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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
15import logging
16import time
17
18import http2_base_server
19
20
21class 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)
69