java.nio.channels.ClosedChannelException: null- java.lang.UnsupportedOperationException: AsyncHandlerActor pool hasn't been started

Hi,

While posting multiple requests am getting this exception, Could you help me on this anyone.

java.nio.channels.ClosedChannelException: null
at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$1.operationComplete(NioClientSocketPipelineSink.java:115)
at org.jboss.netty.channel.DefaultChannelFuture.notifyListener(DefaultChannelFuture.java:409)
at org.jboss.netty.channel.DefaultChannelFuture.notifyListeners(DefaultChannelFuture.java:395)
at org.jboss.netty.channel.DefaultChannelFuture.setSuccess(DefaultChannelFuture.java:340)
at org.jboss.netty.channel.AbstractChannel$ChannelCloseFuture.setClosed(AbstractChannel.java:455)
at org.jboss.netty.channel.AbstractChannel.setClosed(AbstractChannel.java:194)
at org.jboss.netty.channel.socket.nio.AbstractNioChannel.setClosed(AbstractNioChannel.java:169)
at org.jboss.netty.channel.socket.nio.NioSocketChannel.setClosed(NioSocketChannel.java:84)
at org.jboss.netty.channel.socket.nio.AbstractNioWorker.close(AbstractNioWorker.java:356)
at org.jboss.netty.channel.socket.nio.NioClientBoss.close(NioClientBoss.java:169)
at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:325)
at org.jboss.netty.channel.socket.nio.NioClientBoss.run(NioClientBoss.java:42)
at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
11:59:34.400 [New I/O boss #10] DEBUG com.ning.http.client.providers.netty.request.NettyConnectListener - Failed to recover from connect exception: java.nio.channels.ClosedChannelException with channel [id: 0x72233c6f]

You’re using Gatling 2.1, whose last release (2.1.7) was released more than 3 years ago!
Since then, we’ve release 2.2, 2.3 and now 3.0.0-RC1.
Time to upgrade!