text: #!/usr/bin/env python2
  # Copyright (c) 2014-2015 The Bitcoin Core developers
  # Distributed under the MIT software license, see the accompanying
  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  from test_framework.test_framework import HellebitTestFramework
  from test_framework.util import *
  
  
  def check_array_result(object_array, to_match, expected):
      """
      Pass in array of JSON objects, a dictionary with key/value pairs
      to match against, and another dictionary with expected key/value
      pairs.
      """
      num_matched = 0
      for item in object_array:
          all_match = True
          for key,value in to_match.items():
              if item[key] != value:
                  all_match = False
          if not all_match:
              continue
          for key,value in expected.items():
              if item[key] != value:
                  raise AssertionError("%s : expected %s=%s"%(str(item), str(key), str(value)))
              num_matched = num_matched+1
      if num_matched == 0:
          raise AssertionError("No objects matched %s"%(str(to_match)))
  
  import threading
  
  class LongpollThread(threading.Thread):
      def __init__(self, node):
          threading.Thread.__init__(self)
          # query current longpollid
          templat = node.getblocktemplate()
          self.longpollid = templat['longpollid']
          # create a new connection to the node, we can't use the same
          # connection from two threads
          self.node = get_rpc_proxy(node.url, 1, timeout=600)
  
      def run(self):
          self.node.getblocktemplate({'longpollid':self.longpollid})
  
  class GetBlockTemplateLPTest(HellebitTestFramework):
      '''
      Test longpolling with getblocktemplate.
      '''
  
      def run_test(self):
          print "Warning: this test will take about 70 seconds in the best case. Be patient."
          self.nodes[0].generate(10)
          templat = self.nodes[0].getblocktemplate()
          longpollid = templat['longpollid']
          # longpollid should not change between successive invocations if nothing else happens
          templat2 = self.nodes[0].getblocktemplate()
          assert(templat2['longpollid'] == longpollid)
  
          # Test 1: test that the longpolling wait if we do nothing
          thr = LongpollThread(self.nodes[0])
          thr.start()
          # check that thread still lives
          thr.join(5)  # wait 5 seconds or until thread exits
          assert(thr.is_alive())
  
          # Test 2: test that longpoll will terminate if another node generates a block
          self.nodes[1].generate(1)  # generate a block on another node
          # check that thread will exit now that new transaction entered mempool
          thr.join(5)  # wait 5 seconds or until thread exits
          assert(not thr.is_alive())
  
          # Test 3: test that longpoll will terminate if we generate a block ourselves
          thr = LongpollThread(self.nodes[0])
          thr.start()
          self.nodes[0].generate(1)  # generate a block on another node
          thr.join(5)  # wait 5 seconds or until thread exits
          assert(not thr.is_alive())
  
          # Test 4: test that introducing a new transaction into the mempool will terminate the longpoll
          thr = LongpollThread(self.nodes[0])
          thr.start()
          # generate a random transaction and submit it
          (txid, txhex, fee) = random_transaction(self.nodes, Decimal("1.1"), Decimal("0.0"), Decimal("0.001"), 20)
          # after one minute, every 10 seconds the mempool is probed, so in 80 seconds it should have returned
          thr.join(60 + 20)
          assert(not thr.is_alive())
  
  if __name__ == '__main__':
      GetBlockTemplateLPTest().main()
  
  