| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657 | # Copyright 2016 gRPC authors.## Licensed under the Apache License, Version 2.0 (the "License");# you may not use this file except in compliance with the License.# You may obtain a copy of the License at##     http://www.apache.org/licenses/LICENSE-2.0## Unless required by applicable law or agreed to in writing, software# distributed under the License is distributed on an "AS IS" BASIS,# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.# See the License for the specific language governing permissions and# limitations under the License.import loggingimport http2_base_serverclass TestcasePing(object):    """    This test injects PING frames before and after header and data. Keeps count    of outstanding ping response and asserts when the count is non-zero at the    end of the test.  """    def __init__(self):        self._base_server = http2_base_server.H2ProtocolBaseServer()        self._base_server._handlers[            'RequestReceived'] = self.on_request_received        self._base_server._handlers['DataReceived'] = self.on_data_received        self._base_server._handlers['ConnectionLost'] = self.on_connection_lost    def get_base_server(self):        return self._base_server    def on_request_received(self, event):        self._base_server.default_ping()        self._base_server.on_request_received_default(event)        self._base_server.default_ping()    def on_data_received(self, event):        self._base_server.on_data_received_default(event)        sr = self._base_server.parse_received_data(event.stream_id)        if sr:            logging.info('Creating response size = %s' % sr.response_size)            response_data = self._base_server.default_response_data(                sr.response_size)            self._base_server.default_ping()            self._base_server.setup_send(response_data, event.stream_id)            self._base_server.default_ping()    def on_connection_lost(self, reason):        logging.info('Disconnect received. Ping Count %d' %                     self._base_server._outstanding_pings)        assert (self._base_server._outstanding_pings == 0)        self._base_server.on_connection_lost(reason)
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