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cryptonote_protocol: fix out of order addition

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This was broken by the reorg fix, since we now have to add blocks
regardless of their starting height. We now check whether we know
the parent for the first block in the next span, or whether it was
requested. If neither, it's an orphan. If it is not known, but was
requested, we wait to get that block.
This commit is contained in:
moneromooo-monero 2017-08-15 16:54:08 +01:00
parent 6edb1b3e46
commit 3da1edfde5
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1 changed files with 37 additions and 0 deletions
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37
src/cryptonote_protocol/cryptonote_protocol_handler.inl
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@ -990,6 +990,43 @@ namespace cryptonote
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);