Java Server with Ruby client

java.log

java.lang.IllegalArgumentException: Illegal Capacity: -358941734
	at java.util.ArrayList.<init>(ArrayList.java:156)
	at org.apache.avro.ipc.NettyTransportCodec$NettyFrameDecoder.decodePackHeader(NettyTransportCodec.java:172)
	at org.apache.avro.ipc.NettyTransportCodec$NettyFrameDecoder.decode(NettyTransportCodec.java:139)
	at org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:286)
	at org.jboss.netty.handler.codec.frame.FrameDecoder.cleanup(FrameDecoder.java:337)
	at org.jboss.netty.handler.codec.frame.FrameDecoder.channelDisconnected(FrameDecoder.java:230)
	at org.jboss.netty.channel.Channels.fireChannelDisconnected(Channels.java:399)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.close(AbstractNioWorker.java:608)
	at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.handleAcceptedSocket(NioServerSocketPipelineSink.java:102)
	at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.eventSunk(NioServerSocketPipelineSink.java:59)
	at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:55)
	at org.jboss.netty.channel.Channels.close(Channels.java:821)
	at org.jboss.netty.channel.AbstractChannel.close(AbstractChannel.java:194)
	at org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.exceptionCaught(NettyServer.java:202)
	at org.apache.avro.ipc.NettyServer$NettyServerAvroHandler.handleUpstream(NettyServer.java:173)
	at org.jboss.netty.handler.codec.frame.FrameDecoder.exceptionCaught(FrameDecoder.java:242)
	at org.jboss.netty.channel.Channels.fireExceptionCaught(Channels.java:533)
	at org.jboss.netty.channel.AbstractChannelSink.exceptionCaught(AbstractChannelSink.java:49)
	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)
	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)
	at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:94)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.processSelectedKeys(AbstractNioWorker.java:364)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:238)
	at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:38)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)