NSMutableURLRequest get -1012 http status code instead of 401

Question

I have to pass Authorization token in NSMutableURLRequest , My query is Whenever I have to pass Correct token than I am getting good response with https Status (200.. etc). but whenever I have to pass wrong Authorization token Than I am getting following response insted of http status code 401

* with wrong token response * (I had hide my query htpp:....)

Error Domain=NSURLErrorDomain Code=-1012 "(null)" UserInfo={NSErrorFailingURLStringKey=http......, NSUnderlyingError=0x60800024c420 {Error Domain=kCFErrorDomainCFNetwork Code=-1012 "(null)" UserInfo={_kCFURLErrorAuthFailedResponseKey={url = http.....}}}, NSErrorFailingURLKey=http....}

** here is my code ** // parameter in dictionary

   NSDictionary *parameters = @{ @"user_id": [NSNumber numberWithInt:1]};

   NSError *error;
   NSData *jsonData = [NSJSONSerialization dataWithJSONObject:parameters
                                                   options:NSJSONWritingPrettyPrinted
                                                     error:&error];

   // Convert dictionary to Json String

   if (! jsonData) {
    NSLog(@"Got an error: %@", error);
    } else {
    NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];

    jsonparameter = jsonString;

}

NSData *postData = [jsonparameter dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];

 NSMutableURLRequest *request = [NSMutableURLRequest
                                requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:SiteAPIURL,wsname]]];

    NSString *Accesstoken = [NSString stringWithFormat:@"Bearer %@",tokenInfo.access_token];

    // Set Access token 

    [request setValue:Accesstoken forHTTPHeaderField:@"Authorization"];

[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];

NSHTTPURLResponse __autoreleasing *response;
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];

NSLog(@"%@",error.localizedDescription);
NSLog(@"Status code =%ld",(long)response.statusCode);

Answer 1

401 is server generated error. -1012 is system generated error. This sometimes may be because of app is keeping cached certificates and certificate on the server has been changed so they don't match. Clearing Caches and Preferences folders from app's home directory will delete the old certificate data and app will have to download the new one from the server and you problem will be solved.