_id() == epee::net_utils::ipv4_network_address::ID)
{
cnx.ip = cnx.host;
cnx.port = std::to_string(cntxt.m_remote_address.as<epee::net_utils::ipv4_network_address>().port());
}
std::stringstream peer_id_str;
peer_id_str << std::hex << std::setw(16) << peer_id;
peer_id_str >> cnx.peer_id;
cnx.support_flags = support_flags;
cnx.recv_count = cntxt.m_recv_cnt;
cnx.recv_idle_time = timestamp - std::max(cntxt.m_started, cntxt.m_last_recv);
cnx.send_count = cntxt.m_send_cnt;
cnx.send_idle_time = timestamp - std::max(cntxt.m_started, cntxt.m_last_send);
cnx.state = get_protocol_state_string(cntxt.m_state);
cnx.live_time = timestamp - cntxt.m_started;
cnx.localhost = cntxt.m_remote_address.is_loopback();
cnx.local_ip = cntxt.m_remote_address.is_local();
auto connection_time = time(NULL) - cntxt.m_started;
if (connection_time == 0)
{
cnx.avg_download = 0;
cnx.avg_upload = 0;
}
else
{
cnx.avg_download = cntxt.m_recv_cnt / connection_time / 1024;
cnx.avg_upload = cntxt.m_send_cnt / connection_time / 1024;
}
cnx.current_download = cntxt.m_current_speed_down / 1024;
cnx.current_upload = cntxt.m_current_speed_up / 1024;
cnx.connection_id = cntxt.m_connection_id;
cnx.height = cntxt.m_remote_blockchain_height;
connections.push_back(cnx);
return true;
});
return connections;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::process_payload_sync_data(const CORE_SYNC_DATA& hshd, cryptonote_connection_context& context, bool is_inital)
{
if(context.m_state == cryptonote_connection_context::state_before_handshake && !is_inital)
return true;
if(context.m_state == cryptonote_connection_context::state_synchronizing)
return true;
// from v6, if the peer advertises a top block version, reject if it's not what it should be (will only work if no voting)
const uint8_t version = m_core.get_ideal_hard_fork_version(hshd.current_height - 1);
if (version >= 6 && version != hshd.top_version)
{
LOG_DEBUG_CC(context, "Ignoring due to wrong top version " << (unsigned)hshd.top_version << ", expected " << (unsigned)version);
return false;
}
context.m_remote_blockchain_height = hshd.current_height;
uint64_t target = m_core.get_target_blockchain_height();
if (target == 0)
target = m_core.get_current_blockchain_height();
if(m_core.have_block(hshd.top_id))
{
context.m_state = cryptonote_connection_context::state_normal;
if(is_inital && target == m_core.get_current_blockchain_height())
on_connection_synchronized();
return true;
}
if (hshd.current_height > target)
{
/* As I don't know if accessing hshd from core could be a good practice,
I prefer pushing target height to the core at the same time it is pushed to the user.
Nz. */
m_core.set_target_blockchain_height(static_cast<int64_t>(hshd.current_height));
int64_t diff = static_cast<int64_t>(hshd.current_height) - static_cast<int64_t>(m_core.get_current_blockchain_height());
int64_t max_block_height = max(static_cast<int64_t>(hshd.current_height),static_cast<int64_t>(m_core.get_current_blockchain_height()));
int64_t last_block_v1 = m_core.get_testnet() ? 624633 : 1009826;
int64_t diff_v2 = max_block_height > last_block_v1 ? min(abs(diff), max_block_height - last_block_v1) : 0;
MCLOG(is_inital ? el::Level::Info : el::Level::Debug, "global", context << "Sync data returned a new top block candidate: " << m_core.get_current_blockchain_height() << " -> " << hshd.current_height
<< " [Your node is " << std::abs(diff) << " blocks (" << ((abs(diff) - diff_v2) / (24 * 60 * 60 / DIFFICULTY_TARGET_V1)) + (diff_v2 / (24 * 60 * 60 / DIFFICULTY_TARGET_V2)) << " days) "
<< (0 <= diff ? std::string("behind") : std::string("ahead"))
<< "] " << ENDL << "SYNCHRONIZATION started");
m_core.get_blockchain_storage().safesyncmode(false);
}
LOG_PRINT_L1("Remote blockchain height: " << hshd.current_height << ", id: " << hshd.top_id);
context.m_state = cryptonote_connection_context::state_synchronizing;
//let the socket to send response to handshake, but request callback, to let send request data after response
LOG_PRINT_CCONTEXT_L2("requesting callback");
++context.m_callback_request_count;
m_p2p->request_callback(context);
return true;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::get_payload_sync_data(CORE_SYNC_DATA& hshd)
{
m_core.get_blockchain_top(hshd.current_height, hshd.top_id);
hshd.top_version = m_core.get_hard_fork_version(hshd.current_height);
hshd.cumulative_difficulty = m_core.get_block_cumulative_difficulty(hshd.current_height);
hshd.current_height +=1;
return true;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::get_payload_sync_data(blobdata& data)
{
CORE_SYNC_DATA hsd = boost::value_initialized<CORE_SYNC_DATA>();
get_payload_sync_data(hsd);
epee::serialization::store_t_to_binary(hsd, data);
return true;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
int t_cryptonote_protocol_handler<t_core>::handle_notify_new_block(int command, NOTIFY_NEW_BLOCK::request& arg, cryptonote_connection_context& context)
{
MLOG_P2P_MESSAGE("Received NOTIFY_NEW_BLOCK (hop " << arg.hop << ", " << arg.b.txs.size() << " txes)");
if(context.m_state != cryptonote_connection_context::state_normal)
return 1;
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;
}
m_core.pause_mine();
std::list<block_complete_entry> blocks;
blocks.push_back(arg.b);
m_core.prepare_handle_incoming_blocks(blocks);
for(auto tx_blob_it = arg.b.txs.begin(); tx_blob_it!=arg.b.txs.end();tx_blob_it++)
{
cryptonote::tx_verification_context tvc = AUTO_VAL_INIT(tvc);
m_core.handle_incoming_tx(*tx_blob_it, tvc, true, true, false);
if(tvc.m_verifivation_failed)
{
LOG_PRINT_CCONTEXT_L1("Block verification failed: transaction verification failed, dropping connection");
drop_connection(context, false, false);
m_core.cleanup_handle_incoming_blocks();
m_core.resume_mine();
return 1;
}
}
block_verification_context bvc = boost::value_initialized<block_verification_context>();
m_core.handle_incoming_block(arg.b.block, bvc); // got block from handle_notify_new_block
m_core.cleanup_handle_incoming_blocks(true);
m_core.resume_mine();
if(bvc.m_verifivation_failed)
{
LOG_PRINT_CCONTEXT_L0("Block verification failed, dropping connection");
drop_connection(context, true, false);
return 1;
}
if(bvc.m_added_to_main_chain)
{
++arg.hop;
//TODO: Add here announce protocol usage
relay_block(arg, context);
}else if(bvc.m_marked_as_orphaned)
{
context.m_state = cryptonote_connection_context::state_synchronizing;
NOTIFY_REQUEST_CHAIN::request r = boost::value_initialized<NOTIFY_REQUEST_CHAIN::request>();
m_core.get_short_chain_history(r.block_ids);
LOG_PRINT_CCONTEXT_L2("-->>NOTIFY_REQUEST_CHAIN: m_block_ids.size()=" << r.block_ids.size() );
post_notify<NOTIFY_REQUEST_CHAIN>(r, context);
}
return 1;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
int t_cryptonote_protocol_handler<t_core>::handle_notify_new_fluffy_block(int command, NOTIFY_NEW_FLUFFY_BLOCK::request& arg, cryptonote_connection_context& context)
{
MLOG_P2P_MESSAGE("Received NOTIFY_NEW_FLUFFY_BLOCK (height " << arg.current_blockchain_height << ", hop " << arg.hop << ", " << arg.b.txs.size() << " txes)");
if(context.m_state != cryptonote_connection_context::state_normal)
return 1;
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;
}
m_core.pause_mine();
block new_block;
transaction miner_tx;
if(parse_and_validate_block_from_blob(arg.b.block, new_block))
{
// This is a second notification, we must have asked for some missing tx
if(!context.m_requested_objects.empty())
{
// What we asked for != to what we received ..
