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181 lines
8.0 KiB
Python
Executable File
181 lines
8.0 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2015-2021 The Dash 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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'''
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feature_llmq_chainlocks.py
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Checks LLMQs based ChainLocks
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'''
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import time
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from test_framework.test_framework import DashTestFramework
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from test_framework.util import connect_nodes, isolate_node, reconnect_isolated_node
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class LLMQChainLocksTest(DashTestFramework):
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def set_test_params(self):
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self.set_dash_test_params(4, 3, fast_dip3_enforcement=True)
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def run_test(self):
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# Connect all nodes to node1 so that we always have the whole network connected
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# Otherwise only masternode connections will be established between nodes, which won't propagate TXs/blocks
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# Usually node0 is the one that does this, but in this test we isolate it multiple times
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for i in range(len(self.nodes)):
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if i != 1:
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connect_nodes(self.nodes[i], 1)
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self.activate_dip8()
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self.nodes[0].spork("SPORK_17_QUORUM_DKG_ENABLED", 0)
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self.wait_for_sporks_same()
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self.log.info("Mining 4 quorums")
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for i in range(4):
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self.mine_quorum()
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self.log.info("Mine single block, wait for chainlock")
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self.nodes[0].generate(1)
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self.wait_for_chainlocked_block_all_nodes(self.nodes[0].getbestblockhash())
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self.log.info("Mine many blocks, wait for chainlock")
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self.nodes[0].generate(20)
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# We need more time here due to 20 blocks being generated at once
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self.wait_for_chainlocked_block_all_nodes(self.nodes[0].getbestblockhash(), timeout=30)
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self.log.info("Assert that all blocks up until the tip are chainlocked")
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for h in range(1, self.nodes[0].getblockcount()):
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block = self.nodes[0].getblock(self.nodes[0].getblockhash(h))
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assert block['chainlock']
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self.log.info("Isolate node, mine on another, and reconnect")
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isolate_node(self.nodes[0])
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node0_mining_addr = self.nodes[0].getnewaddress()
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node0_tip = self.nodes[0].getbestblockhash()
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self.nodes[1].generatetoaddress(5, node0_mining_addr)
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self.wait_for_chainlocked_block(self.nodes[1], self.nodes[1].getbestblockhash())
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assert self.nodes[0].getbestblockhash() == node0_tip
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reconnect_isolated_node(self.nodes[0], 1)
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self.nodes[1].generatetoaddress(1, node0_mining_addr)
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self.wait_for_chainlocked_block_all_nodes(self.nodes[1].getbestblockhash())
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self.log.info("Isolate node, mine on both parts of the network, and reconnect")
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isolate_node(self.nodes[0])
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bad_tip = self.nodes[0].generate(5)[-1]
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self.nodes[1].generatetoaddress(1, node0_mining_addr)
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good_tip = self.nodes[1].getbestblockhash()
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self.wait_for_chainlocked_block(self.nodes[1], good_tip)
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assert not self.nodes[0].getblock(self.nodes[0].getbestblockhash())["chainlock"]
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reconnect_isolated_node(self.nodes[0], 1)
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self.nodes[1].generatetoaddress(1, node0_mining_addr)
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self.wait_for_chainlocked_block_all_nodes(self.nodes[1].getbestblockhash())
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assert self.nodes[0].getblock(self.nodes[0].getbestblockhash())["previousblockhash"] == good_tip
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assert self.nodes[1].getblock(self.nodes[1].getbestblockhash())["previousblockhash"] == good_tip
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self.log.info("The tip mined while this node was isolated should be marked conflicting now")
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found = False
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for tip in self.nodes[0].getchaintips(2):
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if tip["hash"] == bad_tip:
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assert tip["status"] == "conflicting"
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found = True
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break
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assert found
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self.log.info("Keep node connected and let it try to reorg the chain")
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good_tip = self.nodes[0].getbestblockhash()
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self.log.info("Restart it so that it forgets all the chainlock messages from the past")
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self.stop_node(0)
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self.start_node(0)
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connect_nodes(self.nodes[0], 1)
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assert self.nodes[0].getbestblockhash() == good_tip
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self.nodes[0].invalidateblock(good_tip)
