#!/usr/bin/env python3 # Copyright (c) 2019 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()