Method BlockConnected

src/net_processing.cpp:2094–2120

* Evict orphan txn pool entries based on a newly connected * block, remember the recently confirmed transactions, and delete tracked * announcements for them. Also save the time of the last tip update and * possibly reduce dynamic block stalling timeout. */

 * possibly reduce dynamic block stalling timeout.
 */
void PeerManagerImpl::BlockConnected(
    const ChainstateRole& role,
    const std::shared_ptr<const CBlock>& pblock,
    const CBlockIndex* pindex)
{
    // Update this for all chainstate roles so that we don't mistakenly see peers
    // helping us do background IBD as having a stale tip.
    m_last_tip_update = GetTime<std::chrono::seconds>();

    // In case the dynamic timeout was doubled once or more, reduce it slowly back to its default value
    auto stalling_timeout = m_block_stalling_timeout.load();
    Assume(stalling_timeout >= BLOCK_STALLING_TIMEOUT_DEFAULT);
    if (stalling_timeout != BLOCK_STALLING_TIMEOUT_DEFAULT) {
        const auto new_timeout = std::max(std::chrono::duration_cast<std::chrono::seconds>(stalling_timeout * 0.85), BLOCK_STALLING_TIMEOUT_DEFAULT);
        if (m_block_stalling_timeout.compare_exchange_strong(stalling_timeout, new_timeout)) {
            LogDebug(BCLog::NET, "Decreased stalling timeout to %d seconds\n", count_seconds(new_timeout));
        }
    }

    // The following task can be skipped since we don't maintain a mempool for
    // the historical chainstate, or during ibd since we don't receive incoming
    // transactions from peers into the mempool.
    if (!role.historical && !m_chainman.IsInitialBlockDownload()) {
        LOCK(m_tx_download_mutex);
        m_txdownloadman.BlockConnected(pblock);
    }
}

void PeerManagerImpl::BlockDisconnected(const std::shared_ptr<const CBlock> &block, const CBlockIndex* pindex)
{