/*
* 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.socket;
import io.netty.buffer.ByteBufAllocator;
import io.netty.channel.ChannelException;
import io.netty.channel.ChannelOption;
import io.netty.channel.DefaultChannelConfig;
import io.netty.channel.FixedRecvByteBufAllocator;
import io.netty.channel.MessageSizeEstimator;
import io.netty.channel.RecvByteBufAllocator;
import io.netty.util.internal.PlatformDependent;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;
import java.io.IOException;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.MulticastSocket;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Map;
import static io.netty.channel.ChannelOption.*;
/**
* The default {@link DatagramChannelConfig} implementation.
*/
public class DefaultDatagramChannelConfig extends DefaultChannelConfig implements DatagramChannelConfig {
private static final InternalLogger logger = InternalLoggerFactory.getInstance(DefaultDatagramChannelConfig.class);
private static final RecvByteBufAllocator DEFAULT_RCVBUF_ALLOCATOR = new FixedRecvByteBufAllocator(2048);
private final DatagramSocket javaSocket;
private volatile boolean activeOnOpen;
/**
* Creates a new instance.
*/
public DefaultDatagramChannelConfig(DatagramChannel channel, DatagramSocket javaSocket) {
super(channel);
if (javaSocket == null) {
throw new NullPointerException("javaSocket");
}
this.javaSocket = javaSocket;
setRecvByteBufAllocator(DEFAULT_RCVBUF_ALLOCATOR);
}
@Override
@SuppressWarnings("deprecation")
public Map<ChannelOption<?>, Object> getOptions() {
return getOptions(
super.getOptions(),
SO_BROADCAST, SO_RCVBUF, SO_SNDBUF, SO_REUSEADDR, IP_MULTICAST_LOOP_DISABLED,
IP_MULTICAST_ADDR, IP_MULTICAST_IF, IP_MULTICAST_TTL, IP_TOS, DATAGRAM_CHANNEL_ACTIVE_ON_REGISTRATION);
}
@Override
@SuppressWarnings({ "unchecked", "deprecation" })
public <T> T getOption(ChannelOption<T> option) {
if (option == SO_BROADCAST) {
return (T) Boolean.valueOf(isBroadcast());
}
if (option == SO_RCVBUF) {
return (T) Integer.valueOf(getReceiveBufferSize());
}
if (option == SO_SNDBUF) {
return (T) Integer.valueOf(getSendBufferSize());
}
if (option == SO_REUSEADDR) {
return (T) Boolean.valueOf(isReuseAddress());
}
if (option == IP_MULTICAST_LOOP_DISABLED) {
return (T) Boolean.valueOf(isLoopbackModeDisabled());
}
if (option == IP_MULTICAST_ADDR) {
return (T) getInterface();
}
if (option == IP_MULTICAST_IF) {
return (T) getNetworkInterface();
}
if (option == IP_MULTICAST_TTL) {
return (T) Integer.valueOf(getTimeToLive());
}
if (option == IP_TOS) {
return (T) Integer.valueOf(getTrafficClass());
}
if (option == DATAGRAM_CHANNEL_ACTIVE_ON_REGISTRATION) {
return (T) Boolean.valueOf(activeOnOpen);
}
return super.getOption(option);
}
@Override
@SuppressWarnings("deprecation")
public <T> boolean setOption(ChannelOption<T> option, T value) {
validate(option, value);
if (option == SO_BROADCAST) {
setBroadcast((Boolean) value);
} else if (option == SO_RCVBUF) {
setReceiveBufferSize((Integer) value);
} else if (option == SO_SNDBUF) {
setSendBufferSize((Integer) value);
} else if (option == SO_REUSEADDR) {
setReuseAddress((Boolean) value);
} else if (option == IP_MULTICAST_LOOP_DISABLED) {
setLoopbackModeDisabled((Boolean) value);
} else if (option == IP_MULTICAST_ADDR) {
setInterface((InetAddress) value);
} else if (option == IP_MULTICAST_IF) {
setNetworkInterface((NetworkInterface) value);
} else if (option == IP_MULTICAST_TTL) {
setTimeToLive((Integer) value);
} else if (option == IP_TOS) {
setTrafficClass((Integer) value);
} else if (option == DATAGRAM_CHANNEL_ACTIVE_ON_REGISTRATION) {
setActiveOnOpen((Boolean) value);
} else {
return super.setOption(option, value);
}
return true;
}
private void setActiveOnOpen(boolean activeOnOpen) {
if (channel.isRegistered()) {
throw new IllegalStateException("Can only changed before channel was registered");
}
this.activeOnOpen = activeOnOpen;
}
@Override
public boolean isBroadcast() {
try {
return javaSocket.getBroadcast();
} catch (SocketException e) {
throw new ChannelException(e);
}
}
@Override
public DatagramChannelConfig setBroadcast(boolean broadcast) {
try {
// See: https://github.com/netty/netty/issues/576
if (broadcast &&
!javaSocket.getLocalAddress().isAnyLocalAddress() &&
!PlatformDependent.isWindows() && !PlatformDependent.isRoot()) {
// Warn a user about the fact that a non-root user can't receive a
// broadcast packet on *nix if the socket is bound on non-wildcard address.
