NSURLRequest doesn't send variable post

Goodmorning every one,

i have this problem since i update my iphone to ios 9,i source in google and i find to use NSURLSession and Active the NSAppTransportSecurity. I can't send the params to php script but the php return a response then the connession is avaiable

i try this code

    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
    NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];
    NSURL *url = [NSURL URLWithString:@"http:/
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                                                           cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                       timeoutInterval:60.0];
  
    [request addValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
    [request addValue:@"application/json" forHTTPHeaderField:@"Accept"];
  
    [request setHTTPMethod:@"POST"];
    NSString *postString = @"company=Locassa&quality=AWESOME!";
    [request setHTTPBody:[postString dataUsingEncoding:NSUTF8StringEncoding]];
  
  
    NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
        NSLog(@"%@",[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);
    }];
  
    [postDataTask resume];

in ios <9 i try this with the same tesult

NSURL *url = [NSURL URLWithString:@"    NSString *post=[NSString stringWithFormat:@"user=b.bartsv@gmail.com&psw=1"];
    
    NSData *postData=[post dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
    NSString *postLength =[NSString stringWithFormat:@"%lu",(unsigned long)[postData length]];
    NSMutableURLRequest *request=[[NSMutableURLRequest alloc]init];
    [request setURL:url];
    [request setHTTPMethod:@"POST"];
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Current-Type"];
    [request setHTTPBody:postData];
    NSURLConnection *conn = [[NSURLConnection alloc]initWithRequest:request delegate:self startImmediately:YES];
    if(conn) {
        NSLog(@"Connection Successfulaaa");
          return 0;
    } else {
        return -1;
    }
  

thank you