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#!/usr/bin/env python3
# Copyright (c) 2017 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
from test_framework.mininode import *
class BaseNode(P2PInterface):
nServices = 0
firstAddrnServices = 0
def on_version(self, message):
self.nServices = message.nServices
class NodeNetworkLimitedTest(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 1
self.extra_args = [['-prune=550']]
def getSignaledServiceFlags(self):
node = self.nodes[0].add_p2p_connection(BaseNode())
NetworkThread().start()
node.wait_for_verack()
services = node.nServices
self.nodes[0].disconnect_p2ps()
node.wait_for_disconnect()
return services
def tryGetBlockViaGetData(self, blockhash, must_disconnect):
node = self.nodes[0].add_p2p_connection(BaseNode())
NetworkThread().start()
node.wait_for_verack()
node.send_message(msg_verack())
getdata_request = msg_getdata()
getdata_request.inv.append(CInv(2, int(blockhash, 16)))
node.send_message(getdata_request)
if (must_disconnect):
#ensure we get disconnected
node.wait_for_disconnect(5)
else:
# check if the peer sends us the requested block
node.wait_for_block(int(blockhash, 16), 3)
self.nodes[0].disconnect_p2ps()
node.wait_for_disconnect()
def run_test(self):
#NODE_BLOOM & NODE_WITNESS & NODE_NETWORK_LIMITED must now be signaled
assert_equal(self.getSignaledServiceFlags(), 1036) #1036 == 0x40C == 0100 0000 1100
# | ||
# | |^--- NODE_BLOOM
# | ^---- NODE_WITNESS
# ^-- NODE_NETWORK_LIMITED
#now mine some blocks over the NODE_NETWORK_LIMITED + 2(racy buffer ext.) target
firstblock = self.nodes[0].generate(1)[0]
blocks = self.nodes[0].generate(292)
blockWithinLimitedRange = blocks[-1]
#make sure we can max retrive block at tip-288
#requesting block at height 2 (tip-289) must fail (ignored)
self.tryGetBlockViaGetData(firstblock, True) #first block must lead to disconnect
self.tryGetBlockViaGetData(blocks[1], False) #last block in valid range
self.tryGetBlockViaGetData(blocks[0], True) #first block outside of the 288+2 limit
#NODE_NETWORK_LIMITED must still be signaled after restart
self.restart_node(0)
assert_equal(self.getSignaledServiceFlags(), 1036)
#test the RPC service flags
assert_equal(self.nodes[0].getnetworkinfo()['localservices'], "000000000000040c")
# getdata a block above the NODE_NETWORK_LIMITED threshold must be possible
self.tryGetBlockViaGetData(blockWithinLimitedRange, False)
# getdata a block below the NODE_NETWORK_LIMITED threshold must be ignored
self.tryGetBlockViaGetData(firstblock, True)
if __name__ == '__main__':
NodeNetworkLimitedTest().main()
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