36 lines
1.2 KiB
Java
36 lines
1.2 KiB
Java
/**
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*
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* Copyright 2019 Paul Schaub
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.omemo.util;
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import org.jivesoftware.smackx.omemo.internal.OmemoDevice;
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/**
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* This interface can be extended in order to implement different strategies to determine the staleness of an
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* {@link OmemoDevice}. Stale devices SHOULD no longer be included in the list of recipients during message encryption.
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*/
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public interface StalenessStrategy {
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/**
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* Return true if the device is considered stale, false otherwise.
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*
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* @param userDevice our device
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* @param contactsDevice device of a contact
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* @return stale or not
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*/
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boolean isStale(OmemoDevice userDevice, OmemoDevice contactsDevice);
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}
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