if(context.m_requested_objects.size() != arg.b.txs.size())
{
LOG_ERROR_CCONTEXT
(
"NOTIFY_NEW_FLUFFY_BLOCK -> request/response mismatch, "
<< "block = " << epee::string_tools::pod_to_hex(get_blob_hash(arg.b.block))
<< ", requested = " << context.m_requested_objects.size()
<< ", received = " << new_block.tx_hashes.size()
<< ", dropping connection"
);
drop_connection(context, false, false);
m_core.resume_mine();
return 1;
}
}
std::list<blobdata> have_tx;
// Instead of requesting missing transactions by hash like BTC,
// we do it by index (thanks to a suggestion from moneromooo) because
// we're way cooler .. and also because they're smaller than hashes.
//
// Also, remember to pepper some whitespace changes around to bother
// moneromooo ... only because I <3 him.
std::vector<size_t> need_tx_indices;
transaction tx;
crypto::hash tx_hash;
for(auto& tx_blob: arg.b.txs)
{
if(parse_and_validate_tx_from_blob(tx_blob, tx))
{
try
{
if(!get_transaction_hash(tx, tx_hash))
{
LOG_PRINT_CCONTEXT_L1
(
"NOTIFY_NEW_FLUFFY_BLOCK: get_transaction_hash failed"
<< ", dropping connection"
);
drop_connection(context, false, false);
m_core.resume_mine();
return 1;
}
}
catch(...)
{
LOG_PRINT_CCONTEXT_L1
(
"NOTIFY_NEW_FLUFFY_BLOCK: get_transaction_hash failed"
<< ", exception thrown"
<< ", dropping connection"
);
drop_connection(context, false, false);
m_core.resume_mine();
return 1;
}
// hijacking m_requested objects in connection context to patch up
// a possible DOS vector pointed out by @monero-moo where peers keep
// sending (0...n-1) transactions.
// If requested objects is not empty, then we must have asked for
// some missing transacionts, make sure that they're all there.
//
// Can I safely re-use this field? I think so, but someone check me!
if(!context.m_requested_objects.empty())
{
auto req_tx_it = context.m_requested_objects.find(tx_hash);
if(req_tx_it == context.m_requested_objects.end())
{
LOG_ERROR_CCONTEXT
(
"Peer sent wrong transaction (NOTIFY_NEW_FLUFFY_BLOCK): "
<< "transaction with id = " << tx_hash << " wasn't requested, "
<< "dropping connection"
);
drop_connection(context, false, false);
m_core.resume_mine();
return 1;
}
context.m_requested_objects.erase(req_tx_it);
}
// we might already have the tx that the peer
// sent in our pool, so don't verify again..
if(!m_core.pool_has_tx(tx_hash))
{
MDEBUG("Incoming tx " << tx_hash << " not in pool, adding");
cryptonote::tx_verification_context tvc = AUTO_VAL_INIT(tvc);
if(!m_core.handle_incoming_tx(tx_blob, tvc, true, true, false) || tvc.m_verifivation_failed)
{
LOG_PRINT_CCONTEXT_L1("Block verification failed: transaction verification failed, dropping connection");
drop_connection(context, false, false);
m_core.resume_mine();
return 1;
}
//
// future todo:
// tx should only not be added to pool if verification failed, but
// maybe in the future could not be added for other reasons
// according to monero-moo so keep track of these separately ..
//
}
}
else
{
LOG_ERROR_CCONTEXT
(
"sent wrong tx: failed to parse and validate transaction: "
<< epee::string_tools::buff_to_hex_nodelimer(tx_blob)
<< ", dropping connection"
);
drop_connection(context, false, false);
m_core.resume_mine();
return 1;
}
}
// The initial size equality check could have been fooled if the sender
// gave us the number of transactions we asked for, but not the right
// ones. This check make sure the transactions we asked for were the
// ones we received.
if(context.m_requested_objects.size())
{
MERROR
(
"NOTIFY_NEW_FLUFFY_BLOCK: peer sent the number of transaction requested"
<< ", but not the actual transactions requested"
<< ", context.m_requested_objects.size() = " << context.m_requested_objects.size()
<< ", dropping connection"
);
drop_connection(context, false, false);
m_core.resume_mine();
return 1;
}
size_t tx_idx = 0;
for(auto& tx_hash: new_block.tx_hashes)
{
cryptonote::blobdata txblob;
if(m_core.get_pool_transaction(tx_hash, txblob))
{
have_tx.push_back(txblob);
}
else
{
std::vector<crypto::hash> tx_ids;
std::list<transaction> txes;
std::list<crypto::hash> missing;
tx_ids.push_back(tx_hash);
if (m_core.get_transactions(tx_ids, txes, missing) && missing.empty())
{
if (txes.size() == 1)
{
have_tx.push_back(tx_to_blob(txes.front()));
}
else
{
MERROR("1 tx requested, none not found, but " << txes.size() << " returned");
m_core.resume_mine();
return 1;
}
}
else
{
MDEBUG("Tx " << tx_hash << " not found in pool");
need_tx_indices.push_back(tx_idx);
}
}
++tx_idx;
}
if(!need_tx_indices.empty()) // drats, we don't have everything..
