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# 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 hyperframe.frame
import logging
import http2_base_server
class TestcaseSettingsMaxStreams(object):
"""
This test sets MAX_CONCURRENT_STREAMS to 1 and asserts that at any point
only 1 stream is active.
"""
def __init__(self):
self._base_server = http2_base_server.H2ProtocolBaseServer()
self._base_server._handlers['DataReceived'] = self.on_data_received
self._base_server._handlers['ConnectionMade'] = self.on_connection_made
def get_base_server(self):
return self._base_server
def on_connection_made(self):
logging.info('Connection Made')
self._base_server._conn.initiate_connection()
self._base_server._conn.update_settings(
{hyperframe.frame.SettingsFrame.MAX_CONCURRENT_STREAMS: 1})
self._base_server.transport.setTcpNoDelay(True)
self._base_server.transport.write(self._base_server._conn.data_to_send())
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 of size = %s' % sr.response_size)
response_data = self._base_server.default_response_data(sr.response_size)
self._base_server.setup_send(response_data, event.stream_id)
# TODO (makdharma): Add assertion to check number of live streams
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