io.netty.channel.AbstractServerChannel 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:
*
* 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 io.netty.channel;
import java.net.SocketAddress;
/**
* A skeletal server-side {@link Channel} implementation. A server-side
* {@link Channel} does not allow the following operations:
*
* - {@link #connect(SocketAddress, ChannelPromise)}
* - {@link #disconnect(ChannelPromise)}
* - {@link #write(Object, ChannelPromise)}
* - {@link #flush()}
* - and the shortcut methods which calls the methods mentioned above
*
*/
public abstract class AbstractServerChannel extends AbstractChannel implements ServerChannel {
private static final ChannelMetadata METADATA = new ChannelMetadata(false);
/**
* Creates a new instance.
*/
protected AbstractServerChannel() {
super(null);
}
@Override
public ChannelMetadata metadata() {
return METADATA;
}
@Override
public SocketAddress remoteAddress() {
return null;
}
@Override
protected SocketAddress remoteAddress0() {
return null;
}
@Override
protected void doDisconnect() throws Exception {
throw new UnsupportedOperationException();
}
@Override
protected AbstractUnsafe newUnsafe() {
return new DefaultServerUnsafe();
}
@Override
protected void doWrite(ChannelOutboundBuffer in) throws Exception {
throw new UnsupportedOperationException();
}
@Override
protected final Object filterOutboundMessage(Object msg) {
throw new UnsupportedOperationException();
}
private final class DefaultServerUnsafe extends AbstractUnsafe {
@Override
public void connect(SocketAddress remoteAddress, SocketAddress localAddress, ChannelPromise promise) {
safeSetFailure(promise, new UnsupportedOperationException());
}
}
}