{
// request non-mempool txs
MDEBUG("We are missing " << need_tx_indices.size() << " txes for this fluffy block");
for (auto txidx: need_tx_indices)
MDEBUG(" tx " << new_block.tx_hashes[txidx]);
NOTIFY_REQUEST_FLUFFY_MISSING_TX::request missing_tx_req;
missing_tx_req.block_hash = get_block_hash(new_block);
missing_tx_req.hop = arg.hop;
missing_tx_req.current_blockchain_height = arg.current_blockchain_height;
missing_tx_req.missing_tx_indices = std::move(need_tx_indices);
m_core.resume_mine();
post_notify<NOTIFY_REQUEST_FLUFFY_MISSING_TX>(missing_tx_req, context);
}
else // whoo-hoo we've got em all ..
{
MDEBUG("We have all needed txes for this fluffy block");
block_complete_entry b;
b.block = arg.b.block;
b.txs = have_tx;
std::list<block_complete_entry> blocks;
blocks.push_back(b);
m_core.prepare_handle_incoming_blocks(blocks);
block_verification_context bvc = boost::value_initialized<block_verification_context>();
m_core.handle_incoming_block(arg.b.block, bvc); // got block from handle_notify_new_block
m_core.cleanup_handle_incoming_blocks(true);
m_core.resume_mine();
if( bvc.m_verifivation_failed )
{
LOG_PRINT_CCONTEXT_L0("Block verification failed, dropping connection");
drop_connection(context, true, false);
return 1;
}
if( bvc.m_added_to_main_chain )
{
++arg.hop;
//TODO: Add here announce protocol usage
NOTIFY_NEW_BLOCK::request reg_arg = AUTO_VAL_INIT(reg_arg);
reg_arg.hop = arg.hop;
reg_arg.current_blockchain_height = arg.current_blockchain_height;
reg_arg.b = b;
relay_block(reg_arg, context);
}
else if( bvc.m_marked_as_orphaned )
{
context.m_state = cryptonote_connection_context::state_synchronizing;
NOTIFY_REQUEST_CHAIN::request r = boost::value_initialized<NOTIFY_REQUEST_CHAIN::request>();
m_core.get_short_chain_history(r.block_ids);
LOG_PRINT_CCONTEXT_L2("-->>NOTIFY_REQUEST_CHAIN: m_block_ids.size()=" << r.block_ids.size() );
post_notify<NOTIFY_REQUEST_CHAIN>(r, context);
}
}
}
else
{
LOG_ERROR_CCONTEXT
(
"sent wrong block: failed to parse and validate block: "
<< epee::string_tools::buff_to_hex_nodelimer(arg.b.block)
<< ", dropping connection"
);
m_core.resume_mine();
drop_connection(context, false, false);
return 1;
}
return 1;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
int t_cryptonote_protocol_handler<t_core>::handle_request_fluffy_missing_tx(int command, NOTIFY_REQUEST_FLUFFY_MISSING_TX::request& arg, cryptonote_connection_context& context)
{
MLOG_P2P_MESSAGE("Received NOTIFY_REQUEST_FLUFFY_MISSING_TX (" << arg.missing_tx_indices.size() << " txes), block hash " << arg.block_hash);
std::list<std::pair<cryptonote::blobdata, block>> local_blocks;
std::list<cryptonote::blobdata> local_txs;
block b;
if (!m_core.get_block_by_hash(arg.block_hash, b))
{
LOG_ERROR_CCONTEXT("failed to find block: " << arg.block_hash << ", dropping connection");
drop_connection(context, false, false);
return 1;
}
std::vector<crypto::hash> txids;
NOTIFY_NEW_FLUFFY_BLOCK::request fluffy_response;
fluffy_response.b.block = t_serializable_object_to_blob(b);
fluffy_response.current_blockchain_height = arg.current_blockchain_height;
fluffy_response.hop = arg.hop;
for(auto& tx_idx: arg.missing_tx_indices)
{
if(tx_idx < b.tx_hashes.size())
{
MDEBUG(" tx " << b.tx_hashes[tx_idx]);
txids.push_back(b.tx_hashes[tx_idx]);
}
else
{
LOG_ERROR_CCONTEXT
(
"Failed to handle request NOTIFY_REQUEST_FLUFFY_MISSING_TX"
<< ", request is asking for a tx whose index is out of bounds "
<< ", tx index = " << tx_idx << ", block tx count " << b.tx_hashes.size()
<< ", block_height = " << arg.current_blockchain_height
<< ", dropping connection"
);
drop_connection(context, false, false);
return 1;
}
}
std::list<cryptonote::transaction> txs;
std::list<crypto::hash> missed;
if (!m_core.get_transactions(txids, txs, missed))
{
LOG_ERROR_CCONTEXT("Failed to handle request NOTIFY_REQUEST_FLUFFY_MISSING_TX, "
<< "failed to get requested transactions");
drop_connection(context, false, false);
return 1;
}
if (!missed.empty() || txs.size() != txids.size())
{
LOG_ERROR_CCONTEXT("Failed to handle request NOTIFY_REQUEST_FLUFFY_MISSING_TX, "
<< missed.size() << " requested transactions not found" << ", dropping connection");
drop_connection(context, false, false);
return 1;
}
for(auto& tx: txs)
{
fluffy_response.b.txs.push_back(t_serializable_object_to_blob(tx));
}
LOG_PRINT_CCONTEXT_L2
(
"-->>NOTIFY_RESPONSE_FLUFFY_MISSING_TX: "
<< ", txs.size()=" << fluffy_response.b.txs.size()
<< ", rsp.current_blockchain_height=" << fluffy_response.current_blockchain_height
);
post_notify<NOTIFY_NEW_FLUFFY_BLOCK>(fluffy_response, context);
return 1;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
int t_cryptonote_protocol_handler<t_core>::handle_notify_new_transactions(int command, NOTIFY_NEW_TRANSACTIONS::request& arg, cryptonote_connection_context& context)
{
MLOG_P2P_MESSAGE("Received NOTIFY_NEW_TRANSACTIONS (" << arg.txs.size() << " txes)");
if(context.m_state != cryptonote_connection_context::state_normal)
return 1;
// 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())
{
LOG_DEBUG_CC(context, "Received new tx while syncing, ignored");
return 1;
}
for(auto tx_blob_it = arg.txs.begin(); tx_blob_it!=arg.txs.end();)
{
cryptonote::tx_verification_context tvc = AUTO_VAL_INIT(tvc);
m_core.handle_incoming_tx(*tx_blob_it, tvc, false, true, false);
if(tvc.m_verifivation_failed)
{
LOG_PRINT_CCONTEXT_L1("Tx verification failed, dropping connection");
drop_connection(context, false, false);
return 1;
}
if(tvc.m_should_be_relayed)
++tx_blob_it;
else
arg.txs.erase(tx_blob_it++);
}
if(arg.txs.size())
{
//TODO: add announce usage here
relay_transactions(arg, context);
}
return true;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
int t_cryptonote_protocol_handler<t_core>::handle_request_get_objects(int command, NOTIFY_REQUEST_GET_OBJECTS::request& arg, cryptonote_connection_context& context)
{
MLOG_P2P_MESSAGE("Received NOTIFY_REQUEST_GET_OBJECTS (" << arg.blocks.size() << " blocks, " << arg.txs.size() << " txes)");
NOTIFY_RESPONSE_GET_OBJECTS::request rsp;
if(!m_core.handle_get_objects(arg, rsp, context))
{
LOG_ERROR_CCONTEXT("failed to handle request NOTIFY_REQUEST_GET_OBJECTS, dropping connection");
