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#!/usr/bin/env python3
# Copyright (c) 2019-2020 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 p2p blocksonly"""
from test_framework.messages import msg_tx, CTransaction, FromHex
from test_framework.p2p import P2PInterface
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import assert_equal
class P2PBlocksOnly(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = False
self.num_nodes = 1
self.extra_args = [["-blocksonly"]]
def run_test(self):
block_relay_peer = self.nodes[0].add_p2p_connection(P2PInterface())
self.log.info('Check that txs from p2p are rejected and result in disconnect')
prevtx = self.nodes[0].getblock(self.nodes[0].getblockhash(1), 2)['tx'][0]
rawtx = self.nodes[0].createrawtransaction(
inputs=[{
'txid': prevtx['txid'],
'vout': 0
}],
outputs=[{
self.nodes[0].get_deterministic_priv_key().address: 50 - 0.00125
}],
)
sigtx = self.nodes[0].signrawtransactionwithkey(
hexstring=rawtx,
privkeys=[self.nodes[0].get_deterministic_priv_key().key],
prevtxs=[{
'txid': prevtx['txid'],
'vout': 0,
'scriptPubKey': prevtx['vout'][0]['scriptPubKey']['hex'],
}],
)['hex']
assert_equal(self.nodes[0].getnetworkinfo()['localrelay'], False)
with self.nodes[0].assert_debug_log(['transaction sent in violation of protocol peer=0']):
block_relay_peer.send_message(msg_tx(FromHex(CTransaction(), sigtx)))
block_relay_peer.wait_for_disconnect()
assert_equal(self.nodes[0].getmempoolinfo()['size'], 0)
# Remove the disconnected peer and add a new one.
del self.nodes[0].p2ps[0]
tx_relay_peer = self.nodes[0].add_p2p_connection(P2PInterface())
self.log.info('Check that txs from rpc are not rejected and relayed to other peers')
assert_equal(self.nodes[0].getpeerinfo()[0]['relaytxes'], True)
txid = self.nodes[0].testmempoolaccept([sigtx])[0]['txid']
with self.nodes[0].assert_debug_log(['received getdata for: wtx {} peer=1'.format(txid)]):
self.nodes[0].sendrawtransaction(sigtx)
tx_relay_peer.wait_for_tx(txid)
assert_equal(self.nodes[0].getmempoolinfo()['size'], 1)
self.log.info('Check that txs from peers with relay-permission are not rejected and relayed to others')
self.log.info("Restarting node 0 with relay permission and blocksonly")
self.restart_node(0, ["-persistmempool=0", "-whitelist=relay@127.0.0.1", "-blocksonly"])
assert_equal(self.nodes[0].getrawmempool(), [])
first_peer = self.nodes[0].add_p2p_connection(P2PInterface())
second_peer = self.nodes[0].add_p2p_connection(P2PInterface())
peer_1_info = self.nodes[0].getpeerinfo()[0]
assert_equal(peer_1_info['permissions'], ['relay'])
peer_2_info = self.nodes[0].getpeerinfo()[1]
assert_equal(peer_2_info['permissions'], ['relay'])
assert_equal(self.nodes[0].testmempoolaccept([sigtx])[0]['allowed'], True)
txid = self.nodes[0].testmempoolaccept([sigtx])[0]['txid']
self.log.info('Check that the tx from first_peer with relay-permission is relayed to others (ie.second_peer)')
with self.nodes[0].assert_debug_log(["received getdata"]):
# Note that normally, first_peer would never send us transactions since we're a blocksonly node.
# By activating blocksonly, we explicitly tell our peers that they should not send us transactions,
# and Bitcoin Core respects that choice and will not send transactions.
# But if, for some reason, first_peer decides to relay transactions to us anyway, we should relay them to
# second_peer since we gave relay permission to first_peer.
# See https://github.com/bitcoin/bitcoin/issues/19943 for details.
first_peer.send_message(msg_tx(FromHex(CTransaction(), sigtx)))
self.log.info('Check that the peer with relay-permission is still connected after sending the transaction')
assert_equal(first_peer.is_connected, True)
second_peer.wait_for_tx(txid)
assert_equal(self.nodes[0].getmempoolinfo()['size'], 1)
self.log.info("Relay-permission peer's transaction is accepted and relayed")
if __name__ == '__main__':
P2PBlocksOnly().main()
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