@ -2,14 +2,26 @@
@@ -2,14 +2,26 @@
# 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.
""" Tests NODE_NETWORK_LIMITED.
Tests that a node configured with - prune = 550 signals NODE_NETWORK_LIMITED correctly
and that it responds to getdata requests for blocks correctly :
- send a block within 288 + 2 of the tip
- disconnect peers who request blocks older than that . """
from test_framework . messages import CInv , msg_getdata
from test_framework . mininode import NODE_BLOOM , NODE_NETWORK_LIMITED , NODE_WITNESS , NetworkThread , P2PInterface
from test_framework . test_framework import BitcoinTestFramework
from test_framework . util import *
from test_framework . mininode import *
from test_framework . util import assert_equal
class BaseNode ( P2PInterface ) :
nServices = 0
def on_version ( self , message ) :
self . nServices = message . nServices
class P2PIgnoreInv ( P2PInterface ) :
def on_inv ( self , message ) :
# The node will send us invs for other blocks. Ignore them.
pass
def send_getdata_for_block ( self , blockhash ) :
getdata_request = msg_getdata ( )
getdata_request . inv . append ( CInv ( 2 , int ( blockhash , 16 ) ) )
self . send_message ( getdata_request )
class NodeNetworkLimitedTest ( BitcoinTestFramework ) :
def set_test_params ( self ) :
@ -17,64 +29,29 @@ class NodeNetworkLimitedTest(BitcoinTestFramework):
@@ -17,64 +29,29 @@ class NodeNetworkLimitedTest(BitcoinTestFramework):
self . num_nodes = 1
self . extra_args = [ [ ' -prune=550 ' ] ]
def getSignaledServiceFlags ( self ) :
node = self . nodes [ 0 ] . add_p2p_connection ( BaseNode ( ) )
def run_test ( self ) :
node = self . nodes [ 0 ] . add_p2p_connection ( P2PIgnoreInv ( ) )
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 )
expected_services = NODE_BLOOM | NODE_WITNESS | NODE_NETWORK_LIMITED
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 ( )
self . log . info ( " Check that node has signalled expected services. " )
assert_equal ( node . nServices , expected_services )
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
self . log . info ( " Check that the localservices is as expected. " )
assert_equal ( int ( self . nodes [ 0 ] . getnetworkinfo ( ) [ ' localservices ' ] , 16 ) , expected_services )
#now mine some blocks over the NODE_NETWORK_LIMITED + 2(racy buffer ext.) target
firstblock = self . nodes [ 0 ] . generate ( 1 ) [ 0 ]
self . log . info ( " Mine enough blocks to reach the NODE_NETWORK_LIMITED range. " )
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 )
self . log . info ( " Make sure we can max retrive block at tip-288. " )
node . send_getdata_for_block ( blocks [ 1 ] ) # last block in valid range
node . wait_for_block ( int ( blocks [ 1 ] , 16 ) , timeout = 3 )
# getdata a block below the NODE_NETWORK_LIMITED threshold must be ignored
self . tryGetBlockViaGetData ( firstblock , True )
self . log . info ( " Requesting block at height 2 (tip-289) must fail (ignored). " )
node . send_getdata_for_block ( blocks [ 0 ] ) # first block outside of the 288+2 limit
node . wait_for_disconnect ( 5 )
if __name__ == ' __main__ ' :
NodeNetworkLimitedTest ( ) . main ( )