drop_connection(context, false, false);
return 1;
}
LOG_PRINT_CCONTEXT_L2("-->>NOTIFY_RESPONSE_GET_OBJECTS: blocks.size()=" << rsp.blocks.size() << ", txs.size()=" << rsp.txs.size()
<< ", rsp.m_current_blockchain_height=" << rsp.current_blockchain_height << ", missed_ids.size()=" << rsp.missed_ids.size());
post_notify<NOTIFY_RESPONSE_GET_OBJECTS>(rsp, context);
//handler_response_blocks_now(sizeof(rsp)); // XXX
//handler_response_blocks_now(200);
return 1;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
double t_cryptonote_protocol_handler<t_core>::get_avg_block_size()
{
CRITICAL_REGION_LOCAL(m_buffer_mutex);
if (m_avg_buffer.empty()) {
MWARNING("m_avg_buffer.size() == 0");
return 500;
}
double avg = 0;
for (const auto &element : m_avg_buffer) avg += element;
return avg / m_avg_buffer.size();
}
template<class t_core>
int t_cryptonote_protocol_handler<t_core>::handle_response_get_objects(int command, NOTIFY_RESPONSE_GET_OBJECTS::request& arg, cryptonote_connection_context& context)
{
MLOG_P2P_MESSAGE("Received NOTIFY_RESPONSE_GET_OBJECTS (" << arg.blocks.size() << " blocks, " << arg.txs.size() << " txes)");
bool force_next_span = false;
// calculate size of request
size_t size = 0;
for (const auto &element : arg.txs) size += element.size();
size_t blocks_size = 0;
for (const auto &element : arg.blocks) {
blocks_size += element.block.size();
for (const auto &tx : element.txs)
blocks_size += tx.size();
}
size += blocks_size;
for (const auto &element : arg.missed_ids)
size += sizeof(element.data);
size += sizeof(arg.current_blockchain_height);
{
CRITICAL_REGION_LOCAL(m_buffer_mutex);
m_avg_buffer.push_back(size);
}
MDEBUG(context << " downloaded " << size << " bytes worth of blocks");
/*using namespace boost::chrono;
auto point = steady_clock::now();
auto time_from_epoh = point.time_since_epoch();
auto sec = duration_cast< seconds >( time_from_epoh ).count();*/
//epee::net_utils::network_throttle_manager::get_global_throttle_inreq().logger_handle_net("log/dr-monero/net/req-all.data", sec, get_avg_block_size());
if(context.m_last_response_height > arg.current_blockchain_height)
{
LOG_ERROR_CCONTEXT("sent wrong NOTIFY_HAVE_OBJECTS: arg.m_current_blockchain_height=" << arg.current_blockchain_height
<< " < m_last_response_height=" << context.m_last_response_height << ", dropping connection");
drop_connection(context, false, false);
return 1;
}
context.m_remote_blockchain_height = arg.current_blockchain_height;
std::vector<crypto::hash> block_hashes;
block_hashes.reserve(arg.blocks.size());
const boost::posix_time::ptime now = boost::posix_time::microsec_clock::universal_time();
uint64_t start_height = std::numeric_limits<uint64_t>::max();
cryptonote::block b;
for(const block_complete_entry& block_entry: arg.blocks)
{
if (m_stopping)
{
return 1;
}
if(!parse_and_validate_block_from_blob(block_entry.block, b))
{
LOG_ERROR_CCONTEXT("sent wrong block: failed to parse and validate block: "
<< epee::string_tools::buff_to_hex_nodelimer(block_entry.block) << ", dropping connection");
drop_connection(context, false, false);
return 1;
}
if (b.miner_tx.vin.size() != 1 || b.miner_tx.vin.front().type() != typeid(txin_gen))
{
LOG_ERROR_CCONTEXT("sent wrong block: block: miner tx does not have exactly one txin_gen input"
<< epee::string_tools::buff_to_hex_nodelimer(block_entry.block) << ", dropping connection");
drop_connection(context, false, false);
return 1;
}
if (start_height == std::numeric_limits<uint64_t>::max())
start_height = boost::get<txin_gen>(b.miner_tx.vin[0]).height;
const crypto::hash block_hash = get_block_hash(b);
auto req_it = context.m_requested_objects.find(block_hash);
if(req_it == context.m_requested_objects.end())
{
LOG_ERROR_CCONTEXT("sent wrong NOTIFY_RESPONSE_GET_OBJECTS: block with id=" << epee::string_tools::pod_to_hex(get_blob_hash(block_entry.block))
<< " wasn't requested, dropping connection");
drop_connection(context, false, false);
return 1;
}
if(b.tx_hashes.size() != block_entry.txs.size())
{
LOG_ERROR_CCONTEXT("sent wrong NOTIFY_RESPONSE_GET_OBJECTS: block with id=" << epee::string_tools::pod_to_hex(get_blob_hash(block_entry.block))
<< ", tx_hashes.size()=" << b.tx_hashes.size() << " mismatch with block_complete_entry.m_txs.size()=" << block_entry.txs.size() << ", dropping connection");
drop_connection(context, false, false);
return 1;
}
context.m_requested_objects.erase(req_it);
block_hashes.push_back(block_hash);
}
if(context.m_requested_objects.size())
{
MERROR("returned not all requested objects (context.m_requested_objects.size()="
<< context.m_requested_objects.size() << "), dropping connection");
drop_connection(context, false, false);
return 1;
}
// get the last parsed block, which should be the highest one
if(m_core.have_block(cryptonote::get_block_hash(b)))
{
const uint64_t subchain_height = start_height + arg.blocks.size();
LOG_DEBUG_CC(context, "These are old blocks, ignoring: blocks " << start_height << " - " << (subchain_height-1) << ", blockchain height " << m_core.get_current_blockchain_height());
goto skip;
}
{
MLOG_YELLOW(el::Level::Debug, context << " Got NEW BLOCKS inside of " << __FUNCTION__ << ": size: " << arg.blocks.size()
<< ", blocks: " << start_height << " - " << (start_height + arg.blocks.size() - 1));
// add that new span to the block queue
const boost::posix_time::time_duration dt = now - context.m_last_request_time;
const float rate = size * 1e6 / (dt.total_microseconds() + 1);
MDEBUG(context << " adding span: " << arg.blocks.size() << " at height " << start_height << ", " << dt.total_microseconds()/1e6 << " seconds, " << (rate/1e3) << " kB/s, size now " << (m_block_queue.get_data_size() + blocks_size) / 1048576.f << " MB");
m_block_queue.add_blocks(start_height, arg.blocks, context.m_connection_id, rate, blocks_size);
context.m_last_known_hash = cryptonote::get_blob_hash(arg.blocks.back().block);
if (m_core.get_test_drop_download() && m_core.get_test_drop_download_height()) { // DISCARD BLOCKS for testing
// We try to lock the sync lock. If we can, it means no other thread is
// currently adding blocks, so we do that for as long as we can from the
// block queue. Then, we go back to download.
