Getting "Remote server returned an error: (403) forbidden" on Twitter auth using OAuth1Authenticator

ashiisht

//Twitter with OAuth1
var auth = new OAuth1Authenticator(
consumerKey: "using twitter Consumer API keys",
consumerSecret: "using twitter Consumer API secret keys",
requestTokenUrl: new Uri("https://api.twitter.com/oauth/request_token"),
authorizeUrl: new Uri("https://api.twitter.com/oauth/authorize"),
accessTokenUrl: new Uri("https://api.twitter.com/oauth/access_token"),
callbackUrl: new Uri("http://www.website.com.")
);

            auth.AllowCancel = true;
            // auth.ShowUIErrors = false;
            // If authorization succeeds or is canceled, .Completed will be fired.
            auth.Completed += (s, eventArgs) =>
            {
                // We presented the UI, so it's up to us to dismiss it.
                if (eventArgs.IsAuthenticated)
                {
                    //Utilities.userDetailsTW = new UserDetailsTW();
                    //Utilities.userDetailsTW.Token = eventArgs.Account.Properties["oauth_token"];
                    //Utilities.userDetailsTW.TokenSecret = eventArgs.Account.Properties["oauth_token_secret"];
                    //Utilities.userDetailsTW.TwitterId = eventArgs.Account.Properties["user_id"];
                    //Utilities.userDetailsTW.Name = eventArgs.Account.Properties["screen_name"];
                    //AccountStore.Create().Save(eventArgs.Account, "Twitter");
                }
                else    
                {
                    Console.WriteLine("failed");
                }
            };

RobertHellestrae

Any feedback on this issue - encountering identical error;

ashiisht

Hi, @RobertHellestrae you have to the same callback URL at both sides in the app created on a Twitter developer account and in you mobile app code.

//Twitter with OAuth1
var auth = new OAuth1Authenticator(
consumerKey: "< your app consumer key>",
consumerSecret: "",
requestTokenUrl: new Uri("https://api.twitter.com/oauth/request_token"),
authorizeUrl: new Uri("https://api.twitter.com/oauth/authorize"),
accessTokenUrl: new Uri("https://api.twitter.com/oauth/access_token"),
callbackUrl: new Uri("http://mobile.twitter.com/home")
);

I hope this will fix the issue.

RobertHellestrae

great - thanks much; later today, I can try to make adjustments;

RobertHellestrae

Update: modified callback URL from http://mobile.twitter.com/home to https://mobile.twitter.com/home;

Making progress...

Authenticate screen of Twitter displays correctly with above callback URL adjustment - and includes details from Twitter Developer app, etc;

However, after entering username and password - following popup message displays:

"Authentication.Error
e.Message = The resource could not be loaded because the App Transport Security policy requires the use of a secure connection."

ashiisht

@RobertHellestrae, this issue usually comes in iOS app. you have to add the below keys in your info.plist file of the iOS project.

And then clean and build the project.

RobertHellestrae

thanks - issue resolved;

DeanZhuo

I got an error when cancelling authenticate the user. It works fine if I completed the login. Can anyone tell me why?

System.AggregateException: 'One or more errors occurred. (The remote server returned an error: (401) Authorization Required.)'