connection_context

    state m_state;
    std::vector<crypto::hash> m_needed_objects;
    std::unordered_set<crypto::hash> m_requested_objects;
    uint64_t m_remote_blockchain_height;
    uint64_t m_last_response_height;
    boost::posix_time::ptime m_last_request_time;
    epee::copyable_atomic m_callback_request_count; //in debug purpose: problem with double callback rise
    crypto::hash m_last_known_hash;