(Swift 3,4,5...) Okta: Refresh Access Token with the Auth Code Flow

Demonstrates how to refresh a token that was obtained using the authorization code flow.

For more information, see https://developer.okta.com/docs/guides/implement-auth-code-pkce/use-flow/

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

func chilkatTest() {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // See Get Okta Access Token using Authorization Code Flow with PKCE 
    // for sample code showing how to obtain an Okta access token using the authorization code flow for native apps (with PKCE).

    let jsonToken = CkoJsonObject()!
    var success: Bool = jsonToken.loadFile("qa_data/tokens/okta.json")
    if success != true {
        print("Failed to load myob.json")
        return
    }

    let oauth2 = CkoOAuth2()!

    oauth2.tokenEndpoint = "https://{yourOktaDomain}/oauth2/default/v1/token"

    // Replace these with actual values.
    oauth2.clientId = "OKTA_CLIENT_ID"
    oauth2.clientSecret = "OKTA_CLIENT_SECRET"

    // Get the "refresh_token"
    oauth2.refreshToken = jsonToken.string(of: "refresh_token")

    // Send the HTTP POST to refresh the access token..
    oauth2.verboseLogging = true
    success = oauth2.refreshAccessToken()
    if success != true {
        print("\(oauth2.lastErrorText!)")
        return
    }

    // Load the access token response into the json object 
    jsonToken.load(oauth2.accessTokenResponse)

    // Save the new JSON access token response to a file.
    // The access + refresh tokens contained in this JSON will be needed for the next refresh.
    let sbJson = CkoStringBuilder()!
    jsonToken.emitCompact = false
    jsonToken.emitSb(sbJson)
    sbJson.writeFile("qa_data/tokens/okta.json", charset: "utf-8", emitBom: false)

    print("OAuth2 authorization granted!")
    print("New Access Token = \(oauth2.accessToken!)")

}