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91 lines
3.0 KiB
91 lines
3.0 KiB
#!/usr/bin/env python3
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# Copyright (c) 2020 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 addr response caching"""
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import time
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from test_framework.messages import msg_getaddr
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from test_framework.p2p import (
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P2PInterface,
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p2p_lock
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)
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import (
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assert_equal,
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)
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# As defined in net_processing.
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MAX_ADDR_TO_SEND = 1000
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MAX_PCT_ADDR_TO_SEND = 23
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class AddrReceiver(P2PInterface):
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def __init__(self):
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super().__init__()
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self.received_addrs = None
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def get_received_addrs(self):
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with p2p_lock:
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return self.received_addrs
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def on_addr(self, message):
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self.received_addrs = []
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for addr in message.addrs:
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self.received_addrs.append(addr.ip)
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def addr_received(self):
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return self.received_addrs is not None
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class AddrTest(BitcoinTestFramework):
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def set_test_params(self):
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self.setup_clean_chain = False
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self.num_nodes = 1
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def run_test(self):
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self.log.info('Fill peer AddrMan with a lot of records')
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for i in range(10000):
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first_octet = i >> 8
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second_octet = i % 256
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a = "{}.{}.1.1".format(first_octet, second_octet)
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self.nodes[0].addpeeraddress(a, 8333)
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# Need to make sure we hit MAX_ADDR_TO_SEND records in the addr response later because
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# only a fraction of all known addresses can be cached and returned.
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assert(len(self.nodes[0].getnodeaddresses(0)) > int(MAX_ADDR_TO_SEND / (MAX_PCT_ADDR_TO_SEND / 100)))
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responses = []
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self.log.info('Send many addr requests within short time to receive same response')
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N = 5
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cur_mock_time = int(time.time())
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for i in range(N):
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addr_receiver = self.nodes[0].add_p2p_connection(AddrReceiver())
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addr_receiver.send_and_ping(msg_getaddr())
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# Trigger response
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cur_mock_time += 5 * 60
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self.nodes[0].setmocktime(cur_mock_time)
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addr_receiver.wait_until(addr_receiver.addr_received)
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responses.append(addr_receiver.get_received_addrs())
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for response in responses[1:]:
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assert_equal(response, responses[0])
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assert(len(response) == MAX_ADDR_TO_SEND)
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cur_mock_time += 3 * 24 * 60 * 60
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self.nodes[0].setmocktime(cur_mock_time)
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self.log.info('After time passed, see a new response to addr request')
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last_addr_receiver = self.nodes[0].add_p2p_connection(AddrReceiver())
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last_addr_receiver.send_and_ping(msg_getaddr())
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# Trigger response
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cur_mock_time += 5 * 60
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self.nodes[0].setmocktime(cur_mock_time)
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last_addr_receiver.wait_until(last_addr_receiver.addr_received)
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# new response is different
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assert(set(responses[0]) != set(last_addr_receiver.get_received_addrs()))
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if __name__ == '__main__':
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AddrTest().main()
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