logger.warn(
"A non-root user can't receive a broadcast packet if the socket " +
"is not bound to a wildcard address; setting the SO_BROADCAST flag " +
"anyway as requested on the socket which is bound to " +
javaSocket.getLocalSocketAddress() + '.');
}
javaSocket.setBroadcast(broadcast);
} catch (SocketException e) {
throw new ChannelException(e);
}
return this;
}
@Override
public InetAddress getInterface() {
if (javaSocket instanceof MulticastSocket) {
try {
return ((MulticastSocket) javaSocket).getInterface();
} catch (SocketException e) {
throw new ChannelException(e);
}
} else {
throw new UnsupportedOperationException();
}
}
@Override
public DatagramChannelConfig setInterface(InetAddress interfaceAddress) {
if (javaSocket instanceof MulticastSocket) {
try {
((MulticastSocket) javaSocket).setInterface(interfaceAddress);
} catch (SocketException e) {
throw new ChannelException(e);
}
} else {
throw new UnsupportedOperationException();
}
return this;
}
@Override
public boolean isLoopbackModeDisabled() {
if (javaSocket instanceof MulticastSocket) {
try {
return ((MulticastSocket) javaSocket).getLoopbackMode();
} catch (SocketException e) {
throw new ChannelException(e);
}
} else {
throw new UnsupportedOperationException();
}
}
@Override
public DatagramChannelConfig setLoopbackModeDisabled(boolean loopbackModeDisabled) {
if (javaSocket instanceof MulticastSocket) {
try {
((MulticastSocket) javaSocket).setLoopbackMode(loopbackModeDisabled);
} catch (SocketException e) {
throw new ChannelException(e);
}
} else {
throw new UnsupportedOperationException();
}
return this;
}
@Override
public NetworkInterface getNetworkInterface() {
if (javaSocket instanceof MulticastSocket) {
try {
return ((MulticastSocket) javaSocket).getNetworkInterface();
} catch (SocketException e) {
throw new ChannelException(e);
}
} else {
throw new UnsupportedOperationException();
}
}
@Override
public DatagramChannelConfig setNetworkInterface(NetworkInterface networkInterface) {
if (javaSocket instanceof MulticastSocket) {
try {
((MulticastSocket) javaSocket).setNetworkInterface(networkInterface);
} catch (SocketException e) {
throw new ChannelException(e);
}
} else {
throw new UnsupportedOperationException();
}
return this;
}
@Override
public boolean isReuseAddress() {
try {
return javaSocket.getReuseAddress();
} catch (SocketException e) {
throw new ChannelException(e);
}
}
@Override
public DatagramChannelConfig setReuseAddress(boolean reuseAddress) {
try {
javaSocket.setReuseAddress(reuseAddress);
} catch (SocketException e) {
throw new ChannelException(e);
}
return this;
}
@Override
public int getReceiveBufferSize() {
try {
return javaSocket.getReceiveBufferSize();
} catch (SocketException e) {
throw new ChannelException(e);
}
}
@Override
public DatagramChannelConfig setReceiveBufferSize(int receiveBufferSize) {
try {
javaSocket.setReceiveBufferSize(receiveBufferSize);
} catch (SocketException e) {
throw new ChannelException(e);
}
return this;
}
@Override
public int getSendBufferSize() {
try {
return javaSocket.getSendBufferSize();
} catch (SocketException e) {
throw new ChannelException(e);
}
}
@Override
public DatagramChannelConfig setSendBufferSize(int sendBufferSize) {
try {
javaSocket.setSendBufferSize(sendBufferSize);
} catch (SocketException e) {
throw new ChannelException(e);
}
return this;
}
@Override
public int getTimeToLive() {
if (javaSocket instanceof MulticastSocket) {
try {
return ((MulticastSocket) javaSocket).getTimeToLive();
} catch (IOException e) {
throw new ChannelException(e);
}
} else {
throw new UnsupportedOperationException();
}
}
@Override
public DatagramChannelConfig setTimeToLive(int ttl) {
if (javaSocket instanceof MulticastSocket) {
try {
((MulticastSocket) javaSocket).setTimeToLive(ttl);
} catch (IOException e) {
throw new ChannelException(e);
}
} else {
throw new UnsupportedOperationException();
}
return this;
}
@Override
public int getTrafficClass() {
try {
return javaSocket.getTrafficClass();
} catch (SocketException e) {
throw new ChannelException(e);
}
}
@Override
public DatagramChannelConfig setTrafficClass(int trafficClass) {
try {
javaSocket.setTrafficClass(trafficClass);
} catch (SocketException e) {
throw new ChannelException(e);
}
return this;
}
@Override
public DatagramChannelConfig setWriteSpinCount(int writeSpinCount) {
super.setWriteSpinCount(writeSpinCount);
return this;
}
@Override
public DatagramChannelConfig setConnectTimeoutMillis(int connectTimeoutMillis) {
super.setConnectTimeoutMillis(connectTimeoutMillis);
return this;
}
@Override
public DatagramChannelConfig setMaxMessagesPerRead(int maxMessagesPerRead) {
super.setMaxMessagesPerRead(maxMessagesPerRead);
return this;
}
@Override
public DatagramChannelConfig setAllocator(ByteBufAllocator allocator) {
super.setAllocator(allocator);
return this;
}
@Override
public DatagramChannelConfig setRecvByteBufAllocator(RecvByteBufAllocator allocator) {
super.setRecvByteBufAllocator(allocator);
return this;
}
@Override
public DatagramChannelConfig setAutoRead(boolean autoRead) {
super.setAutoRead(autoRead);
return this;
}
@Override
public DatagramChannelConfig setAutoClose(boolean autoClose) {
super.setAutoClose(autoClose);
return this;
}
@Override
public DatagramChannelConfig setWriteBufferHighWaterMark(int writeBufferHighWaterMark) {
super.setWriteBufferHighWaterMark(writeBufferHighWaterMark);
return this;
}
@Override
public DatagramChannelConfig setWriteBufferLowWaterMark(int writeBufferLowWaterMark) {
super.setWriteBufferLowWaterMark(writeBufferLowWaterMark);
return this;
}
@Override
public DatagramChannelConfig setMessageSizeEstimator(MessageSizeEstimator estimator) {
super.setMessageSizeEstimator(estimator);
return this;
}
}