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98 lines
3.7 KiB
98 lines
3.7 KiB
#!/usr/bin/env python3
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# Copyright (c) 2021 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test compact blocks HB selection logic."""
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import assert_equal
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class CompactBlocksConnectionTest(BitcoinTestFramework):
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"""Test class for verifying selection of HB peer connections."""
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def set_test_params(self):
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self.setup_clean_chain = True
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self.num_nodes = 6
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def peer_info(self, from_node, to_node):
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"""Query from_node for its getpeerinfo about to_node."""
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for peerinfo in self.nodes[from_node].getpeerinfo():
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if "(testnode%i)" % to_node in peerinfo['subver']:
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return peerinfo
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return None
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def setup_network(self):
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self.setup_nodes()
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# Start network with everyone disconnected
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self.sync_all()
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def relay_block_through(self, peer):
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"""Relay a new block through peer peer, and return HB status between 1 and [2,3,4,5]."""
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self.connect_nodes(peer, 0)
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self.generate(self.nodes[0], 1)
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self.sync_blocks()
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self.disconnect_nodes(peer, 0)
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status_to = [self.peer_info(1, i)['bip152_hb_to'] for i in range(2, 6)]
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status_from = [self.peer_info(i, 1)['bip152_hb_from'] for i in range(2, 6)]
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assert_equal(status_to, status_from)
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return status_to
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def run_test(self):
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self.log.info("Testing reserved high-bandwidth mode slot for outbound peer...")
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# Connect everyone to node 0, and mine some blocks to get all nodes out of IBD.
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for i in range(1, 6):
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self.connect_nodes(i, 0)
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self.generate(self.nodes[0], 2)
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self.sync_blocks()
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for i in range(1, 6):
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self.disconnect_nodes(i, 0)
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# Construct network topology:
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# - Node 0 is the block producer
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# - Node 1 is the "target" node being tested
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# - Nodes 2-5 are intermediaries.
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# - Node 1 has an outbound connection to node 2
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# - Node 1 has inbound connections from nodes 3-5
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self.connect_nodes(3, 1)
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self.connect_nodes(4, 1)
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self.connect_nodes(5, 1)
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self.connect_nodes(1, 2)
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# Mine blocks subsequently relaying through nodes 3,4,5 (inbound to node 1)
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for nodeid in range(3, 6):
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status = self.relay_block_through(nodeid)
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assert_equal(status, [False, nodeid >= 3, nodeid >= 4, nodeid >= 5])
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# And again through each. This should not change HB status.
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for nodeid in range(3, 6):
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status = self.relay_block_through(nodeid)
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assert_equal(status, [False, True, True, True])
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# Now relay one block through peer 2 (outbound from node 1), so it should take HB status
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# from one of the inbounds.
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status = self.relay_block_through(2)
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assert_equal(status[0], True)
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assert_equal(sum(status), 3)
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# Now relay again through nodes 3,4,5. Since 2 is outbound, it should remain HB.
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for nodeid in range(3, 6):
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status = self.relay_block_through(nodeid)
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assert status[0]
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assert status[nodeid - 2]
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assert_equal(sum(status), 3)
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# Reconnect peer 2, and retry. Now the three inbounds should be HB again.
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self.disconnect_nodes(1, 2)
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self.connect_nodes(1, 2)
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for nodeid in range(3, 6):
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status = self.relay_block_through(nodeid)
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assert not status[0]
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assert status[nodeid - 2]
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assert_equal(status, [False, True, True, True])
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if __name__ == '__main__':
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CompactBlocksConnectionTest().main()
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