package org.opendaylight.lispflowmapping.southbound.lisp;
+import static org.opendaylight.yangtools.yang.common.UintConversions.fromJava;
+
import io.netty.buffer.ByteBufUtil;
+import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
-import org.opendaylight.controller.md.sal.binding.api.NotificationPublishService;
+import java.util.Objects;
+import org.opendaylight.lispflowmapping.config.ConfigIni;
+import org.opendaylight.lispflowmapping.lisp.authentication.ILispAuthentication;
+import org.opendaylight.lispflowmapping.lisp.authentication.LispAuthenticationUtil;
import org.opendaylight.lispflowmapping.lisp.serializer.MapNotifySerializer;
import org.opendaylight.lispflowmapping.lisp.serializer.MapRegisterSerializer;
import org.opendaylight.lispflowmapping.lisp.serializer.MapReplySerializer;
import org.opendaylight.lispflowmapping.lisp.util.ByteUtil;
import org.opendaylight.lispflowmapping.lisp.util.LispAddressStringifier;
import org.opendaylight.lispflowmapping.lisp.util.MapRequestUtil;
+import org.opendaylight.lispflowmapping.southbound.ConcurrentLispSouthboundStats;
import org.opendaylight.lispflowmapping.southbound.LispSouthboundPlugin;
-import org.opendaylight.lispflowmapping.southbound.LispSouthboundStats;
-import org.opendaylight.lispflowmapping.southbound.lisp.cache.MapRegisterCache;
import org.opendaylight.lispflowmapping.southbound.lisp.cache.MapRegisterPartialDeserializer;
import org.opendaylight.lispflowmapping.southbound.lisp.exception.LispMalformedPacketException;
import org.opendaylight.lispflowmapping.southbound.lisp.network.PacketHeader;
import org.opendaylight.lispflowmapping.southbound.util.LispNotificationHelper;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.PortNumber;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.PortNumber;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.AddMappingBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.GotMapNotifyBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.GotMapReplyBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.map.register.cache.metadata.container.map.register.cache.metadata.EidLispAddressBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.map.register.cache.value.grouping.MapRegisterCacheValue;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.map.register.cache.value.grouping.MapRegisterCacheValueBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.authkey.container.MappingAuthkey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.record.container.MappingRecord;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.record.list.MappingRecordItem;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.transport.address.TransportAddressBuilder;
-import org.opendaylight.yangtools.yang.binding.Notification;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ChannelHandler.Sharable
public class LispSouthboundHandler extends SimpleChannelInboundHandler<DatagramPacket>
- implements ILispSouthboundService {
- private final MapRegisterCache mapRegisterCache;
-
- /**
- * How long is record supposed to be relevant. After this time record isn't valid.
- *
- * If you modify this value, please update the LispSouthboundServiceTest class too.
- */
- private static final long CACHE_RECORD_TIMEOUT = 90000;
-
- private NotificationPublishService notificationPublishService;
+ implements ILispSouthboundService, AutoCloseable {
protected static final Logger LOG = LoggerFactory.getLogger(LispSouthboundHandler.class);
+ //TODO: think whether this field can be accessed through mappingservice or some other configuration parameter
