xref: /aosp_15_r20/external/grpc-grpc/test/http2_test/test_goaway.py (revision cc02d7e222339f7a4f6ba5f422e6413f4bd931f2) 
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"
33        ] = self.on_request_received
34        self._base_server._handlers["DataReceived"] = self.on_data_received
35        self._base_server._handlers["SendDone"] = self.on_send_done
36        self._base_server._handlers["ConnectionLost"] = self.on_connection_lost
37        self._ready_to_send = False
38        self._iteration = iteration
39
40    def get_base_server(self):
41        return self._base_server
42
43    def on_connection_lost(self, reason):
44        logging.info("Disconnect received. Count %d" % self._iteration)
45        # _iteration == 2 => Two different connections have been used.
46        if self._iteration == 2:
47            self._base_server.on_connection_lost(reason)
48
49    def on_send_done(self, stream_id):
50        self._base_server.on_send_done_default(stream_id)
51        logging.info("Sending GOAWAY for stream %d:" % stream_id)
52        self._base_server._conn.close_connection(
53            error_code=0, additional_data=None, last_stream_id=stream_id
54        )
55        self._base_server._stream_status[stream_id] = False
56
57    def on_request_received(self, event):
58        self._ready_to_send = False
59        self._base_server.on_request_received_default(event)
60
61    def on_data_received(self, event):
62        self._base_server.on_data_received_default(event)
63        sr = self._base_server.parse_received_data(event.stream_id)
64        if sr:
65            logging.info("Creating response size = %s" % sr.response_size)
66            response_data = self._base_server.default_response_data(
67                sr.response_size
68            )
69            self._ready_to_send = True
70            self._base_server.setup_send(response_data, event.stream_id)
71