0025c9eae4
Calling getblocktemplate without the segwit rule specified is most likely a client error, since it results in lower fees for the miner. Prevent this client error by failing getblocktemplate if called without the segwit rule specified.
75 lines
3.2 KiB
Python
Executable file
75 lines
3.2 KiB
Python
Executable file
#!/usr/bin/env python3
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# Copyright (c) 2014-2018 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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from decimal import Decimal
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import get_rpc_proxy, random_transaction
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import threading
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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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def skip_test_if_missing_module(self):
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self.skip_if_no_wallet()
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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.nodes[0].generate(10)
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template = self.nodes[0].getblocktemplate({'rules': ['segwit']})
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longpollid = template['longpollid']
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# longpollid should not change between successive invocations if nothing else happens
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template2 = self.nodes[0].getblocktemplate({'rules': ['segwit']})
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assert(template2['longpollid'] == longpollid)
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# Test 1: test that the longpolling wait if we do nothing
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thr = LongpollThread(self.nodes[0])
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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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# Test 2: test that longpoll will terminate if another node generates a block
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self.nodes[1].generate(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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# Test 3: test that longpoll will terminate if we generate a block ourselves
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thr = LongpollThread(self.nodes[0])
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thr.start()
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self.nodes[0].generate(1) # generate a block on another 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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# Test 4: 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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thr.start()
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# generate a random transaction and submit it
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min_relay_fee = self.nodes[0].getnetworkinfo()["relayfee"]
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# min_relay_fee is fee per 1000 bytes, which should be more than enough.
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(txid, txhex, fee) = random_transaction(self.nodes, Decimal("1.1"), min_relay_fee, Decimal("0.001"), 20)
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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().main()
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