do u guys know any good config for 290 non x and 270x? please let me know.

{
"pools" : [
        {
                "url" : "stratum+tcp://www.hashharder.com:9962 ",
                "user" : "unknown",
                "pass" : "xxx1234"
        }
       
]
,
"intensity" : "20",
"worksize" : "256",
"kernel" : "darkcoin",
"lookup-gap" : "2",
"thread-concurrency" : "32767,32767,21568,21568",
"gpu-engine" : "1100,1100,1100,1100",
"gpu-memclock" : "1250,1250,1465,1465",
"failover-only" : true,
"expiry" : "5",
"gpu-powertune": "20",
"log" : "5",
"queue" : "0",
"scan-time" : "1",
"device" : "0-3",
"no-submit-stale" : true,
"gpu-threads" : "1"
}

it tell me that it is wrong url. what is wrong with the address?