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1   /*
2    * Copyright 2020 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.codec.quic;
17  
18  import org.jetbrains.annotations.Nullable;
19  
20  /**
21   * Exception produced while processing {@code QUIC}.
22   */
23  public final class QuicException extends Exception {
24  
25      private final QuicTransportError error;
26  
27      QuicException(String message) {
28          super(message);
29          this.error = null;
30      }
31  
32      public QuicException(QuicTransportError error) {
33          super(error.name());
34          this.error = error;
35      }
36  
37      public QuicException(String message, QuicTransportError error) {
38          super(message);
39          this.error = error;
40      }
41  
42      public QuicException(Throwable cause, QuicTransportError error) {
43          super(cause);
44          this.error = error;
45      }
46  
47      public QuicException(String message, Throwable cause, QuicTransportError error) {
48          super(message, cause);
49          this.error = error;
50      }
51  
52      /**
53       * Returns the {@link QuicTransportError} which was the cause of the {@link QuicException}.
54       *
55       * @return  the {@link QuicTransportError} that caused this {@link QuicException} or {@code null} if
56       *          it was caused by something different.
57       */
58      @Nullable
59      public QuicTransportError error() {
60          return error;
61      }
62  }