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net: Fix sent reject messages for blocks and transactions

Ever since we #5913 have been sending invalid reject messages
for transactions and blocks.

test: Add basic test for `reject` code

Extend P2P test framework to make it possible to expect reject
codes for transactions and blocks.

Github-Pull: #7179
Rebased-From: 9fc6ed6 2041190
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laanwj committed Dec 10, 2015
1 parent 96e8d12 commit 44fef99e666e85caa7616765412d7becf97ab673
@@ -100,6 +100,8 @@
'sendheaders.py',
'keypool.py',
'prioritise_transaction.py',
'invalidblockrequest.py',
'invalidtxrequest.py',
]
testScriptsExt = [
'bip65-cltv.py',
@@ -116,7 +118,6 @@
# 'rpcbind_test.py', #temporary, bug in libevent, see #6655
'smartfees.py',
'maxblocksinflight.py',
'invalidblockrequest.py',
'p2p-acceptblock.py',
'mempool_packages.py',
'maxuploadtarget.py',
@@ -6,7 +6,7 @@

from test_framework.test_framework import ComparisonTestFramework
from test_framework.util import *
from test_framework.comptool import TestManager, TestInstance
from test_framework.comptool import TestManager, TestInstance, RejectResult
from test_framework.mininode import *
from test_framework.blocktools import *
import logging
@@ -97,7 +97,7 @@ def get_tests(self):
assert(block2_orig.vtx != block2.vtx)

self.tip = block2.sha256
yield TestInstance([[block2, False], [block2_orig, True]])
yield TestInstance([[block2, RejectResult(16,'bad-txns-duplicate')], [block2_orig, True]])
height += 1

'''
@@ -112,7 +112,7 @@ def get_tests(self):
block3.rehash()
block3.solve()

yield TestInstance([[block3, False]])
yield TestInstance([[block3, RejectResult(16,'bad-cb-amount')]])


if __name__ == '__main__':
@@ -0,0 +1,76 @@
#!/usr/bin/env python2
#
# Distributed under the MIT/X11 software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
#

from test_framework.test_framework import ComparisonTestFramework
from test_framework.util import *
from test_framework.comptool import TestManager, TestInstance, RejectResult
from test_framework.mininode import *
from test_framework.blocktools import *
import logging
import copy
import time


'''
In this test we connect to one node over p2p, and test tx requests.
'''

# Use the ComparisonTestFramework with 1 node: only use --testbinary.
class InvalidTxRequestTest(ComparisonTestFramework):

''' Can either run this test as 1 node with expected answers, or two and compare them.
Change the "outcome" variable from each TestInstance object to only do the comparison. '''
def __init__(self):
self.num_nodes = 1

def run_test(self):
test = TestManager(self, self.options.tmpdir)
test.add_all_connections(self.nodes)
self.tip = None
self.block_time = None
NetworkThread().start() # Start up network handling in another thread
test.run()

def get_tests(self):
if self.tip is None:
self.tip = int ("0x" + self.nodes[0].getbestblockhash() + "L", 0)
self.block_time = int(time.time())+1

'''
Create a new block with an anyone-can-spend coinbase
'''
height = 1
block = create_block(self.tip, create_coinbase(height), self.block_time)
self.block_time += 1
block.solve()
# Save the coinbase for later
self.block1 = block
self.tip = block.sha256
height += 1
yield TestInstance([[block, True]])

'''
Now we need that block to mature so we can spend the coinbase.
'''
test = TestInstance(sync_every_block=False)
for i in xrange(100):
block = create_block(self.tip, create_coinbase(height), self.block_time)
block.solve()
self.tip = block.sha256
self.block_time += 1
test.blocks_and_transactions.append([block, True])
height += 1
yield test

# chr(100) is OP_NOTIF
# Transaction will be rejected with code 16 (REJECT_INVALID)
tx1 = create_transaction(self.block1.vtx[0], 0, chr(100), 50*100000000)
yield TestInstance([[tx1, RejectResult(16, 'mandatory-script-verify-flag-failed')]])

