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merge bitcoin#22604: address rate-limiting follow-ups
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60b3e08ed1
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06e909b737
@ -181,7 +181,7 @@ static constexpr size_t MAX_ADDR_TO_SEND{1000};
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static constexpr double MAX_ADDR_RATE_PER_SECOND{0.1};
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/** The soft limit of the address processing token bucket (the regular MAX_ADDR_RATE_PER_SECOND
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* based increments won't go above this, but the MAX_ADDR_TO_SEND increment following GETADDR
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* is exempt from this limit. */
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* is exempt from this limit). */
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static constexpr size_t MAX_ADDR_PROCESSING_TOKEN_BUCKET{MAX_ADDR_TO_SEND};
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struct COrphanTx {
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@ -302,14 +302,14 @@ struct Peer {
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std::atomic_bool m_wants_addrv2{false};
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/** Whether this peer has already sent us a getaddr message. */
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bool m_getaddr_recvd{false};
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/** Number of addr messages that can be processed from this peer. Start at 1 to
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/** Number of addresses that can be processed from this peer. Start at 1 to
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* permit self-announcement. */
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double m_addr_token_bucket{1.0};
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/** When m_addr_token_bucket was last updated */
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std::chrono::microseconds m_addr_token_timestamp{GetTime<std::chrono::microseconds>()};
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/** Total number of addresses that were dropped due to rate limiting. */
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std::atomic<uint64_t> m_addr_rate_limited{0};
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/** Total number of addresses that were processed (excludes rate limited ones). */
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/** Total number of addresses that were processed (excludes rate-limited ones). */
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std::atomic<uint64_t> m_addr_processed{0};
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/** Set of txids to reconsider once their parent transactions have been accepted **/
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@ -3455,11 +3455,12 @@ void PeerManagerImpl::ProcessMessage(
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return;
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// Apply rate limiting.
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if (rate_limited) {
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if (peer->m_addr_token_bucket < 1.0) {
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if (peer->m_addr_token_bucket < 1.0) {
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if (rate_limited) {
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++num_rate_limit;
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continue;
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}
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} else {
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peer->m_addr_token_bucket -= 1.0;
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}
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// We only bother storing full nodes, though this may include
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@ -3487,12 +3488,8 @@ void PeerManagerImpl::ProcessMessage(
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}
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peer->m_addr_processed += num_proc;
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peer->m_addr_rate_limited += num_rate_limit;
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LogPrint(BCLog::NET, "Received addr: %u addresses (%u processed, %u rate-limited) from peer=%d%s\n",
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vAddr.size(),
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num_proc,
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num_rate_limit,
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pfrom.GetId(),
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fLogIPs ? ", peeraddr=" + pfrom.addr.ToString() : "");
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LogPrint(BCLog::NET, "Received addr: %u addresses (%u processed, %u rate-limited) from peer=%d\n",
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vAddr.size(), num_proc, num_rate_limit, pfrom.GetId());
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m_addrman.Add(vAddrOk, pfrom.addr, 2 * 60 * 60);
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if (vAddr.size() < 1000) peer->m_getaddr_sent = false;
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@ -146,6 +146,8 @@ static RPCHelpMan getpeerinfo()
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{RPCResult::Type::NUM, "n", "The heights of blocks we're currently asking from this peer"},
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}},
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{RPCResult::Type::BOOL, "addr_relay_enabled", "Whether we participate in address relay with this peer"},
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{RPCResult::Type::NUM, "addr_processed", "The total number of addresses processed, excluding those dropped due to rate limiting"},
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{RPCResult::Type::NUM, "addr_rate_limited", "The total number of addresses dropped due to rate limiting"},
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{RPCResult::Type::BOOL, "whitelisted", "Whether the peer is whitelisted"},
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{RPCResult::Type::ARR, "permissions", "Any special permissions that have been granted to this peer",
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{
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@ -306,7 +306,7 @@ class AddrTest(BitcoinTestFramework):
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self.nodes[0].disconnect_p2ps()
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def send_addrs_and_test_rate_limiting(self, peer, no_relay, new_addrs, total_addrs):
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def send_addrs_and_test_rate_limiting(self, peer, no_relay, *, new_addrs, total_addrs):
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"""Send an addr message and check that the number of addresses processed and rate-limited is as expected"""
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peer.send_and_ping(self.setup_rand_addr_msg(new_addrs))
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@ -324,41 +324,41 @@ class AddrTest(BitcoinTestFramework):
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assert_equal(addrs_rate_limited, max(0, total_addrs - peer.tokens))
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def rate_limit_tests(self):
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self.restart_node(0, [])
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for contype, no_relay in [("outbound-full-relay", False), ("block-relay-only", True), ("inbound", False)]:
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self.log.info(f'Test rate limiting of addr processing for {contype} peers')
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if contype == "inbound":
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for conn_type, no_relay in [("outbound-full-relay", False), ("block-relay-only", True), ("inbound", False)]:
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self.log.info(f'Test rate limiting of addr processing for {conn_type} peers')
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if conn_type == "inbound":
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peer = self.nodes[0].add_p2p_connection(AddrReceiver())
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else:
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peer = self.nodes[0].add_outbound_p2p_connection(AddrReceiver(), p2p_idx=0, connection_type=contype)
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peer = self.nodes[0].add_outbound_p2p_connection(AddrReceiver(), p2p_idx=0, connection_type=conn_type)
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# Send 600 addresses. For all but the block-relay-only peer this should result in addresses being processed.
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self.send_addrs_and_test_rate_limiting(peer, no_relay, 600, 600)
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self.send_addrs_and_test_rate_limiting(peer, no_relay, new_addrs=600, total_addrs=600)
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# Send 600 more addresses. For the outbound-full-relay peer (which we send a GETADDR, and thus will
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# process up to 1001 incoming addresses), this means more addresses will be processed.
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self.send_addrs_and_test_rate_limiting(peer, no_relay, 600, 1200)
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self.send_addrs_and_test_rate_limiting(peer, no_relay, new_addrs=600, total_addrs=1200)
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# Send 10 more. As we reached the processing limit for all nodes, no more addresses should be procesesd.
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self.send_addrs_and_test_rate_limiting(peer, no_relay, 10, 1210)
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self.send_addrs_and_test_rate_limiting(peer, no_relay, new_addrs=10, total_addrs=1210)
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# Advance the time by 100 seconds, permitting the processing of 10 more addresses.
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# Send 200 and verify that 10 are processed.
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self.bump_mocktime(100)
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peer.increment_tokens(10)
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self.send_addrs_and_test_rate_limiting(peer, no_relay, 200, 1410)
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self.send_addrs_and_test_rate_limiting(peer, no_relay, new_addrs=200, total_addrs=1410)
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# Advance the time by 1000 seconds, permitting the processing of 100 more addresses.
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# Send 200 and verify that 100 are processed.
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self.bump_mocktime(1000)
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peer.increment_tokens(100)
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self.send_addrs_and_test_rate_limiting(peer, no_relay, 200, 1610)
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self.send_addrs_and_test_rate_limiting(peer, no_relay, new_addrs=200, total_addrs=1610)
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self.nodes[0].disconnect_p2ps()
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if __name__ == '__main__':
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AddrTest().main()
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