const boost::unique_lock<boost::mutex> sync{m_sync_lock, boost::try_to_lock};
if (!sync.owns_lock())
{
MINFO("Failed to lock m_sync_lock, going back to download");
goto skip;
}
MDEBUG(context << " lock m_sync_lock, adding blocks to chain...");
m_core.pause_mine();
epee::misc_utils::auto_scope_leave_caller scope_exit_handler = epee::misc_utils::create_scope_leave_handler(
boost::bind(&t_core::resume_mine, &m_core));
while (1)
{
const uint64_t previous_height = m_core.get_current_blockchain_height();
uint64_t start_height;
std::list<cryptonote::block_complete_entry> blocks;
boost::uuids::uuid span_connection_id;
if (!m_block_queue.get_next_span(start_height, blocks, span_connection_id))
{
MDEBUG(context << " no next span found, going back to download");
break;
}
MDEBUG(context << " next span in the queue has blocks " << start_height << "-" << (start_height + blocks.size() - 1)
<< ", we need " << previous_height);
block new_block;
if (!parse_and_validate_block_from_blob(blocks.front().block, new_block))
{
MERROR("Failed to parse block, but it should already have been parsed");
break;
}
bool parent_known = m_core.have_block(new_block.prev_id);
if (!parent_known)
{
// it could be:
// - later in the current chain
// - later in an alt chain
// - orphan
// if it was requested, then it'll be resolved later, otherwise it's an orphan
bool parent_requested = false;
m_p2p->for_each_connection([&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t support_flags)->bool{
if (context.m_requested_objects.find(new_block.prev_id) != context.m_requested_objects.end())
{
parent_requested = true;
return false;
}
return true;
});
if (!parent_requested)
{
LOG_ERROR_CCONTEXT("Got block with unknown parent which was not requested - dropping connection");
// in case the peer had dropped beforehand, remove the span anyway so other threads can wake up and get it
m_block_queue.remove_spans(span_connection_id, start_height);
return 1;
}
// parent was requested, so we wait for it to be retrieved
MINFO(context << " parent was requested, we'll get back to it");
break;
}
const boost::posix_time::ptime start = boost::posix_time::microsec_clock::universal_time();
m_core.prepare_handle_incoming_blocks(blocks);
uint64_t block_process_time_full = 0, transactions_process_time_full = 0;
size_t num_txs = 0;
for(const block_complete_entry& block_entry: blocks)
{
if (m_stopping)
{
m_core.cleanup_handle_incoming_blocks();
return 1;
}
// process transactions
TIME_MEASURE_START(transactions_process_time);
num_txs += block_entry.txs.size();
std::vector<tx_verification_context> tvc;
m_core.handle_incoming_txs(block_entry.txs, tvc, true, true, false);
std::list<blobdata>::const_iterator it = block_entry.txs.begin();
for (size_t i = 0; i < tvc.size(); ++i, ++it)
{
if(tvc[i].m_verifivation_failed)
{
if (!m_p2p->for_connection(span_connection_id, [&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t f)->bool{
LOG_ERROR_CCONTEXT("transaction verification failed on NOTIFY_RESPONSE_GET_OBJECTS, tx_id = "
<< epee::string_tools::pod_to_hex(get_blob_hash(*it)) << ", dropping connection");
drop_connection(context, false, true);
return true;
}))
LOG_ERROR_CCONTEXT("span connection id not found");
m_core.cleanup_handle_incoming_blocks();
// in case the peer had dropped beforehand, remove the span anyway so other threads can wake up and get it
m_block_queue.remove_spans(span_connection_id, start_height);
return 1;
}
}
TIME_MEASURE_FINISH(transactions_process_time);
transactions_process_time_full += transactions_process_time;
// process block
TIME_MEASURE_START(block_process_time);
block_verification_context bvc = boost::value_initialized<block_verification_context>();
m_core.handle_incoming_block(block_entry.block, bvc, false); // <--- process block
if(bvc.m_verifivation_failed)
{
if (!m_p2p->for_connection(span_connection_id, [&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t f)->bool{
LOG_PRINT_CCONTEXT_L1("Block verification failed, dropping connection");
drop_connection(context, true, true);
return true;
}))
LOG_ERROR_CCONTEXT("span connection id not found");
m_core.cleanup_handle_incoming_blocks();
// in case the peer had dropped beforehand, remove the span anyway so other threads can wake up and get it
m_block_queue.remove_spans(span_connection_id, start_height);
return 1;
}
if(bvc.m_marked_as_orphaned)
{
if (!m_p2p->for_connection(span_connection_id, [&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t f)->bool{
LOG_PRINT_CCONTEXT_L1("Block received at sync phase was marked as orphaned, dropping connection");
drop_connection(context, true, true);
return true;
}))
LOG_ERROR_CCONTEXT("span connection id not found");
m_core.cleanup_handle_incoming_blocks();
// in case the peer had dropped beforehand, remove the span anyway so other threads can wake up and get it
m_block_queue.remove_spans(span_connection_id, start_height);
return 1;
}
TIME_MEASURE_FINISH(block_process_time);
block_process_time_full += block_process_time;
} // each download block
MCINFO("sync-info", "Block process time (" << blocks.size() << " blocks, " << num_txs << " txs): " << block_process_time_full + transactions_process_time_full << " (" << transactions_process_time_full << "/" << block_process_time_full << ") ms");
m_core.cleanup_handle_incoming_blocks();
m_block_queue.remove_spans(span_connection_id, start_height);
if (m_core.get_current_blockchain_height() > previous_height)
{
const boost::posix_time::time_duration dt = boost::posix_time::microsec_clock::universal_time() - start;
std::string timing_message = "";
if (ELPP->vRegistry()->allowed(el::Level::Info, "sync-info"))
timing_message = std::string(" (") + std::to_string(dt.total_microseconds()/1e6) + " sec, "
+ std::to_string((m_core.get_current_blockchain_height() - previous_height) * 1e6 / dt.total_microseconds())
+ " blocks/sec), " + std::to_string(m_block_queue.get_data_size() / 1048576.f) + " MB queued";
if (ELPP->vRegistry()->allowed(el::Level::Debug, "sync-info"))
timing_message += std::string(": ") + m_block_queue.get_overview();
MGINFO_YELLOW(context << " Synced " << m_core.get_current_blockchain_height() << "/" << m_core.get_target_blockchain_height()