+ private boolean authenticationEnabled = ConfigIni.getInstance().isAuthEnabled();
private final LispSouthboundPlugin lispSbPlugin;
- private LispSouthboundStats lispSbStats = null;
+ private boolean isReadFromChannelEnabled = true;
- public LispSouthboundHandler(LispSouthboundPlugin lispSbPlugin, final MapRegisterCache mapRegisterCache) {
- this.lispSbPlugin = lispSbPlugin;
- if (lispSbPlugin != null) {
- this.lispSbStats = lispSbPlugin.getStats();
- }
- this.mapRegisterCache = mapRegisterCache;
- }
+ private Channel channel;
public LispSouthboundHandler(LispSouthboundPlugin lispSbPlugin) {
- this(lispSbPlugin, new MapRegisterCache());
- }
-
- public void setNotificationProvider(NotificationPublishService nps) {
- this.notificationPublishService = nps;
+ this.lispSbPlugin = lispSbPlugin;
}
public void handlePacket(DatagramPacket msg) {
handleEncapsulatedControlMessage(inBuffer, msg.sender().getAddress());
} else if (lispType == MessageType.MapRequest) {
LOG.trace("Received packet of type Map-Request");
- handleMapRequest(inBuffer, msg.sender().getPort());
+ handleMapRequest(inBuffer, msg.sender().getAddress(), msg.sender().getPort());
} else if (lispType == MessageType.MapRegister) {
LOG.trace("Received packet of type Map-Register");
handleMapRegister(inBuffer, msg.sender().getAddress(), msg.sender().getPort());
}
}
+ @SuppressWarnings("checkstyle:IllegalCatch")
private void handleEncapsulatedControlMessage(ByteBuffer inBuffer, InetAddress sourceAddress) {
try {
- handleMapRequest(inBuffer, extractEncapsulatedSourcePort(inBuffer));
+ handleMapRequest(inBuffer, sourceAddress, extractEncapsulatedSourcePort(inBuffer));
} catch (RuntimeException re) {
throw new LispMalformedPacketException("Couldn't deserialize Map-Request (len="
+ inBuffer.capacity() + ")", re);
}
}
- private void handleMapRequest(ByteBuffer inBuffer, int port) {
+ @SuppressWarnings("checkstyle:IllegalCatch")
+ private void handleMapRequest(ByteBuffer inBuffer, InetAddress sourceAddress, int port) {
try {
- MapRequest request = MapRequestSerializer.getInstance().deserialize(inBuffer);
+ MapRequest request = MapRequestSerializer.getInstance().deserialize(inBuffer, sourceAddress);
InetAddress finalSourceAddress = MapRequestUtil.selectItrRloc(request);
if (finalSourceAddress == null) {
throw new LispMalformedPacketException("Couldn't deserialize Map-Request, no ITR Rloc found!");
TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
transportAddressBuilder.setIpAddress(
LispNotificationHelper.getIpAddressBinaryFromInetAddress(finalSourceAddress));
- transportAddressBuilder.setPort(new PortNumber(port));
+ transportAddressBuilder.setPort(new PortNumber(fromJava(port)));
requestMappingBuilder.setTransportAddress(transportAddressBuilder.build());
- if (notificationPublishService != null) {
- notificationPublishService.putNotification(requestMappingBuilder.build());
- LOG.trace("MapRequest was published!");
- } else {
- LOG.warn("Notification Provider is null!");
- }
+ lispSbPlugin.sendNotificationIfPossible(requestMappingBuilder.build());
} catch (RuntimeException re) {
throw new LispMalformedPacketException("Couldn't deserialize Map-Request (len="
+ inBuffer.capacity() + ")", re);
}
}
+ @SuppressWarnings("checkstyle:IllegalCatch")
private int extractEncapsulatedSourcePort(ByteBuffer inBuffer) {
try {
inBuffer.position(PacketHeader.Length.LISP_ENCAPSULATION);
}
}
+ @SuppressWarnings("checkstyle:IllegalCatch")
private void handleMapRegister(ByteBuffer inBuffer, InetAddress sourceAddress, int port) {
