test/http2_test/test_goaway.py

   1 # Copyright 2016 gRPC authors.
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 import logging
  16 import time
  17
  18 import http2_base_server
  19
  20
  21 class TestcaseGoaway(object):
  22     """
  23     This test does the following:
  24       Process incoming request normally, i.e. send headers, data and trailers.
  25       Then send a GOAWAY frame with the stream id of the processed request.
  26       It checks that the next request is made on a different TCP connection.
  27   """
  28
  29     def __init__(self, iteration):
  30         self._base_server = http2_base_server.H2ProtocolBaseServer()
  31         self._base_server._handlers[
  32             'RequestReceived'] = self.on_request_received
  33         self._base_server._handlers['DataReceived'] = self.on_data_received
  34         self._base_server._handlers['SendDone'] = self.on_send_done
  35         self._base_server._handlers['ConnectionLost'] = self.on_connection_lost
  36         self._ready_to_send = False
  37         self._iteration = iteration
  38
  39     def get_base_server(self):
  40         return self._base_server
  41
  42     def on_connection_lost(self, reason):
  43         logging.info('Disconnect received. Count %d' % self._iteration)
  44         # _iteration == 2 => Two different connections have been used.
  45         if self._iteration == 2:
  46             self._base_server.on_connection_lost(reason)
  47
  48     def on_send_done(self, stream_id):
  49         self._base_server.on_send_done_default(stream_id)
  50         logging.info('Sending GOAWAY for stream %d:' % stream_id)
  51         self._base_server._conn.close_connection(error_code=0,
  52                                                  additional_data=None,
  53                                                  last_stream_id=stream_id)
  54         self._base_server._stream_status[stream_id] = False
  55
  56     def on_request_received(self, event):
  57         self._ready_to_send = False
  58         self._base_server.on_request_received_default(event)
  59
  60     def on_data_received(self, event):
  61         self._base_server.on_data_received_default(event)
  62         sr = self._base_server.parse_received_data(event.stream_id)
  63         if sr:
  64             logging.info('Creating response size = %s' % sr.response_size)
  65             response_data = self._base_server.default_response_data(
  66                 sr.response_size)
  67             self._ready_to_send = True
  68             self._base_server.setup_send(response_data, event.stream_id)