git / moonbite-core / test/functional/feature_maxuploadtarget.py · raw
#!/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 droppedif uploadtarget has been reached.* Verify that getdata requests for recent blocks are respected evenif uploadtarget has been reached.* Verify that the upload counters are reset after 24 hours."""from collections import defaultdictimport timefrom test_framework.messages import CInv, MSG_BLOCK, msg_getdatafrom test_framework.p2p import P2PInterfacefrom test_framework.test_framework import BitcoinTestFrameworkfrom test_framework.util import assert_equal, mine_large_blockclass 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] += 1class MaxUploadTest(BitcoinTestFramework): def set_test_params(self): self.setup_clean_chain = True self.num_nodes = 1 self.extra_args = [[ "-maxuploadtarget=6400", "-acceptnonstdtxn=1", "-peertimeout=9999", # bump because mocktime might cause a disconnect otherwise ]] 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): # 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) # 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(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) # 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 = 6400*1024*1024 daily_buffer = 144 * 25800195 # MWEB uses a buffer 4x the max serialized segwit block 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): 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 800 times getdata_request.inv = [CInv(MSG_BLOCK, big_new_block)] for i in range(800): p2p_conns[1].send_and_ping(getdata_request) 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(int(time.time())) 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"]) # 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()