         
         lastSequenceSent = seqNo
         lastSentTime = NSDate()
-        
-        println("ping \(seqNo)")
     }
     
     func simplePing(pinger: SimplePing!, didFailToSendPacket packet: NSData!, error: NSError!) {

    }
    
    func simplePing(pinger: SimplePing!, didFailWithError error: NSError!) {
        //everything's ruined.
        status = Status.Failure
        println("failed with error: \(error)")
    }

        } else {
            if let lastTime = lastSentTime {
                lastLag = NSDate().timeIntervalSinceDate(lastTime) * 1_000
                println("pong \(seqNo) - lag \(lastLag)")
            }
        }
    }
