io.netty.channel.ChannelDuplexHandler Maven / Gradle / Ivy
/*
* 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:
*
* https://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 io.netty.channel;
import io.netty.channel.ChannelHandlerMask.Skip;
import java.net.SocketAddress;
/**
* {@link ChannelHandler} implementation which represents a combination out of a {@link ChannelInboundHandler} and
* the {@link ChannelOutboundHandler}.
*
* It is a good starting point if your {@link ChannelHandler} implementation needs to intercept operations and also
* state updates.
*/
public class ChannelDuplexHandler extends ChannelInboundHandlerAdapter implements ChannelOutboundHandler {
/**
* Calls {@link ChannelHandlerContext#bind(SocketAddress, ChannelPromise)} to forward
* to the next {@link ChannelOutboundHandler} in the {@link ChannelPipeline}.
*
* Sub-classes may override this method to change behavior.
*/
@Skip
@Override
public void bind(ChannelHandlerContext ctx, SocketAddress localAddress,
ChannelPromise promise) throws Exception {
ctx.bind(localAddress, promise);
}
/**
* Calls {@link ChannelHandlerContext#connect(SocketAddress, SocketAddress, ChannelPromise)} to forward
* to the next {@link ChannelOutboundHandler} in the {@link ChannelPipeline}.
*
* Sub-classes may override this method to change behavior.
*/
@Skip
@Override
public void connect(ChannelHandlerContext ctx, SocketAddress remoteAddress,
SocketAddress localAddress, ChannelPromise promise) throws Exception {
ctx.connect(remoteAddress, localAddress, promise);
}
/**
* Calls {@link ChannelHandlerContext#disconnect(ChannelPromise)} to forward
* to the next {@link ChannelOutboundHandler} in the {@link ChannelPipeline}.
*
* Sub-classes may override this method to change behavior.
*/
@Skip
@Override
public void disconnect(ChannelHandlerContext ctx, ChannelPromise promise)
throws Exception {
ctx.disconnect(promise);
}
/**
* Calls {@link ChannelHandlerContext#close(ChannelPromise)} to forward
* to the next {@link ChannelOutboundHandler} in the {@link ChannelPipeline}.
*
* Sub-classes may override this method to change behavior.
*/
@Skip
@Override
public void close(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
ctx.close(promise);
}
/**
* Calls {@link ChannelHandlerContext#deregister(ChannelPromise)} to forward
* to the next {@link ChannelOutboundHandler} in the {@link ChannelPipeline}.
*
* Sub-classes may override this method to change behavior.
*/
@Skip
@Override
public void deregister(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
ctx.deregister(promise);
}
/**
* Calls {@link ChannelHandlerContext#read()} to forward
* to the next {@link ChannelOutboundHandler} in the {@link ChannelPipeline}.
*
* Sub-classes may override this method to change behavior.
*/
@Skip
@Override
public void read(ChannelHandlerContext ctx) throws Exception {
ctx.read();
}
/**
* Calls {@link ChannelHandlerContext#write(Object, ChannelPromise)} to forward
* to the next {@link ChannelOutboundHandler} in the {@link ChannelPipeline}.
*
* Sub-classes may override this method to change behavior.
*/
@Skip
@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
ctx.write(msg, promise);
}
/**
* Calls {@link ChannelHandlerContext#flush()} to forward
* to the next {@link ChannelOutboundHandler} in the {@link ChannelPipeline}.
*
* Sub-classes may override this method to change behavior.
*/
@Skip
@Override
public void flush(ChannelHandlerContext ctx) throws Exception {
ctx.flush();
}
}