def make_utxos(self):
block = self.build_block_on_tip(self.nodes[0])
self.segwit_node.send_and_ping(msg_no_witness_block(block))
assert int(self.nodes[0].getbestblockhash(), 16) == block.sha256
self.nodes[0].generatetoaddress(100, self.nodes[0].getnewaddress(address_type="bech32"))
total_value = block.vtx[0].vout[0].nValue
out_value = total_value // 10
tx = CTransaction()
tx.vin.append(CTxIn(COutPoint(block.vtx[0].sha256, 0), b''))
for _ in range(10):
tx.vout.append(CTxOut(out_value, CScript([OP_TRUE])))
tx.rehash()
block2 = self.build_block_on_tip(self.nodes[0])
block2.vtx.append(tx)
block2.hashMerkleRoot = block2.calc_merkle_root()
block2.solve()
self.segwit_node.send_and_ping(msg_no_witness_block(block2))
assert_equal(int(self.nodes[0].getbestblockhash(), 16), block2.sha256)
self.utxos.extend([[tx.sha256, i, out_value] for i in range(10)])
def test_incorrect_blocktxn_response(self, test_node):
version = test_node.cmpct_version
node = self.nodes[0]
utxo = self.utxos.pop(0)
block = self.build_block_with_transactions(node, utxo, 10)
self.utxos.append([block.vtx[-1].sha256, 0, block.vtx[-1].vout[0].nValue])
# Relay the first 5 transactions from the block in advance
for tx in block.vtx[1:6]:
test_node.send_message(msg_tx(tx))
test_node.sync_with_ping()
# Make sure all transactions were accepted.
mempool = node.getrawmempool()
for tx in block.vtx[1:6]:
assert tx.hash in mempool
# Send compact block
comp_block = HeaderAndShortIDs()
comp_block.initialize_from_block(block, prefill_list=[0], use_witness=(version == 2))
test_node.send_and_ping(msg_cmpctblock(comp_block.to_p2p()))
absolute_indexes = []
with mininode_lock:
assert "getblocktxn" in test_node.last_message
absolute_indexes = test_node.last_message["getblocktxn"].block_txn_request.to_absolute()
assert_equal(absolute_indexes, [6, 7, 8, 9, 10])
# Now give an incorrect response.
# Note that it's possible for bitcoind to be smart enough to know we're
# lying, since it could check to see if the shortid matches what we're
# sending, and eg disconnect us for misbehavior. If that behavior
# change was made, we could just modify this test by having a
# different peer provide the block further down, so that we're still
# verifying that the block isn't marked bad permanently. This is good
# enough for now.
msg = msg_no_witness_blocktxn()
if version == 2:
msg = msg_blocktxn()
msg.block_transactions = BlockTransactions(block.sha256, [block.vtx[5]] + block.vtx[7:])
test_node.send_and_ping(msg)
# Tip should not have updated
assert_equal(int(node.getbestblockhash(), 16), block.hashPrevBlock)
# We should receive a getdata request
test_node.wait_for_getdata([block.sha256], timeout=10)
assert test_node.last_message["getdata"].inv[0].type == 2 or test_node.last_message["getdata"].inv[0].type == 2 | MSG_WITNESS_FLAG
# Deliver the block
if version == 2:
test_node.send_and_ping(msg_block(block))
else:
test_node.send_and_ping(msg_no_witness_block(block))
assert_equal(int(node.getbestblockhash(), 16), block.sha256)
def test_witness_block(node,
p2p,
block,
accepted,
with_witness=True,
reason=None):
"""Send a block to the node and check that it's accepted
- Submit the block over the p2p interface
- use the getbestblockhash rpc to check for acceptance."""
reason = [reason] if reason else []
with node.assert_debug_log(expected_msgs=reason):
p2p.send_message(
msg_block(block) if with_witness else msg_no_witness_block(block))
p2p.sync_with_ping()
assert_equal(node.getbestblockhash() == block.hash, accepted)
