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#!/usr/bin/env python3
# Copyright (c) 2016-2019 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 processing of feefilter messages."""
from decimal import Decimal
import time
from test_framework.messages import MSG_TX, msg_feefilter
from test_framework.mininode import mininode_lock, P2PInterface
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import assert_equal
def hashToHex(hash):
return format(hash, '064x')
# Wait up to 60 secs to see if the testnode has received all the expected invs
def allInvsMatch(invsExpected, testnode):
for x in range(60):
with mininode_lock:
if (sorted(invsExpected) == sorted(testnode.txinvs)):
return True
time.sleep(1)
return False
class FeefilterConn(P2PInterface):
feefilter_received = False
def on_feefilter(self, message):
self.feefilter_received = True
def assert_feefilter_received(self, recv: bool):
with mininode_lock:
assert_equal(self.feefilter_received, recv)
class TestP2PConn(P2PInterface):
def __init__(self):
super().__init__()
self.txinvs = []
def on_inv(self, message):
for i in message.inv:
if (i.type == MSG_TX):
self.txinvs.append(hashToHex(i.hash))
def clear_invs(self):
with mininode_lock:
self.txinvs = []
class FeeFilterTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 2
# We lower the various required feerates for this test
# to catch a corner-case where feefilter used to slightly undercut
# mempool and wallet feerate calculation based on GetFee
# rounding down 3 places, leading to stranded transactions.
# See issue #16499
self.extra_args = [["-minrelaytxfee=0.00000100", "-mintxfee=0.00000100"]] * self.num_nodes
def skip_test_if_missing_module(self):
self.skip_if_no_wallet()
def run_test(self):
self.test_feefilter_forcerelay()
self.test_feefilter()
def test_feefilter_forcerelay(self):
self.log.info('Check that peers without forcerelay permission (default) get a feefilter message')
self.nodes[0].add_p2p_connection(FeefilterConn()).assert_feefilter_received(True)
self.log.info('Check that peers with forcerelay permission do not get a feefilter message')
self.restart_node(0, extra_args=['-whitelist=forcerelay@127.0.0.1'])
self.nodes[0].add_p2p_connection(FeefilterConn()).assert_feefilter_received(False)
# Restart to disconnect peers and load default extra_args
self.restart_node(0)
self.connect_nodes(1, 0)
def test_feefilter(self):
node1 = self.nodes[1]
node0 = self.nodes[0]
conn = self.nodes[0].add_p2p_connection(TestP2PConn())
# Test that invs are received by test connection for all txs at
# feerate of .2 sat/byte
node1.settxfee(Decimal("0.00000200"))
txids = [node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
assert allInvsMatch(txids, conn)
conn.clear_invs()
# Set a filter of .15 sat/byte on test connection
conn.send_and_ping(msg_feefilter(150))
# Test that txs are still being received by test connection (paying .15 sat/byte)
node1.settxfee(Decimal("0.00000150"))
txids = [node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
assert allInvsMatch(txids, conn)
conn.clear_invs()
# Change tx fee rate to .1 sat/byte and test they are no longer received
# by the test connection
node1.settxfee(Decimal("0.00000100"))
[node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
self.sync_mempools() # must be sure node 0 has received all txs
# Send one transaction from node0 that should be received, so that we
# we can sync the test on receipt (if node1's txs were relayed, they'd
# be received by the time this node0 tx is received). This is
# unfortunately reliant on the current relay behavior where we batch up
# to 35 entries in an inv, which means that when this next transaction
# is eligible for relay, the prior transactions from node1 are eligible
# as well.
node0.settxfee(Decimal("0.00020000"))
txids = [node0.sendtoaddress(node0.getnewaddress(), 1)]
assert allInvsMatch(txids, conn)
conn.clear_invs()
# Remove fee filter and check that txs are received again
conn.send_and_ping(msg_feefilter(0))
txids = [node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
assert allInvsMatch(txids, conn)
conn.clear_invs()
if __name__ == '__main__':
FeeFilterTest().main()
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