text: #!/usr/bin/env python3
  # Copyright (c) 2020-2021 The Eleccoin Core developers
  # Distributed under the MIT software license, see the accompanying
  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
  """Test node responses to invalid locators.
  """
  
  from test_framework.messages import msg_getheaders, msg_getblocks, MAX_LOCATOR_SZ
  from test_framework.p2p import P2PInterface
  from test_framework.test_framework import EleccoinTestFramework
  
  
  class InvalidLocatorTest(EleccoinTestFramework):
      def set_test_params(self):
          self.num_nodes = 1
          self.setup_clean_chain = False
  
      def run_test(self):
          node = self.nodes[0]  # convenience reference to the node
          node.generatetoaddress(1, node.get_deterministic_priv_key().address)  # Get node out of IBD
  
          self.log.info('Test max locator size')
          block_count = node.getblockcount()
          for msg in [msg_getheaders(), msg_getblocks()]:
              self.log.info('Wait for disconnect when sending {} hashes in locator'.format(MAX_LOCATOR_SZ + 1))
              exceed_max_peer = node.add_p2p_connection(P2PInterface())
              msg.locator.vHave = [int(node.getblockhash(i - 1), 16) for i in range(block_count, block_count - (MAX_LOCATOR_SZ + 1), -1)]
              exceed_max_peer.send_message(msg)
              exceed_max_peer.wait_for_disconnect()
              node.disconnect_p2ps()
  
              self.log.info('Wait for response when sending {} hashes in locator'.format(MAX_LOCATOR_SZ))
              within_max_peer = node.add_p2p_connection(P2PInterface())
              msg.locator.vHave = [int(node.getblockhash(i - 1), 16) for i in range(block_count, block_count - (MAX_LOCATOR_SZ), -1)]
              within_max_peer.send_message(msg)
              if type(msg) == msg_getheaders:
                  within_max_peer.wait_for_header(node.getbestblockhash())
              else:
                  within_max_peer.wait_for_block(int(node.getbestblockhash(), 16))
  
  
  if __name__ == '__main__':
      InvalidLocatorTest().main()
  