<< timing_message);
}
}
} // if not DISCARD BLOCK
if (should_download_next_span(context))
{
context.m_needed_objects.clear();
context.m_last_response_height = 0;
force_next_span = true;
}
}
skip:
if (!request_missing_objects(context, true, force_next_span))
{
LOG_ERROR_CCONTEXT("Failed to request missing objects, dropping connection");
drop_connection(context, false, false);
return 1;
}
return 1;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::on_idle()
{
m_idle_peer_kicker.do_call(boost::bind(&t_cryptonote_protocol_handler<t_core>::kick_idle_peers, this));
return m_core.on_idle();
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::kick_idle_peers()
{
MTRACE("Checking for idle peers...");
m_p2p->for_each_connection([&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t support_flags)->bool
{
if (context.m_state == cryptonote_connection_context::state_synchronizing)
{
const boost::posix_time::ptime now = boost::posix_time::microsec_clock::universal_time();
const boost::posix_time::time_duration dt = now - context.m_last_request_time;
if (dt.total_microseconds() > IDLE_PEER_KICK_TIME)
{
MINFO(context << " kicking idle peer");
++context.m_callback_request_count;
m_p2p->request_callback(context);
}
}
return true;
});
return true;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
int t_cryptonote_protocol_handler<t_core>::handle_request_chain(int command, NOTIFY_REQUEST_CHAIN::request& arg, cryptonote_connection_context& context)
{
MLOG_P2P_MESSAGE("Received NOTIFY_REQUEST_CHAIN (" << arg.block_ids.size() << " blocks");
NOTIFY_RESPONSE_CHAIN_ENTRY::request r;
if(!m_core.find_blockchain_supplement(arg.block_ids, r))
{
LOG_ERROR_CCONTEXT("Failed to handle NOTIFY_REQUEST_CHAIN.");
drop_connection(context, false, false);
return 1;
}
LOG_PRINT_CCONTEXT_L2("-->>NOTIFY_RESPONSE_CHAIN_ENTRY: m_start_height=" << r.start_height << ", m_total_height=" << r.total_height << ", m_block_ids.size()=" << r.m_block_ids.size());
post_notify<NOTIFY_RESPONSE_CHAIN_ENTRY>(r, context);
return 1;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::should_download_next_span(cryptonote_connection_context& context) const
{
std::list<crypto::hash> hashes;
boost::uuids::uuid span_connection_id;
boost::posix_time::ptime request_time;
std::pair<uint64_t, uint64_t> span = m_block_queue.get_next_span_if_scheduled(hashes, span_connection_id, request_time);
// if the next span is not scheduled (or there is none)
if (span.second == 0)
{
// we might be in a weird case where there is a filled next span,
// but it starts higher than the current height
uint64_t height;
std::list<cryptonote::block_complete_entry> bcel;
if (!m_block_queue.get_next_span(height, bcel, span_connection_id, true))
return false;
if (height > m_core.get_current_blockchain_height())
{
MDEBUG(context << " we should download it as the next block isn't scheduled");
return true;
}
return false;
}
// if it was scheduled by this particular peer
if (span_connection_id == context.m_connection_id)
return false;
float span_speed = m_block_queue.get_speed(span_connection_id);
float speed = m_block_queue.get_speed(context.m_connection_id);
MDEBUG(context << " next span is scheduled for " << span_connection_id << ", speed " << span_speed << ", ours " << speed);
// we try for that span too if:
// - we're substantially faster, or:
// - we're the fastest and the other one isn't (avoids a peer being waaaay slow but yet unmeasured)
// - the other one asked at least 5 seconds ago
if (span_speed < .25 && speed > .75f)
{
MDEBUG(context << " we should download it as we're substantially faster");
return true;
}
if (speed == 1.0f && span_speed != 1.0f)
{
MDEBUG(context << " we should download it as we're the fastest peer");
return true;
}
const boost::posix_time::ptime now = boost::posix_time::microsec_clock::universal_time();
if ((now - request_time).total_microseconds() > REQUEST_NEXT_SCHEDULED_SPAN_THRESHOLD)
{
MDEBUG(context << " we should download it as this span was requested long ago");
return true;
}
return false;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::request_missing_objects(cryptonote_connection_context& context, bool check_having_blocks, bool force_next_span)
{
// flush stale spans
std::set<boost::uuids::uuid> live_connections;
m_p2p->for_each_connection([&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t support_flags)->bool{
live_connections.insert(context.m_connection_id);
return true;
});
m_block_queue.flush_stale_spans(live_connections);
// if we don't need to get next span, and the block queue is full enough, wait a bit
bool start_from_current_chain = false;
if (!force_next_span)
{
bool first = true;
while (1)
{
size_t nblocks = m_block_queue.get_num_filled_spans();
size_t size = m_block_queue.get_data_size();
if (nblocks < BLOCK_QUEUE_NBLOCKS_THRESHOLD || size < BLOCK_QUEUE_SIZE_THRESHOLD)
{
if (!first)
{
LOG_DEBUG_CC(context, "Block queue is " << nblocks << " and " << size << ", resuming");
}
break;
}
if (should_download_next_span(context))
{
MDEBUG(context << " we should try for that next span too, we think we could get it faster, resuming");
force_next_span = true;
break;
}
if (first)
{
LOG_DEBUG_CC(context, "Block queue is " << nblocks << " and " << size << ", pausing");
first = false;
context.m_state = cryptonote_connection_context::state_standby;
}
for (size_t n = 0; n < 50; ++n)
{
if (m_stopping)
return 1;
boost::this_thread::sleep_for(boost::chrono::milliseconds(100));
}
}
context.m_state = cryptonote_connection_context::state_synchronizing;
}
MDEBUG(context << " request_missing_objects: check " << check_having_blocks << ", force_next_span " << force_next_span << ", m_needed_objects " << context.m_needed_objects.size() << " lrh " << context.m_last_response_height << ", chain " << m_core.get_current_blockchain_height());
if(context.m_needed_objects.size() || force_next_span)
{
//we know objects that we need, request this objects
NOTIFY_REQUEST_GET_OBJECTS::request req;
bool is_next = false;
size_t count = 0;
const size_t count_limit = m_core.get_block_sync_size(m_core.get_current_blockchain_height());
