python类HTTPErrorProcessor()的实例源码

def test_errors(self):
        h = urllib2.HTTPErrorProcessor()
        o = h.parent = MockOpener()

        url = "http://example.com/"
        req = Request(url)
        # all 2xx are passed through
        r = MockResponse(200, "OK", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        r = MockResponse(202, "Accepted", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        r = MockResponse(206, "Partial content", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        # anything else calls o.error (and MockOpener returns None, here)
        r = MockResponse(502, "Bad gateway", {}, "", url)
        self.assertTrue(h.http_response(req, r) is None)
        self.assertEqual(o.proto, "http")  # o.error called
        self.assertEqual(o.args, (req, r, 502, "Bad gateway", {}))

def test_errors(self):
        h = urllib2.HTTPErrorProcessor()
        o = h.parent = MockOpener()

        url = "http://example.com/"
        req = Request(url)
        # all 2xx are passed through
        r = MockResponse(200, "OK", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        r = MockResponse(202, "Accepted", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        r = MockResponse(206, "Partial content", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        # anything else calls o.error (and MockOpener returns None, here)
        r = MockResponse(502, "Bad gateway", {}, "", url)
        self.assertTrue(h.http_response(req, r) is None)
        self.assertEqual(o.proto, "http")  # o.error called
        self.assertEqual(o.args, (req, r, 502, "Bad gateway", {}))

def _urllib2_fetch(self, uri, params, method=None):
        # install error processor to handle HTTP 201 response correctly
        if self.opener == None:
            self.opener = urllib2.build_opener(HTTPErrorProcessor)
            urllib2.install_opener(self.opener)

        if method and method == 'GET':
            uri = self._build_get_uri(uri, params)
            req = PlivoUrlRequest(uri)
        else:
            req = PlivoUrlRequest(uri, urllib.urlencode(params))
            if method and (method == 'DELETE' or method == 'PUT'):
                req.http_method = method

        authstring = base64.encodestring('%s:%s' % (self.auth_id, self.auth_token))
        authstring = authstring.replace('\n', '')
        req.add_header("Authorization", "Basic %s" % authstring)

        response = urllib2.urlopen(req)
        return response.read()

def _urllib2_fetch(self, uri, params, method=None):
        # install error processor to handle HTTP 201 response correctly
        if self.opener == None:
            self.opener = urllib2.build_opener(HTTPErrorProcessor)
            urllib2.install_opener(self.opener)

        if method and method == 'GET':
            uri = self._build_get_uri(uri, params)
            req = PlivoUrlRequest(uri)
        else:
            req = PlivoUrlRequest(uri, urllib.urlencode(params))
            if method and (method == 'DELETE' or method == 'PUT'):
                req.http_method = method

        authstring = base64.encodestring('%s:%s' % (self.auth_id, self.auth_token))
        authstring = authstring.replace('\n', '')
        req.add_header("Authorization", "Basic %s" % authstring)

        response = urllib2.urlopen(req)
        return response.read()

def _urllib2_fetch(self, uri, params, method=None):
        # install error processor to handle HTTP 201 response correctly
        if self.opener == None:
            self.opener = urllib2.build_opener(HTTPErrorProcessor)
            urllib2.install_opener(self.opener)

        if method and method == 'GET':
            uri = self._build_get_uri(uri, params)
            req = PlivoUrlRequest(uri)
        else:
            req = PlivoUrlRequest(uri, urllib.urlencode(params))
            if method and (method == 'DELETE' or method == 'PUT'):
                req.http_method = method

        authstring = base64.encodestring('%s:%s' % (self.auth_id, self.auth_token))
        authstring = authstring.replace('\n', '')
        req.add_header("Authorization", "Basic %s" % authstring)

        response = urllib2.urlopen(req)
        return response.read()

def test_errors(self):
        h = urllib2.HTTPErrorProcessor()
        o = h.parent = MockOpener()

