(Swift 3,4,5...) POST application/x-www-form-urlencoded using REST API

Demonstrates how to send a POST with query params (x-www-form-urlencoded) using the Chilkat REST object.

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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 rest = CkoRest()!

    // This example will send to https://www.chilkatsoft.com/echoPost.asp

    // Make the initial connection (without sending a request yet).
    var bTls: Bool = true
    var port: Int = 443
    var bAutoReconnect: Bool = true
    var success: Bool = rest.connect("www.chilkatsoft.com", port: port, tls: bTls, autoReconnect: bAutoReconnect)
    if success != true {
        print("\(rest.lastErrorText!)")
        return
    }

    // Provide query params.
    rest.addQueryParam("firstName", value: "John")
    rest.addQueryParam("lastName", value: "Doe")
    rest.addQueryParam("company", value: "Bisco Bits Ltd.")

    var responseStr: String? = rest.fullRequestFormUrlEncoded("POST", uriPath: "/echoPost.asp")
    if rest.lastMethodSuccess != true {
        print("\(rest.lastErrorText!)")
        return
    }

    // When successful, the response status code will equal 200.
    if rest.responseStatusCode.intValue != 200 {
        // Examine the request/response to see what happened.
        print("response status code = \(rest.responseStatusCode.intValue)")
        print("response status text = \(rest.responseStatusText!)")
        print("response header: \(rest.responseHeader!)")
        print("response body (if any): \(responseStr!)")
        print("---")
        print("LastRequestStartLine: \(rest.lastRequestStartLine!)")
        print("LastRequestHeader: \(rest.lastRequestHeader!)")
        return
    }

    print("\(responseStr!)")
    print("Success.")

}