try {
- final Map.Entry<MapRegisterCacheKey, byte[]> artificialEntry = MapRegisterPartialDeserializer
- .deserializePartially(inBuffer, sourceAddress);
- final MapRegisterCacheKey cacheKey = artificialEntry == null ? null : artificialEntry.getKey();
-
- final MapRegisterCacheValue cacheValue = resolveCacheValue(artificialEntry);
+ Map.Entry<MapRegisterCacheKey, byte[]> artificialEntry = null;
+ MapRegisterCacheKey cacheKey = null;
+ MapRegisterCacheValue cacheValue = null;
+ if (lispSbPlugin.isMapRegisterCacheEnabled()) {
+ artificialEntry = MapRegisterPartialDeserializer.deserializePartially(inBuffer, sourceAddress);
+ cacheKey = artificialEntry == null ? null : artificialEntry.getKey();
+ cacheValue = resolveCacheValue(artificialEntry);
+ }
if (cacheValue != null) {
- final MapRegisterCacheMetadata mapRegisterValue = cacheValue.getMapRegisterCacheMetadata();
- LOG.debug("Map register message site-ID: {} xTR-ID: {} from cache.", mapRegisterValue.getSiteId(),
- mapRegisterValue.getXtrId());
- mapRegisterCache.refreshEntry(cacheKey);
- sendNotificationIfPossible(createMappingKeepAlive(cacheValue));
- if (mapRegisterValue.isWantMapNotify()) {
- sendMapNotifyMsg(inBuffer, sourceAddress, port);
+ lispSbPlugin.getStats().incrementCacheHits();
+ MapRegisterCacheMetadata mapRegisterMeta = cacheValue.getMapRegisterCacheMetadata();
+ LOG.debug("Map register message site-ID: {} xTR-ID: {} from cache.", mapRegisterMeta.getSiteId(),
+ mapRegisterMeta.getXtrId());
+ cacheValue = refreshEntry(cacheKey);
+ if (cacheValue != null) {
+ lispSbPlugin.sendNotificationIfPossible(createMappingKeepAlive(cacheValue));
+ if (cacheValue.getMapRegisterCacheMetadata().isWantMapNotify()) {
+ sendMapNotifyMsg(inBuffer, sourceAddress, port, cacheValue);
+ }
}
} else {
+ lispSbPlugin.getStats().incrementCacheMisses();
MapRegister mapRegister = MapRegisterSerializer.getInstance().deserialize(inBuffer, sourceAddress);
+
+ MappingAuthkey mappingAuthkey = null;
+ if (authenticationEnabled) {
+ mappingAuthkey = tryToAuthenticateMessage(mapRegister, inBuffer);
+ if (mappingAuthkey == null) {
+ return;
+ }
+ }
+
AddMappingBuilder addMappingBuilder = new AddMappingBuilder();
addMappingBuilder.setMapRegister(LispNotificationHelper.convertMapRegister(mapRegister));
TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
transportAddressBuilder.setIpAddress(LispNotificationHelper.getIpAddressBinaryFromInetAddress(
sourceAddress));
- transportAddressBuilder.setPort(new PortNumber(port));
+ transportAddressBuilder.setPort(new PortNumber(fromJava(port)));
addMappingBuilder.setTransportAddress(transportAddressBuilder.build());
- sendNotificationIfPossible(addMappingBuilder.build());
+ lispSbPlugin.sendNotificationIfPossible(addMappingBuilder.build());
if (artificialEntry != null) {
- final MapRegisterCacheMetadataBuilder cacheMetadataBldNew = new MapRegisterCacheMetadataBuilder();
+ final MapRegisterCacheMetadataBuilder cacheMetadataBldNew = new
+ MapRegisterCacheMetadataBuilder();
cacheMetadataBldNew.setEidLispAddress(provideEidPrefixesFromMessage(mapRegister));
cacheMetadataBldNew.setXtrId(mapRegister.getXtrId());
cacheMetadataBldNew.setSiteId(mapRegister.getSiteId());
final MapRegisterCacheValueBuilder cacheValueBldNew = new MapRegisterCacheValueBuilder();
cacheValueBldNew.setPacketData(artificialEntry.getValue());
+ cacheValueBldNew.setMappingAuthkey(mappingAuthkey);
cacheValueBldNew.setMapRegisterCacheMetadata(cacheMetadataBldNew.build());