        url = "http://example.com/"
        req = Request(url)
        # all 2xx are passed through
        r = MockResponse(200, "OK", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        r = MockResponse(202, "Accepted", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        r = MockResponse(206, "Partial content", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        # anything else calls o.error (and MockOpener returns None, here)
        r = MockResponse(502, "Bad gateway", {}, "", url)
        self.assertTrue(h.http_response(req, r) is None)
        self.assertEqual(o.proto, "http")  # o.error called
        self.assertEqual(o.args, (req, r, 502, "Bad gateway", {}))

def test_errors(self):
        h = urllib2.HTTPErrorProcessor()
        o = h.parent = MockOpener()

        url = "http://example.com/"
        req = Request(url)
        # all 2xx are passed through
        r = MockResponse(200, "OK", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        r = MockResponse(202, "Accepted", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        r = MockResponse(206, "Partial content", {}, "", url)
        newr = h.http_response(req, r)
        self.assertTrue(r is newr)
        self.assertTrue(not hasattr(o, "proto"))  # o.error not called
        # anything else calls o.error (and MockOpener returns None, here)
        r = MockResponse(502, "Bad gateway", {}, "", url)
        self.assertTrue(h.http_response(req, r) is None)
        self.assertEqual(o.proto, "http")  # o.error called
        self.assertEqual(o.args, (req, r, 502, "Bad gateway", {}))

def __init__(self, base_url, exc_class=None, logger=None):
    """
    @param base_url: The base url to the API.
    @param exc_class: An exception class to handle non-200 results.

    Creates an HTTP(S) client to connect to the Cloudera Manager API.
    """
    self._base_url = base_url.rstrip('/')
    self._exc_class = exc_class or RestException
    self._logger = logger or LOG
    self._headers = { }

    # Make a basic auth handler that does nothing. Set credentials later.
    self._passmgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
    authhandler = urllib2.HTTPBasicAuthHandler(self._passmgr)

    # Make a cookie processor
    cookiejar = cookielib.CookieJar()

    self._opener = urllib2.build_opener(
        HTTPErrorProcessor(),
        urllib2.HTTPCookieProcessor(cookiejar),
        authhandler)

def getHtml(url, tryEncode=True, followRedirect=True):
   class NoRedirection(urllib2.HTTPErrorProcessor):
      def http_response(self, request, response):
         code, msg, hdrs = response.code, response.msg, response.info()
         return response
      https_response = http_response
   if followRedirect:
      opener=urllib2.build_opener()
   else:
      opener=urllib2.build_opener(NoRedirection)
   try:
      page=opener.open(url)
      pageHtml=page.read()
   except:
      opener.close()
      return None
   if tryEncode:
      try:
         charset = re.findall('charset=(.*?)$', page.info()['Content-Type'])[0].lower()
         if charset != 'utf-8': pageHtml = pageHtml.decode(charset) #?????? ???????? ? ???????????
      except: pass
      pageHtml = strUniEncode(pageHtml)
   opener.close()
   return pageHtml

def http_response(self, request, response):
        code = response.code
        if config.TRACE_API_CALLS:
            logger.info("took %2.2fs: (%i)" % (time.time()-request.start_time,code))
        if code/100 in (2, 4, 5):
            return response
        else:
            urllib2.HTTPErrorProcessor.http_response(self, request, response)

def _prepare_http_request(self, uri, params, method='POST'):
        # install error processor to handle HTTP 201 response correctly
        if self.opener is None:
            self.opener = urllib2.build_opener(HTTPErrorProcessor)
            urllib2.install_opener(self.opener)

        proxy_url = self.proxy_url
        if proxy_url:
            proxy = proxy_url.split('http://')[1]
            proxyhandler = urllib2.ProxyHandler({'http': proxy})
            opener = urllib2.build_opener(proxyhandler)
            urllib2.install_opener(opener)

        if method and method == 'GET':
            uri = self._build_get_uri(uri, params)
            _request = HTTPUrlRequest(uri)
        else:
            _request = HTTPUrlRequest(uri, urllib.urlencode(params))
            if method and (method == 'DELETE' or method == 'PUT'):
                _request.http_method = method

