(Swift 3,4,5...) AzureWebsites OAuth2 Password Flow

Demonstrates how to do OAuth 2.0 password flow for azurewebsites.net.

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.

    let http = CkoHttp()!
    var success: Bool

    let req = CkoHttpRequest()!
    req.httpVerb = "POST"
    req.path = "/token"
    req.contentType = "application/x-www-form-urlencoded"
    req.addParam("grant_type", value: "password")
    req.addParam("username", value: "your_username")
    req.addParam("password", value: "your_password")

    var tokenEndpoint: String? = "https://your_api.azurewebsites.net/token"
    var resp: CkoHttpResponse? = http.postUrlEncoded(tokenEndpoint, req: req)
    if http.lastMethodSuccess == false {
        print("\(http.lastErrorText!)")
        return
    }

    let sbResponseBody = CkoStringBuilder()!
    resp!.getBodySb(sbResponseBody)
    let jResp = CkoJsonObject()!
    jResp.loadSb(sbResponseBody)
    jResp.emitCompact = false

    print("Response Body:")
    print("\(jResp.emit()!)")

    // Sample JSON response:

    // {
    //   "access_token": "NQGHn ... xTS",
    //   "token_type": "bearer",
    //   "expires_in": 1209599,
    //   "userName": "your_username",
    //   ".issued": "Mon, 27 Apr 2020 23:49:35 GMT",
    //   ".expires": "Mon, 11 May 2020 23:49:35 GMT"
    // }

    var respStatusCode: Int = resp!.statusCode.intValue
    print("Response Status Code = \(respStatusCode)")
    if respStatusCode >= 400 {
        print("Response Header:")
        print("\(resp!.header!)")
        print("Failed.")
        resp = nil
        return
    }

    resp = nil

    // ----------------------------------
    // Use the OAuth2 token in a request.
    // For example...

    let sbXml = CkoStringBuilder()!
    success = sbXml.loadFile("c:/someDir/someXmlFile.xml", charset: "utf-8")
    if success == false {
        print("Failed to load the XML file.")
        return
    }

    // Get the OAuth2 token and use it for authentication
    http.authToken = jResp.string(of: "token")

    var destUrl: String? = "https://your_api.azurewebsites.net/destinationUrl"
    resp = http.postXml(destUrl, xmlDoc: sbXml.getAsString(), charset: "utf-8")
    if http.lastMethodSuccess == false {
        print("\(http.lastErrorText!)")
        return
    }

    respStatusCode = resp!.statusCode.intValue
    print("Response Status Code = \(respStatusCode)")
    if respStatusCode >= 400 {
        print("Response Header:")
        print("\(resp!.header!)")
        print("Failed.")
        resp = nil
        return
    }

    // Examine the response body
    print("\(resp!.bodyStr!)")

    resp = nil

}