title: java.io.IOException: Connection reset by peer
body: <p>Till yesterday my server was working fine, after sudden 500 disconnection of clients my Netty Server shows  <strong>java.io.IOException: Connection reset by peer</strong>  error  while client is connecting. Server is running on 
  Ubuntu Linux 12.04.1 LTS Edition</p>
  
  <p>JRE 7 </p>
  
  <p>and netty 3.5.11</p>
  
  <p>Why i am getting this error ?</p>
  
  <p>Is this occur due to any OS problem something like IP blocker?</p>
  
  <p>"I have read that this exception occur while trying to write something to a closed channel. But in my case I don't know how channel is being closed. Channel is closing after a message is being sent, all other functionalities works fine till yesterday"
  I have set the u limit already.</p>