NPE with Netty

[survivant]

12:40:00.296 [New I/O client worker #1-1] DEBUG c.n.h.c.p.n.NettyAsyncHttpProvider - Closing Channel [id: 0x01a62c31, /127.0.0.1:3865 => localhost/127.0.0.1:8080]
12:40:00.296 [New I/O client worker #1-1] DEBUG c.n.h.c.p.n.NettyAsyncHttpProvider - Channel Closed: [id: 0x01a62c31, /127.0.0.1:3865 :> localhost/127.0.0.1:8080] with attachment com.ning.http.client.providers.netty.NettyAsyncHttpProvider$DiscardEvent@1fe1feb
12:40:15.232 [New I/O client worker #1-2] DEBUG c.n.h.c.p.n.NettyAsyncHttpProvider - Unexpected I/O exception on channel [id: 0x01f6ba0f, /127.0.0.1:3870 => localhost/127.0.0.1:8080]
java.lang.NullPointerException: null
at org.jboss.netty.handler.codec.http.HttpClientCodec$Decoder.isContentAlwaysEmpty(HttpClientCodec.java:124) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.handler.codec.http.HttpMessageDecoder.readHeaders(HttpMessageDecoder.java:450) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.handler.codec.http.HttpClientCodec$Decoder.decode(HttpClientCodec.java:108) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.handler.codec.http.HttpClientCodec$Decoder.decode(HttpClientCodec.java:96) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:465) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:438) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.handler.codec.http.HttpClientCodec.handleUpstream(HttpClientCodec.java:72) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:343) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.channel.socket.nio.NioWorker.processSelectedKeys(NioWorker.java:274) ~[netty-3.3.1.Final.jar:na]
at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:194) ~[netty-3.3.1.Final.jar:na]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) [na:1.6.0_07]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.6.0_07]
at java.lang.Thread.run(Unknown Source) [na:1.6.0_07]