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A simple WebSocket Java client based on JSR 356

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/**
 * Copyright Matthias Weßendorf.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.wessendorf.websocket;

import java.nio.ByteBuffer;

/**
 * Simple interface to be implemented in order to react on the given WebSocket events
 */
public interface WebSocketHandler {

    /**
     * Invoked once the connection to the remote URL has been established.
     */
    void onOpen();

    /**
     * Invoked after the connection was closed.
     *
     * @param closeCode the RFC 6455 status code
     * @param reason a string description for the reason of the close
     */
    void onClose(int closeCode, String reason);

    /**
     * Invoked after an error.
     *
     * @param throwable the cause
     */
    void onError(Throwable throwable);

    /**
     * Invoked on arrival of a text message.
     *
     * @param message the text message.
     */
    void onMessage(String message);

    /**
     * Invoked on arrival of a binary message.
     *
     * @param message the binary message.
     */
    void onMessage(ByteBuffer message);
}