diff options
Diffstat (limited to 'src/net_processing.cpp')
| -rw-r--r-- | src/net_processing.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/net_processing.cpp b/src/net_processing.cpp index 02eb3762b1..e9e6544069 100644 --- a/src/net_processing.cpp +++ b/src/net_processing.cpp @@ -135,6 +135,8 @@ static const unsigned int NODE_NETWORK_LIMITED_MIN_BLOCKS = 288; static constexpr auto AVG_LOCAL_ADDRESS_BROADCAST_INTERVAL{24h}; /** Average delay between peer address broadcasts */ static constexpr auto AVG_ADDRESS_BROADCAST_INTERVAL{30s}; +/** Delay between rotating the peers we relay a particular address to */ +static constexpr auto ROTATE_ADDR_RELAY_DEST_INTERVAL{24h}; /** Average delay between trickled inventory transmissions for inbound peers. * Blocks and peers with NetPermissionFlags::NoBan permission bypass this. */ static constexpr auto INBOUND_INVENTORY_BROADCAST_INTERVAL{5s}; @@ -1818,9 +1820,12 @@ void PeerManagerImpl::RelayAddress(NodeId originator, // Use deterministic randomness to send to the same nodes for 24 hours // at a time so the m_addr_knowns of the chosen nodes prevent repeats const uint64_t hash_addr{CServiceHash(0, 0)(addr)}; + const auto current_time{GetTime<std::chrono::seconds>()}; + // Adding address hash makes exact rotation time different per address, while preserving periodicity. + const uint64_t time_addr{(static_cast<uint64_t>(count_seconds(current_time)) + hash_addr) / count_seconds(ROTATE_ADDR_RELAY_DEST_INTERVAL)}; const CSipHasher hasher{m_connman.GetDeterministicRandomizer(RANDOMIZER_ID_ADDRESS_RELAY) .Write(hash_addr) - .Write((GetTime() + hash_addr) / (24 * 60 * 60))}; + .Write(time_addr)}; FastRandomContext insecure_rand; // Relay reachable addresses to 2 peers. Unreachable addresses are relayed randomly to 1 or 2 peers. @@ -4472,7 +4477,7 @@ void PeerManagerImpl::MaybeSendPing(CNode& node_to, Peer& peer, std::chrono::mic if (pingSend) { uint64_t nonce = 0; while (nonce == 0) { - GetRandBytes((unsigned char*)&nonce, sizeof(nonce)); + GetRandBytes({(unsigned char*)&nonce, sizeof(nonce)}); } peer.m_ping_queued = false; peer.m_ping_start = now; |