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#!/usr/bin/env python3
# Copyright (c) 2016 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 test_framework.mininode import *
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
import time
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
# TestNode: bare-bones "peer". Used to track which invs are received from a node
# and to send the node feefilter messages.
class TestNode(NodeConnCB):
def __init__(self):
super().__init__()
self.txinvs = []
def on_inv(self, conn, message):
for i in message.inv:
if (i.type == 1):
self.txinvs.append(hashToHex(i.hash))
def clear_invs(self):
with mininode_lock:
self.txinvs = []
def send_filter(self, feerate):
self.send_message(msg_feefilter(feerate))
self.sync_with_ping()
class FeeFilterTest(BitcoinTestFramework):
def __init__(self):
super().__init__()
self.num_nodes = 2
self.setup_clean_chain = False
def setup_network(self):
# Node1 will be used to generate txs which should be relayed from Node0
# to our test node
self.nodes = []
self.nodes.append(start_node(0, self.options.tmpdir))
self.nodes.append(start_node(1, self.options.tmpdir))
connect_nodes(self.nodes[0], 1)
def run_test(self):
node1 = self.nodes[1]
node0 = self.nodes[0]
# Get out of IBD
node1.generate(1)
sync_blocks(self.nodes)
# Setup the p2p connections and start up the network thread.
test_node = TestNode()
connection = NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], test_node)
test_node.add_connection(connection)
NetworkThread().start()
test_node.wait_for_verack()
# Test that invs are received for all txs at feerate of 20 sat/byte
node1.settxfee(Decimal("0.00020000"))
txids = [node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
assert(allInvsMatch(txids, test_node))
test_node.clear_invs()
# Set a filter of 15 sat/byte
test_node.send_filter(15000)
# Test that txs are still being received (paying 20 sat/byte)
txids = [node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
assert(allInvsMatch(txids, test_node))
test_node.clear_invs()
# Change tx fee rate to 10 sat/byte and test they are no longer received
node1.settxfee(Decimal("0.00010000"))
[node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
sync_mempools(self.nodes) # 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, test_node))
test_node.clear_invs()
# Remove fee filter and check that txs are received again
test_node.send_filter(0)
txids = [node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
assert(allInvsMatch(txids, test_node))
test_node.clear_invs()
if __name__ == '__main__':
FeeFilterTest().main()
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