xref: /aosp_15_r20/external/grpc-grpc/test/http2_test/test_ping.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
16
17import http2_base_server
18
19
20class TestcasePing(object):
21    """
22    This test injects PING frames before and after header and data. Keeps count
23    of outstanding ping response and asserts when the count is non-zero at the
24    end of the test.
25    """
26
27    def __init__(self):
28        self._base_server = http2_base_server.H2ProtocolBaseServer()
29        self._base_server._handlers[
30            "RequestReceived"
31        ] = self.on_request_received
32        self._base_server._handlers["DataReceived"] = self.on_data_received
33        self._base_server._handlers["ConnectionLost"] = self.on_connection_lost
34
35    def get_base_server(self):
36        return self._base_server
37
38    def on_request_received(self, event):
39        self._base_server.default_ping()
40        self._base_server.on_request_received_default(event)
41        self._base_server.default_ping()
42
43    def on_data_received(self, event):
44        self._base_server.on_data_received_default(event)
45        sr = self._base_server.parse_received_data(event.stream_id)
46        if sr:
47            logging.info("Creating response size = %s" % sr.response_size)
48            response_data = self._base_server.default_response_data(
49                sr.response_size
50            )
51            self._base_server.default_ping()
52            self._base_server.setup_send(response_data, event.stream_id)
53            self._base_server.default_ping()
54
55    def on_connection_lost(self, reason):
56        logging.info(
57            "Disconnect received. Ping Count %d"
58            % self._base_server._outstanding_pings
59        )
60        assert self._base_server._outstanding_pings == 0
61        self._base_server.on_connection_lost(reason)
62