Request failed: forbidden (403) for fabric twitterkit - ios

Question

I'm trying to extract the members of a list using the TwitterKit API for iOS. As I understand, doing this will allow me to be "guest-authenticated" bypassing the need for my personal consumer and consumer-secret keys.
The code below attempts to get the members of a list using this REST endpoint
let client = TWTRAPIClient()
let endpoint = "https://api.twitter.com/1.1/lists/members.json"
let params = ["owner_screen_name" : "palafo", "slug" : "breakingnews"]
var clientError : NSError?
let request = client.URLRequestWithMethod("GET", URL: endpoint, parameters: params, error: &clientError)
client.sendTwitterRequest(request) { (response, data, connectionError) -> Void in
if connectionError != nil {
print("Error: \(connectionError)")
}
do {
let json = try NSJSONSerialization.JSONObjectWithData(data!, options: [])
print("json: \(json)")
} catch let jsonError as NSError {
print("json error: \(jsonError.localizedDescription)")
}
}
Running that gives me this error:
Error Domain=TwitterAPIErrorDomain Code=220 "Request failed: forbidden (403)" UserInfo={NSLocalizedFailureReason=Twitter API error : Your credentials do not allow access to this resource (code 220), TWTRNetworkingStatusCode=403, NSErrorFailingURLKey=https://api.twitter.com/1.1/lists/members.json?owner_screen_name=palafo&slug=breakingnews, NSLocalizedDescription=Request failed: forbidden (403)})
If I change endpoint to instead get the statuses in that list using this other REST endpoint, I get a proper JSON response.
let endpoint = "https://api.twitter.com/1.1/lists/statuses.json"
Does this mean that Fabric's guest authentication does not allow me to get the members of a list?

Answer 1

I solved mine by using clientWithUserId instead of just initializing using just init.
NSString *userID = [Twitter sharedInstance].sessionStore.session.userID;
TWTRAPIClient *client = [[TWTRAPIClient alloc] initWithUserID:userID];