test/functional/node_network_limited.py

   1 #!/usr/bin/env python3
   2 # Copyright (c) 2017 The Bitcoin Core developers
   3 # Distributed under the MIT software license, see the accompanying
   4 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5 """Tests NODE_NETWORK_LIMITED.
   6
   7 Tests that a node configured with -prune=550 signals NODE_NETWORK_LIMITED correctly
   8 and that it responds to getdata requests for blocks correctly:
   9     - send a block within 288 + 2 of the tip
  10     - disconnect peers who request blocks older than that."""
  11 from test_framework.messages import CInv, msg_getdata
  12 from test_framework.mininode import NODE_BLOOM, NODE_NETWORK_LIMITED, NODE_WITNESS, NetworkThread, P2PInterface
  13 from test_framework.test_framework import BitcoinTestFramework
  14 from test_framework.util import assert_equal
  15
  16 class P2PIgnoreInv(P2PInterface):
  17     def on_inv(self, message):
  18         # The node will send us invs for other blocks. Ignore them.
  19         pass
  20
  21     def send_getdata_for_block(self, blockhash):
  22         getdata_request = msg_getdata()
  23         getdata_request.inv.append(CInv(2, int(blockhash, 16)))
  24         self.send_message(getdata_request)
  25
  26 class NodeNetworkLimitedTest(BitcoinTestFramework):
  27     def set_test_params(self):
  28         self.setup_clean_chain = True
  29         self.num_nodes = 1
  30         self.extra_args = [['-prune=550']]
  31
  32     def run_test(self):
  33         node = self.nodes[0].add_p2p_connection(P2PIgnoreInv())
  34         NetworkThread().start()
  35         node.wait_for_verack()
  36
  37         expected_services = NODE_BLOOM | NODE_WITNESS | NODE_NETWORK_LIMITED
  38
  39         self.log.info("Check that node has signalled expected services.")
  40         assert_equal(node.nServices, expected_services)
  41
  42         self.log.info("Check that the localservices is as expected.")
  43         assert_equal(int(self.nodes[0].getnetworkinfo()['localservices'], 16), expected_services)
  44
  45         self.log.info("Mine enough blocks to reach the NODE_NETWORK_LIMITED range.")
  46         blocks = self.nodes[0].generate(292)
  47
  48         self.log.info("Make sure we can max retrive block at tip-288.")
  49         node.send_getdata_for_block(blocks[1])  # last block in valid range
  50         node.wait_for_block(int(blocks[1], 16), timeout=3)
  51
  52         self.log.info("Requesting block at height 2 (tip-289) must fail (ignored).")
  53         node.send_getdata_for_block(blocks[0])  # first block outside of the 288+2 limit
  54         node.wait_for_disconnect(5)
  55
  56 if __name__ == '__main__':
  57     NodeNetworkLimitedTest().main()