B4X

X.com App only authentication and OAuth 2.0 Bearer Token

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Demonstrates how to obtain an X.com OAuth2 token for application-only authentication.

This allows you to issue authenticated requests on behalf of the application itself (as opposed to on behalf of a specific user). You don’t have the context of an authenticated user and this means that any request to API for endpoints that require user context, such as posting Tweets, will not work.

Your app will be able to, for example:

• Pull user timelines;
• Access friends and followers of any account;
• Access lists resources;
• Search in Tweets;

And it will not be able to:

• Post Tweets or other resources;
• Connect to Streaming endpoints;
• Search for users;
• Use any geo endpoint;
• Access Direct Messages or account credentials;

B4X

Dim success As Boolean = False

'  It requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

'  Update these values with your consumer key and secret (also known as API Key and API Key Secret).
Dim consumerKey As String = "X_CONSUMER_KEY"
Dim consumerSecret As String = "X_CONSUMER_SECRET"

Dim http As ChilkatHttp
http.Initialize("http")

http.BasicAuth = True
http.Login = consumerKey
http.Password = consumerSecret

Dim req As ChilkatHttpRequest
req.Initialize
req.AddParam("grant_type", "client_credentials")

req.HttpVerb = "POST"
req.ContentType = "application/x-www-form-urlencoded"

Dim resp As ChilkatHttpResponse
resp.Initialize
success = http.HttpReq("https://api.x.com/oauth2/token", req, resp)
If success = False Then
    Log(http.LastErrorText)
    Return
End If


Log("Response Status Code: " & resp.StatusCode)

If resp.StatusCode <> 200 Then
    Log("Expected a 200 response status code for success.")
    Log(resp.BodyStr)
    Return
End If


'  We should get a JSON response like this:

'  {
'      "token_type":"bearer",
'      "access_token":"..."
'  }

Dim json As ChilkatJsonObject
json.Initialize
json.Load(resp.BodyStr)

Log("Access token = " & json.StringOf("access_token"))