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test/functional/sendheaders.py
| #!/usr/bin/env python3 | #!/usr/bin/env python3 | ||||
| # Copyright (c) 2014-2016 The Bitcoin Core developers | # Copyright (c) 2014-2016 The Bitcoin Core developers | ||||
| # Distributed under the MIT software license, see the accompanying | # Distributed under the MIT software license, see the accompanying | ||||
| # file COPYING or http://www.opensource.org/licenses/mit-license.php. | # file COPYING or http://www.opensource.org/licenses/mit-license.php. | ||||
| """Test behavior of headers messages to announce blocks. | """Test behavior of headers messages to announce blocks. | ||||
| Setup: | Setup: | ||||
| - Two nodes, two p2p connections to node0. One p2p connection should only ever | - Two nodes, two p2p connections to node0. One p2p connection should only ever | ||||
| receive inv's (omitted from testing description below, this is our control). | receive inv's (omitted from testing description below, this is our control). | ||||
| Second node is used for creating reorgs. | Second node is used for creating reorgs. | ||||
| test_null_locators | |||||
| ================== | |||||
| Sends two getheaders requests with null locator values. First request's hashstop | |||||
| value refers to validated block, while second request's hashstop value refers to | |||||
| a block which hasn't been validated. Verifies only the first request returns | |||||
| headers. | |||||
| test_nonnull_locators | |||||
| ===================== | |||||
| Part 1: No headers announcements before "sendheaders" | Part 1: No headers announcements before "sendheaders" | ||||
| a. node mines a block [expect: inv] | a. node mines a block [expect: inv] | ||||
| send getdata for the block [expect: block] | send getdata for the block [expect: block] | ||||
| b. node mines another block [expect: inv] | b. node mines another block [expect: inv] | ||||
| send getheaders and getdata [expect: headers, then block] | send getheaders and getdata [expect: headers, then block] | ||||
| c. node mines another block [expect: inv] | c. node mines another block [expect: inv] | ||||
| peer mines a block, announces with header [expect: getdata] | peer mines a block, announces with header [expect: getdata] | ||||
| d. node mines another block [expect: inv] | d. node mines another block [expect: inv] | ||||
| ▲ Show 20 Lines • Show All 215 Lines • ▼ Show 20 Lines | def run_test(self): | ||||
| # Test logic begins here | # Test logic begins here | ||||
| inv_node.wait_for_verack() | inv_node.wait_for_verack() | ||||
| test_node.wait_for_verack() | test_node.wait_for_verack() | ||||
| # Ensure verack's have been processed by our peer | # Ensure verack's have been processed by our peer | ||||
| inv_node.sync_with_ping() | inv_node.sync_with_ping() | ||||
| test_node.sync_with_ping() | test_node.sync_with_ping() | ||||
| self.test_null_locators(test_node) | |||||
| self.test_nonnull_locators(test_node, inv_node) | |||||
| def test_null_locators(self, test_node): | |||||
| tip = self.nodes[0].getblockheader(self.nodes[0].generate(1)[0]) | |||||
| tip_hash = int(tip["hash"], 16) | |||||
| self.log.info( | |||||
| "Verify getheaders with null locator and valid hashstop returns headers.") | |||||
| test_node.clear_last_announcement() | |||||
| test_node.get_headers(locator=[], hashstop=tip_hash) | |||||
| assert_equal(test_node.check_last_announcement( | |||||
| headers=[tip_hash]), True) | |||||
| self.log.info( | |||||
| "Verify getheaders with null locator and invalid hashstop does not return headers.") | |||||
| block = create_block(int(tip["hash"], 16), create_coinbase( | |||||
| tip["height"] + 1), tip["mediantime"] + 1) | |||||
| block.solve() | |||||
| test_node.send_header_for_blocks([block]) | |||||
| test_node.clear_last_announcement() | |||||
| test_node.get_headers(locator=[], hashstop=int(block.hash, 16)) | |||||
| test_node.sync_with_ping() | |||||
| assert_equal(test_node.block_announced, False) | |||||
| test_node.send_message(msg_block(block)) | |||||
| def test_nonnull_locators(self, test_node, inv_node): | |||||
| tip = int(self.nodes[0].getbestblockhash(), 16) | tip = int(self.nodes[0].getbestblockhash(), 16) | ||||
| # PART 1 | # PART 1 | ||||
| # 1. Mine a block; expect inv announcements each time | # 1. Mine a block; expect inv announcements each time | ||||
| self.log.info( | self.log.info( | ||||
| "Part 1: headers don't start before sendheaders message...") | "Part 1: headers don't start before sendheaders message...") | ||||
| for i in range(4): | for i in range(4): | ||||
| old_tip = tip | old_tip = tip | ||||
| ▲ Show 20 Lines • Show All 337 Lines • Show Last 20 Lines | |||||