std::pair<uint64_t, uint64_t> span = std::make_pair(0, 0);
if (force_next_span)
{
MDEBUG(context << " force_next_span is true, trying next span");
span = m_block_queue.get_start_gap_span();
if (span.second > 0)
{
const uint64_t first_block_height_known = context.m_last_response_height - context.m_needed_objects.size() + 1;
const uint64_t last_block_height_known = context.m_last_response_height;
const uint64_t first_block_height_needed = span.first;
const uint64_t last_block_height_needed = span.first + std::min(span.second, (uint64_t)count_limit) - 1;
MDEBUG(context << " gap found, span: " << span.first << " - " << span.first + span.second - 1 << " (" << last_block_height_needed << ")");
MDEBUG(context << " current known hashes from from " << first_block_height_known << " to " << last_block_height_known);
if (first_block_height_needed < first_block_height_known || last_block_height_needed > last_block_height_known)
{
MDEBUG(context << " we are missing some of the necessary hashes for this gap, requesting chain again");
context.m_needed_objects.clear();
context.m_last_response_height = 0;
start_from_current_chain = true;
goto skip;
}
MDEBUG(context << " we have the hashes for this gap");
}
if (span.second == 0)
{
std::list<crypto::hash> hashes;
boost::uuids::uuid span_connection_id;
boost::posix_time::ptime time;
span = m_block_queue.get_next_span_if_scheduled(hashes, span_connection_id, time);
if (span.second > 0)
{
is_next = true;
for (const auto &hash: hashes)
{
req.blocks.push_back(hash);
context.m_requested_objects.insert(hash);
}
}
}
}
if (span.second == 0)
{
MDEBUG(context << " span size is 0");
if (context.m_last_response_height + 1 < context.m_needed_objects.size())
{
MERROR(context << " ERROR: inconsistent context: lrh " << context.m_last_response_height << ", nos " << context.m_needed_objects.size());
context.m_needed_objects.clear();
context.m_last_response_height = 0;
goto skip;
}
// take out blocks we already have
while (!context.m_needed_objects.empty() && m_core.have_block(context.m_needed_objects.front()))
{
context.m_needed_objects.pop_front();
}
const uint64_t first_block_height = context.m_last_response_height - context.m_needed_objects.size() + 1;
span = m_block_queue.reserve_span(first_block_height, context.m_last_response_height, count_limit, context.m_connection_id, context.m_needed_objects);
MDEBUG(context << " span from " << first_block_height << ": " << span.first << "/" << span.second);
}
if (span.second == 0 && !force_next_span)
{
MDEBUG(context << " still no span reserved, we may be in the corner case of next span scheduled and everything else scheduled/filled");
std::list<crypto::hash> hashes;
boost::uuids::uuid span_connection_id;
boost::posix_time::ptime time;
span = m_block_queue.get_next_span_if_scheduled(hashes, span_connection_id, time);
if (span.second > 0)
{
is_next = true;
for (const auto &hash: hashes)
{
req.blocks.push_back(hash);
context.m_requested_objects.insert(hash);
}
}
}
MDEBUG(context << " span: " << span.first << "/" << span.second << " (" << span.first << " - " << (span.first + span.second - 1) << ")");
if (span.second > 0)
{
if (!is_next)
{
const uint64_t first_context_block_height = context.m_last_response_height - context.m_needed_objects.size() + 1;
uint64_t skip = span.first - first_context_block_height;
if (skip > context.m_needed_objects.size())
{
MERROR("ERROR: skip " << skip << ", m_needed_objects " << context.m_needed_objects.size() << ", first_context_block_height" << first_context_block_height);
return false;
}
while (skip--)
context.m_needed_objects.pop_front();
if (context.m_needed_objects.size() < span.second)
{
MERROR("ERROR: span " << span.first << "/" << span.second << ", m_needed_objects " << context.m_needed_objects.size());
return false;
}
std::list<crypto::hash> hashes;
auto it = context.m_needed_objects.begin();
for (size_t n = 0; n < span.second; ++n)
{
req.blocks.push_back(*it);
++count;
context.m_requested_objects.insert(*it);
hashes.push_back(*it);
auto j = it++;
context.m_needed_objects.erase(j);
}
}
context.m_last_request_time = boost::posix_time::microsec_clock::universal_time();
LOG_PRINT_CCONTEXT_L1("-->>NOTIFY_REQUEST_GET_OBJECTS: blocks.size()=" << req.blocks.size() << ", txs.size()=" << req.txs.size()
<< "requested blocks count=" << count << " / " << count_limit << " from " << span.first);
//epee::net_utils::network_throttle_manager::get_global_throttle_inreq().logger_handle_net("log/dr-monero/net/req-all.data", sec, get_avg_block_size());
post_notify<NOTIFY_REQUEST_GET_OBJECTS>(req, context);
return true;
}
}
skip:
context.m_needed_objects.clear();
if(context.m_last_response_height < context.m_remote_blockchain_height-1)
{//we have to fetch more objects ids, request blockchain entry
NOTIFY_REQUEST_CHAIN::request r = boost::value_initialized<NOTIFY_REQUEST_CHAIN::request>();
m_core.get_short_chain_history(r.block_ids);
if (!start_from_current_chain)
{
// we'll want to start off from where we are on that peer, which may not be added yet
if (context.m_last_known_hash != cryptonote::null_hash && r.block_ids.front() != context.m_last_known_hash)
r.block_ids.push_front(context.m_last_known_hash);
}
handler_request_blocks_history( r.block_ids ); // change the limit(?), sleep(?)
//std::string blob; // for calculate size of request
//epee::serialization::store_t_to_binary(r, blob);
//epee::net_utils::network_throttle_manager::get_global_throttle_inreq().logger_handle_net("log/dr-monero/net/req-all.data", sec, get_avg_block_size());
//LOG_PRINT_CCONTEXT_L1("r = " << 200);
context.m_last_request_time = boost::posix_time::microsec_clock::universal_time();
LOG_PRINT_CCONTEXT_L1("-->>NOTIFY_REQUEST_CHAIN: m_block_ids.size()=" << r.block_ids.size() << ", start_from_current_chain " << start_from_current_chain);
post_notify<NOTIFY_REQUEST_CHAIN>(r, context);
}else
{
CHECK_AND_ASSERT_MES(context.m_last_response_height == context.m_remote_blockchain_height-1
&& !context.m_needed_objects.size()
&& !context.m_requested_objects.size(), false, "request_missing_blocks final condition failed!"
