createMetadataMatch

flowBuilder.setMatch(MatchUtils.createMetadataMatch().build());

private static MatchBuilder createMetadataMatch() {
MatchBuilder match = new MatchBuilder();
byte[] metamask = new byte[]

;
MetadataBuilder metadata = new MetadataBuilder(); // metadata match
metadata.setMetadata(BigInteger.valueOf(500L));
metadata.setMetadataMask(new BigInteger(metamask));
match.setMetadata(metadata.build());

return match;
}

Sent without a mask I get this:
-------------------------------
2014-08-21 22:27:11.075 EDT [nioEventLoopGroup-12-2] ERROR o.o.o.protocol.impl.core.OFDecoder - Message deserialization failed
2014-08-21 22:27:11.075 EDT [nioEventLoopGroup-12-2] ERROR o.o.o.protocol.impl.core.OFDecoder - Deserializer for key: msgVersion: 4 objectClass: org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ErrorMessage msgType: 65535 was not found - please verify that all needed deserializers ale loaded correctly
java.lang.NullPointerException: Deserializer for key: msgVersion: 4 objectClass: org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ErrorMessage msgType: 65535 was not found - please verify that all needed deserializers ale loaded correctly
at org.opendaylight.openflowjava.protocol.impl.deserialization.DeserializerRegistryImpl.getDeserializer(DeserializerRegistryImpl.java:61) ~[bundlefile:na]
at org.opendaylight.openflowjava.protocol.impl.deserialization.factories.ErrorMessageFactory.deserialize(ErrorMessageFactory.java:58) ~[bundlefile:na]
at org.opendaylight.openflowjava.protocol.impl.deserialization.factories.ErrorMessageFactory.deserialize(ErrorMessageFactory.java:42) ~[bundlefile:na]
at org.opendaylight.openflowjava.protocol.impl.deserialization.DeserializationFactory.deserialize(DeserializationFactory.java:53) ~[bundlefile:na]
at org.opendaylight.openflowjava.protocol.impl.core.OFDecoder.decode(OFDecoder.java:48) [bundlefile:na]
at org.opendaylight.openflowjava.protocol.impl.core.OFDecoder.decode(OFDecoder.java:26) [bundlefile:na]
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:341) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:327) [bundlefile:4.0.19.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:163) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:341) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:327) [bundlefile:4.0.19.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:163) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:341) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:327) [bundlefile:4.0.19.Final]
at io.netty.handler.timeout.ReadTimeoutHandler.channelRead(ReadTimeoutHandler.java:150) [bundlefile:4.0.19.Final]
at org.opendaylight.openflowjava.protocol.impl.core.IdleHandler.channelRead(IdleHandler.java:39) [bundlefile:na]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:341) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:327) [bundlefile:4.0.19.Final]
at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:341) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:327) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [bundlefile:4.0.19.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:126) [bundlefile:4.0.19.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:507) [bundlefile:4.0.19.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464) [bundlefile:4.0.19.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378) [bundlefile:4.0.19.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:345) [bundlefile:4.0.19.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) [bundlefile:4.0.19.Final]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_60]
2014-08-21 22:27:11.090 EDT [nioEventLoopGroup-12-2] WARN o.o.o.p.i.c.ResponseExpectedRpcListener - Request for RpcResultKey [xid=16, outputClazz=org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierOutput] did not receive a response
2014-08-21 22:27:11.093 EDT [nioEventLoopGroup-12-2] ERROR o.o.o.protocol.impl.core.OFDecoder - Message deserialization failed
2014-08-21 22:27:11.093 EDT [nioEventLoopGroup-12-2] ERROR o.o.o.protocol.impl.core.OFDecoder - Deserializer for key: msgVersion: 4 objectClass: org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ErrorMessage msgType: 65535 was not found - please verify that all needed deserializers ale loaded correctly
java.lang.NullPointerException: Deserializer for key: msgVersion: 4 objectClass: org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ErrorMessage msgType: 65535 was not found - please verify that all needed deserializers ale loaded correctly
at org.opendaylight.openflowjava.protocol.impl.deserialization.DeserializerRegistryImpl.getDeserializer(DeserializerRegistryImpl.java:61) ~[bundlefile:na]
at org.opendaylight.openflowjava.protocol.impl.deserialization.factories.ErrorMessageFactory.deserialize(ErrorMessageFactory.java:58) ~[bundlefile:na]
at org.opendaylight.openflowjava.protocol.impl.deserialization.factories.ErrorMessageFactory.deserialize(ErrorMessageFactory.java:42) ~[bundlefile:na]
at org.opendaylight.openflowjava.protocol.impl.deserialization.DeserializationFactory.deserialize(DeserializationFactory.java:53) ~[bundlefile:na]
at org.opendaylight.openflowjava.protocol.impl.core.OFDecoder.decode(OFDecoder.java:48) [bundlefile:na]
at org.opendaylight.openflowjava.protocol.impl.core.OFDecoder.decode(OFDecoder.java:26) [bundlefile:na]
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:341) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:327) [bundlefile:4.0.19.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:163) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:341) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:327) [bundlefile:4.0.19.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:163) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:341) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:327) [bundlefile:4.0.19.Final]
at io.netty.handler.timeout.ReadTimeoutHandler.channelRead(ReadTimeoutHandler.java:150) [bundlefile:4.0.19.Final]
at org.opendaylight.openflowjava.protocol.impl.core.IdleHandler.channelRead(IdleHandler.java:39) [bundlefile:na]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:341) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:327) [bundlefile:4.0.19.Final]
at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:341) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:327) [bundlefile:4.0.19.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [bundlefile:4.0.19.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:126) [bundlefile:4.0.19.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:507) [bundlefile:4.0.19.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464) [bundlefile:4.0.19.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378) [bundlefile:4.0.19.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:345) [bundlefile:4.0.19.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) [bundlefile:4.0.19.Final]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_60]