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test/functional/relay_zero_fee_transaction.py
- This file was added.
| Property | Old Value | New Value |
|---|---|---|
| File Mode | null | 100755 |
| #!/usr/bin/env python3 | |||||
| # Copyright (c) 2017 The Bitcoin developers | |||||
| # Distributed under the MIT software license, see the accompanying | |||||
| # file COPYING or http://www.opensource.org/licenses/mit-license.php. | |||||
| # | |||||
| # Test HighPriorityTransaction code | |||||
| # | |||||
| from test_framework.test_framework import BitcoinTestFramework | |||||
| from test_framework.util import * | |||||
| from datetime import datetime | |||||
| class RelayZeroFeeTransactionTest(BitcoinTestFramework): | |||||
| def __init__(self): | |||||
| super().__init__() | |||||
| self.setup_clean_chain = True | |||||
| self.is_network_split = False | |||||
| self.num_nodes = 2 | |||||
| # limitfreerelay = X means that we can't relay more than X * 1000 bytes of 0 fee txns per minute | |||||
| # but for some reasons involving a 10 minutes exponentially decay window the limit is X * 10 * 1000 | |||||
| # see validation.cpp#L917 | |||||
| self.extra_args = [ | |||||
| ["-limitfreerelay=1", "-minrelaytxfee=0.0001"], | |||||
| ["-limitfreerelay=1", "-minrelaytxfee=0.0001"] | |||||
| ] | |||||
| def setup_network(self): | |||||
| self.setup_nodes() | |||||
| connect_nodes(self.nodes[0], 1) | |||||
| self.sync_all() | |||||
| def create_transactions(self, node, utxos, num, fee): | |||||
| addr = node.getnewaddress() | |||||
| txids = [] | |||||
| for _ in range(num): | |||||
| t = utxos.pop() | |||||
| inputs = [{"txid": t["txid"], "vout": t["vout"]}] | |||||
| outputs = {} | |||||
| change = t['amount'] - fee | |||||
| outputs[addr] = satoshi_round(change) | |||||
| rawtx = node.createrawtransaction(inputs, outputs) | |||||
| signresult = node.signrawtransaction( | |||||
| rawtx, None, None, "NONE|FORKID") | |||||
| txid = node.sendrawtransaction(signresult["hex"], True) | |||||
| txids.append(txid) | |||||
| return txids | |||||
| def generate_zerofee_transactions(self, node, count, fee): | |||||
| # be sure to make this utxo aged enough | |||||
| # and with enough fees | |||||
| txns = create_confirmed_utxos( | |||||
| Decimal('0.00015'), node, count) | |||||
| txids = [] | |||||
| # Create txns_count number of txns with 0 fee | |||||
| range_size = [0, count] | |||||
| start_range = range_size[0] | |||||
| end_range = range_size[1] | |||||
| txids = self.create_transactions( | |||||
| node, txns[start_range:end_range], end_range - start_range, fee) | |||||
| return txids | |||||
| def run_test(self): | |||||
| # self.relayfee0 = self.nodes[0].getnetworkinfo()['relayfee'] | |||||
| # self.relayfee1 = self.nodes[1].getnetworkinfo()['relayfee'] | |||||
| # self.log.info("minRelayTxFee node0 set to: %s" % str(self.relayfee0)) | |||||
| # self.log.info("minRelayTxFee node1 set to: %s" % str(self.relayfee1)) | |||||
| # self.log.info("Fee set to: %d" % self.relayfee0) | |||||
| # first test: verify that 0 fee transactions generated locally are rate | |||||
| # rate limited. So we are going to generate 200 simple txns (~35K) in a very | |||||
| # short period. We should get rate limited at around 10K | |||||
| try: | |||||
| txids = self.generate_zerofee_transactions(self.nodes[0], 200, 0) | |||||
| except JSONRPCException as e: | |||||
| # mempool should be around 10K (using 2% tolerance) | |||||
| self.log.info("Error message is: %s" % e.error['message']) | |||||
| self.log.info("mem pool size is: %d" % | |||||
| self.nodes[0].getmempoolinfo()['bytes']) | |||||
| assert(self.nodes[0].getmempoolinfo()['bytes'] <= 10200) | |||||
| # 2nd test: verify that only 10K 0 fee txns are realyed from | |||||
| # node0 to node1 if minrelayfee is set to 0.0001 and limiterfreerelay is set to 1 | |||||
| # (the mempool size is about 35K) | |||||
| stop_nodes(self.nodes) | |||||
| os.remove(self.options.tmpdir + "/node0/regtest/mempool.dat") | |||||
| os.remove(self.options.tmpdir + "/node1/regtest/mempool.dat") | |||||
| self.extra_args = [ | |||||
| ["-limitfreerelay=10", "-minrelaytxfee=0.0001"], | |||||
| ["-limitfreerelay=1", "-minrelaytxfee=0.0001"] | |||||
| ] | |||||
| self.nodes = start_nodes( | |||||
| self.num_nodes, self.options.tmpdir, self.extra_args) | |||||
| connect_nodes_bi(self.nodes, 0, 1) | |||||
| txids = self.generate_zerofee_transactions(self.nodes[0], 200, 0) | |||||
| mempool_size_pre = self.nodes[0].getmempoolinfo()['bytes'] | |||||
| self.log.info("Current mempool size n bytes is: %d" % | |||||
| mempool_size_pre) | |||||
| try: | |||||
| # wait for 1 minute for the sync to happen | |||||
| # node1 mempool should be lower than 10K | |||||
| sync_mempools(self.nodes, wait=1, timeout=60) | |||||
| except AssertionError: | |||||
| self.log.debug("memp 0 %d, memp 1 %d" % | |||||
| (self.nodes[0].getmempoolinfo()['bytes'], self.nodes[1].getmempoolinfo()['bytes'])) | |||||
| self.log.info( | |||||
| "Assert that only 10K worth of zero fee transactions will be relayed") | |||||
| assert(self.nodes[1].getmempoolinfo()['bytes'] <= 10200) | |||||
| if __name__ == '__main__': | |||||
| RelayZeroFeeTransactionTest().main() | |||||