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131 lines
5.5 KiB
131 lines
5.5 KiB
#!/usr/bin/env python3
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# Copyright (c) 2021-2021 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 that a node in blocksonly mode does not request compact blocks."""
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from test_framework.messages import (
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MSG_BLOCK,
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MSG_CMPCT_BLOCK,
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MSG_WITNESS_FLAG,
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CBlock,
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CBlockHeader,
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CInv,
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from_hex,
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msg_block,
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msg_getdata,
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msg_headers,
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msg_sendcmpct,
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)
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from test_framework.p2p import P2PInterface
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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 P2PCompactBlocksBlocksOnly(BitcoinTestFramework):
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def set_test_params(self):
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self.extra_args = [["-blocksonly"], [], [], []]
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self.num_nodes = 4
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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 build_block_on_tip(self):
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blockhash = self.generate(self.nodes[2], 1, sync_fun=self.no_op)[0]
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block_hex = self.nodes[2].getblock(blockhash=blockhash, verbosity=0)
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block = from_hex(CBlock(), block_hex)
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block.rehash()
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return block
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def run_test(self):
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# Nodes will only request hb compact blocks mode when they're out of IBD
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for node in self.nodes:
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assert not node.getblockchaininfo()['initialblockdownload']
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p2p_conn_blocksonly = self.nodes[0].add_p2p_connection(P2PInterface())
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p2p_conn_high_bw = self.nodes[1].add_p2p_connection(P2PInterface())
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p2p_conn_low_bw = self.nodes[3].add_p2p_connection(P2PInterface())
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for conn in [p2p_conn_blocksonly, p2p_conn_high_bw, p2p_conn_low_bw]:
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assert_equal(conn.message_count['sendcmpct'], 1)
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conn.send_and_ping(msg_sendcmpct(announce=False, version=2))
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# Nodes:
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# 0 -> blocksonly
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# 1 -> high bandwidth
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# 2 -> miner
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# 3 -> low bandwidth
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#
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# Topology:
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# p2p_conn_blocksonly ---> node0
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# p2p_conn_high_bw ---> node1
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# p2p_conn_low_bw ---> node3
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# node2 (no connections)
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#
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# node2 produces blocks that are passed to the rest of the nodes
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# through the respective p2p connections.
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self.log.info("Test that -blocksonly nodes do not select peers for BIP152 high bandwidth mode")
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block0 = self.build_block_on_tip()
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# A -blocksonly node should not request BIP152 high bandwidth mode upon
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# receiving a new valid block at the tip.
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p2p_conn_blocksonly.send_and_ping(msg_block(block0))
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assert_equal(int(self.nodes[0].getbestblockhash(), 16), block0.sha256)
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assert_equal(p2p_conn_blocksonly.message_count['sendcmpct'], 1)
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assert_equal(p2p_conn_blocksonly.last_message['sendcmpct'].announce, False)
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# A normal node participating in transaction relay should request BIP152
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# high bandwidth mode upon receiving a new valid block at the tip.
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p2p_conn_high_bw.send_and_ping(msg_block(block0))
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assert_equal(int(self.nodes[1].getbestblockhash(), 16), block0.sha256)
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p2p_conn_high_bw.wait_until(lambda: p2p_conn_high_bw.message_count['sendcmpct'] == 2)
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assert_equal(p2p_conn_high_bw.last_message['sendcmpct'].announce, True)
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# Don't send a block from the p2p_conn_low_bw so the low bandwidth node
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# doesn't select it for BIP152 high bandwidth relay.
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self.nodes[3].submitblock(block0.serialize().hex())
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self.log.info("Test that -blocksonly nodes send getdata(BLOCK) instead"
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" of getdata(CMPCT) in BIP152 low bandwidth mode")
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block1 = self.build_block_on_tip()
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p2p_conn_blocksonly.send_message(msg_headers(headers=[CBlockHeader(block1)]))
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p2p_conn_blocksonly.sync_with_ping()
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assert_equal(p2p_conn_blocksonly.last_message['getdata'].inv, [CInv(MSG_BLOCK | MSG_WITNESS_FLAG, block1.sha256)])
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p2p_conn_high_bw.send_message(msg_headers(headers=[CBlockHeader(block1)]))
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p2p_conn_high_bw.sync_with_ping()
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assert_equal(p2p_conn_high_bw.last_message['getdata'].inv, [CInv(MSG_CMPCT_BLOCK, block1.sha256)])
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self.log.info("Test that getdata(CMPCT) is still sent on BIP152 low bandwidth connections"
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" when no -blocksonly nodes are involved")
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p2p_conn_low_bw.send_and_ping(msg_headers(headers=[CBlockHeader(block1)]))
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p2p_conn_low_bw.sync_with_ping()
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assert_equal(p2p_conn_low_bw.last_message['getdata'].inv, [CInv(MSG_CMPCT_BLOCK, block1.sha256)])
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self.log.info("Test that -blocksonly nodes still serve compact blocks")
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def test_for_cmpctblock(block):
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if 'cmpctblock' not in p2p_conn_blocksonly.last_message:
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return False
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return p2p_conn_blocksonly.last_message['cmpctblock'].header_and_shortids.header.rehash() == block.sha256
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p2p_conn_blocksonly.send_message(msg_getdata([CInv(MSG_CMPCT_BLOCK, block0.sha256)]))
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p2p_conn_blocksonly.wait_until(lambda: test_for_cmpctblock(block0))
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# Request BIP152 high bandwidth mode from the -blocksonly node.
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p2p_conn_blocksonly.send_and_ping(msg_sendcmpct(announce=True, version=2))
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block2 = self.build_block_on_tip()
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self.nodes[0].submitblock(block1.serialize().hex())
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self.nodes[0].submitblock(block2.serialize().hex())
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p2p_conn_blocksonly.wait_until(lambda: test_for_cmpctblock(block2))
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if __name__ == '__main__':
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P2PCompactBlocksBlocksOnly(__file__).main()
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