- mapRegisterCache.addEntry(cacheKey, cacheValueBldNew.build());
+ lispSbPlugin.getMapRegisterCache().addEntry(cacheKey, cacheValueBldNew.build());
}
}
} catch (RuntimeException re) {
}
}
+ private MapRegisterCacheValue refreshEntry(final MapRegisterCacheKey cacheKey) {
+ MapRegisterCacheValue mapRegisterCacheValue = lispSbPlugin.getMapRegisterCache().refreshEntry(cacheKey);
+ if (mapRegisterCacheValue != null) {
+ mapRegisterCacheValue = refreshAuthKeyIfNecessary(mapRegisterCacheValue);
+ lispSbPlugin.getMapRegisterCache().addEntry(cacheKey, mapRegisterCacheValue);
+ return mapRegisterCacheValue;
+ }
+ return null;
+ }
+
+ private MapRegisterCacheValue refreshAuthKeyIfNecessary(MapRegisterCacheValue mapRegisterCacheValue) {
+ final List<EidLispAddress> eids = mapRegisterCacheValue.getMapRegisterCacheMetadata().getEidLispAddress();
+
+ if (lispSbPlugin.getAuthenticationKeyDataListener().authKeysForEidsUnchanged(
+ eids, lispSbPlugin.getMapRegisterCacheTimeout())) {
+ return mapRegisterCacheValue;
+ }
+
+ final MappingAuthkey mappingAuthkey = provideAuthenticateKey(eids);
+ final MapRegisterCacheValueBuilder newMapRegisterCacheValueBuilder = new MapRegisterCacheValueBuilder(
+ mapRegisterCacheValue);
+ final MapRegisterCacheMetadataBuilder newMapRegisterCacheMetadataBuilder =
+ new MapRegisterCacheMetadataBuilder(mapRegisterCacheValue.getMapRegisterCacheMetadata());
+
+ newMapRegisterCacheValueBuilder.setMappingAuthkey(mappingAuthkey);
+ newMapRegisterCacheValueBuilder.setMapRegisterCacheMetadata(newMapRegisterCacheMetadataBuilder.build());
+ return newMapRegisterCacheValueBuilder.build();
+ }
+
private MapRegisterCacheValue resolveCacheValue(Map.Entry<MapRegisterCacheKey, byte[]> entry) {
if (entry != null) {
- final MapRegisterCacheValue mapRegisterCacheValue = mapRegisterCache.getEntry(entry.getKey());
+ final MapRegisterCacheValue mapRegisterCacheValue =
+ lispSbPlugin.getMapRegisterCache().getEntry(entry.getKey());
if (mapRegisterCacheValue != null) {
final long creationTime = mapRegisterCacheValue.getMapRegisterCacheMetadata().getTimestamp();
final long currentTime = System.currentTimeMillis();
- if (currentTime - creationTime > CACHE_RECORD_TIMEOUT) {
- mapRegisterCache.removeEntry(entry.getKey());
+ if (currentTime - creationTime > lispSbPlugin.getMapRegisterCacheTimeout()) {
+ lispSbPlugin.getMapRegisterCache().removeEntry(entry.getKey());
return null;
} else if (Arrays.equals(mapRegisterCacheValue.getPacketData(), entry.getValue())) {
return mapRegisterCacheValue;
return null;
}
- private void sendNotificationIfPossible(final Notification notification) throws InterruptedException {
- if (notificationPublishService != null) {
- notificationPublishService.putNotification(notification);
- LOG.trace("{} was published.", notification.getClass());
- } else {
- LOG.warn("Notification Provider is null!");
- }
- }
-
private MappingKeepAlive createMappingKeepAlive(final MapRegisterCacheValue value) {
MappingKeepAliveBuilder mappingKeepAliveBuilder = new MappingKeepAliveBuilder();
mappingKeepAliveBuilder.setMapRegisterCacheMetadata(value.getMapRegisterCacheMetadata());
return mappingKeepAliveBuilder.build();
}
- private void sendMapNotifyMsg(final ByteBuffer inBuffer, final InetAddress inetAddress, int portNumber) {
- ByteBuffer outBuffer = transformMapRegisterToMapNotify(inBuffer);
- outBuffer.position(0);
- lispSbPlugin.handleSerializedLispBuffer(inetAddress, outBuffer, MessageType.MapNotify, portNumber);
+ /**
+ * Returns null if not all of eids have the same value of authentication key.
