(Swift) X.com App only authentication and OAuth 2.0 Bearer Token

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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;

For more information, see https://docs.x.com/resources/fundamentals/authentication/oauth-2-0/application-only

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // 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).
    var consumerKey: String? = "X_CONSUMER_KEY"
    var consumerSecret: String? = "X_CONSUMER_SECRET"

    let http = CkoHttp()!

    http.basicAuth = true
    http.login = consumerKey
    http.password = consumerSecret

    let req = CkoHttpRequest()!
    req.addParam("grant_type", value: "client_credentials")

    var resp: CkoHttpResponse? = http.postUrlEncoded("https://api.x.com/oauth2/token", req: req)
    if http.lastMethodSuccess != true {
        print("\(http.lastErrorText!)")
        return
    }

    print("Response Status Code: \(resp!.statusCode.intValue)")

    if resp!.statusCode.intValue != 200 {
        print("Expected a 200 response status code for success.")
        print("\(resp!.bodyStr!)")
        return
    }

    // We should get a JSON response like this:

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

    let json = CkoJsonObject()!
    json.load(resp!.bodyStr)

    print("Access token = \(json.string(of: "access_token")!)")

    resp = nil

}