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JDBC Driver for Google Cloud Spanner

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/*
 * Copyright 2014 The Netty Project
 *
 * The Netty Project 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.
 */

package nl.topicus.jdbc.shaded.io.netty.handler.ssl;

import nl.topicus.jdbc.shaded.io.netty.util.ReferenceCounted;
import nl.topicus.jdbc.shaded.io.netty.util.internal.UnstableApi;

/**
 * An enumeration of SSL/TLS protocol providers.
 */
public enum SslProvider {
    /**
     * JDK's default implementation.
     */
    JDK,
    /**
     * OpenSSL-based implementation.
     */
    OPENSSL,
    /**
     * OpenSSL-based implementation which does not have finalizers and instead implements {@link ReferenceCounted}.
     */
    @UnstableApi
    OPENSSL_REFCNT
}