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#!/usr/bin/env python3
# Copyright (c) 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 GETDATA processing behavior"""
from collections import defaultdict
from test_framework.messages import (
CInv,
msg_getdata,
)
from test_framework.p2p import P2PInterface
from test_framework.test_framework import BitcoinTestFramework
class P2PStoreBlock(P2PInterface):
def __init__(self):
super().__init__()
self.blocks = defaultdict(int)
def on_block(self, message):
message.block.calc_sha256()
self.blocks[message.block.sha256] += 1
class GetdataTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
def run_test(self):
p2p_block_store = self.nodes[0].add_p2p_connection(P2PStoreBlock())
self.log.info("test that an invalid GETDATA doesn't prevent processing of future messages")
# Send invalid message and verify that node responds to later ping
invalid_getdata = msg_getdata()
invalid_getdata.inv.append(CInv(t=0, h=0)) # INV type 0 is invalid.
p2p_block_store.send_and_ping(invalid_getdata)
# Check getdata still works by fetching tip block
best_block = int(self.nodes[0].getbestblockhash(), 16)
good_getdata = msg_getdata()
good_getdata.inv.append(CInv(t=2, h=best_block))
p2p_block_store.send_and_ping(good_getdata)
p2p_block_store.wait_until(lambda: p2p_block_store.blocks[best_block] == 1)
if __name__ == '__main__':
GetdataTest().main()