git / moonbite-core / test/functional/mempool_packages.py · raw
#!/usr/bin/env python3# Copyright (c) 2014-2019 The Bitcoin Core developers# Distributed under the MIT software license, see the accompanying# file COPYING or http://www.opensource.org/licenses/mit-license.php."""Test descendant package tracking code."""from decimal import Decimalfrom test_framework.messages import COINfrom test_framework.p2p import P2PTxInvStorefrom test_framework.test_framework import BitcoinTestFrameworkfrom test_framework.util import ( assert_equal, assert_raises_rpc_error, satoshi_round,)# default limitsMAX_ANCESTORS = 25MAX_DESCENDANTS = 25# custom limits for node1MAX_ANCESTORS_CUSTOM = 5MAX_DESCENDANTS_CUSTOM = 10assert MAX_DESCENDANTS_CUSTOM >= MAX_ANCESTORS_CUSTOMclass MempoolPackagesTest(BitcoinTestFramework): def set_test_params(self): self.num_nodes = 2 self.extra_args = [ [ "-maxorphantx=1000", "-whitelist=noban@127.0.0.1", # immediate tx relay ], [ "-maxorphantx=1000", "-limitancestorcount={}".format(MAX_ANCESTORS_CUSTOM), "-limitdescendantcount={}".format(MAX_DESCENDANTS_CUSTOM), ], ] def skip_test_if_missing_module(self): self.skip_if_no_wallet() # Build a transaction that spends parent_txid:vout # Return amount sent def chain_transaction(self, node, parent_txid, vout, value, fee, num_outputs): send_value = satoshi_round((value - fee)/num_outputs) inputs = [ {'txid' : parent_txid, 'vout' : vout} ] outputs = {} for _ in range(num_outputs): outputs[node.getnewaddress()] = send_value rawtx = node.createrawtransaction(inputs, outputs) signedtx = node.signrawtransactionwithwallet(rawtx) txid = node.sendrawtransaction(signedtx['hex']) fulltx = node.getrawtransaction(txid, 1) assert len(fulltx['vout']) == num_outputs # make sure we didn't generate a change output return (txid, send_value) def run_test(self): # Mine some blocks and have them mature. peer_inv_store = self.nodes[0].add_p2p_connection(P2PTxInvStore()) # keep track of invs self.nodes[0].generate(101) utxo = self.nodes[0].listunspent(10) txid = utxo[0]['txid'] vout = utxo[0]['vout'] value = utxo[0]['amount'] fee = Decimal("0.0001") # MAX_ANCESTORS transactions off a confirmed tx should be fine chain = [] witness_chain = [] for _ in range(MAX_ANCESTORS): (txid, sent_value) = self.chain_transaction(self.nodes[0], txid, 0, value, fee, 1) value = sent_value chain.append(txid) # We need the wtxids to check P2P announcements fulltx = self.nodes[0].getrawtransaction(txid) witnesstx = self.nodes[0].decoderawtransaction(fulltx, True) witness_chain.append(witnesstx['hash']) # Wait until mempool transactions have passed initial broadcast (sent inv and received getdata) # Otherwise, getrawmempool may be inconsistent with getmempoolentry if unbroadcast changes in between peer_inv_store.wait_for_broadcast(witness_chain) # Check mempool has MAX_ANCESTORS transactions in it, and descendant and ancestor # count and fees should look correct mempool = self.nodes[0].getrawmempool(True) assert_equal(len(mempool), MAX_ANCESTORS) descendant_count = 1 descendant_fees = 0 descendant_vsize = 0 ancestor_vsize = sum([mempool[tx]['vsize'] for tx in mempool]) ancestor_count = MAX_ANCESTORS ancestor_fees = sum([mempool[tx]['fee'] for tx in mempool]) descendants = [] ancestors = list(chain) for x in reversed(chain): # Check that getmempoolentry is consistent with getrawmempool entry = self.nodes[0].getmempoolentry(x) assert_equal(entry, mempool[x]) # Check that the descendant calculations are correct assert_equal(mempool[x]['descendantcount'], descendant_count) descendant_fees += mempool[x]['fee'] assert_equal(mempool[x]['modifiedfee'], mempool[x]['fee']) assert_equal(mempool[x]['fees']['base'], mempool[x]['fee']) assert_equal(mempool[x]['fees']['modified'], mempool[x]['modifiedfee']) assert_equal(mempool[x]['descendantfees'], descendant_fees * COIN) assert_equal(mempool[x]['fees']['descendant'], descendant_fees) descendant_vsize += mempool[x]['vsize'] assert_equal(mempool[x]['descendantsize'], descendant_vsize) descendant_count += 1 # Check that ancestor calculations are correct assert_equal(mempool[x]['ancestorcount'], ancestor_count) assert_equal(mempool[x]['ancestorfees'], ancestor_fees * COIN) assert_equal(mempool[x]['ancestorsize'], ancestor_vsize) ancestor_vsize -= mempool[x]['vsize'] ancestor_fees -= mempool[x]['fee'] ancestor_count -= 1 # Check that parent/child list is correct