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Increase the ip address relay branching factor for unreachable networks

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Onion addresses propagate very badly among the IPv4/IPv6 network, resulting
in difficulty for those to find each other.

The branching factor 1 is probably so low that propagations die out before
they reach another onion peer. Increase it to 1.5 on average.
This commit is contained in:
Pieter Wuille 2020-08-14 22:53:51 -07:00
parent d052f5e6b7
commit 86d4cf42d9
1 changed files with 3 additions and 1 deletions
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4
src/net_processing.cpp
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@ -1481,7 +1481,6 @@ void RelayTransaction(const uint256& txid, const uint256& wtxid, const CConnman&
static void RelayAddress(const CAddress& addr, bool fReachable, const CConnman& connman)
{
unsigned int nRelayNodes = fReachable ? 2 : 1; // limited relaying of addresses outside our network(s)
// Relay to a limited number of other nodes
// Use deterministic randomness to send to the same nodes for 24 hours
@ -1490,6 +1489,9 @@ static void RelayAddress(const CAddress& addr, bool fReachable, const CConnman&
const CSipHasher hasher = connman.GetDeterministicRandomizer(RANDOMIZER_ID_ADDRESS_RELAY).Write(hashAddr << 32).Write((GetTime() + hashAddr) / (24 * 60 * 60));
FastRandomContext insecure_rand;
// Relay reachable addresses to 2 peers. Unreachable addresses are relayed randomly to 1 or 2 peers.
unsigned int nRelayNodes = (fReachable || (hasher.Finalize() & 1)) ? 2 : 1;
std::array<std::pair<uint64_t, CNode*>,2> best{{{0, nullptr}, {0, nullptr}}};
assert(nRelayNodes <= best.size());