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merge bitcoin#28895: do not make automatic outbound connections to addnode peers

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Kittywhiskers Van Gogh 2023-11-16 09:56:03 -06:00
parent 6cf206ca0e
commit 09504bdd1f
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3 changed files with 30 additions and 0 deletions
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22
src/net.cpp
View File

@ -3547,6 +3547,17 @@ void CConnman::ThreadOpenConnections(const std::vector<std::string> connect, CDe
continue;
}
// Do not make automatic outbound connections to addnode peers, to
// not use our limited outbound slots for them and to ensure
// addnode connections benefit from their intended protections.
if (AddedNodesContain(addr)) {
LogPrint(BCLog::NET, "Not making automatic %s%s connection to %s peer selected for manual (addnode) connection%s\n",
preferred_net.has_value() ? "network-specific " : "",
ConnectionTypeAsString(conn_type), GetNetworkName(addr.GetNetwork()),
fLogIPs ? strprintf(": %s", addr.ToStringAddrPort()) : "");
continue;
}
addrConnect = addr;
break;
}
@ -4581,6 +4592,17 @@ bool CConnman::RemoveAddedNode(const std::string& strNode)
return false;
}
bool CConnman::AddedNodesContain(const CAddress& addr) const
{
AssertLockNotHeld(m_added_nodes_mutex);
const std::string addr_str{addr.ToStringAddr()};
const std::string addr_port_str{addr.ToStringAddrPort()};
LOCK(m_added_nodes_mutex);
return (m_added_node_params.size() < 24 // bound the query to a reasonable limit
&& std::any_of(m_added_node_params.cbegin(), m_added_node_params.cend(),
[&](const auto& p) { return p.m_added_node == addr_str || p.m_added_node == addr_port_str; }));
}
bool CConnman::AddPendingMasternode(const uint256& proTxHash)
{
LOCK(cs_vPendingMasternodes);

1
src/net.h
View File

@ -1481,6 +1481,7 @@ public:
bool AddNode(const AddedNodeParams& add) EXCLUSIVE_LOCKS_REQUIRED(!m_added_nodes_mutex);
bool RemoveAddedNode(const std::string& node) EXCLUSIVE_LOCKS_REQUIRED(!m_added_nodes_mutex);
bool AddedNodesContain(const CAddress& addr) const EXCLUSIVE_LOCKS_REQUIRED(!m_added_nodes_mutex);
std::vector<AddedNodeInfo> GetAddedNodeInfo(bool include_connected) const EXCLUSIVE_LOCKS_REQUIRED(!m_added_nodes_mutex);
/**

7
src/test/net_peer_connection_tests.cpp
View File

@ -124,6 +124,13 @@ BOOST_AUTO_TEST_CASE(test_addnode_getaddednodeinfo_and_connection_detection)
BOOST_CHECK_EQUAL(connman->GetAddedNodeInfo(/*include_connected=*/true).size(), nodes.size());
BOOST_CHECK(connman->GetAddedNodeInfo(/*include_connected=*/false).empty());
// Test AddedNodesContain()
for (auto node : connman->TestNodes()) {
BOOST_CHECK(connman->AddedNodesContain(node->addr));
}
AddPeer(id, nodes, *peerman, *connman, ConnectionType::OUTBOUND_FULL_RELAY);
BOOST_CHECK(!connman->AddedNodesContain(nodes.back()->addr));
BOOST_TEST_MESSAGE("\nPrint GetAddedNodeInfo contents:");
for (const auto& info : connman->GetAddedNodeInfo(/*include_connected=*/true)) {
BOOST_TEST_MESSAGE(strprintf("\nadded node: %s", info.m_params.m_added_node));