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self.log.info("Now try to reorg the chain")
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self.nodes[0].generate(2)
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time.sleep(6)
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assert self.nodes[1].getbestblockhash() == good_tip
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bad_tip = self.nodes[0].generate(2)[-1]
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time.sleep(6)
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assert self.nodes[0].getbestblockhash() == bad_tip
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assert self.nodes[1].getbestblockhash() == good_tip
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self.log.info("Now let the node which is on the wrong chain reorg back to the locked chain")
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self.nodes[0].reconsiderblock(good_tip)
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assert self.nodes[0].getbestblockhash() != good_tip
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good_fork = good_tip
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good_tip = self.nodes[1].generatetoaddress(1, node0_mining_addr)[-1] # this should mark bad_tip as conflicting
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self.wait_for_chainlocked_block_all_nodes(good_tip)
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assert self.nodes[0].getbestblockhash() == good_tip
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found = False
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for tip in self.nodes[0].getchaintips(2):
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if tip["hash"] == bad_tip:
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assert tip["status"] == "conflicting"
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found = True
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break
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assert found
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self.log.info("Should switch to the best non-conflicting tip (not to the most work chain) on restart")
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assert int(self.nodes[0].getblock(bad_tip)["chainwork"], 16) > int(self.nodes[1].getblock(good_tip)["chainwork"], 16)
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self.stop_node(0)
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self.start_node(0)
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self.nodes[0].invalidateblock(good_fork)
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self.stop_node(0)
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self.start_node(0)
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time.sleep(1)
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assert self.nodes[0].getbestblockhash() == good_tip
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self.log.info("Isolate a node and let it create some transactions which won't get IS locked")
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isolate_node(self.nodes[0])
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txs = []
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for i in range(3):
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txs.append(self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1))
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txs += self.create_chained_txs(self.nodes[0], 1)
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self.log.info("Assert that after block generation these TXs are NOT included (as they are \"unsafe\")")
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node0_tip = self.nodes[0].generate(1)[-1]
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for txid in txs:
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tx = self.nodes[0].getrawtransaction(txid, 1)
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assert "confirmations" not in tx
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time.sleep(1)
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node0_tip_block = self.nodes[0].getblock(node0_tip)
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assert not node0_tip_block["chainlock"]
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assert node0_tip_block["previousblockhash"] == good_tip
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self.log.info("Disable LLMQ based InstantSend for a very short time (this never gets propagated to other nodes)")
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self.nodes[0].spork("SPORK_2_INSTANTSEND_ENABLED", 4070908800)
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self.log.info("Now the TXs should be included")
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self.nodes[0].generate(1)
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self.nodes[0].spork("SPORK_2_INSTANTSEND_ENABLED", 0)
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self.log.info("Assert that TXs got included now")
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for txid in txs:
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tx = self.nodes[0].getrawtransaction(txid, 1)
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assert "confirmations" in tx and tx["confirmations"] > 0
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# Enable network on first node again, which will cause the blocks to propagate and IS locks to happen retroactively
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# for the mined TXs, which will then allow the network to create a CLSIG
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self.log.info("Re-enable network on first node and wait for chainlock")
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reconnect_isolated_node(self.nodes[0], 1)
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self.wait_for_chainlocked_block(self.nodes[0], self.nodes[0].getbestblockhash(), timeout=30)
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def create_chained_txs(self, node, amount):
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txid = node.sendtoaddress(node.getnewaddress(), amount)
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tx = node.getrawtransaction(txid, 1)
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inputs = []
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valueIn = 0
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for txout in tx["vout"]:
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inputs.append({"txid": txid, "vout": txout["n"]})
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valueIn += txout["value"]
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outputs = {
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node.getnewaddress(): round(float(valueIn) - 0.0001, 6)
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}
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rawtx = node.createrawtransaction(inputs, outputs)
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rawtx = node.signrawtransactionwithwallet(rawtx)
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rawtxid = node.sendrawtransaction(rawtx["hex"])
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return [txid, rawtxid]
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if __name__ == '__main__':
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LLMQChainLocksTest().main()
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