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1   /*
2    * Copyright 2017 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    *   https://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  import io.netty.util.internal.UnstableApi;
19  
20  /**
21   * Event that is fired once we did a selection of a {@link SslContext} based on the {@code SNI hostname},
22   * which may be because it was successful or there was an error.
23   */
24  @UnstableApi
25  public final class SniCompletionEvent extends SslCompletionEvent {
26      private final String hostname;
27  
28      public SniCompletionEvent(String hostname) {
29          this.hostname = hostname;
30      }
31  
32      public SniCompletionEvent(String hostname, Throwable cause) {
33          super(cause);
34          this.hostname = hostname;
35      }
36  
37      public SniCompletionEvent(Throwable cause) {
38          this(null, cause);
39      }
40  
41      /**
42       * Returns the SNI hostname send by the client if we were able to parse it, {@code null} otherwise.
43       */
44      public String hostname() {
45          return hostname;
46      }
47  
48      @Override
49      public String toString() {
50          final Throwable cause = cause();
51          return cause == null ? getClass().getSimpleName() + "(SUCCESS='"  + hostname + "'\")":
52                  getClass().getSimpleName() +  '(' + cause + ')';
53      }
54  }