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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  package io.netty.handler.ssl;
17  
18  /**
19   * OpenSSL version of {@link ApplicationProtocolNegotiator}.
20   */
21  public interface OpenSslApplicationProtocolNegotiator extends ApplicationProtocolNegotiator {
22      // The current need for this interface is primarily for consistency with the JDK provider
23      // How the OpenSsl provider will provide extensibility to control the application selection
24      // and notification algorithms is not yet known (JNI, pure java, tcnative hooks, etc...).
25      // OpenSSL itself is currently not in compliance with the specification for the 2 supported
26      // protocols (ALPN, NPN) with respect to allowing the handshakes to fail during the application
27      // protocol negotiation process.  Issue https://github.com/openssl/openssl/issues/188 has been created for this.
28  }