# TODO: test further transactions...

if __name__ == '__main__':
InvalidTxRequestTest().main()
@@ -41,6 +41,20 @@ def wait_until(predicate, attempts=float('inf'), timeout=float('inf')):

return False

class RejectResult(object):
'''
Outcome that expects rejection of a transaction or block.
'''
def __init__(self, code, reason=''):
self.code = code
self.reason = reason
def match(self, other):
if self.code != other.code:
return False
return other.reason.startswith(self.reason)
def __repr__(self):
return '%i:%s' % (self.code,self.reason or '*')

class TestNode(NodeConnCB):

def __init__(self, block_store, tx_store):
@@ -51,6 +65,8 @@ def __init__(self, block_store, tx_store):
self.block_request_map = {}
self.tx_store = tx_store
self.tx_request_map = {}
self.block_reject_map = {}
self.tx_reject_map = {}

# When the pingmap is non-empty we're waiting for
# a response
@@ -94,6 +110,12 @@ def on_pong(self, conn, message):
except KeyError:
raise AssertionError("Got pong for unknown ping [%s]" % repr(message))

def on_reject(self, conn, message):
if message.message == 'tx':
self.tx_reject_map[message.data] = RejectResult(message.code, message.reason)
if message.message == 'block':
self.block_reject_map[message.data] = RejectResult(message.code, message.reason)

def send_inv(self, obj):
mtype = 2 if isinstance(obj, CBlock) else 1
self.conn.send_message(msg_inv([CInv(mtype, obj.sha256)]))
@@ -243,6 +265,15 @@ def check_results(self, blockhash, outcome):
if outcome is None:
if c.cb.bestblockhash != self.connections[0].cb.bestblockhash:
return False
elif isinstance(outcome, RejectResult): # Check that block was rejected w/ code
if c.cb.bestblockhash == blockhash:
return False
if blockhash not in c.cb.block_reject_map:
print 'Block not in reject map: %064x' % (blockhash)
return False
if not outcome.match(c.cb.block_reject_map[blockhash]):
print 'Block rejected with %s instead of expected %s: %064x' % (c.cb.block_reject_map[blockhash], outcome, blockhash)
return False
elif ((c.cb.bestblockhash == blockhash) != outcome):
# print c.cb.bestblockhash, blockhash, outcome
return False
@@ -262,6 +293,15 @@ def check_mempool(self, txhash, outcome):
if c.cb.lastInv != self.connections[0].cb.lastInv:
# print c.rpc.getrawmempool()
return False
elif isinstance(outcome, RejectResult): # Check that tx was rejected w/ code
if txhash in c.cb.lastInv:
return False
if txhash not in c.cb.tx_reject_map:
print 'Tx not in reject map: %064x' % (txhash)
return False
if not outcome.match(c.cb.tx_reject_map[txhash]):
print 'Tx rejected with %s instead of expected %s: %064x' % (c.cb.tx_reject_map[txhash], outcome, txhash)
return False
elif ((txhash in c.cb.lastInv) != outcome):
# print c.rpc.getrawmempool(), c.cb.lastInv
return False
@@ -4824,7 +4824,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
pfrom->id,
FormatStateMessage(state));
if (state.GetRejectCode() < REJECT_INTERNAL) // Never send AcceptToMemoryPool's internal codes over P2P
pfrom->PushMessage("reject", strCommand, state.GetRejectCode(),
pfrom->PushMessage("reject", strCommand, (unsigned char)state.GetRejectCode(),
state.GetRejectReason().substr(0, MAX_REJECT_MESSAGE_LENGTH), inv.hash);
if (nDoS > 0)
Misbehaving(pfrom->GetId(), nDoS);
@@ -4954,7 +4954,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
int nDoS;
if (state.IsInvalid(nDoS)) {
assert (state.GetRejectCode() < REJECT_INTERNAL); // Blocks are never rejected with internal reject codes
pfrom->PushMessage("reject", strCommand, state.GetRejectCode(),
pfrom->PushMessage("reject", strCommand, (unsigned char)state.GetRejectCode(),
state.GetRejectReason().substr(0, MAX_REJECT_MESSAGE_LENGTH), inv.hash);
if (nDoS > 0) {
LOCK(cs_main);

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