        _request.add_header('User-Agent', self.USER_AGENT)

        if self.auth_id and self.auth_token:
            # append the POST variables sorted by key to the uri
            # and transform None to '' and unicode to string
            s = uri
            for k, v in sorted(params.items()):
                if k:
                    if v is None:
                        x = ''
                    else:
                        x = str(v)
                    s += k + x

            # compute signature and compare signatures
            signature =  base64.encodestring(hmac.new(self.auth_token, s, sha1).\
                                                                digest()).strip()
            _request.add_header("X-PLIVO-SIGNATURE", "%s" % signature)
        return _request

def _GetOpener(self):
    """Returns an OpenerDirector that supports cookies and ignores redirects.

    Returns:
      A urllib2.OpenerDirector object.
    """
    opener = urllib2.OpenerDirector()
    opener.add_handler(urllib2.ProxyHandler())
    opener.add_handler(urllib2.UnknownHandler())
    opener.add_handler(urllib2.HTTPHandler())
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(urllib2.HTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    if self.save_cookies:
      self.cookie_file = os.path.expanduser("~/.codereview_upload_cookies")
      self.cookie_jar = cookielib.MozillaCookieJar(self.cookie_file)
      if os.path.exists(self.cookie_file):
        try:
          self.cookie_jar.load()
          self.authenticated = True
          StatusUpdate("Loaded authentication cookies from %s" %
                       self.cookie_file)
        except (cookielib.LoadError, IOError):
          # Failed to load cookies - just ignore them.
          pass
      else:
        # Create an empty cookie file with mode 600
        fd = os.open(self.cookie_file, os.O_CREAT, 0600)
        os.close(fd)
      # Always chmod the cookie file
      os.chmod(self.cookie_file, 0600)
    else:
      # Don't save cookies across runs of update.py.
      self.cookie_jar = cookielib.CookieJar()
    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
    return opener

def _GetOpener(self):
    """Returns an OpenerDirector that supports cookies and ignores redirects.

    Returns:
      A urllib2.OpenerDirector object.
    """
    opener = urllib2.OpenerDirector()
    opener.add_handler(urllib2.ProxyHandler())
    opener.add_handler(urllib2.UnknownHandler())
    opener.add_handler(urllib2.HTTPHandler())
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(urllib2.HTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    if self.save_cookies:
      self.cookie_file = os.path.expanduser("~/.codereview_upload_cookies")
      self.cookie_jar = cookielib.MozillaCookieJar(self.cookie_file)
      if os.path.exists(self.cookie_file):
        try:
          self.cookie_jar.load()
          self.authenticated = True
          StatusUpdate("Loaded authentication cookies from %s" %
                       self.cookie_file)
        except (cookielib.LoadError, IOError):
          # Failed to load cookies - just ignore them.
          pass
      else:
        # Create an empty cookie file with mode 600
        fd = os.open(self.cookie_file, os.O_CREAT, 0600)
        os.close(fd)
      # Always chmod the cookie file
      os.chmod(self.cookie_file, 0600)
    else:
      # Don't save cookies across runs of update.py.
      self.cookie_jar = cookielib.CookieJar()
    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
    return opener

def _GetOpener(self):
    """Returns an OpenerDirector that supports cookies and ignores redirects.