assert_equal(mempool[x]['spentby'], descendants[-1:]) assert_equal(mempool[x]['depends'], ancestors[-2:-1]) # Check that getmempooldescendants is correct assert_equal(sorted(descendants), sorted(self.nodes[0].getmempooldescendants(x))) # Check getmempooldescendants verbose output is correct for descendant, dinfo in self.nodes[0].getmempooldescendants(x, True).items(): assert_equal(dinfo['depends'], [chain[chain.index(descendant)-1]]) if dinfo['descendantcount'] > 1: assert_equal(dinfo['spentby'], [chain[chain.index(descendant)+1]]) else: assert_equal(dinfo['spentby'], []) descendants.append(x) # Check that getmempoolancestors is correct ancestors.remove(x) assert_equal(sorted(ancestors), sorted(self.nodes[0].getmempoolancestors(x))) # Check that getmempoolancestors verbose output is correct for ancestor, ainfo in self.nodes[0].getmempoolancestors(x, True).items(): assert_equal(ainfo['spentby'], [chain[chain.index(ancestor)+1]]) if ainfo['ancestorcount'] > 1: assert_equal(ainfo['depends'], [chain[chain.index(ancestor)-1]]) else: assert_equal(ainfo['depends'], []) # Check that getmempoolancestors/getmempooldescendants correctly handle verbose=true v_ancestors = self.nodes[0].getmempoolancestors(chain[-1], True) assert_equal(len(v_ancestors), len(chain)-1) for x in v_ancestors.keys(): assert_equal(mempool[x], v_ancestors[x]) assert chain[-1] not in v_ancestors.keys() v_descendants = self.nodes[0].getmempooldescendants(chain[0], True) assert_equal(len(v_descendants), len(chain)-1) for x in v_descendants.keys(): assert_equal(mempool[x], v_descendants[x]) assert chain[0] not in v_descendants.keys() # Check that ancestor modified fees includes fee deltas from # prioritisetransaction self.nodes[0].prioritisetransaction(txid=chain[0], fee_delta=1000) mempool = self.nodes[0].getrawmempool(True) ancestor_fees = 0 for x in chain: ancestor_fees += mempool[x]['fee'] assert_equal(mempool[x]['fees']['ancestor'], ancestor_fees + Decimal('0.00001')) assert_equal(mempool[x]['ancestorfees'], ancestor_fees * COIN + 1000) # Undo the prioritisetransaction for later tests self.nodes[0].prioritisetransaction(txid=chain[0], fee_delta=-1000) # Check that descendant modified fees includes fee deltas from # prioritisetransaction self.nodes[0].prioritisetransaction(txid=chain[-1], fee_delta=1000) mempool = self.nodes[0].getrawmempool(True) descendant_fees = 0 for x in reversed(chain): descendant_fees += mempool[x]['fee'] assert_equal(mempool[x]['fees']['descendant'], descendant_fees + Decimal('0.00001')) assert_equal(mempool[x]['descendantfees'], descendant_fees * COIN + 1000) # Adding one more transaction on to the chain should fail. assert_raises_rpc_error(-26, "too-long-mempool-chain", self.chain_transaction, self.nodes[0], txid, vout, value, fee, 1) # Check that prioritising a tx before it's added to the mempool works # First clear the mempool by mining a block. self.nodes[0].generate(1) self.sync_blocks() assert_equal(len(self.nodes[0].getrawmempool()), 0) # Prioritise a transaction that has been mined, then add it back to the # mempool by using invalidateblock. self.nodes[0].prioritisetransaction(txid=chain[-1], fee_delta=2000) self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash()) # Keep node1's tip synced with node0 self.nodes[1].invalidateblock(self.nodes[1].getbestblockhash()) # Now check that the transaction is in the mempool, with the right modified fee mempool = self.nodes[0].getrawmempool(True) descendant_fees = 0 for x in reversed(chain): descendant_fees += mempool[x]['fee'] if (x == chain[-1]): assert_equal(mempool[x]['modifiedfee'], mempool[x]['fee']+satoshi_round(0.00002)) assert_equal(mempool[x]['fees']['modified'], mempool[x]['fee']+satoshi_round(0.00002)) assert_equal(mempool[x]['descendantfees'], descendant_fees * COIN + 2000) assert_equal(mempool[x]['fees']['descendant'], descendant_fees+satoshi_round(0.00002)) # Check that node1's mempool is as expected (-> custom ancestor limit) mempool0 = self.nodes[0].getrawmempool(False) mempool1 = self.nodes[1].getrawmempool(False) assert_equal(len(mempool1), MAX_ANCESTORS_CUSTOM) assert set(mempool1).issubset(set(mempool0)) for tx in chain[:MAX_ANCESTORS_CUSTOM]: assert tx in mempool1 # TODO: more detailed check of node1's mempool (fees etc.) # check transaction unbroadcast info (should be false if in both mempools) mempool = self.nodes[0].getrawmempool(True) for tx in mempool: assert_equal(mempool[tx]['unbroadcast'], False) # TODO: test ancestor