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-rw-r--r--src/cryptonote_protocol/cryptonote_protocol_handler.inl9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/cryptonote_protocol/cryptonote_protocol_handler.inl b/src/cryptonote_protocol/cryptonote_protocol_handler.inl
index 711605597..2e1df8078 100644
--- a/src/cryptonote_protocol/cryptonote_protocol_handler.inl
+++ b/src/cryptonote_protocol/cryptonote_protocol_handler.inl
@@ -308,7 +308,8 @@ namespace cryptonote
<< " [Your node is " << 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.safesyncmode(false);
+ if (hshd.current_height >= m_core.get_current_blockchain_height() + 5) // don't switch to unsafe mode just for a few blocks
+ m_core.safesyncmode(false);
}
LOG_PRINT_L1("Remote blockchain height: " << hshd.current_height << ", id: " << hshd.top_id);
context.m_state = cryptonote_connection_context::state_synchronizing;
@@ -1629,10 +1630,10 @@ skip:
}
uint64_t n_use_blocks = m_core.prevalidate_block_hashes(arg.start_height, arg.m_block_ids);
- if (n_use_blocks == 0)
+ if (n_use_blocks + HASH_OF_HASHES_STEP <= arg.m_block_ids.size())
{
- LOG_ERROR_CCONTEXT("Peer yielded no usable blocks, dropping connection");
- drop_connection(context, false, false);
+ LOG_ERROR_CCONTEXT("Most blocks are invalid, dropping connection");
+ drop_connection(context, true, false);
return 1;
}