Swift

Twitter - Application Only Authentication

Demonstrates how to get a Twitter OAuth2 token for application-only authentication.

This example is deprecated and no longer valid.

Swift

func chilkatTest() {
    var success: Bool = false

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

    // Note: Define your Twitter apps at https://apps.twitter.com/

    // We're going to send an HTTPS POST that looks like this:

    // POST /oauth2/token HTTP/1.1
    // Host: api.twitter.com
    // User-Agent: My Twitter App v1.0.23
    // Authorization: Basic eHZ6MWV2RlM0d0VFUFRHRUZQSEJvZzpMOHFxOVBaeVJn
    //                      NmllS0dFS2hab2xHQzB2SldMdzhpRUo4OERSZHlPZw==
    // Content-Type: application/x-www-form-urlencoded;charset=UTF-8
    // Content-Length: 29
    // Accept-Encoding: gzip
    // 
    // grant_type=client_credentials

    // Update these values with your consumer key and secret (also known as API key and API secret).
    var consumerKey: String? = "TWITTER_CONSUMER_KEY"
    var consumerSecret: String? = "TWITTER_CONSUMER_SECRET"

    let http = CkoHttp()!

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

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

    req.httpVerb = "POST"
    req.contentType = "application/x-www-form-urlencoded"

    let resp = CkoHttpResponse()!
    success = http.httpReq(url: "https://api.twitter.com/oauth2/token", request: req, response: resp)
    if success == false {
        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(json: resp.bodyStr)

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

}