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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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package java.net.http;

import java.io.IOException;

Thrown when the opening handshake has failed.
Since:
11/**
 * Thrown when the opening handshake has failed.
 *
 * @since 11
 */
public final class WebSocketHandshakeException extends IOException {

    private static final long serialVersionUID = 1L;

    private final transient HttpResponse<?> response;

    
Constructs a WebSocketHandshakeException with the given HttpResponse. 
Params:
response –  the HttpResponse that resulted in the handshake failure/**
     * Constructs a {@code WebSocketHandshakeException} with the given
     * {@code HttpResponse}.
     *
     * @param response
     *        the {@code HttpResponse} that resulted in the handshake failure
     */
    public WebSocketHandshakeException(HttpResponse<?> response) {
        this.response = response;
    }

    
Returns the server's counterpart of the opening handshake.
 The value may be unavailable (null) if this exception has been serialized and then deserialized. 
API Note:
The primary purpose of this method is to allow programmatic
examination of the reasons behind the failure of the opening handshake.
Some of these reasons might allow recovery.
Returns:
server response/**
     * Returns the server's counterpart of the opening handshake.
     *
     * <p> The value may be unavailable ({@code null}) if this exception has
     * been serialized and then deserialized.
     *
     * @apiNote The primary purpose of this method is to allow programmatic
     * examination of the reasons behind the failure of the opening handshake.
     * Some of these reasons might allow recovery.
     *
     * @return server response
     */
    public HttpResponse<?> getResponse() {
        return response;
    }

    @Override
    public WebSocketHandshakeException initCause(Throwable cause) {
        return (WebSocketHandshakeException) super.initCause(cause);
    }
}