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5bda9afcf6
fa21568208 qa: Avoid race in p2p_invalid_block by waiting for the block request (MarcoFalke) 6c787d340c tests: Make feature_block pass on centos (MarcoFalke) Pull request description: This hopefully fixes #14661, which I believe is caused by a race in `send_blocks_and_test`. By setting `request_block=False` we only effectively check `node.getbestblockhash() != blocks[-1].hash` before returning and checking the debug.log. By setting `request_block=True` (the default) we make sure that we send the block, then sync with a ping before asserting on the debug.log. Even if this patch doesn't fix the issue, it is good cleanup: There is no reason to not wait for the blocks to be requested, since in all these cases the header gives no indication that the block is consensus invalid. So this patch makes the test also a bit stricter and more useful. Unrelated to this, I also include a fix that makes the tests pass on latest CentOS. Tree-SHA512: c7abee3b7dc790a8af6c289159a7751bd962f6fa16c1537e7e21a0a0ef05b9596d1f4eb75319614603c05cb803e021314fa3596508ba443edd03046b25527e0f
110 lines
4.2 KiB
Python
Executable File
110 lines
4.2 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2015-2016 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test node responses to invalid blocks.
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In this test we connect to one node over p2p, and test block requests:
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1) Valid blocks should be requested and become chain tip.
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2) Invalid block with duplicated transaction should be re-requested.
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3) Invalid block with bad coinbase value should be rejected and not
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re-requested.
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"""
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import copy
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from test_framework.blocktools import create_block, create_coinbase, create_tx_with_script
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from test_framework.messages import COIN
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from test_framework.mininode import P2PDataStore
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import assert_equal
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class InvalidBlockRequestTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 1
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self.setup_clean_chain = True
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self.extra_args = [["-whitelist=127.0.0.1"]]
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def run_test(self):
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# Add p2p connection to node0
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node = self.nodes[0] # convenience reference to the node
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node.add_p2p_connection(P2PDataStore())
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best_block = node.getblock(node.getbestblockhash())
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tip = int(node.getbestblockhash(), 16)
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height = best_block["height"] + 1
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block_time = best_block["time"] + 1
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self.log.info("Create a new block with an anyone-can-spend coinbase")
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height = 1
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block = create_block(tip, create_coinbase(height), block_time)
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block.solve()
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# Save the coinbase for later
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block1 = block
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tip = block.sha256
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node.p2p.send_blocks_and_test([block1], node, success=True)
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self.log.info("Mature the block.")
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node.generate(100)
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best_block = node.getblock(node.getbestblockhash())
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tip = int(node.getbestblockhash(), 16)
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height = best_block["height"] + 1
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block_time = best_block["time"] + 1
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# Use merkle-root malleability to generate an invalid block with
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# same blockheader.
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# Manufacture a block with 3 transactions (coinbase, spend of prior
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# coinbase, spend of that spend). Duplicate the 3rd transaction to
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# leave merkle root and blockheader unchanged but invalidate the block.
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self.log.info("Test merkle root malleability.")
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block2 = create_block(tip, create_coinbase(height), block_time)
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block_time += 1
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# b'0x51' is OP_TRUE
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tx1 = create_tx_with_script(block1.vtx[0], 0, script_sig=b'\x51', amount=50 * COIN)
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tx2 = create_tx_with_script(tx1, 0, script_sig=b'\x51', amount=50 * COIN)
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block2.vtx.extend([tx1, tx2])
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block2.hashMerkleRoot = block2.calc_merkle_root()
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block2.rehash()
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block2.solve()
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orig_hash = block2.sha256
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block2_orig = copy.deepcopy(block2)
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# Mutate block 2
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block2.vtx.append(tx2)
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assert_equal(block2.hashMerkleRoot, block2.calc_merkle_root())
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assert_equal(orig_hash, block2.rehash())
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assert block2_orig.vtx != block2.vtx
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node.p2p.send_blocks_and_test([block2], node, success=False, reject_code=16, reject_reason=b'bad-txns-duplicate')
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# Check transactions for duplicate inputs
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self.log.info("Test duplicate input block.")
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block2_orig.vtx[2].vin.append(block2_orig.vtx[2].vin[0])
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block2_orig.vtx[2].rehash()
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block2_orig.hashMerkleRoot = block2_orig.calc_merkle_root()
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block2_orig.rehash()
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block2_orig.solve()
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node.p2p.send_blocks_and_test([block2_orig], node, success=False, reject_code=16, reject_reason=b'bad-txns-inputs-duplicate')
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self.log.info("Test very broken block.")
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block3 = create_block(tip, create_coinbase(height), block_time)
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block_time += 1
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block3.vtx[0].vout[0].nValue = 1000 * COIN # Too high!
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block3.vtx[0].sha256 = None
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block3.vtx[0].calc_sha256()
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block3.hashMerkleRoot = block3.calc_merkle_root()
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block3.rehash()
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block3.solve()
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node.p2p.send_blocks_and_test([block3], node, success=False, reject_code=16, reject_reason=b'bad-cb-amount')
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if __name__ == '__main__':
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InvalidBlockRequestTest().main()
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