size limits # Now test descendant chain limits txid = utxo[1]['txid'] value = utxo[1]['amount'] vout = utxo[1]['vout'] transaction_package = [] tx_children = [] # First create one parent tx with 10 children (txid, sent_value) = self.chain_transaction(self.nodes[0], txid, vout, value, fee, 10) parent_transaction = txid for i in range(10): transaction_package.append({'txid': txid, 'vout': i, 'amount': sent_value}) # Sign and send up to MAX_DESCENDANT transactions chained off the parent tx chain = [] # save sent txs for the purpose of checking node1's mempool later (see below) for _ in range(MAX_DESCENDANTS - 1): utxo = transaction_package.pop(0) (txid, sent_value) = self.chain_transaction(self.nodes[0], utxo['txid'], utxo['vout'], utxo['amount'], fee, 10) chain.append(txid) if utxo['txid'] is parent_transaction: tx_children.append(txid) for j in range(10): transaction_package.append({'txid': txid, 'vout': j, 'amount': sent_value}) mempool = self.nodes[0].getrawmempool(True) assert_equal(mempool[parent_transaction]['descendantcount'], MAX_DESCENDANTS) assert_equal(sorted(mempool[parent_transaction]['spentby']), sorted(tx_children)) for child in tx_children: assert_equal(mempool[child]['depends'], [parent_transaction]) # Sending one more chained transaction will fail utxo = transaction_package.pop(0) assert_raises_rpc_error(-26, "too-long-mempool-chain", self.chain_transaction, self.nodes[0], utxo['txid'], utxo['vout'], utxo['amount'], fee, 10) # Check that node1's mempool is as expected, containing: # - txs from previous ancestor test (-> custom ancestor limit) # - parent tx for descendant test # - txs chained off parent tx (-> custom descendant limit) self.wait_until(lambda: len(self.nodes[1].getrawmempool(False)) == MAX_ANCESTORS_CUSTOM + 1 + MAX_DESCENDANTS_CUSTOM, timeout=10) mempool0 = self.nodes[0].getrawmempool(False) mempool1 = self.nodes[1].getrawmempool(False) assert set(mempool1).issubset(set(mempool0)) assert parent_transaction in mempool1 for tx in chain[:MAX_DESCENDANTS_CUSTOM]: assert tx in mempool1 for tx in chain[MAX_DESCENDANTS_CUSTOM:]: assert tx not in mempool1 # TODO: more detailed check of node1's mempool (fees etc.) # TODO: test descendant size limits # Test reorg handling # First, the basics: self.nodes[0].generate(1) self.sync_blocks() self.nodes[1].invalidateblock(self.nodes[0].getbestblockhash()) self.nodes[1].reconsiderblock(self.nodes[0].getbestblockhash()) # Now test the case where node1 has a transaction T in its mempool that # depends on transactions A and B which are in a mined block, and the # block containing A and B is disconnected, AND B is not accepted back # into node1's mempool because its ancestor count is too high. # Create 8 transactions, like so: # Tx0 -> Tx1 (vout0) # \--> Tx2 (vout1) -> Tx3 -> Tx4 -> Tx5 -> Tx6 -> Tx7 # # Mine them in the next block, then generate a new tx8 that spends # Tx1 and Tx7, and add to node1's mempool, then disconnect the # last block. # Create tx0 with 2 outputs utxo = self.nodes[0].listunspent() txid = utxo[0]['txid'] value = utxo[0]['amount'] vout = utxo[0]['vout'] send_value = satoshi_round((value - fee)/2) inputs = [ {'txid' : txid, 'vout' : vout} ] outputs = {} for _ in range(2): outputs[self.nodes[0].getnewaddress()] = send_value rawtx = self.nodes[0].createrawtransaction(inputs, outputs) signedtx = self.nodes[0].signrawtransactionwithwallet(rawtx) txid = self.nodes[0].sendrawtransaction(signedtx['hex']) tx0_id = txid value = send_value # Create tx1 tx1_id, _ = self.chain_transaction(self.nodes[0], tx0_id, 0, value, fee, 1) # Create tx2-7 vout = 1 txid = tx0_id for _ in range(6): (txid, sent_value) = self.chain_transaction(self.nodes[0], txid, vout, value, fee, 1) vout = 0 value = sent_value # Mine these in a block self.nodes[0].generate(1) self.sync_all() # Now generate tx8, with a big fee inputs = [ {'txid' : tx1_id, 'vout': 0}, {'txid' : txid, 'vout': 0} ] outputs = { self.nodes[0].getnewaddress() : send_value + value - 4*fee } rawtx = self.nodes[0].createrawtransaction(inputs, outputs) signedtx = self.nodes[0].signrawtransactionwithwallet(rawtx) txid = self.nodes[0].sendrawtransaction(signedtx['hex']) self.sync_mempools() # Now try to disconnect the tip on each node... self.nodes[1].invalidateblock(self.nodes[1].getbestblockhash()) self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash()) self.sync_blocks()if __name__ == '__main__': MempoolPackagesTest().main()