+ */
+ private MappingAuthkey provideAuthenticateKey(final List<EidLispAddress> eidLispAddresses) {
+ MappingAuthkey firstAuthKey = null;
+ for (int i = 0; i < eidLispAddresses.size(); i++) {
+ final Eid eid = eidLispAddresses.get(i).getEid();
+ if (i == 0) {
+ firstAuthKey = lispSbPlugin.getAkdb().getAuthenticationKey(eid);
+ } else {
+ final MappingAuthkey authKey = lispSbPlugin.getAkdb().getAuthenticationKey(eid);
+ if (!Objects.equals(firstAuthKey, authKey)) {
+ return null;
+ }
+ }
+ }
+ return firstAuthKey;
+
+ }
+
+ private void sendMapNotifyMsg(final ByteBuffer inBuffer, final InetAddress inetAddress, int portNumber,
+ MapRegisterCacheValue mapRegisterValue) {
+ if (mapRegisterValue.getMappingAuthkey().getKeyType() != null) {
+ ByteBuffer outBuffer = transformMapRegisterToMapNotify(inBuffer);
+ if (mapRegisterValue.getMappingAuthkey().getKeyType().toJava() != 0) {
+ outBuffer = calculateAndSetNewMAC(outBuffer, mapRegisterValue.getMappingAuthkey().getKeyString());
+ }
+ outBuffer.position(0);
+ lispSbPlugin.handleSerializedLispBuffer(inetAddress, outBuffer, MessageType.MapNotify, portNumber,
+ this.channel);
+ } else {
+ LOG.error("Map-Register Cache: authentication succeeded, but can't find auth key for sending Map-Notify");
+ }
+ }
+
+ /**
+ * Calculates new message authentication code (MAC) for notify message.
+ */
+ private ByteBuffer calculateAndSetNewMAC(final ByteBuffer buffer, final String authKey) {
+ final byte[] authenticationData = LispAuthenticationUtil.createAuthenticationData(buffer, authKey);
+ buffer.position(ILispAuthentication.MAP_REGISTER_AND_NOTIFY_AUTHENTICATION_POSITION);
+ buffer.put(authenticationData);
+ return buffer;
}
private ByteBuffer transformMapRegisterToMapNotify(final ByteBuffer buffer) {
buffer.position(0);
- //TODO: also reset of authentication data is required. other trello card is opened for this task.
- byte[] byteReplacement = new byte[] {0x04, 0x00, 0x00};
+ byte typeAndFlags = buffer.get(0);
+ // Shift the xTR-ID present and built for an RTR bits to their correct position
+ byte flags = (byte) ((typeAndFlags << 2) & 0x0F);
+ // Set control message type to 4 (Map-Notify)
+ byte type = 0x40;
+ // Combine the nibbles
+ typeAndFlags = (byte) (type | flags);
+ byte[] byteReplacement = new byte[] {typeAndFlags, 0x00, 0x00};
buffer.put(byteReplacement);
+
return buffer;
}
return eidsResult;
}
+ /**
+ * Checks whether authentication data is valid.
+ *
+ * <p>Methods pass through all records from map register message. For the EID of the first record it gets
+ * authentication key and does validation of authentication data again this authentication key. If it pass
+ * it just checks for remaining records (and its EID) whether they have the same authentication key stored in
+ * the authentication key database.
