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Async Http Client library purpose is to allow Java applications to easily execute HTTP requests and asynchronously process the HTTP responses.

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/*
 * Copyright (c) 2010-2012 Sonatype, Inc. All rights reserved.
 *
 * This program is licensed to you under the Apache License Version 2.0,
 * and you may not use this file except in compliance with the Apache License Version 2.0.
 * You may obtain a copy of the Apache License Version 2.0 at http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the Apache License Version 2.0 is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under.
 */
package com.ning.http.client;

/**
 * Invoked when an {@link AsyncHandler.STATE#UPGRADE} is returned. Currently the library only support {@link com.ning.http.client.ws.WebSocket}
 * as type.
 *
 * @param 
 */
public interface UpgradeHandler {

    /**
     * If the HTTP Upgrade succeed (response's status code equals 101), the {@link AsyncHttpProvider} will invoke that
     * method
     *
     * @param t an Upgradable entity
     */
    void onSuccess(T t);

    /**
     * If the upgrade fail.
     * @param t a {@link Throwable}
     */
    void onFailure(Throwable t);
}