c784271620
Motivation: JCTools supports both non-unsafe, unsafe versions of queues and JDK6 which allows us to shade the library in netty-common allowing it to stay "zero dependency". Modifications: - Remove copy paste JCTools code and shade the library (dependencies that are shaded should be removed from the <dependencies> section of the generated POM). - Remove usage of OneTimeTask and remove it all together. Result: Less code to maintain and easier to update JCTools and less GC pressure as the queue implementation nt creates so much garbage
240 lines
7.2 KiB
Java
240 lines
7.2 KiB
Java
/*
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* Copyright 2011 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.channel.sctp.nio;
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import com.sun.nio.sctp.SctpChannel;
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import com.sun.nio.sctp.SctpServerChannel;
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import io.netty.channel.ChannelException;
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import io.netty.channel.ChannelFuture;
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import io.netty.channel.ChannelMetadata;
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import io.netty.channel.ChannelOutboundBuffer;
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import io.netty.channel.ChannelPromise;
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import io.netty.channel.nio.AbstractNioMessageChannel;
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import io.netty.channel.sctp.DefaultSctpServerChannelConfig;
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import io.netty.channel.sctp.SctpServerChannelConfig;
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import java.io.IOException;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.SocketAddress;
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import java.nio.channels.SelectionKey;
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import java.util.Collections;
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import java.util.Iterator;
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import java.util.LinkedHashSet;
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import java.util.List;
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import java.util.Set;
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/**
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* {@link io.netty.channel.sctp.SctpServerChannel} implementation which use non-blocking mode to accept new
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* connections and create the {@link NioSctpChannel} for them.
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*
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* Be aware that not all operations systems support SCTP. Please refer to the documentation of your operation system,
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* to understand what you need to do to use it. Also this feature is only supported on Java 7+.
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*/
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public class NioSctpServerChannel extends AbstractNioMessageChannel
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implements io.netty.channel.sctp.SctpServerChannel {
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private static final ChannelMetadata METADATA = new ChannelMetadata(false);
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private static SctpServerChannel newSocket() {
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try {
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return SctpServerChannel.open();
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} catch (IOException e) {
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throw new ChannelException(
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"Failed to open a server socket.", e);
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}
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}
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private final SctpServerChannelConfig config;
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/**
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* Create a new instance
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*/
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public NioSctpServerChannel() {
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super(null, newSocket(), SelectionKey.OP_ACCEPT);
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config = new NioSctpServerChannelConfig(this, javaChannel());
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}
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@Override
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public ChannelMetadata metadata() {
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return METADATA;
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}
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@Override
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public Set<InetSocketAddress> allLocalAddresses() {
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try {
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final Set<SocketAddress> allLocalAddresses = javaChannel().getAllLocalAddresses();
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final Set<InetSocketAddress> addresses = new LinkedHashSet<InetSocketAddress>(allLocalAddresses.size());
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for (SocketAddress socketAddress : allLocalAddresses) {
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addresses.add((InetSocketAddress) socketAddress);
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}
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return addresses;
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} catch (Throwable ignored) {
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return Collections.emptySet();
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}
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}
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@Override
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public SctpServerChannelConfig config() {
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return config;
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}
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@Override
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public boolean isActive() {
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return isOpen() && !allLocalAddresses().isEmpty();
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}
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@Override
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public InetSocketAddress remoteAddress() {
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return null;
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}
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@Override
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public InetSocketAddress localAddress() {
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return (InetSocketAddress) super.localAddress();
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}
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@Override
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protected SctpServerChannel javaChannel() {
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return (SctpServerChannel) super.javaChannel();
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}
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@Override
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protected SocketAddress localAddress0() {
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try {
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Iterator<SocketAddress> i = javaChannel().getAllLocalAddresses().iterator();
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if (i.hasNext()) {
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return i.next();
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}
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} catch (IOException e) {
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// ignore
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}
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return null;
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}
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@Override
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protected void doBind(SocketAddress localAddress) throws Exception {
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javaChannel().bind(localAddress, config.getBacklog());
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}
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@Override
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protected void doClose() throws Exception {
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javaChannel().close();
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}
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@Override
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protected int doReadMessages(List<Object> buf) throws Exception {
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SctpChannel ch = javaChannel().accept();
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if (ch == null) {
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return 0;
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}
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buf.add(new NioSctpChannel(this, ch));
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return 1;
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}
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@Override
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public ChannelFuture bindAddress(InetAddress localAddress) {
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return bindAddress(localAddress, newPromise());
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}
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@Override
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public ChannelFuture bindAddress(final InetAddress localAddress, final ChannelPromise promise) {
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if (eventLoop().inEventLoop()) {
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try {
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javaChannel().bindAddress(localAddress);
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promise.setSuccess();
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} catch (Throwable t) {
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promise.setFailure(t);
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}
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} else {
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eventLoop().execute(new Runnable() {
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@Override
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public void run() {
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bindAddress(localAddress, promise);
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}
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});
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}
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return promise;
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}
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@Override
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public ChannelFuture unbindAddress(InetAddress localAddress) {
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return unbindAddress(localAddress, newPromise());
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}
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@Override
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public ChannelFuture unbindAddress(final InetAddress localAddress, final ChannelPromise promise) {
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if (eventLoop().inEventLoop()) {
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try {
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javaChannel().unbindAddress(localAddress);
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promise.setSuccess();
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} catch (Throwable t) {
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promise.setFailure(t);
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}
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} else {
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eventLoop().execute(new Runnable() {
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@Override
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public void run() {
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unbindAddress(localAddress, promise);
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}
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});
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}
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return promise;
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}
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// Unnecessary stuff
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@Override
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protected boolean doConnect(
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SocketAddress remoteAddress, SocketAddress localAddress) throws Exception {
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throw new UnsupportedOperationException();
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}
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@Override
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protected void doFinishConnect() throws Exception {
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throw new UnsupportedOperationException();
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}
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@Override
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protected SocketAddress remoteAddress0() {
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return null;
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}
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@Override
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protected void doDisconnect() throws Exception {
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throw new UnsupportedOperationException();
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}
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@Override
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protected boolean doWriteMessage(Object msg, ChannelOutboundBuffer in) throws Exception {
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throw new UnsupportedOperationException();
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}
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@Override
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protected Object filterOutboundMessage(Object msg) throws Exception {
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throw new UnsupportedOperationException();
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}
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private final class NioSctpServerChannelConfig extends DefaultSctpServerChannelConfig {
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private NioSctpServerChannelConfig(NioSctpServerChannel channel, SctpServerChannel javaChannel) {
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super(channel, javaChannel);
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}
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@Override
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protected void autoReadCleared() {
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setReadPending(false);
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}
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}
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}
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