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Merge pull request #10257

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d8d3cf9 p2p: fix race causing dropped connections during sync (j-berman)
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tobtoht 2025-12-29 22:24:38 +00:00
commit 9dff86103e
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6 changed files with 12 additions and 14 deletions
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4
src/cryptonote_core/blockchain.cpp
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@ -728,13 +728,13 @@ crypto::hash Blockchain::get_tail_id() const
* powers of 2 less recent from there, so 13, 17, 25, etc...
*
*/
bool Blockchain::get_short_chain_history(std::list<crypto::hash>& ids) const
bool Blockchain::get_short_chain_history(std::list<crypto::hash>& ids, uint64_t& current_height) const
{
LOG_PRINT_L3("Blockchain::" << __func__);
CRITICAL_REGION_LOCAL(m_blockchain_lock);
uint64_t i = 0;
uint64_t current_multiplier = 1;
uint64_t sz = m_db->height();
uint64_t sz = current_height = m_db->height();
if(!sz)
return true;

3
src/cryptonote_core/blockchain.h
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@ -445,10 +445,11 @@ namespace cryptonote
* powers of 2 less recent from there, so 13, 17, 25, etc...
*
* @param ids return-by-reference list to put the resulting hashes in
* @param current_height the current blockchain height, return-by-reference
*
* @return true
*/
bool get_short_chain_history(std::list<crypto::hash>& ids) const;
bool get_short_chain_history(std::list<crypto::hash>& ids, uint64_t& current_height) const;
/**
* @brief get recent block hashes for a foreign chain

4
src/cryptonote_core/cryptonote_core.cpp
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@ -1536,9 +1536,9 @@ namespace cryptonote
return m_mempool.get_pool_for_rpc(tx_infos, key_image_infos);
}
//-----------------------------------------------------------------------------------------------
bool core::get_short_chain_history(std::list<crypto::hash>& ids) const
bool core::get_short_chain_history(std::list<crypto::hash>& ids, uint64_t& current_height) const
{
return m_blockchain_storage.get_short_chain_history(ids);
return m_blockchain_storage.get_short_chain_history(ids, current_height);
}
//-----------------------------------------------------------------------------------------------
bool core::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NOTIFY_RESPONSE_GET_OBJECTS::request& rsp, cryptonote_connection_context& context)

2
src/cryptonote_core/cryptonote_core.h
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@ -580,7 +580,7 @@ namespace cryptonote
*
* @note see Blockchain::get_short_chain_history
*/
bool get_short_chain_history(std::list<crypto::hash>& ids) const;
bool get_short_chain_history(std::list<crypto::hash>& ids, uint64_t& current_height) const;
/**
* @copydoc Blockchain::find_blockchain_supplement(const std::list<crypto::hash>&, NOTIFY_RESPONSE_CHAIN_ENTRY::request&) const

11
src/cryptonote_protocol/cryptonote_protocol_handler.inl
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@ -274,8 +274,7 @@ namespace cryptonote
{
NOTIFY_REQUEST_CHAIN::request r = {};
context.m_needed_objects.clear();
context.m_expect_height = m_core.get_current_blockchain_height();
m_core.get_short_chain_history(r.block_ids);
m_core.get_short_chain_history(r.block_ids, context.m_expect_height);
handler_request_blocks_history( r.block_ids ); // change the limit(?), sleep(?)
r.prune = m_sync_pruned_blocks;
context.m_last_request_time = boost::posix_time::microsec_clock::universal_time();
@ -730,8 +729,7 @@ namespace cryptonote
context.m_needed_objects.clear();
context.m_state = cryptonote_connection_context::state_synchronizing;
NOTIFY_REQUEST_CHAIN::request r = {};
context.m_expect_height = m_core.get_current_blockchain_height();
m_core.get_short_chain_history(r.block_ids);
m_core.get_short_chain_history(r.block_ids, context.m_expect_height);
handler_request_blocks_history( r.block_ids ); // change the limit(?), sleep(?)
r.prune = m_sync_pruned_blocks;
context.m_last_request_time = boost::posix_time::microsec_clock::universal_time();
@ -2340,8 +2338,7 @@ skip:
{//we have to fetch more objects ids, request blockchain entry
NOTIFY_REQUEST_CHAIN::request r = {};
context.m_expect_height = m_core.get_current_blockchain_height();
m_core.get_short_chain_history(r.block_ids);
m_core.get_short_chain_history(r.block_ids, context.m_expect_height);
CHECK_AND_ASSERT_MES(!r.block_ids.empty(), false, "Short chain history is empty");
// we'll want to start off from where we are on that peer, which may not be added yet
@ -2477,7 +2474,7 @@ skip:
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);
<< ", m_start_height=" << arg.start_height << ", m_total_height=" << arg.total_height << ", expect height=" << context.m_expect_height);
MLOG_PEER_STATE("received chain");
if (context.m_expect_response != NOTIFY_RESPONSE_CHAIN_ENTRY::ID)

2
tests/unit_tests/node_server.cpp
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@ -56,7 +56,7 @@ public:
void set_target_blockchain_height(uint64_t) {}
bool init(const boost::program_options::variables_map& vm) {return true ;}
bool deinit(){return true;}
bool get_short_chain_history(std::list<crypto::hash>& ids) const { return true; }
bool get_short_chain_history(std::list<crypto::hash>& ids, uint64_t& current_height) const { return true; }
bool have_block(const crypto::hash& id, int *where = NULL) const {return false;}
bool have_block_unlocked(const crypto::hash& id, int *where = NULL) const {return false;}
void get_blockchain_top(uint64_t& height, crypto::hash& top_id)const{height=0;top_id=crypto::null_hash;}