You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
178 lines
7.1 KiB
178 lines
7.1 KiB
#!/usr/bin/env python3 |
|
# Copyright (c) 2015-2016 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 behavior of -maxuploadtarget. |
|
|
|
* Verify that getdata requests for old blocks (>1week) are dropped |
|
if uploadtarget has been reached. |
|
* Verify that getdata requests for recent blocks are respecteved even |
|
if uploadtarget has been reached. |
|
* Verify that the upload counters are reset after 24 hours. |
|
""" |
|
from collections import defaultdict |
|
import time |
|
|
|
from test_framework.mininode import * |
|
from test_framework.test_framework import BitcoinTestFramework |
|
from test_framework.util import * |
|
|
|
class TestNode(NodeConnCB): |
|
def __init__(self): |
|
super().__init__() |
|
self.block_receive_map = defaultdict(int) |
|
|
|
def on_inv(self, conn, message): |
|
pass |
|
|
|
def on_block(self, conn, message): |
|
message.block.calc_sha256() |
|
self.block_receive_map[message.block.sha256] += 1 |
|
|
|
class MaxUploadTest(BitcoinTestFramework): |
|
|
|
def __init__(self): |
|
super().__init__() |
|
self.setup_clean_chain = True |
|
self.num_nodes = 1 |
|
|
|
# Cache for utxos, as the listunspent may take a long time later in the test |
|
self.utxo_cache = [] |
|
|
|
def setup_network(self): |
|
# Start a node with maxuploadtarget of 200 MB (/24h) |
|
self.nodes = [] |
|
self.nodes.append(start_node(0, self.options.tmpdir, ["-maxuploadtarget=800", "-blockmaxsize=999000"])) |
|
|
|
def run_test(self): |
|
# Before we connect anything, we first set the time on the node |
|
# to be in the past, otherwise things break because the CNode |
|
# time counters can't be reset backward after initialization |
|
old_time = int(time.time() - 2*60*60*24*7) |
|
self.nodes[0].setmocktime(old_time) |
|
|
|
# Generate some old blocks |
|
self.nodes[0].generate(130) |
|
|
|
# test_nodes[0] will only request old blocks |
|
# test_nodes[1] will only request new blocks |
|
# test_nodes[2] will test resetting the counters |
|
test_nodes = [] |
|
connections = [] |
|
|
|
for i in range(3): |
|
test_nodes.append(TestNode()) |
|
connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], test_nodes[i])) |
|
test_nodes[i].add_connection(connections[i]) |
|
|
|
NetworkThread().start() # Start up network handling in another thread |
|
[x.wait_for_verack() for x in test_nodes] |
|
|
|
# Test logic begins here |
|
|
|
# Now mine a big block |
|
mine_large_block(self.nodes[0], self.utxo_cache) |
|
|
|
# Store the hash; we'll request this later |
|
big_old_block = self.nodes[0].getbestblockhash() |
|
old_block_size = self.nodes[0].getblock(big_old_block, True)['size'] |
|
big_old_block = int(big_old_block, 16) |
|
|
|
# Advance to two days ago |
|
self.nodes[0].setmocktime(int(time.time()) - 2*60*60*24) |
|
|
|
# Mine one more block, so that the prior block looks old |
|
mine_large_block(self.nodes[0], self.utxo_cache) |
|
|
|
# We'll be requesting this new block too |
|
big_new_block = self.nodes[0].getbestblockhash() |
|
big_new_block = int(big_new_block, 16) |
|
|
|
# test_nodes[0] will test what happens if we just keep requesting the |
|
# the same big old block too many times (expect: disconnect) |
|
|
|
getdata_request = msg_getdata() |
|
getdata_request.inv.append(CInv(2, big_old_block)) |
|
|
|
max_bytes_per_day = 800*1024*1024 |
|
daily_buffer = 144 * 4000000 |
|
max_bytes_available = max_bytes_per_day - daily_buffer |
