Method ReadBlock

src/node/blockstorage.cpp:1050–1089

}

bool BlockManager::ReadBlock(CBlock& block, const FlatFilePos& pos, const std::optional<uint256>& expected_hash) const
{
    block.SetNull();

    // Open history file to read
    const auto block_data{ReadRawBlock(pos)};
    if (!block_data) {
        return false;
    }

    try {
        // Read block
        SpanReader{*block_data} >> TX_WITH_WITNESS(block);
    } catch (const std::exception& e) {
        LogError("Deserialize or I/O error - %s at %s while reading block", e.what(), pos.ToString());
        return false;
    }

    const auto block_hash{block.GetHash()};

    // Check the header
    if (!CheckProofOfWork(block_hash, block.nBits, GetConsensus())) {
        LogError("Errors in block header at %s while reading block", pos.ToString());
        return false;
    }

    // Signet only: check block solution
    if (GetConsensus().signet_blocks && !CheckSignetBlockSolution(block, GetConsensus())) {
        LogError("Errors in block solution at %s while reading block", pos.ToString());
        return false;
    }

    if (expected_hash && block_hash != *expected_hash) {
        LogError("GetHash() doesn't match index at %s while reading block (%s != %s)",
                 pos.ToString(), block_hash.ToString(), expected_hash->ToString());
        return false;
    }

    return true;
}

bool BlockManager::ReadBlock(CBlock& block, const CBlockIndex& index) const
{