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118 lines
4.4 KiB
118 lines
4.4 KiB
3 years ago
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#!/usr/bin/env python3
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# Copyright (c) 2017-2020 The Bitcoin 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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"""Test that the mempool ensures transaction delivery by periodically sending
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to peers until a GETDATA is received."""
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import time
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from test_framework.p2p import P2PTxInvStore
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import (
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assert_equal,
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create_confirmed_utxos,
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)
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MAX_INITIAL_BROADCAST_DELAY = 15 * 60 # 15 minutes in seconds
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class MempoolUnbroadcastTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 2
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def skip_test_if_missing_module(self):
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self.skip_if_no_wallet()
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def run_test(self):
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self.test_broadcast()
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self.test_txn_removal()
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def test_broadcast(self):
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self.log.info("Test that mempool reattempts delivery of locally submitted transaction")
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node = self.nodes[0]
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min_relay_fee = node.getnetworkinfo()["relayfee"]
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utxos = create_confirmed_utxos(min_relay_fee, node, 10)
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self.disconnect_nodes(0, 1)
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self.log.info("Generate transactions that only node 0 knows about")
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# generate a wallet txn
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addr = node.getnewaddress()
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wallet_tx_hsh = node.sendtoaddress(addr, 0.0001)
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# generate a txn using sendrawtransaction
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us0 = utxos.pop()
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inputs = [{"txid": us0["txid"], "vout": us0["vout"]}]
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outputs = {addr: 0.0001}
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tx = node.createrawtransaction(inputs, outputs)
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node.settxfee(min_relay_fee)
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txF = node.fundrawtransaction(tx)
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txFS = node.signrawtransactionwithwallet(txF["hex"])
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rpc_tx_hsh = node.sendrawtransaction(txFS["hex"])
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# check transactions are in unbroadcast using rpc
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mempoolinfo = self.nodes[0].getmempoolinfo()
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assert_equal(mempoolinfo['unbroadcastcount'], 2)
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mempool = self.nodes[0].getrawmempool(True)
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for tx in mempool:
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assert_equal(mempool[tx]['unbroadcast'], True)
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# check that second node doesn't have these two txns
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mempool = self.nodes[1].getrawmempool()
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assert rpc_tx_hsh not in mempool
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assert wallet_tx_hsh not in mempool
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# ensure that unbroadcast txs are persisted to mempool.dat
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self.restart_node(0)
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self.log.info("Reconnect nodes & check if they are sent to node 1")
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self.connect_nodes(0, 1)
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# fast forward into the future & ensure that the second node has the txns
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node.mockscheduler(MAX_INITIAL_BROADCAST_DELAY)
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self.sync_mempools(timeout=30)
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mempool = self.nodes[1].getrawmempool()
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assert rpc_tx_hsh in mempool
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assert wallet_tx_hsh in mempool
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# check that transactions are no longer in first node's unbroadcast set
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mempool = self.nodes[0].getrawmempool(True)
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for tx in mempool:
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assert_equal(mempool[tx]['unbroadcast'], False)
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self.log.info("Add another connection & ensure transactions aren't broadcast again")
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conn = node.add_p2p_connection(P2PTxInvStore())
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node.mockscheduler(MAX_INITIAL_BROADCAST_DELAY)
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time.sleep(2) # allow sufficient time for possibility of broadcast
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assert_equal(len(conn.get_invs()), 0)
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self.disconnect_nodes(0, 1)
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node.disconnect_p2ps()
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self.log.info("Rebroadcast transaction and ensure it is not added to unbroadcast set when already in mempool")
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rpc_tx_hsh = node.sendrawtransaction(txFS["hex"])
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mempool = node.getrawmempool(True)
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assert rpc_tx_hsh in mempool
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assert not mempool[rpc_tx_hsh]['unbroadcast']
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def test_txn_removal(self):
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self.log.info("Test that transactions removed from mempool are removed from unbroadcast set")
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node = self.nodes[0]
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# since the node doesn't have any connections, it will not receive
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# any GETDATAs & thus the transaction will remain in the unbroadcast set.
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addr = node.getnewaddress()
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txhsh = node.sendtoaddress(addr, 0.0001)
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# check transaction was removed from unbroadcast set due to presence in
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# a block
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removal_reason = "Removed {} from set of unbroadcast txns before confirmation that txn was sent out".format(txhsh)
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with node.assert_debug_log([removal_reason]):
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node.generate(1)
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if __name__ == "__main__":
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MempoolUnbroadcastTest().main()
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