(Swift) HTTP POST (Duplicate Simple HTML Form POST)

Demonstrates how to duplicate a simple HTML form POST.

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

    let req = CkoHttpRequest()
    let http = CkoHttp()

    var success: Bool

    //  This example simulates this FORM:
    //  <form action="echoPost.asp" method="post">
    //  First name: <input type="text" name="firstName"><br />
    //  Last name: <input type="text" name="lastName"><br />
    //  <input type="submit" value="Submit">
    //  </form>
    //  The online FORM is found at this URL:
    //  https://www.chilkatsoft.com/simpleForm.html

    //  Build an HTTP POST Request:
    req.HttpVerb = "POST"

    //  The FORM target is http://www.chilkatsoft.com/processPost.asp
    //  An easy way of filling out most of the HTTP request object
    //  is to call SetFromUrl:
    req.SetFromUrl("https://www.chilkatsoft.com/echoPost.asp")

    //  Send form params using application/x-www-form-urlencoded
    req.ContentType = "application/x-www-form-urlencoded"

    //  The only remaining task is to add the params to the
    //  HTTP request object:
    req.AddParam("firstName", value: "Matt")
    req.AddParam("lastName", value: "Jones")

    //  Send the HTTP POST and get the response.
    //  The POST is being sent to chilkatsoft.com, on port 443 (using TLS)
    var domain: String? = "chilkatsoft.com"
    var port: Int = 443
    var tls: Bool = true

    //  The HTTP POST is sent here:
    var resp: CkoHttpResponse? = http.SynchronousRequest(domain, port: port, ssl: tls, req: req)
    if http.LastMethodSuccess == false {
        print("\(http.LastErrorText)")
        return
    }

    //  Display the HTML source of the page returned.
    print("\(resp!.BodyStr)")

}