233 lines
7.5 KiB
Java
233 lines
7.5 KiB
Java
/*
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* Copyright 2015 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.epoll;
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import io.netty.buffer.ByteBufAllocator;
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import io.netty.channel.ChannelException;
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import io.netty.channel.ChannelOption;
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import io.netty.channel.MessageSizeEstimator;
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import io.netty.channel.RecvByteBufAllocator;
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import io.netty.channel.WriteBufferWaterMark;
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import io.netty.channel.socket.ServerSocketChannelConfig;
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import io.netty.util.NetUtil;
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import java.io.IOException;
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import java.util.Map;
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import static io.netty.channel.ChannelOption.SO_BACKLOG;
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import static io.netty.channel.ChannelOption.SO_RCVBUF;
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import static io.netty.channel.ChannelOption.SO_REUSEADDR;
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import static io.netty.util.internal.ObjectUtil.checkPositiveOrZero;
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public class EpollServerChannelConfig extends EpollChannelConfig implements ServerSocketChannelConfig {
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private volatile int backlog = NetUtil.SOMAXCONN;
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private volatile int pendingFastOpenRequestsThreshold;
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EpollServerChannelConfig(AbstractEpollChannel channel) {
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super(channel);
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}
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@Override
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public Map<ChannelOption<?>, Object> getOptions() {
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return getOptions(super.getOptions(), SO_RCVBUF, SO_REUSEADDR, SO_BACKLOG, EpollChannelOption.TCP_FASTOPEN);
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}
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@SuppressWarnings("unchecked")
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@Override
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public <T> T getOption(ChannelOption<T> option) {
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if (option == SO_RCVBUF) {
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return (T) Integer.valueOf(getReceiveBufferSize());
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}
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if (option == SO_REUSEADDR) {
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return (T) Boolean.valueOf(isReuseAddress());
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}
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if (option == SO_BACKLOG) {
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return (T) Integer.valueOf(getBacklog());
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}
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if (option == EpollChannelOption.TCP_FASTOPEN) {
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return (T) Integer.valueOf(getTcpFastopen());
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}
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return super.getOption(option);
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}
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@Override
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public <T> boolean setOption(ChannelOption<T> option, T value) {
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validate(option, value);
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if (option == SO_RCVBUF) {
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setReceiveBufferSize((Integer) value);
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} else if (option == SO_REUSEADDR) {
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setReuseAddress((Boolean) value);
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} else if (option == SO_BACKLOG) {
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setBacklog((Integer) value);
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} else if (option == EpollChannelOption.TCP_FASTOPEN) {
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setTcpFastopen((Integer) value);
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} else {
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return super.setOption(option, value);
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}
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return true;
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}
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@Override
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public boolean isReuseAddress() {
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try {
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return ((AbstractEpollChannel) channel).socket.isReuseAddress();
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} catch (IOException e) {
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throw new ChannelException(e);
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}
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}
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@Override
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public EpollServerChannelConfig setReuseAddress(boolean reuseAddress) {
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try {
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((AbstractEpollChannel) channel).socket.setReuseAddress(reuseAddress);
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return this;
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} catch (IOException e) {
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throw new ChannelException(e);
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}
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}
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@Override
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public int getReceiveBufferSize() {
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try {
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return ((AbstractEpollChannel) channel).socket.getReceiveBufferSize();
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} catch (IOException e) {
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throw new ChannelException(e);
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}
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}
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@Override
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public EpollServerChannelConfig setReceiveBufferSize(int receiveBufferSize) {
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try {
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((AbstractEpollChannel) channel).socket.setReceiveBufferSize(receiveBufferSize);
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return this;
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} catch (IOException e) {
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throw new ChannelException(e);
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}
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}
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@Override
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public int getBacklog() {
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return backlog;
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}
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@Override
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public EpollServerChannelConfig setBacklog(int backlog) {
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checkPositiveOrZero(backlog, "backlog");
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this.backlog = backlog;
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return this;
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}
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/**
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* Returns threshold value of number of pending for fast open connect.
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*
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* @see <a href="https://tools.ietf.org/html/rfc7413#appendix-A.2">RFC 7413 Passive Open</a>
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*/
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public int getTcpFastopen() {
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return pendingFastOpenRequestsThreshold;
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}
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/**
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* Enables tcpFastOpen on the server channel. If the underlying os doesnt support TCP_FASTOPEN setting this has no
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* effect. This has to be set before doing listen on the socket otherwise this takes no effect.
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*
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* @param pendingFastOpenRequestsThreshold number of requests to be pending for fastopen at a given point in time
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* for security. @see <a href="https://tools.ietf.org/html/rfc7413#appendix-A.2">RFC 7413 Passive Open</a>
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*
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* @see <a href="https://tools.ietf.org/html/rfc7413">RFC 7413 TCP FastOpen</a>
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*/
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public EpollServerChannelConfig setTcpFastopen(int pendingFastOpenRequestsThreshold) {
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checkPositiveOrZero(this.pendingFastOpenRequestsThreshold, "pendingFastOpenRequestsThreshold");
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this.pendingFastOpenRequestsThreshold = pendingFastOpenRequestsThreshold;
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return this;
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}
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@Override
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public EpollServerChannelConfig setPerformancePreferences(int connectionTime, int latency, int bandwidth) {
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return this;
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}
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@Override
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public EpollServerChannelConfig setConnectTimeoutMillis(int connectTimeoutMillis) {
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super.setConnectTimeoutMillis(connectTimeoutMillis);
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return this;
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}
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@Override
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@Deprecated
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public EpollServerChannelConfig setMaxMessagesPerRead(int maxMessagesPerRead) {
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super.setMaxMessagesPerRead(maxMessagesPerRead);
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return this;
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}
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@Override
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public EpollServerChannelConfig setWriteSpinCount(int writeSpinCount) {
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super.setWriteSpinCount(writeSpinCount);
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return this;
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}
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@Override
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public EpollServerChannelConfig setAllocator(ByteBufAllocator allocator) {
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super.setAllocator(allocator);
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return this;
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}
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@Override
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public EpollServerChannelConfig setRecvByteBufAllocator(RecvByteBufAllocator allocator) {
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super.setRecvByteBufAllocator(allocator);
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return this;
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}
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@Override
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public EpollServerChannelConfig setAutoRead(boolean autoRead) {
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super.setAutoRead(autoRead);
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return this;
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}
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@Override
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@Deprecated
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public EpollServerChannelConfig setWriteBufferHighWaterMark(int writeBufferHighWaterMark) {
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super.setWriteBufferHighWaterMark(writeBufferHighWaterMark);
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return this;
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}
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@Override
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@Deprecated
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public EpollServerChannelConfig setWriteBufferLowWaterMark(int writeBufferLowWaterMark) {
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super.setWriteBufferLowWaterMark(writeBufferLowWaterMark);
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return this;
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}
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@Override
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public EpollServerChannelConfig setWriteBufferWaterMark(WriteBufferWaterMark writeBufferWaterMark) {
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super.setWriteBufferWaterMark(writeBufferWaterMark);
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return this;
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}
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@Override
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public EpollServerChannelConfig setMessageSizeEstimator(MessageSizeEstimator estimator) {
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super.setMessageSizeEstimator(estimator);
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return this;
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}
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@Override
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public EpollServerChannelConfig setEpollMode(EpollMode mode) {
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super.setEpollMode(mode);
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return this;
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}
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}
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