<< "\r\nm_last_response_height=" << context.m_last_response_height
<< "\r\nm_remote_blockchain_height=" << context.m_remote_blockchain_height
<< "\r\nm_needed_objects.size()=" << context.m_needed_objects.size()
<< "\r\nm_requested_objects.size()=" << context.m_requested_objects.size()
<< "\r\non connection [" << epee::net_utils::print_connection_context_short(context)<< "]");
context.m_state = cryptonote_connection_context::state_normal;
if (context.m_remote_blockchain_height >= m_core.get_target_blockchain_height())
{
if (m_core.get_current_blockchain_height() >= m_core.get_target_blockchain_height())
{
MGINFO_GREEN("SYNCHRONIZED OK");
on_connection_synchronized();
}
}
else
{
MINFO(context << " we've reached this peer's blockchain height");
}
}
return true;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::on_connection_synchronized()
{
bool val_expected = false;
if(m_synchronized.compare_exchange_strong(val_expected, true))
{
MGINFO_YELLOW(ENDL << "**********************************************************************" << ENDL
<< "You are now synchronized with the network. You may now start monero-wallet-cli." << ENDL
<< ENDL
<< "Use the \"help\" command to see the list of available commands." << ENDL
<< "**********************************************************************");
m_core.on_synchronized();
}
m_core.get_blockchain_storage().safesyncmode(true);
return true;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
size_t t_cryptonote_protocol_handler<t_core>::get_synchronizing_connections_count()
{
size_t count = 0;
m_p2p->for_each_connection([&](cryptonote_connection_context& context, nodetool::peerid_type peer_id)->bool{
if(context.m_state == cryptonote_connection_context::state_synchronizing)
++count;
return true;
});
return count;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
int t_cryptonote_protocol_handler<t_core>::handle_response_chain_entry(int command, NOTIFY_RESPONSE_CHAIN_ENTRY::request& arg, cryptonote_connection_context& context)
{
MLOG_P2P_MESSAGE("Received NOTIFY_RESPONSE_CHAIN_ENTRY: m_block_ids.size()=" << arg.m_block_ids.size()
<< ", m_start_height=" << arg.start_height << ", m_total_height=" << arg.total_height);
if(!arg.m_block_ids.size())
{
LOG_ERROR_CCONTEXT("sent empty m_block_ids, dropping connection");
drop_connection(context, true, false);
return 1;
}
context.m_remote_blockchain_height = arg.total_height;
context.m_last_response_height = arg.start_height + arg.m_block_ids.size()-1;
if(context.m_last_response_height > context.m_remote_blockchain_height)
{
LOG_ERROR_CCONTEXT("sent wrong NOTIFY_RESPONSE_CHAIN_ENTRY, with m_total_height=" << arg.total_height
<< ", m_start_height=" << arg.start_height
<< ", m_block_ids.size()=" << arg.m_block_ids.size());
drop_connection(context, false, false);
return 1;
}
for(auto& bl_id: arg.m_block_ids)
{
context.m_needed_objects.push_back(bl_id);
}
if (!request_missing_objects(context, false))
{
LOG_ERROR_CCONTEXT("Failed to request missing objects, dropping connection");
drop_connection(context, false, false);
return 1;
}
return 1;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::relay_block(NOTIFY_NEW_BLOCK::request& arg, cryptonote_connection_context& exclude_context)
{
NOTIFY_NEW_FLUFFY_BLOCK::request fluffy_arg = AUTO_VAL_INIT(fluffy_arg);
fluffy_arg.hop = arg.hop;
fluffy_arg.current_blockchain_height = arg.current_blockchain_height;
std::list<blobdata> fluffy_txs;
fluffy_arg.b = arg.b;
fluffy_arg.b.txs = fluffy_txs;
// pre-serialize them
std::string fullBlob, fluffyBlob;
epee::serialization::store_t_to_binary(arg, fullBlob);
epee::serialization::store_t_to_binary(fluffy_arg, fluffyBlob);
// sort peers between fluffy ones and others
std::list<boost::uuids::uuid> fullConnections, fluffyConnections;
m_p2p->for_each_connection([this, &arg, &fluffy_arg, &exclude_context, &fullConnections, &fluffyConnections](connection_context& context, nodetool::peerid_type peer_id, uint32_t support_flags)
{
if (peer_id && exclude_context.m_connection_id != context.m_connection_id)
{
if(m_core.get_testnet() && (support_flags & P2P_SUPPORT_FLAG_FLUFFY_BLOCKS))
{
LOG_DEBUG_CC(context, "PEER SUPPORTS FLUFFY BLOCKS - RELAYING THIN/COMPACT WHATEVER BLOCK");
fluffyConnections.push_back(context.m_connection_id);
}
else
{
LOG_DEBUG_CC(context, "PEER DOESN'T SUPPORT FLUFFY BLOCKS - RELAYING FULL BLOCK");
fullConnections.push_back(context.m_connection_id);
}
}
return true;
});
// send fluffy ones first, we want to encourage people to run that
m_p2p->relay_notify_to_list(NOTIFY_NEW_FLUFFY_BLOCK::ID, fluffyBlob, fluffyConnections);
m_p2p->relay_notify_to_list(NOTIFY_NEW_BLOCK::ID, fullBlob, fullConnections);
return 1;
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
bool t_cryptonote_protocol_handler<t_core>::relay_transactions(NOTIFY_NEW_TRANSACTIONS::request& arg, cryptonote_connection_context& exclude_context)
{
// no check for success, so tell core they're relayed unconditionally
for(auto tx_blob_it = arg.txs.begin(); tx_blob_it!=arg.txs.end(); ++tx_blob_it)
m_core.on_transaction_relayed(*tx_blob_it);
return relay_post_notify<NOTIFY_NEW_TRANSACTIONS>(arg, exclude_context);
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
void t_cryptonote_protocol_handler<t_core>::drop_connection(cryptonote_connection_context &context, bool add_fail, bool flush_all_spans)
{
if (add_fail)
m_p2p->add_host_fail(context.m_remote_address);
m_p2p->drop_connection(context);
uint64_t target = 0;
m_p2p->for_each_connection([&](const connection_context& cntxt, nodetool::peerid_type peer_id, uint32_t support_flags) {
if (cntxt.m_state >= cryptonote_connection_context::state_synchronizing && cntxt.m_connection_id != context.m_connection_id)
target = std::max(target, cntxt.m_remote_blockchain_height);
return true;
});
const uint64_t previous_target = m_core.get_target_blockchain_height();
if (target < previous_target)
{
MINFO("Target height decreasing from " << previous_target << " to " << target);
m_core.set_target_blockchain_height(target);
}
m_block_queue.flush_spans(context.m_connection_id, flush_all_spans);
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
void t_cryptonote_protocol_handler<t_core>::stop()
{
m_stopping = true;
m_core.stop();
}
} // namespace
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