TNS TCP::payload replace

Hi there,

Normally, you wouldn't know the pool member IP address until the LB_SELECTED event. However, you can force the pool member selection using the LB::select command ().

I think it might be possible (and more efficient) to use a stream profile and iRule to do this replacement. Can you try this example? You'll need to add a blank stream profile to the VIP.

 
 when CLIENT_ACCEPTED { 
  
     Force selection of a pool member 
    set selected [LB::select] 
  
     Use the selected pool member 
    eval $selected 
  
     Parse the IP address of the selected pool member 
    set node_ip [lindex $selected 3] 
    log local0. "\$node_ip: $node_ip" 
  
     Set the replacement string.  Replace the VIP address with the pool member address. 
    STREAM::expression "@[IP::local_addr]@$node_ip@" 
  
     Enable the stream filter using the above expression 
    STREAM::enable 
 } 
 when STREAM_MATCHED { 
     This event is for debug only.  It can be removed/commented out once you're done testing. 
  
     Log when we find a string to replace 
    log local0. "Found [STREAM::match] in request" 
  
 } 
 

Aaron