The Discovery Endpoint of the Open GDPR API specification returns the identity and request types supported by the server and a download link to the public key that can be used to validate the Signature received on the response headers.

To make a request to the Discovery Endpoint, endpoint you should use OpenGDPRDiscoveryClient.

Objective-C:

#import "OpenGDPRDiscoveryClient.h"

@interface ViewController () <OpenGDPRDiscoveryDelegate>
...
....
....
...
@end

...
....
    OpenGDPRDiscoveryClient *client = [[OpenGDPRDiscoveryClient alloc] init];
    [client fetchDiscoveryDataWithDelegate:self];
....
...

Swift:

...
....
    let client = OpenGDPRDiscoveryClient()
    client.fetchDiscoveryData(with: self)
....
...

Objective-C:

#pragma mark OpenGDPRDiscoveryDelegate

- (void)success:(DiscoveryResponseModel *)model
{
    // Handle success here
}

- (void)fail:(NSError *)error
{
    // Handle fail here
}

Swift:

extension ViewController : OpenGDPRDiscoveryDelegate
{
    func success(_ model: DiscoveryResponseModel!)
    {
        // Handle success here
    }
    
    func fail(_ error: Error!)
    {
        // Handle fail here
    }
}

Up to the current version the client is not caching the certificate that this endpoint receives, therefore it needs to be cached in memory if the response signature will be checked.

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