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doc, test: Test and explain service flag handling

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Service flags are handled differently, depending on whether
validated (if received from the peer) or unvalidated (received
via gossip relay).
This commit is contained in:
Martin Zumsande 2024-01-09 14:04:51 -05:00
parent b3b19be20d
commit 74ebd4d135
3 changed files with 34 additions and 2 deletions
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3
src/net_processing.cpp
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@ -3376,6 +3376,9 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type,
vRecv >> CNetAddr::V1(addrMe);
if (!pfrom.IsInboundConn())
{
// Overwrites potentially existing services. In contrast to this,
// unvalidated services received via gossip relay in ADDR/ADDRV2
// messages are only ever added but cannot replace existing ones.
m_addrman.SetServices(pfrom.addr, nServices);
}
if (pfrom.ExpectServicesFromConn() && !HasAllDesirableServiceFlags(nServices))