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.
  
  #
  # Test rpc http basics
  #
  
  from test_framework.test_framework import GasbitTestFramework
  from test_framework.util import *
  import base64
  
  try:
      import http.client as httplib
  except ImportError:
      import httplib
  try:
      import urllib.parse as urlparse
  except ImportError:
      import urlparse
  
  class HTTPBasicsTest (GasbitTestFramework):
      def setup_nodes(self):
          return start_nodes(4, self.options.tmpdir)
  
      def run_test(self):
  
          #################################################
          # lowlevel check for http persistent connection #
          #################################################
          url = urlparse.urlparse(self.nodes[0].url)
          authpair = url.username + ':' + url.password
          headers = {"Authorization": "Basic " + base64.b64encode(authpair)}
  
          conn = httplib.HTTPConnection(url.hostname, url.port)
          conn.connect()
          conn.request('POST', '/', '{"method": "getbestblockhash"}', headers)
          out1 = conn.getresponse().read()
          assert_equal('"error":null' in out1, True)
          assert_equal(conn.sock!=None, True) #according to http/1.1 connection must still be open!
  
          #send 2nd request without closing connection
          conn.request('POST', '/', '{"method": "getchaintips"}', headers)
          out2 = conn.getresponse().read()
          assert_equal('"error":null' in out1, True) #must also response with a correct json-rpc message
          assert_equal(conn.sock!=None, True) #according to http/1.1 connection must still be open!
          conn.close()
  
          #same should be if we add keep-alive because this should be the std. behaviour
          headers = {"Authorization": "Basic " + base64.b64encode(authpair), "Connection": "keep-alive"}
  
          conn = httplib.HTTPConnection(url.hostname, url.port)
          conn.connect()
          conn.request('POST', '/', '{"method": "getbestblockhash"}', headers)
          out1 = conn.getresponse().read()
          assert_equal('"error":null' in out1, True)
          assert_equal(conn.sock!=None, True) #according to http/1.1 connection must still be open!
  
          #send 2nd request without closing connection
          conn.request('POST', '/', '{"method": "getchaintips"}', headers)
          out2 = conn.getresponse().read()
          assert_equal('"error":null' in out1, True) #must also response with a correct json-rpc message
          assert_equal(conn.sock!=None, True) #according to http/1.1 connection must still be open!
          conn.close()
  
          #now do the same with "Connection: close"
          headers = {"Authorization": "Basic " + base64.b64encode(authpair), "Connection":"close"}
  
          conn = httplib.HTTPConnection(url.hostname, url.port)
          conn.connect()
          conn.request('POST', '/', '{"method": "getbestblockhash"}', headers)
          out1 = conn.getresponse().read()
          assert_equal('"error":null' in out1, True)
          assert_equal(conn.sock!=None, False) #now the connection must be closed after the response
  
          #node1 (2nd node) is running with disabled keep-alive option
          urlNode1 = urlparse.urlparse(self.nodes[1].url)
          authpair = urlNode1.username + ':' + urlNode1.password
          headers = {"Authorization": "Basic " + base64.b64encode(authpair)}
  
          conn = httplib.HTTPConnection(urlNode1.hostname, urlNode1.port)
          conn.connect()
          conn.request('POST', '/', '{"method": "getbestblockhash"}', headers)
          out1 = conn.getresponse().read()
          assert_equal('"error":null' in out1, True)
  
          #node2 (third node) is running with standard keep-alive parameters which means keep-alive is on
          urlNode2 = urlparse.urlparse(self.nodes[2].url)
          authpair = urlNode2.username + ':' + urlNode2.password
          headers = {"Authorization": "Basic " + base64.b64encode(authpair)}
  
          conn = httplib.HTTPConnection(urlNode2.hostname, urlNode2.port)
          conn.connect()
          conn.request('POST', '/', '{"method": "getbestblockhash"}', headers)
          out1 = conn.getresponse().read()
          assert_equal('"error":null' in out1, True)
          assert_equal(conn.sock!=None, True) #connection must be closed because gasbitd should use keep-alive by default
  
          # Check excessive request size
          conn = httplib.HTTPConnection(urlNode2.hostname, urlNode2.port)
          conn.connect()
          conn.request('GET', '/' + ('x'*1000), '', headers)
          out1 = conn.getresponse()
          assert_equal(out1.status, httplib.NOT_FOUND)
  
          conn = httplib.HTTPConnection(urlNode2.hostname, urlNode2.port)
          conn.connect()
          conn.request('GET', '/' + ('x'*10000), '', headers)
          out1 = conn.getresponse()
          assert_equal(out1.status, httplib.BAD_REQUEST)
  
  
  if __name__ == '__main__':
      HTTPBasicsTest ().main ()
  