I am trying to access a web page to retrieve JSON data.
When I access the page through the browser it shows me a small box said authentication required A username and password are being requested by The site says: " API""
I am trying to get these data to pass then to NSdictionary object.
What I found is that my response for the HTTP request is "401 - Unauthorized: Access is denied due to invalid credentials.You do not have permission to view this directory or page using the credentials that you supplied"
FYI, I passed the username and password in the authorization header for the request.
but what I found in the browser that it will ask for
WWW-Authenticate: Basic realm="API" before the getting or showing the data
I looked up for a solution, I red about NSURLCredential So I implemented the NSURLsession delegate to trigger its function (
- (void)URLSession:(NSURLSession *)session
didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition,
NSURLCredential *credential))completionHandler
) but it was never called I don't know why
What should I do?
This is my code:
+(void)getUsername:(NSString*)username andPassword:(NSString*)password completionBlock:(void(^)(NSDictionary* response))completion
{
NSString *authStr = [NSString stringWithFormat:@"%@:%@", username, password];
NSData *authData = [authStr dataUsingEncoding:NSUTF8StringEncoding];
NSString *base64String = [authData base64EncodedStringWithOptions:0];
NSString *authValue = [NSString stringWithFormat:@"Basic %@", base64String];
__block NSDictionary *currentUserdictionarytest = nil;
NSDictionary *headers = @{ @"authorization": authValue,
@"accept": @"application/json",
@"accept": @"text/html",
@"cache-control": @"no-cache",
@"postman-token": @"0a47efb3-c559-c0f9-8276-87cbdbe76c9d" };
NSString *url = @"http://demo.redmine.org/";
stringByAppendingString:@"users/current.json"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url]
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:10.0];
[request setHTTPMethod:@"GET"];
[request setAllHTTPHeaderFields:headers];
NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration: defaultConfigObject delegate: self delegateQueue:nil]; //[NSOperationQueue mainQueue]]; //[NSURLSession sharedSession];
NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request
completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (error) {
NSLog(@"%@", error);
} else {
NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response;
NSLog(@"%@", httpResponse);
NSError *JSONError = nil;
currentUserdictionarytest = [NSJSONSerialization JSONObjectWithData:data
options:0
error:&JSONError];
NSLog(@"Printing current user data: %@", data);
NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"Printing current user data string: %@", str);
if (JSONError)
{
NSLog(@"Serialization error: %@", JSONError.localizedDescription);
}
else
{
NSLog(@"Response: %@", currentUserdictionarytest);
}
}
}];
[dataTask resume];
}
- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler
{
NSLog(@"did receive challenge method called with task");
NSString* username = @"username";
NSString* password = @"password";
if ([challenge previousFailureCount] == 0) {
NSURLCredential *newCredential;
newCredential = [NSURLCredential credentialWithUser:username
password:password
persistence:NSURLCredentialPersistenceNone];
[[challenge sender] useCredential:newCredential
forAuthenticationChallenge:challenge];
} else {
[[challenge sender] cancelAuthenticationChallenge:challenge];
}
}
