@implementation databaseCntcn{
MongoConnection *conn;
AppDelegate* appdel;
}

-(BOOL)connection{

@try {
    appdel =(AppDelegate*)[[UIApplication sharedApplication]delegate];
    if (appdel.isNetOn) {
        NSError *error = nil;
        conn =[MongoConnection connectionForServer:@"myhost/port" error:&error];
        [conn authenticate:@"admin" username:@"myusername" password:@"mypassword" error:&error];
        if (conn) {
            NSLog(@"true");

            return true;
        }
        else{
            UIAlertView *a=[[UIAlertView alloc]initWithTitle:@"Cannot connect to server" message:@"Please check your internet connection" delegate:nil cancelButtonTitle:@"ok" otherButtonTitles:nil];
            [a show];
        }

    }
    else{

    }
    return false;
}
 @catch (NSException *exception) {

} @finally {

}

}