1 /*
   2  * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.incubator.http;
  27 
  28 import java.io.IOException;
  29 
  30 /**
  31  * An exception used to signal the opening handshake failed.
  32  * {@Incubating}
  33  *
  34  * @since 9
  35  */
  36 public final class WebSocketHandshakeException extends IOException {
  37 
  38     private static final long serialVersionUID = 1L;
  39 
  40     private final transient HttpResponse<?> response;
  41 
  42     public WebSocketHandshakeException(HttpResponse<?> response) {
  43         this.response = response;
  44     }
  45 
  46     /**
  47      * Returns the server's counterpart of the opening handshake.
  48      *
  49      * <p> The value may be unavailable ({@code null}) if this exception has
  50      * been serialized and then read back in.
  51      *
  52      * @return server response
  53      */
  54     public HttpResponse<?> getResponse() {
  55         return response;
  56     }
  57 
  58     @Override
  59     public WebSocketHandshakeException initCause(Throwable cause) {
  60         return (WebSocketHandshakeException) super.initCause(cause);
  61     }
  62 }