115 lines
4.6 KiB
Python
Executable File
115 lines
4.6 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2018 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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from test_framework.mininode import *
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from test_framework.test_framework import DashTestFramework
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from test_framework.util import *
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from time import *
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'''
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InstantSendTest -- test InstantSend functionality (prevent doublespend for unconfirmed transactions)
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'''
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class InstantSendTest(DashTestFramework):
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def __init__(self):
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super().__init__(9, 5, [], fast_dip3_enforcement=True)
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# set sender, receiver, isolated nodes
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self.isolated_idx = 1
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self.receiver_idx = 2
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self.sender_idx = 3
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def run_test(self):
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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.mine_quorum()
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self.nodes[0].spork("SPORK_2_INSTANTSEND_ENABLED", 0)
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self.nodes[0].spork("SPORK_3_INSTANTSEND_BLOCK_FILTERING", 0)
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self.wait_for_sporks_same()
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self.test_mempool_doublespend()
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self.test_block_doublespend()
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def test_block_doublespend(self):
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sender = self.nodes[self.sender_idx]
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receiver = self.nodes[self.receiver_idx]
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isolated = self.nodes[self.isolated_idx]
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# feed the sender with some balance
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sender_addr = sender.getnewaddress()
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self.nodes[0].sendtoaddress(sender_addr, 1)
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self.nodes[0].generate(2)
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self.sync_all()
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# create doublespending transaction, but don't relay it
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dblspnd_tx = self.create_raw_tx(sender, isolated, 0.5, 1, 100)
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# isolate one node from network
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isolate_node(isolated)
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# instantsend to receiver
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receiver_addr = receiver.getnewaddress()
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is_id = sender.sendtoaddress(receiver_addr, 0.9)
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for node in self.nodes:
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if node is not isolated:
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self.wait_for_instantlock(is_id, node)
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# send doublespend transaction to isolated node
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isolated.sendrawtransaction(dblspnd_tx['hex'])
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# generate block on isolated node with doublespend transaction
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self.bump_mocktime(1)
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set_node_times(self.nodes, self.mocktime)
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isolated.generate(1)
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wrong_block = isolated.getbestblockhash()
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# connect isolated block to network
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reconnect_isolated_node(isolated, 0)
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# check doublespend block is rejected by other nodes
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timeout = 10
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for i in range(0, self.num_nodes):
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if i == self.isolated_idx:
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continue
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res = self.nodes[i].waitforblock(wrong_block, timeout)
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assert (res['hash'] != wrong_block)
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# wait for long time only for first node
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timeout = 1
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# mine more blocks
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# TODO: mine these blocks on an isolated node
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self.bump_mocktime(1)
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set_node_times(self.nodes, self.mocktime)
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self.nodes[0].generate(2)
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self.sync_all()
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def test_mempool_doublespend(self):
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sender = self.nodes[self.sender_idx]
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receiver = self.nodes[self.receiver_idx]
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isolated = self.nodes[self.isolated_idx]
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# feed the sender with some balance
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sender_addr = sender.getnewaddress()
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self.nodes[0].sendtoaddress(sender_addr, 1)
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self.nodes[0].generate(2)
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self.sync_all()
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# create doublespending transaction, but don't relay it
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dblspnd_tx = self.create_raw_tx(sender, isolated, 0.5, 1, 100)
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dblspnd_txid = bytes_to_hex_str(hash256(hex_str_to_bytes(dblspnd_tx['hex']))[::-1])
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# isolate one node from network
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isolate_node(isolated)
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# send doublespend transaction to isolated node
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isolated.sendrawtransaction(dblspnd_tx['hex'])
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# let isolated node rejoin the network
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# The previously isolated node should NOT relay the doublespending TX
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reconnect_isolated_node(isolated, 0)
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for node in self.nodes:
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if node is not isolated:
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assert_raises_jsonrpc(-5, "No such mempool or blockchain transaction", node.getrawtransaction, dblspnd_txid)
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# instantsend to receiver. The previously isolated node should prune the doublespend TX and request the correct
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# TX from other nodes.
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receiver_addr = receiver.getnewaddress()
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is_id = sender.sendtoaddress(receiver_addr, 0.9)
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for node in self.nodes:
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self.wait_for_instantlock(is_id, node)
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assert_raises_jsonrpc(-5, "No such mempool or blockchain transaction", isolated.getrawtransaction, dblspnd_txid)
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if __name__ == '__main__':
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InstantSendTest().main()
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