/*
 * Copyright 2011 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.sctp;

import com.sun.nio.sctp.SctpChannel;
import com.sun.nio.sctp.SctpStandardSocketOptions;
import io.netty.buffer.ByteBufAllocator;
import io.netty.channel.ChannelException;
import io.netty.channel.ChannelOption;
import io.netty.channel.DefaultChannelConfig;
import io.netty.channel.MessageSizeEstimator;
import io.netty.channel.RecvByteBufAllocator;
import io.netty.channel.WriteBufferWaterMark;
import io.netty.util.internal.PlatformDependent;

import java.io.IOException;
import java.util.Map;

import static io.netty.channel.ChannelOption.SO_RCVBUF;
import static io.netty.channel.ChannelOption.SO_SNDBUF;
import static io.netty.channel.sctp.SctpChannelOption.SCTP_INIT_MAXSTREAMS;
import static io.netty.channel.sctp.SctpChannelOption.SCTP_NODELAY;

The default SctpChannelConfig implementation for SCTP.
/** * The default {@link SctpChannelConfig} implementation for SCTP. */
public class DefaultSctpChannelConfig extends DefaultChannelConfig implements SctpChannelConfig { private final SctpChannel javaChannel; public DefaultSctpChannelConfig(io.netty.channel.sctp.SctpChannel channel, SctpChannel javaChannel) { super(channel); if (javaChannel == null) { throw new NullPointerException("javaChannel"); } this.javaChannel = javaChannel; // Enable TCP_NODELAY by default if possible. if (PlatformDependent.canEnableTcpNoDelayByDefault()) { try { setSctpNoDelay(true); } catch (Exception e) { // Ignore. } } } @Override public Map<ChannelOption<?>, Object> getOptions() { return getOptions( super.getOptions(), SO_RCVBUF, SO_SNDBUF, SCTP_NODELAY, SCTP_INIT_MAXSTREAMS); } @SuppressWarnings("unchecked") @Override public <T> T getOption(ChannelOption<T> option) { if (option == SO_RCVBUF) { return (T) Integer.valueOf(getReceiveBufferSize()); } if (option == SO_SNDBUF) { return (T) Integer.valueOf(getSendBufferSize()); } if (option == SCTP_NODELAY) { return (T) Boolean.valueOf(isSctpNoDelay()); } if (option == SCTP_INIT_MAXSTREAMS) { return (T) getInitMaxStreams(); } return super.getOption(option); } @Override public <T> boolean setOption(ChannelOption<T> option, T value) { validate(option, value); if (option == SO_RCVBUF) { setReceiveBufferSize((Integer) value); } else if (option == SO_SNDBUF) { setSendBufferSize((Integer) value); } else if (option == SCTP_NODELAY) { setSctpNoDelay((Boolean) value); } else if (option == SCTP_INIT_MAXSTREAMS) { setInitMaxStreams((SctpStandardSocketOptions.InitMaxStreams) value); } else { return super.setOption(option, value); } return true; } @Override public boolean isSctpNoDelay() { try { return javaChannel.getOption(SctpStandardSocketOptions.SCTP_NODELAY); } catch (IOException e) { throw new ChannelException(e); } } @Override public SctpChannelConfig setSctpNoDelay(boolean sctpNoDelay) { try { javaChannel.setOption(SctpStandardSocketOptions.SCTP_NODELAY, sctpNoDelay); } catch (IOException e) { throw new ChannelException(e); } return this; } @Override public int getSendBufferSize() { try { return javaChannel.getOption(SctpStandardSocketOptions.SO_SNDBUF); } catch (IOException e) { throw new ChannelException(e); } } @Override public SctpChannelConfig setSendBufferSize(int sendBufferSize) { try { javaChannel.setOption(SctpStandardSocketOptions.SO_SNDBUF, sendBufferSize); } catch (IOException e) { throw new ChannelException(e); } return this; } @Override public int getReceiveBufferSize() { try { return javaChannel.getOption(SctpStandardSocketOptions.SO_RCVBUF); } catch (IOException e) { throw new ChannelException(e); } } @Override public SctpChannelConfig setReceiveBufferSize(int receiveBufferSize) { try { javaChannel.setOption(SctpStandardSocketOptions.SO_RCVBUF, receiveBufferSize); } catch (IOException e) { throw new ChannelException(e); } return this; } @Override public SctpStandardSocketOptions.InitMaxStreams getInitMaxStreams() { try { return javaChannel.getOption(SctpStandardSocketOptions.SCTP_INIT_MAXSTREAMS); } catch (IOException e) { throw new ChannelException(e); } } @Override public SctpChannelConfig setInitMaxStreams(SctpStandardSocketOptions.InitMaxStreams initMaxStreams) { try { javaChannel.setOption(SctpStandardSocketOptions.SCTP_INIT_MAXSTREAMS, initMaxStreams); } catch (IOException e) { throw new ChannelException(e); } return this; } @Override public SctpChannelConfig setConnectTimeoutMillis(int connectTimeoutMillis) { super.setConnectTimeoutMillis(connectTimeoutMillis); return this; } @Override @Deprecated public SctpChannelConfig setMaxMessagesPerRead(int maxMessagesPerRead) { super.setMaxMessagesPerRead(maxMessagesPerRead); return this; } @Override public SctpChannelConfig setWriteSpinCount(int writeSpinCount) { super.setWriteSpinCount(writeSpinCount); return this; } @Override public SctpChannelConfig setAllocator(ByteBufAllocator allocator) { super.setAllocator(allocator); return this; } @Override public SctpChannelConfig setRecvByteBufAllocator(RecvByteBufAllocator allocator) { super.setRecvByteBufAllocator(allocator); return this; } @Override public SctpChannelConfig setAutoRead(boolean autoRead) { super.setAutoRead(autoRead); return this; } @Override public SctpChannelConfig setAutoClose(boolean autoClose) { super.setAutoClose(autoClose); return this; } @Override public SctpChannelConfig setWriteBufferHighWaterMark(int writeBufferHighWaterMark) { super.setWriteBufferHighWaterMark(writeBufferHighWaterMark); return this; } @Override public SctpChannelConfig setWriteBufferLowWaterMark(int writeBufferLowWaterMark) { super.setWriteBufferLowWaterMark(writeBufferLowWaterMark); return this; } @Override public SctpChannelConfig setWriteBufferWaterMark(WriteBufferWaterMark writeBufferWaterMark) { super.setWriteBufferWaterMark(writeBufferWaterMark); return this; } @Override public SctpChannelConfig setMessageSizeEstimator(MessageSizeEstimator estimator) { super.setMessageSizeEstimator(estimator); return this; } }