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/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */
package com.facebook.presto.jdbc.internal.apache.http.ssl;

import java.net.Socket;
import java.util.Map;

/**
 * A strategy allowing for a choice of an alias during SSL authentication.
 *
 * @since 4.4
 */
public interface PrivateKeyStrategy {

    /**
     * Determines what key material to use for SSL authentication.
     *
     * @param aliases available private key material
     * @param socket socket used for the connection. Please note this parameter can be {@code null}
     * if key material is applicable to any socket.
     */
    String chooseAlias(Map aliases, Socket socket);

}