#!/usr/bin/env python3 # Copyright (c) 2015-2018 The Dash Core developers # Distributed under the MIT software license, see the accompanying # file COPYING or http://www.opensource.org/licenses/mit-license.php. from test_framework.mininode import * from test_framework.test_framework import DashTestFramework from test_framework.util import * from time import * ''' llmq-chainlocks.py Checks LLMQs based ChainLocks ''' class LLMQChainLocksTest(DashTestFramework): def __init__(self): super().__init__(6, 5, [], fast_dip3_enforcement=True) def run_test(self): while self.nodes[0].getblockchaininfo()["bip9_softforks"]["dip0008"]["status"] != "active": self.nodes[0].generate(10) sync_blocks(self.nodes, timeout=60*5) self.nodes[0].spork("SPORK_17_QUORUM_DKG_ENABLED", 0) self.nodes[0].spork("SPORK_19_CHAINLOCKS_ENABLED", 0) self.wait_for_sporks_same() for i in range(4): self.mine_quorum() # mine single block, wait for chainlock self.nodes[0].generate(1) self.wait_for_chainlock_tip_all_nodes() # mine many blocks, wait for chainlock self.nodes[0].generate(20) self.wait_for_chainlock_tip_all_nodes() # assert that all blocks up until the tip are chainlocked for h in range(1, self.nodes[0].getblockcount()): block = self.nodes[0].getblock(self.nodes[0].getblockhash(h)) assert(block['chainlock']) # Isolate node, mine on another, and reconnect isolate_node(self.nodes[0]) node0_tip = self.nodes[0].getbestblockhash() self.nodes[1].generate(5) self.wait_for_chainlock_tip(self.nodes[1]) assert(self.nodes[0].getbestblockhash() == node0_tip) reconnect_isolated_node(self.nodes[0], 1) self.nodes[1].generate(1) self.wait_for_chainlock(self.nodes[0], self.nodes[1].getbestblockhash()) # Isolate node, mine on both parts of the network, and reconnect isolate_node(self.nodes[0]) self.nodes[0].generate(5) self.nodes[1].generate(1) good_tip = self.nodes[1].getbestblockhash() self.wait_for_chainlock_tip(self.nodes[1]) assert(not self.nodes[0].getblock(self.nodes[0].getbestblockhash())["chainlock"]) reconnect_isolated_node(self.nodes[0], 1) self.nodes[1].generate(1) self.wait_for_chainlock(self.nodes[0], self.nodes[1].getbestblockhash()) assert(self.nodes[0].getblock(self.nodes[0].getbestblockhash())["previousblockhash"] == good_tip) assert(self.nodes[1].getblock(self.nodes[1].getbestblockhash())["previousblockhash"] == good_tip) # Keep node connected and let it try to reorg the chain good_tip = self.nodes[0].getbestblockhash() # Restart it so that it forgets all the chainlocks from the past stop_node(self.nodes[0], 0) self.nodes[0] = start_node(0, self.options.tmpdir, self.extra_args) connect_nodes(self.nodes[0], 1) self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash()) # Now try to reorg the chain self.nodes[0].generate(2) sleep(6) assert(self.nodes[1].getbestblockhash() == good_tip) self.nodes[0].generate(2) sleep(6) assert(self.nodes[1].getbestblockhash() == good_tip) # Now let the node which is on the wrong chain reorg back to the locked chain self.nodes[0].reconsiderblock(good_tip) assert(self.nodes[0].getbestblockhash() != good_tip) self.nodes[1].generate(1) self.wait_for_chainlock(self.nodes[0], self.nodes[1].getbestblockhash()) assert(self.nodes[0].getbestblockhash() == self.nodes[1].getbestblockhash()) # Enable LLMQ bases InstantSend, which also enables checks for "safe" transactions self.nodes[0].spork("SPORK_20_INSTANTSEND_LLMQ_BASED", 0) self.wait_for_sporks_same() # Isolate a node and let it create some transactions which won't get IS locked isolate_node(self.nodes[0]) txs = [] for i in range(3): txs.append(self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)) txs += self.create_chained_txs(self.nodes[0], 1) # Assert that after block generation these TXs are NOT included (as they are "unsafe") self.nodes[0].generate(1) for txid in txs: tx = self.nodes[0].getrawtransaction(txid, 1) assert("confirmations" not in tx) sleep(1) assert(not self.nodes[0].getblock(self.nodes[0].getbestblockhash())["chainlock"]) # Disable LLMQ based InstantSend for a very short time (this never gets propagated to other nodes) self.nodes[0].spork("SPORK_20_INSTANTSEND_LLMQ_BASED", 4070908800) # Now the TXs should be included self.nodes[0].generate(1) self.nodes[0].spork("SPORK_20_INSTANTSEND_LLMQ_BASED", 0) # Assert that TXs got included now for txid in txs: tx = self.nodes[0].getrawtransaction(txid, 1) assert("confirmations" in tx and tx["confirmations"] > 0) # Enable network on first node again, which will cause the blocks to propagate and IS locks to happen retroactively # for the mined TXs, which will then allow the network to create a CLSIG reconnect_isolated_node(self.nodes[0], 1) self.wait_for_chainlock(self.nodes[0], self.nodes[1].getbestblockhash()) def wait_for_chainlock_tip_all_nodes(self): for node in self.nodes: tip = node.getbestblockhash() self.wait_for_chainlock(node, tip) def wait_for_chainlock_tip(self, node): tip = node.getbestblockhash() self.wait_for_chainlock(node, tip) def wait_for_chainlock(self, node, block_hash): t = time() while time() - t < 15: try: block = node.getblock(block_hash) if block["confirmations"] > 0 and block["chainlock"]: return except: # block might not be on the node yet pass sleep(0.1) raise AssertionError("wait_for_chainlock timed out") def create_chained_txs(self, node, amount): txid = node.sendtoaddress(node.getnewaddress(), amount) tx = node.getrawtransaction(txid, 1) inputs = [] valueIn = 0 for txout in tx["vout"]: inputs.append({"txid": txid, "vout": txout["n"]}) valueIn += txout["value"] outputs = { node.getnewaddress(): round(float(valueIn) - 0.0001, 6) } rawtx = node.createrawtransaction(inputs, outputs) rawtx = node.signrawtransaction(rawtx) rawtxid = node.sendrawtransaction(rawtx["hex"]) return [txid, rawtxid] if __name__ == '__main__': LLMQChainLocksTest().main()