从服务器objective-c获取数据

I have a problem getting data from the server. server is my localhost.

    SMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"localhost"] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:10.0];

[request setHTTPMethod:@"GET"]; 
[request setHTTPBody:[NSString stringWithFormat:@"test.php"]];

NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; 
if (connection)
{
    NSLog(@"NSURLConnection connection==true");
    NSURLResponse *response;
    NSError *err;
    NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
    NSLog(@"responseData: %@", responseData);
}
else
{
    NSLog(@"NSURLConnection connection==false");
};

on localhost I have simple php script called test.php:

    <?php
echo "It works!!!"
?>

If I'm opening localhost/test.php in safari I can see "It works!!!"

Try @"http://localhost" instead of @"localhost"]