session {add|delete} ssl question

when CLIENT_ACCEPTED {  
     set http_collect 0  
  }  
    
  when HTTP_REQUEST {  
     if {[HTTP::request_num] > 10} {  
        SSL::renegotiate  
        HTTP::collect  
        set http_collect 1  
     }  
  }  
    
  when CLIENTSSL_HANDSHAKE {  
    if {$http_collect == 1} {  
       set http_collect 0  
       HTTP::release  
    }  
  }