org.jboss.netty.channel.ChannelStateEvent Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of netty Show documentation

The Netty project is an effort to provide an asynchronous event-driven network application framework and tools for rapid development of maintainable high performance and high scalability protocol servers and clients. In other words, Netty is a NIO client server framework which enables quick and easy development of network applications such as protocol servers and clients. It greatly simplifies and streamlines network programming such as TCP and UDP socket server.

There is a newer version: 4.0.0.Alpha8

Show newest version

/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you 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 org.jboss.netty.channel;


/**
 * A {@link ChannelEvent} which represents the change of the {@link Channel}
 * state.  It can mean the notification of a change or the request for a
 * change, depending on whether it is an upstream event or a downstream event
 * respectively.  Please refer to the {@link ChannelEvent} documentation to
 * find out what an upstream event and a downstream event are and what
 * fundamental differences they have.
 *
 * @apiviz.has org.jboss.netty.channel.ChannelState
 */
public interface ChannelStateEvent extends ChannelEvent {

    /**
     * Returns the changed property of the {@link Channel}.
     */
    ChannelState getState();

    /**
     * Returns the value of the changed property of the {@link Channel}.
     * Please refer to {@link ChannelState} documentation to find out the
     * allowed values for each property.
     */
    Object getValue();
}