Xcode https call to Restful API - ios

Question

I am having an issue in making a call to our RESTful API. The request is to get the token from the API; I need that token to use it to make further calls on that API.
The issue is that whenever I make that call, I get HTTP 403 status code and I don't know why. I am making the same calls from Android but they work fine without any issue.
Actually I have no experience at all to work with xCode; I am just implementing some changes in the existing code which was written by some other developer. I don't know if I am doing something wrong or what.
id keys[] = {#"grant_type", #"client_id", #"client_secret", #"username", #"password"};
id objects[] = {#"password", #"AppClientID", #"AppClientSecret", #"usernamehere", #"userpasswordhere"};
NSUInteger count = sizeof(objects) / sizeof(id);
NSDictionary *d = [NSDictionary dictionaryWithObjects:objects forKeys:keys count:count];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:d options:NSJSONWritingPrettyPrinted error:nil];
NSURL *url = [NSURL URLWithString:#"https://oauth-test.websitename.com/token"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"Basic" forHTTPHeaderField:#"Authorization"];
[request setHTTPBody:jsonData];
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response,
NSData *data, NSError *connectionError) {
if(data.length > 0 && connectionError == nil) {
NSLog(#"Response --> %# ", response);
}
}
];
Can someone try to help me figure out what is actually going wrong?
Thanks in advance.

Answer 1

I ran your code and the log, i am getting is
Error Domain=NSURLErrorDomain Code=-1003 "A server with the specified
hostname could not be found." UserInfo=
{NSUnderlyingError=0x608000059aa0 {Error Domain=kCFErrorDomainCFNetwork
Code=-1003 "A server with the specified hostname could not be found."
UserInfo={NSErrorFailingURLStringKey=http://oauth-
test.websitename.com/token, NSErrorFailingURLKey=http://oauth-
test.websitename.com/token, _kCFStreamErrorCodeKey=8,
_kCFStreamErrorDomainKey=12, NSLocalizedDescription=A server with the
specified hostname could not be found.}},
NSErrorFailingURLStringKey=http://oauth-test.websitename.com/token,
NSErrorFailingURLKey=http://oauth-test.websitename.com/token,
_kCFStreamErrorDomainKey=12, _kCFStreamErrorCodeKey=8,
NSLocalizedDescription=A server with the specified hostname could not
be found.}
I tried it with NSUrlSession also but it is giving same problem.
I think your server is not configured
Below is the code with URL session
id keys[] = {#"grant_type", #"client_id", #"client_secret",
#"username", #"password"}; id objects[] = {#"password", #"AppClientID", #"AppClientSecret", #"usernamehere", #"userpasswordhere"};
NSUInteger count = sizeof(objects) / sizeof(id); NSDictionary *d = [NSDictionary dictionaryWithObjects:objects forKeys:keys count:count];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:d options:NSJSONWritingPrettyPrinted error:nil];
NSURL *url = [NSURL URLWithString:#"http://oauth-test.websitename.com/token"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"Basic" forHTTPHeaderField:#"Authorization"]; [request setHTTPBody:jsonData];
NSURLSession * session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
NSURLSessionDownloadTask *dataTask = [session downloadTaskWithRequest:request completionHandler:^(NSURL * _Nullable location, NSURLResponse * _Nullable response, NSError * _Nullable error) {
NSLog(#"%#", response);
}];
[dataTask resume];