    Returns:
      A urllib2.OpenerDirector object.
    """
    opener = urllib2.OpenerDirector()
    opener.add_handler(urllib2.ProxyHandler())
    opener.add_handler(urllib2.UnknownHandler())
    opener.add_handler(urllib2.HTTPHandler())
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(urllib2.HTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    if self.save_cookies:
      self.cookie_file = os.path.expanduser("~/.codereview_upload_cookies")
      self.cookie_jar = cookielib.MozillaCookieJar(self.cookie_file)
      if os.path.exists(self.cookie_file):
        try:
          self.cookie_jar.load()
          self.authenticated = True
          StatusUpdate("Loaded authentication cookies from %s" %
                       self.cookie_file)
        except (cookielib.LoadError, IOError):
          # Failed to load cookies - just ignore them.
          pass
      else:
        # Create an empty cookie file with mode 600
        fd = os.open(self.cookie_file, os.O_CREAT, 0o600)
        os.close(fd)
      # Always chmod the cookie file
      os.chmod(self.cookie_file, 0o600)
    else:
      # Don't save cookies across runs of update.py.
      self.cookie_jar = cookielib.CookieJar()
    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
    return opener

def _GetOpener(self):
    """Returns an OpenerDirector that supports cookies and ignores redirects.

    Returns:
      A urllib2.OpenerDirector object.
    """
    opener = urllib2.OpenerDirector()
    opener.add_handler(urllib2.ProxyHandler())
    opener.add_handler(urllib2.UnknownHandler())
    opener.add_handler(urllib2.HTTPHandler())
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(urllib2.HTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    if self.save_cookies:
      self.cookie_file = os.path.expanduser("~/.codereview_upload_cookies")
      self.cookie_jar = cookielib.MozillaCookieJar(self.cookie_file)
      if os.path.exists(self.cookie_file):
        try:
          self.cookie_jar.load()
          self.authenticated = True
          StatusUpdate("Loaded authentication cookies from %s" %
                       self.cookie_file)
        except (cookielib.LoadError, IOError):
          # Failed to load cookies - just ignore them.
          pass
      else:
        # Create an empty cookie file with mode 600
        fd = os.open(self.cookie_file, os.O_CREAT, 0o600)
        os.close(fd)
      # Always chmod the cookie file
      os.chmod(self.cookie_file, 0o600)
    else:
      # Don't save cookies across runs of update.py.
      self.cookie_jar = cookielib.CookieJar()
    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
    return opener

def _GetOpener(self):
    """Returns an OpenerDirector that supports cookies and ignores redirects.

    Returns:
      A urllib2.OpenerDirector object.
    """
    opener = urllib2.OpenerDirector()
    opener.add_handler(urllib2.ProxyHandler())
    opener.add_handler(urllib2.UnknownHandler())
    opener.add_handler(urllib2.HTTPHandler())
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(urllib2.HTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    if self.save_cookies:
      self.cookie_file = os.path.expanduser("~/.codereview_upload_cookies")
      self.cookie_jar = cookielib.MozillaCookieJar(self.cookie_file)
      if os.path.exists(self.cookie_file):
        try:
          self.cookie_jar.load()
          self.authenticated = True
          StatusUpdate("Loaded authentication cookies from %s" %
                       self.cookie_file)
        except (cookielib.LoadError, IOError):
          # Failed to load cookies - just ignore them.
          pass
      else:
        # Create an empty cookie file with mode 600
        fd = os.open(self.cookie_file, os.O_CREAT, 0600)
        os.close(fd)
      # Always chmod the cookie file
      os.chmod(self.cookie_file, 0600)
    else:
      # Don't save cookies across runs of update.py.
      self.cookie_jar = cookielib.CookieJar()
    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
    return opener

def _GetOpener(self):
    """Returns an OpenerDirector that supports cookies and ignores redirects.

