Linq to Twitter - Bad Authentication data - twitter

Question

I've the the latest version of Linq to Twitter (3.1.2), and I'm receiving the "Bad Authentication data" error with the code below:
var auth = new ApplicationOnlyAuthorizer
{
CredentialStore = new InMemoryCredentialStore
{
ConsumerKey = "xxxx",
ConsumerSecret = "xxxx"
}
};
using (var twitter = new TwitterContext(auth))
{
var users = twitter.User.Where(s => s.Type == UserType.Search && s.Query == "filter:verified").ToList();
}
I thought at first that it could be Twitter taking a while to accept my new credentials, but I used Twitter's OAuth tool with my keys, and they produced tokens without issue. Any ideas what I'm missing here?
I could not find a duplicate, as the code referenced # https://stackoverflow.com/questions/16387037/twitter-api-application-only-authentication-with-linq2twitter#= is no longer valid in the version I am running.

Answer 1

That query doesn't support Application-Only authorization. Here's the Twitter docs to that:
https://dev.twitter.com/rest/reference/get/users/search
Instead, you can use SingleUserAuthorizer, documented here:
https://github.com/JoeMayo/LinqToTwitter/wiki/Single-User-Authorization
Like this:
var auth = new SingleUserAuthorizer
{
CredentialStore = new SingleUserInMemoryCredentialStore
{
ConsumerKey = ConfigurationManager.AppSettings["consumerKey"],
ConsumerSecret = ConfigurationManager.AppSettings["consumerSecret"],
AccessToken = ConfigurationManager.AppSettings["accessToken"],
AccessTokenSecret = ConfigurationManager.AppSettings["accessTokenSecret"]
}
};
To find out what type of authorization is possible, you can visit the L2T wiki at:
https://github.com/JoeMayo/LinqToTwitter/wiki
and each API query and command has a link at the bottom of the page to the corresponding Twitter API documentation.