Setting headers in Twitter API POST

Question

I am attempting to use the POST statuses/update Twitter API call. I'm new to this so please bear with me :). As outlined in this doc I've been trying to set up headers to use application only authentication.

What I have tried so far is as follows:

    $(".tweet-later").on("click", function(event){
    $.ajax({
         url: "https://api.twitter.com/1.1/statuses/update.json",
         data: { status: "Testing"},
         type: "POST",
         dataType: 'json',
         beforeSend: function(xhr){
           xhr.setRequestHeader('Authorization', 'Rm5DVHpIc2M2ejRpeDRQRDRdfdsjprbjB5TENzeEZQNnhza2NFMzB6dnJMbnI2aENlRUZSczdOZUtWZUhaREhXSFVCY3dQWA==');
           xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;charset=UTF-8');
         },
         success: function(data) { alert('Tweeted!'); },
        error:function(exception){alert('Exeption:'+exception);}
      });
  }); 

I keep receiving an error: "Authentication Failed".All help is very much appreciated.

Thank you very much in advance.

Answer 1

What you're trying to do is impossible.

As it says in the documentation :

When issuing requests using application-only auth, there is no concept of a “current user.” Therefore, endpoints such as POST statuses / update will not function with application-only auth. See using OAuth for more information for issuing requests on behalf of a user.