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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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28
src/test/addrman_tests.cpp
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@ -1068,7 +1068,7 @@ BOOST_AUTO_TEST_CASE(load_addrman_corrupted)
BOOST_AUTO_TEST_CASE(addrman_update_address)
{
// Tests updating nTime via Connected() and nServices via SetServices()
// Tests updating nTime via Connected() and nServices via SetServices() and Add()
auto addrman = std::make_unique<AddrMan>(EMPTY_NETGROUPMAN, DETERMINISTIC, GetCheckRatio(m_node));
CNetAddr source{ResolveIP("252.2.2.2")};
CAddress addr{CAddress(ResolveService("250.1.1.1", 8333), NODE_NONE)};
@ -1095,6 +1095,32 @@ BOOST_AUTO_TEST_CASE(addrman_update_address)
BOOST_CHECK_EQUAL(vAddr2.size(), 1U);
BOOST_CHECK(vAddr2.at(0).nTime >= start_time + 10000s);
BOOST_CHECK_EQUAL(vAddr2.at(0).nServices, NODE_NETWORK_LIMITED);
// Updating an existing addr through Add() (used in gossip relay) can add additional services but can't remove existing ones.
CAddress addr_v2{CAddress(ResolveService("250.1.1.1", 8333), NODE_P2P_V2)};
addr_v2.nTime = start_time;
BOOST_CHECK(!addrman->Add({addr_v2}, source));
std::vector<CAddress> vAddr3{addrman->GetAddr(/*max_addresses=*/0, /*max_pct=*/0, /*network=*/std::nullopt)};
BOOST_CHECK_EQUAL(vAddr3.size(), 1U);
BOOST_CHECK_EQUAL(vAddr3.at(0).nServices, NODE_P2P_V2 | NODE_NETWORK_LIMITED);
// SetServices() (used when we connected to them) overwrites existing service flags
addrman->SetServices(addr, NODE_NETWORK);
std::vector<CAddress> vAddr4{addrman->GetAddr(/*max_addresses=*/0, /*max_pct=*/0, /*network=*/std::nullopt)};
BOOST_CHECK_EQUAL(vAddr4.size(), 1U);
BOOST_CHECK_EQUAL(vAddr4.at(0).nServices, NODE_NETWORK);
// Promoting to Tried does not affect the service flags
BOOST_CHECK(addrman->Good(addr)); // addr has NODE_NONE
std::vector<CAddress> vAddr5{addrman->GetAddr(/*max_addresses=*/0, /*max_pct=*/0, /*network=*/std::nullopt)};
BOOST_CHECK_EQUAL(vAddr5.size(), 1U);
BOOST_CHECK_EQUAL(vAddr5.at(0).nServices, NODE_NETWORK);
// Adding service flags even works when the addr is in Tried
BOOST_CHECK(!addrman->Add({addr_v2}, source));
std::vector<CAddress> vAddr6{addrman->GetAddr(/*max_addresses=*/0, /*max_pct=*/0, /*network=*/std::nullopt)};
BOOST_CHECK_EQUAL(vAddr6.size(), 1U);
BOOST_CHECK_EQUAL(vAddr6.at(0).nServices, NODE_NETWORK | NODE_P2P_V2);
}
BOOST_AUTO_TEST_CASE(addrman_size)