    Returns:
      A urllib2.OpenerDirector object.
    """
    opener = urllib2.OpenerDirector()
    opener.add_handler(urllib2.ProxyHandler())
    opener.add_handler(urllib2.UnknownHandler())
    opener.add_handler(urllib2.HTTPHandler())
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(urllib2.HTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    if self.save_cookies:
      self.cookie_file = os.path.expanduser("~/.codereview_upload_cookies")
      self.cookie_jar = cookielib.MozillaCookieJar(self.cookie_file)
      if os.path.exists(self.cookie_file):
        try:
          self.cookie_jar.load()
          self.authenticated = True
          StatusUpdate("Loaded authentication cookies from %s" %
                       self.cookie_file)
        except (cookielib.LoadError, IOError):
          # Failed to load cookies - just ignore them.
          pass
      else:
        # Create an empty cookie file with mode 600
        fd = os.open(self.cookie_file, os.O_CREAT, 0o600)
        os.close(fd)
      # Always chmod the cookie file
      os.chmod(self.cookie_file, 0o600)
    else:
      # Don't save cookies across runs of update.py.
      self.cookie_jar = cookielib.CookieJar()
    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
    return opener

def http_response(self, request, response):
    if 200 <= response.code < 300:
      return response
    return urllib2.HTTPErrorProcessor.http_response(self, request, response)

def _GetOpener(self):
    """Returns an OpenerDirector that supports cookies and ignores redirects.

    Returns:
      A urllib2.OpenerDirector object.
    """
    opener = urllib2.OpenerDirector()
    opener.add_handler(fancy_urllib.FancyProxyHandler())
    opener.add_handler(urllib2.UnknownHandler())
    opener.add_handler(urllib2.HTTPHandler())
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(fancy_urllib.FancyHTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    opener.add_handler(ContentEncodingHandler())

    if self.save_cookies:
      self.cookie_jar.filename = os.path.expanduser(
          HttpRpcServer.DEFAULT_COOKIE_FILE_PATH)

      if os.path.exists(self.cookie_jar.filename):
        try:
          self.cookie_jar.load()
          self.authenticated = True
          logger.debug("Loaded authentication cookies from %s",
                       self.cookie_jar.filename)
        except (OSError, IOError, cookielib.LoadError), e:

          logger.debug("Could not load authentication cookies; %s: %s",
                       e.__class__.__name__, e)
          self.cookie_jar.filename = None
      else:


        try:
          fd = os.open(self.cookie_jar.filename, os.O_CREAT, 0600)
          os.close(fd)
        except (OSError, IOError), e:

          logger.debug("Could not create authentication cookies file; %s: %s",
                       e.__class__.__name__, e)
          self.cookie_jar.filename = None

    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
    return opener

def _GetOpener(self):
    """Returns an OpenerDirector that supports cookies and ignores redirects.

    Returns:
      A urllib2.OpenerDirector object.
    """
    opener = urllib2.OpenerDirector()
    opener.add_handler(fancy_urllib.FancyProxyHandler())
    opener.add_handler(urllib2.UnknownHandler())
    opener.add_handler(urllib2.HTTPHandler())
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(fancy_urllib.FancyHTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    opener.add_handler(ContentEncodingHandler())

    if self.save_cookies:
      self.cookie_jar.filename = os.path.expanduser(
          HttpRpcServer.DEFAULT_COOKIE_FILE_PATH)

      if os.path.exists(self.cookie_jar.filename):
        try:
          self.cookie_jar.load()
          self.authenticated = True
          logger.debug("Loaded authentication cookies from %s",
                       self.cookie_jar.filename)
        except (OSError, IOError, cookielib.LoadError), e:

          logger.debug("Could not load authentication cookies; %s: %s",
                       e.__class__.__name__, e)
          self.cookie_jar.filename = None
      else:


        try:
          fd = os.open(self.cookie_jar.filename, os.O_CREAT, 0600)
          os.close(fd)
        except (OSError, IOError), e:

          logger.debug("Could not create authentication cookies file; %s: %s",
                       e.__class__.__name__, e)
          self.cookie_jar.filename = None

    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
    return opener

def _GetOpener(self):
    """Returns an OpenerDirector that supports cookies and ignores redirects.