|
success_count = max_bytes_available // old_block_size |
|
|
|
# 576MB will be reserved for relaying new blocks, so expect this to |
|
# succeed for ~235 tries. |
|
for i in range(success_count): |
|
test_nodes[0].send_message(getdata_request) |
|
test_nodes[0].sync_with_ping() |
|
assert_equal(test_nodes[0].block_receive_map[big_old_block], i+1) |
|
|
|
assert_equal(len(self.nodes[0].getpeerinfo()), 3) |
|
# At most a couple more tries should succeed (depending on how long |
|
# the test has been running so far). |
|
for i in range(3): |
|
test_nodes[0].send_message(getdata_request) |
|
test_nodes[0].wait_for_disconnect() |
|
assert_equal(len(self.nodes[0].getpeerinfo()), 2) |
|
self.log.info("Peer 0 disconnected after downloading old block too many times") |
|
|
|
# Requesting the current block on test_nodes[1] should succeed indefinitely, |
|
# even when over the max upload target. |
|
# We'll try 800 times |
|
getdata_request.inv = [CInv(2, big_new_block)] |
|
for i in range(800): |
|
test_nodes[1].send_message(getdata_request) |
|
test_nodes[1].sync_with_ping() |
|
assert_equal(test_nodes[1].block_receive_map[big_new_block], i+1) |
|
|
|
self.log.info("Peer 1 able to repeatedly download new block") |
|
|
|
# But if test_nodes[1] tries for an old block, it gets disconnected too. |
|
getdata_request.inv = [CInv(2, big_old_block)] |
|
test_nodes[1].send_message(getdata_request) |
|
test_nodes[1].wait_for_disconnect() |
|
assert_equal(len(self.nodes[0].getpeerinfo()), 1) |
|
|
|
self.log.info("Peer 1 disconnected after trying to download old block") |
|
|
|
self.log.info("Advancing system time on node to clear counters...") |
|
|
|
# If we advance the time by 24 hours, then the counters should reset, |
|
# and test_nodes[2] should be able to retrieve the old block. |
|
self.nodes[0].setmocktime(int(time.time())) |
|
test_nodes[2].sync_with_ping() |
|
test_nodes[2].send_message(getdata_request) |
|
test_nodes[2].sync_with_ping() |
|
assert_equal(test_nodes[2].block_receive_map[big_old_block], 1) |
|
|
|
self.log.info("Peer 2 able to download old block") |
|
|
|
[c.disconnect_node() for c in connections] |
|
|
|
#stop and start node 0 with 1MB maxuploadtarget, whitelist 127.0.0.1 |
|
self.log.info("Restarting nodes with -whitelist=127.0.0.1") |
|
stop_node(self.nodes[0], 0) |
|
self.nodes[0] = start_node(0, self.options.tmpdir, ["-whitelist=127.0.0.1", "-maxuploadtarget=1", "-blockmaxsize=999000"]) |
|
|
|
#recreate/reconnect a test node |
|
test_nodes = [TestNode()] |
|
connections = [NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], test_nodes[0])] |
|
test_nodes[0].add_connection(connections[0]) |
|
|
|
NetworkThread().start() # Start up network handling in another thread |
|
test_nodes[0].wait_for_verack() |
|
|
|
#retrieve 20 blocks which should be enough to break the 1MB limit |
|
getdata_request.inv = [CInv(2, big_new_block)] |
|
for i in range(20): |
|
test_nodes[0].send_message(getdata_request) |
|
test_nodes[0].sync_with_ping() |
|
assert_equal(test_nodes[0].block_receive_map[big_new_block], i+1) |
|
|
|
getdata_request.inv = [CInv(2, big_old_block)] |
|
test_nodes[0].send_and_ping(getdata_request) |
|
assert_equal(len(self.nodes[0].getpeerinfo()), 1) #node is still connected because of the whitelist |
|
|
|
self.log.info("Peer still connected after trying to download old block (whitelisted)") |
|
|
|
if __name__ == '__main__': |
|
MaxUploadTest().main()
|
|
|