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# Copyright 2018 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.
"""gRPC's APIs for TLS Session Resumption support"""
from grpc._cython import cygrpc as _cygrpc
def ssl_session_cache_lru(capacity):
"""Creates an SSLSessionCache with LRU replacement policy
Args:
capacity: Size of the cache
Returns:
An SSLSessionCache with LRU replacement policy that can be passed as a value for
the grpc.ssl_session_cache option to a grpc.Channel. SSL session caches are used
to store session tickets, which clients can present to resume previous TLS sessions
with a server.
"""
return SSLSessionCache(_cygrpc.SSLSessionCacheLRU(capacity))
class SSLSessionCache(object):
"""An encapsulation of a session cache used for TLS session resumption.
Instances of this class can be passed to a Channel as values for the
grpc.ssl_session_cache option
"""
def __init__(self, cache):
self._cache = cache
def __int__(self):
return int(self._cache)
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