    Returns:
      A urllib2.OpenerDirector object.
    """
    opener = urllib2.OpenerDirector()
    opener.add_handler(fancy_urllib.FancyProxyHandler())
    opener.add_handler(urllib2.UnknownHandler())
    opener.add_handler(urllib2.HTTPHandler())
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(fancy_urllib.FancyHTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    opener.add_handler(ContentEncodingHandler())

    if self.save_cookies:
      self.cookie_jar.filename = os.path.expanduser(
          HttpRpcServer.DEFAULT_COOKIE_FILE_PATH)

      if os.path.exists(self.cookie_jar.filename):
        try:
          self.cookie_jar.load()
          self.authenticated = True
          logger.debug("Loaded authentication cookies from %s",
                       self.cookie_jar.filename)
        except (OSError, IOError, cookielib.LoadError), e:

          logger.debug("Could not load authentication cookies; %s: %s",
                       e.__class__.__name__, e)
          self.cookie_jar.filename = None
      else:


        try:
          fd = os.open(self.cookie_jar.filename, os.O_CREAT, 0600)
          os.close(fd)
        except (OSError, IOError), e:

          logger.debug("Could not create authentication cookies file; %s: %s",
                       e.__class__.__name__, e)
          self.cookie_jar.filename = None

    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
    return opener

def _GetOpener(self):
    """Returns an OpenerDirector that supports cookies and ignores redirects.

    Returns:
      A urllib2.OpenerDirector object.
    """
    opener = urllib2.OpenerDirector()
    opener.add_handler(fancy_urllib.FancyProxyHandler())
    opener.add_handler(urllib2.UnknownHandler())
    opener.add_handler(urllib2.HTTPHandler())
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(fancy_urllib.FancyHTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    opener.add_handler(ContentEncodingHandler())

    if self.save_cookies:
      self.cookie_jar.filename = os.path.expanduser(
          HttpRpcServer.DEFAULT_COOKIE_FILE_PATH)

      if os.path.exists(self.cookie_jar.filename):
        try:
          self.cookie_jar.load()
          self.authenticated = True
          logger.debug("Loaded authentication cookies from %s",
                       self.cookie_jar.filename)
        except (OSError, IOError, cookielib.LoadError), e:

          logger.debug("Could not load authentication cookies; %s: %s",
                       e.__class__.__name__, e)
          self.cookie_jar.filename = None
      else:


        try:
          fd = os.open(self.cookie_jar.filename, os.O_CREAT, 0600)
          os.close(fd)
        except (OSError, IOError), e:

          logger.debug("Could not create authentication cookies file; %s: %s",
                       e.__class__.__name__, e)
          self.cookie_jar.filename = None

    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
    return opener

def _GetOpener(self):
    """Returns an OpenerDirector that supports cookies and ignores redirects.

    Returns:
      A urllib2.OpenerDirector object.
    """
    opener = urllib2.OpenerDirector()
    opener.add_handler(fancy_urllib.FancyProxyHandler())
    opener.add_handler(urllib2.UnknownHandler())
    opener.add_handler(urllib2.HTTPHandler())
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(fancy_urllib.FancyHTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    opener.add_handler(ContentEncodingHandler())

    if self.save_cookies:
      self.cookie_jar.filename = os.path.expanduser(
          HttpRpcServer.DEFAULT_COOKIE_FILE_PATH)

      if os.path.exists(self.cookie_jar.filename):
        try:
          self.cookie_jar.load()
          self.authenticated = True
          logger.debug("Loaded authentication cookies from %s",
                       self.cookie_jar.filename)
        except (OSError, IOError, cookielib.LoadError), e:

          logger.debug("Could not load authentication cookies; %s: %s",
                       e.__class__.__name__, e)
          self.cookie_jar.filename = None
      else:


        try:
          fd = os.open(self.cookie_jar.filename, os.O_CREAT, 0600)
          os.close(fd)
        except (OSError, IOError), e:

          logger.debug("Could not create authentication cookies file; %s: %s",
                       e.__class__.__name__, e)
          self.cookie_jar.filename = None

    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
    return opener