what is iRule command to handle "no response" or "timeout" ?

I'm not completely sure what you mean by "no response". I think by "no response" you are meaning a hung or otherwise idle connection.

Currently, there is not a specific event that is used when reaping a connection due to it's idle timeout. We'll consider this for a future release.

However, there is a CLIENT_CLOSED event that could be used with some variables and/or the IP::stats command to potentially handle the "no response" case.

For example:

  
  rule unresponsive {  
     when CLIENT_ACCEPTED {  
        set got_response 0  
     }  
     when HTTP_RESPONSE {  
        set got_response 1  
     }  
     when CLIENT_CLOSED {  
        if { not $got_response } {  
           log "No server response on client [IP::remote_addr][TCP::remote_port] -> [IP::local_addr][TCP::local_port]"  
        }  
     }  
  }  
  

The IP::stats command can be used to determine whether the connection has received packets and/or the age of the connection. However, this command does not return the amount of time the connection is "idle".

Hope this helps, and thanks for the ideas.