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1   /*
2    * Copyright 2014 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  
17  package io.netty.handler.ssl;
18  
19  import io.netty.util.ReferenceCounted;
20  import io.netty.util.internal.UnstableApi;
21  
22  /**
23   * An enumeration of SSL/TLS protocol providers.
24   */
25  public enum SslProvider {
26      /**
27       * JDK's default implementation.
28       */
29      JDK,
30      /**
31       * OpenSSL-based implementation.
32       */
33      OPENSSL,
34      /**
35       * OpenSSL-based implementation which does not have finalizers and instead implements {@link ReferenceCounted}.
36       */
37      @UnstableApi
38      OPENSSL_REFCNT
39  }