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77 lines
3.5 KiB
77 lines
3.5 KiB
#!/usr/bin/env python3
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# Copyright (c) 2014-2021 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 longpolling with getblocktemplate."""
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import random
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import threading
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import get_rpc_proxy
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from test_framework.wallet import MiniWallet
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class LongpollThread(threading.Thread):
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def __init__(self, node):
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threading.Thread.__init__(self)
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# query current longpollid
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template = node.getblocktemplate({'rules': ['segwit']})
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self.longpollid = template['longpollid']
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# create a new connection to the node, we can't use the same
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# connection from two threads
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self.node = get_rpc_proxy(node.url, 1, timeout=600, coveragedir=node.coverage_dir)
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def run(self):
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self.node.getblocktemplate({'longpollid': self.longpollid, 'rules': ['segwit']})
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class GetBlockTemplateLPTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 2
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self.supports_cli = False
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def run_test(self):
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self.log.info("Warning: this test will take about 70 seconds in the best case. Be patient.")
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self.log.info("Test that longpollid doesn't change between successive getblocktemplate() invocations if nothing else happens")
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self.generate(self.nodes[0], 10)
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template = self.nodes[0].getblocktemplate({'rules': ['segwit']})
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longpollid = template['longpollid']
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template2 = self.nodes[0].getblocktemplate({'rules': ['segwit']})
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assert template2['longpollid'] == longpollid
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self.log.info("Test that longpoll waits if we do nothing")
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thr = LongpollThread(self.nodes[0])
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with self.nodes[0].assert_debug_log(["ThreadRPCServer method=getblocktemplate"], timeout=3):
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thr.start()
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# check that thread still lives
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thr.join(5) # wait 5 seconds or until thread exits
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assert thr.is_alive()
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self.miniwallet = MiniWallet(self.nodes[0])
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self.log.info("Test that longpoll will terminate if another node generates a block")
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self.generate(self.nodes[1], 1) # generate a block on another node
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# check that thread will exit now that new transaction entered mempool
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thr.join(5) # wait 5 seconds or until thread exits
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assert not thr.is_alive()
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self.log.info("Test that longpoll will terminate if we generate a block ourselves")
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thr = LongpollThread(self.nodes[0])
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with self.nodes[0].assert_debug_log(["ThreadRPCServer method=getblocktemplate"], timeout=3):
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thr.start()
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self.generate(self.nodes[0], 1) # generate a block on own node
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thr.join(5) # wait 5 seconds or until thread exits
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assert not thr.is_alive()
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self.log.info("Test that introducing a new transaction into the mempool will terminate the longpoll")
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thr = LongpollThread(self.nodes[0])
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with self.nodes[0].assert_debug_log(["ThreadRPCServer method=getblocktemplate"], timeout=3):
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thr.start()
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# generate a transaction and submit it
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self.miniwallet.send_self_transfer(from_node=random.choice(self.nodes))
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# after one minute, every 10 seconds the mempool is probed, so in 80 seconds it should have returned
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thr.join(60 + 20)
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assert not thr.is_alive()
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if __name__ == '__main__':
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GetBlockTemplateLPTest(__file__).main()
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