+ *
+ * @return Returns authentication key if all of EIDs have the same authentication key or null otherwise
+ */
+ private MappingAuthkey tryToAuthenticateMessage(final MapRegister mapRegister, final ByteBuffer byteBuffer) {
+ if (lispSbPlugin.getAkdb() == null) {
+ LOG.debug("Simple map cache wasn't instantieted and set.");
+ return null;
+ }
+
+ MappingAuthkey firstAuthKey = null;
+ final List<MappingRecordItem> mappingRecords = mapRegister.getMappingRecordItem();
+ for (int i = 0; i < mappingRecords.size(); i++) {
+ final MappingRecordItem recordItem = mappingRecords.get(i);
+ final MappingRecord mappingRecord = recordItem.getMappingRecord();
+ if (i == 0) {
+ firstAuthKey = lispSbPlugin.getAkdb().getAuthenticationKey(mappingRecord.getEid());
+ if (!LispAuthenticationUtil.validate(mapRegister, byteBuffer, mappingRecord.getEid(), firstAuthKey)) {
+ return null;
+ }
+ } else {
+ final Eid eid = mappingRecord.getEid();
+ final MappingAuthkey authKey = lispSbPlugin.getAkdb().getAuthenticationKey(eid);
+ if (!firstAuthKey.equals(authKey)) {
+ LOG.debug("Map register packet contained several eids. Authentication keys for first one and for "
+ + "{} are different.",LispAddressStringifier.getString(eid));
+ return null;
+ }
+ }
+ }
+ return firstAuthKey;
+ }
+
+ @SuppressWarnings("checkstyle:IllegalCatch")
private void handleMapNotify(ByteBuffer inBuffer, InetAddress sourceAddress, int port) {
try {
MapNotify mapNotify = MapNotifySerializer.getInstance().deserialize(inBuffer);
TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
transportAddressBuilder.setIpAddress(LispNotificationHelper
.getIpAddressBinaryFromInetAddress(sourceAddress));
- transportAddressBuilder.setPort(new PortNumber(port));
+ transportAddressBuilder.setPort(new PortNumber(fromJava(port)));
gotMapNotifyBuilder.setTransportAddress(transportAddressBuilder.build());
- if (notificationPublishService != null) {
- notificationPublishService.putNotification(gotMapNotifyBuilder.build());
- LOG.trace("MapNotify was published!");
- } else {
- LOG.warn("Notification Provider is null!");
- }
+ lispSbPlugin.sendNotificationIfPossible(gotMapNotifyBuilder.build());
} catch (RuntimeException re) {
throw new LispMalformedPacketException("Couldn't deserialize Map-Notify (len="
+ inBuffer.capacity() + ")", re);
}
}
+ @SuppressWarnings("checkstyle:IllegalCatch")
private void handleMapReply(ByteBuffer inBuffer, InetAddress sourceAddress, int port) {
try {
MapReply mapReply = MapReplySerializer.getInstance().deserialize(inBuffer);
TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
transportAddressBuilder.setIpAddress(LispNotificationHelper
.getIpAddressBinaryFromInetAddress(sourceAddress));
- transportAddressBuilder.setPort(new PortNumber(port));
+ transportAddressBuilder.setPort(new PortNumber(fromJava(port)));
gotMapReplyBuilder.setTransportAddress(transportAddressBuilder.build());
- if (notificationPublishService != null) {
- notificationPublishService.putNotification(gotMapReplyBuilder.build());
- LOG.trace("MapReply was published!");
- } else {
- LOG.warn("Notification Provider is null!");
- }
+ lispSbPlugin.sendNotificationIfPossible(gotMapReplyBuilder.build());
} catch (RuntimeException re) {
throw new LispMalformedPacketException("Couldn't deserialize Map-Reply (len="
+ inBuffer.capacity() + ")", re);
}
private void handleStats(int type) {
- if (lispSbStats != null) {
- if (type <= LispSouthboundStats.MAX_LISP_TYPES) {
- lispSbStats.incrementRx(type);
+ if (lispSbPlugin.getStats() != null) {
+ if (type <= ConcurrentLispSouthboundStats.MAX_LISP_TYPES) {
+ lispSbPlugin.getStats().incrementRx(type);
} else {
- lispSbStats.incrementRxUnknown();
+ lispSbPlugin.getStats().incrementRxUnknown();
}
}
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
- if (LOG.isTraceEnabled()) {
- LOG.trace("Received UDP packet from {}:{} with content:\n{}", msg.sender().getHostString(),
- msg.sender().getPort(), ByteBufUtil.prettyHexDump(msg.content()));
+ if (isReadFromChannelEnabled) {
+ if (LOG.isTraceEnabled()) {
+ LOG.trace("Received UDP packet from {}:{} with content:\n{}", msg.sender().getHostString(),
+ msg.sender().getPort(), ByteBufUtil.prettyHexDump(msg.content()));
+ }
+ this.channel = ctx.channel();
+ handlePacket(msg);
}
- handlePacket(msg);
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
LOG.error("Error on channel: " + cause, cause);
}
+
+ @Override
+ public void close() throws Exception {
+ }
}
Code Review / lispflowmapping.git / blobdiff