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5c8ff26[tests] Add NetworkThread assertions (John Newbery)34e08b3[tests] Fix network threading in functional tests (John Newbery)74e64f2[tests] Use network_thread_start() in tests. (John Newbery)5fc6e71[tests] Add network_thread_ utility functions. (John Newbery) Pull request description: Add assert that only one NetworkThread exists at any time in functional tests, and fix cases where that wasn't true. fixes #11776 Tree-SHA512: fe5d1c59005f94bf66e11bb23ccf274b1cd9913741b56ea11dbcd21db4cc0b53b4413c0c4c16dbcd6ac611adad5e5cc2baaa39720598ce7b6393889945d06298
175 lines
6.8 KiB
Python
Executable File
175 lines
6.8 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2015-2016 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 behavior of -maxuploadtarget.
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* Verify that getdata requests for old blocks (>1week) are dropped
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if uploadtarget has been reached.
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* Verify that getdata requests for recent blocks are respecteved even
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if uploadtarget has been reached.
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* Verify that the upload counters are reset after 24 hours.
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"""
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from collections import defaultdict
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import time
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from test_framework.mininode import *
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import *
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class TestNode(NodeConnCB):
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def __init__(self):
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super().__init__()
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self.block_receive_map = defaultdict(int)
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def on_inv(self, conn, message):
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pass
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def on_block(self, conn, message):
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message.block.calc_sha256()
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self.block_receive_map[message.block.sha256] += 1
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class MaxUploadTest(BitcoinTestFramework):
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def set_test_params(self):
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self.setup_clean_chain = True
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self.num_nodes = 1
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self.extra_args = [["-maxuploadtarget=200", "-blockmaxsize=999000", "-maxtipage="+str(2*60*60*24*7)]]
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# Cache for utxos, as the listunspent may take a long time later in the test
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self.utxo_cache = []
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def run_test(self):
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# Advance all nodes 2 weeks in the future
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old_mocktime = self.mocktime
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current_mocktime = old_mocktime + 2*60*60*24*7
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self.mocktime = current_mocktime
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set_node_times(self.nodes, current_mocktime)
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# Before we connect anything, we first set the time on the node
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# to be in the past, otherwise things break because the CNode
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# time counters can't be reset backward after initialization
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self.nodes[0].setmocktime(old_mocktime)
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# Generate some old blocks
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self.nodes[0].generate(130)
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# p2p_conns[0] will only request old blocks
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# p2p_conns[1] will only request new blocks
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# p2p_conns[2] will test resetting the counters
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p2p_conns = []
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for _ in range(3):
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p2p_conns.append(self.nodes[0].add_p2p_connection(TestNode()))
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network_thread_start()
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for p2pc in p2p_conns:
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p2pc.wait_for_verack()
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# Test logic begins here
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# Now mine a big block
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mine_large_block(self.nodes[0], self.utxo_cache)
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# Store the hash; we'll request this later
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big_old_block = self.nodes[0].getbestblockhash()
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old_block_size = self.nodes[0].getblock(big_old_block, True)['size']
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big_old_block = int(big_old_block, 16)
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# Advance to two days ago
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self.nodes[0].setmocktime(current_mocktime - 2*60*60*24)
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# Mine one more block, so that the prior block looks old
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mine_large_block(self.nodes[0], self.utxo_cache)
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# We'll be requesting this new block too
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big_new_block = self.nodes[0].getbestblockhash()
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big_new_block = int(big_new_block, 16)
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# p2p_conns[0] will test what happens if we just keep requesting the
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# the same big old block too many times (expect: disconnect)
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getdata_request = msg_getdata()
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getdata_request.inv.append(CInv(2, big_old_block))
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max_bytes_per_day = 200*1024*1024
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daily_buffer = 144 * MAX_BLOCK_SIZE
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max_bytes_available = max_bytes_per_day - daily_buffer
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success_count = max_bytes_available // old_block_size
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# 144MB will be reserved for relaying new blocks, so expect this to
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# succeed for ~70 tries.
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for i in range(success_count):
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p2p_conns[0].send_message(getdata_request)
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p2p_conns[0].sync_with_ping()
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assert_equal(p2p_conns[0].block_receive_map[big_old_block], i+1)
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assert_equal(len(self.nodes[0].getpeerinfo()), 3)
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# At most a couple more tries should succeed (depending on how long
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# the test has been running so far).
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for i in range(3):
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p2p_conns[0].send_message(getdata_request)
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p2p_conns[0].wait_for_disconnect()
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assert_equal(len(self.nodes[0].getpeerinfo()), 2)
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self.log.info("Peer 0 disconnected after downloading old block too many times")
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# Requesting the current block on p2p_conns[1] should succeed indefinitely,
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# even when over the max upload target.
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# We'll try 200 times
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getdata_request.inv = [CInv(2, big_new_block)]
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for i in range(200):
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p2p_conns[1].send_message(getdata_request)
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p2p_conns[1].sync_with_ping()
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assert_equal(p2p_conns[1].block_receive_map[big_new_block], i+1)
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self.log.info("Peer 1 able to repeatedly download new block")
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# But if p2p_conns[1] tries for an old block, it gets disconnected too.
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getdata_request.inv = [CInv(2, big_old_block)]
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p2p_conns[1].send_message(getdata_request)
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p2p_conns[1].wait_for_disconnect()
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assert_equal(len(self.nodes[0].getpeerinfo()), 1)
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self.log.info("Peer 1 disconnected after trying to download old block")
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self.log.info("Advancing system time on node to clear counters...")
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# If we advance the time by 24 hours, then the counters should reset,
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# and p2p_conns[2] should be able to retrieve the old block.
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self.nodes[0].setmocktime(current_mocktime)
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p2p_conns[2].sync_with_ping()
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p2p_conns[2].send_message(getdata_request)
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p2p_conns[2].sync_with_ping()
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assert_equal(p2p_conns[2].block_receive_map[big_old_block], 1)
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self.log.info("Peer 2 able to download old block")
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self.nodes[0].disconnect_p2ps()
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#stop and start node 0 with 1MB maxuploadtarget, whitelist 127.0.0.1
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self.log.info("Restarting nodes with -whitelist=127.0.0.1")
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self.stop_node(0)
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self.start_node(0, ["-whitelist=127.0.0.1", "-maxuploadtarget=1", "-blockmaxsize=999000", "-maxtipage="+str(2*60*60*24*7), "-mocktime="+str(current_mocktime)])
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# Reconnect to self.nodes[0]
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self.nodes[0].add_p2p_connection(TestNode())
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network_thread_start()
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self.nodes[0].p2p.wait_for_verack()
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#retrieve 20 blocks which should be enough to break the 1MB limit
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getdata_request.inv = [CInv(2, big_new_block)]
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for i in range(20):
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self.nodes[0].p2p.send_message(getdata_request)
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self.nodes[0].p2p.sync_with_ping()
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assert_equal(self.nodes[0].p2p.block_receive_map[big_new_block], i+1)
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getdata_request.inv = [CInv(2, big_old_block)]
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self.nodes[0].p2p.send_and_ping(getdata_request)
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assert_equal(len(self.nodes[0].getpeerinfo()), 1) #node is still connected because of the whitelist
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self.log.info("Peer still connected after trying to download old block (whitelisted)")
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if __name__ == '__main__':
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MaxUploadTest().main()
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