forked from dashpay/dash
-
Notifications
You must be signed in to change notification settings - Fork 0
/
feature_maxuploadtarget.py
executable file
·171 lines (131 loc) · 6.72 KB
/
feature_maxuploadtarget.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
#!/usr/bin/env python3
# Copyright (c) 2015-2020 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 respected even
if uploadtarget has been reached.
* Verify that the upload counters are reset after 24 hours.
"""
from collections import defaultdict
from test_framework.messages import CInv, MAX_BLOCK_SIZE, MSG_BLOCK, msg_getdata
from test_framework.p2p import P2PInterface
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import assert_equal, mine_large_block, set_node_times
class TestP2PConn(P2PInterface):
def __init__(self):
super().__init__()
self.block_receive_map = defaultdict(int)
def on_inv(self, message):
pass
def on_block(self, message):
message.block.calc_sha256()
self.block_receive_map[message.block.sha256] += 1
class MaxUploadTest(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 1
self.extra_args = [[
"-maxuploadtarget=400",
"-acceptnonstdtxn=1",
]]
self.supports_cli = False
# Cache for utxos, as the listunspent may take a long time later in the test
self.utxo_cache = []
def skip_test_if_missing_module(self):
self.skip_if_no_wallet()
def run_test(self):
# Advance all nodes 2 weeks in the future
old_mocktime = self.mocktime
current_mocktime = old_mocktime + 2*60*60*24*7
self.mocktime = current_mocktime
set_node_times(self.nodes, current_mocktime)
# 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
self.nodes[0].setmocktime(old_mocktime)
# Generate some old blocks
self.nodes[0].generate(130)
# p2p_conns[0] will only request old blocks
# p2p_conns[1] will only request new blocks
# p2p_conns[2] will test resetting the counters
p2p_conns = []
for _ in range(3):
p2p_conns.append(self.nodes[0].add_p2p_connection(TestP2PConn()))
# 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(current_mocktime - 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)
# p2p_conns[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(MSG_BLOCK, big_old_block))
max_bytes_per_day = 400*1024*1024
daily_buffer = 144 * MAX_BLOCK_SIZE
max_bytes_available = max_bytes_per_day - daily_buffer
success_count = max_bytes_available // old_block_size
# 144MB will be reserved for relaying new blocks, so expect this to
# succeed for ~70 tries.
for i in range(success_count):
p2p_conns[0].send_and_ping(getdata_request)
assert_equal(p2p_conns[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 _ in range(3):
p2p_conns[0].send_message(getdata_request)
p2p_conns[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 p2p_conns[1] should succeed indefinitely,
# even when over the max upload target.
# We'll try 200 times
getdata_request.inv = [CInv(MSG_BLOCK, big_new_block)]
for i in range(200):
p2p_conns[1].send_and_ping(getdata_request)
p2p_conns[1].sync_with_ping()
assert_equal(p2p_conns[1].block_receive_map[big_new_block], i+1)
self.log.info("Peer 1 able to repeatedly download new block")
# But if p2p_conns[1] tries for an old block, it gets disconnected too.
getdata_request.inv = [CInv(MSG_BLOCK, big_old_block)]
p2p_conns[1].send_message(getdata_request)
p2p_conns[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 p2p_conns[2] should be able to retrieve the old block.
self.nodes[0].setmocktime(current_mocktime)
p2p_conns[2].sync_with_ping()
p2p_conns[2].send_and_ping(getdata_request)
assert_equal(p2p_conns[2].block_receive_map[big_old_block], 1)
self.log.info("Peer 2 able to download old block")
self.nodes[0].disconnect_p2ps()
self.log.info("Restarting node 0 with download permission and 1MB maxuploadtarget")
self.restart_node(0, ["-whitelist=download@127.0.0.1", "-maxuploadtarget=1", "-blockmaxsize=999000", "-mocktime="+str(current_mocktime)])
# Reconnect to self.nodes[0]
peer = self.nodes[0].add_p2p_connection(TestP2PConn())
#retrieve 20 blocks which should be enough to break the 1MB limit
getdata_request.inv = [CInv(MSG_BLOCK, big_new_block)]
for i in range(20):
peer.send_and_ping(getdata_request)
assert_equal(peer.block_receive_map[big_new_block], i+1)
getdata_request.inv = [CInv(MSG_BLOCK, big_old_block)]
peer.send_and_ping(getdata_request)
self.log.info("Peer still connected after trying to download old block (download permission)")
peer_info = self.nodes[0].getpeerinfo()
assert_equal(len(peer_info), 1) # node is still connected
assert_equal(peer_info[0]['permissions'], ['download'])
if __name__ == '__main__':
MaxUploadTest().main()