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The AWS SDK for Java - Core module holds the classes that are used by the individual service clients to interact with Amazon Web Services. Users need to depend on aws-java-sdk artifact for accessing individual client classes.

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/*
 * Copyright 2014-2024 Amazon Technologies, Inc.
 *
 * 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://aws.amazon.com/apache2.0
 *
 * This file 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.
 */
package com.amazonaws.http.conn.ssl;

/**
 * TLS protocols arranged in descending order of security preference in terms of
 * their ordinal numbers. See JSSE Standard Names.
 */
enum TLSProtocol {
    TLSv1_2("TLSv1.2"), // most secure/preferred
    TLSv1_1("TLSv1.1"),
    TLSv1("TLSv1"),
    TLS("TLS"),         // least secure/preferred, but acceptable
    ;
    private final String protocolName;

    private TLSProtocol(String protocolName) {
        this.protocolName = protocolName;
    }

    /**
     * Returns the corresponding TLS protocol name as per the JSSE Standard Names
     */
    String getProtocolName() {
        return protocolName;
    }
}