(Swift 3,4,5...) WebDAV PROPFIND

Demonstrates how to send a WebDAV PROPFIND HTTP request.

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

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

    var success: Bool

    // The PROPFIND request to be sent will look similar to this:
    // This is from RFC 4918 at http://tools.ietf.org/html/rfc4918#section-9.1.3

    //      PROPFIND /file HTTP/1.1
    //      Host: www.example.com
    //      Content-type: application/xml; charset="utf-8"
    //      Content-Length: xxxx
    // 
    //      <?xml version="1.0" encoding="utf-8" ?>
    //      <D:propfind xmlns:D="DAV:">
    //        <D:prop xmlns:R="http://ns.example.com/boxschema/">
    //          <R:bigbox/>
    //          <R:author/>
    //          <R:DingALing/>
    //          <R:Random/>
    //        </D:prop>
    //      </D:propfind>

    // Build the HTTP request object. 

    // The HTTP verb should be "PROPFIND"
    req.httpVerb = "PROPFIND"

    // The Content-Type should be "application/xml", and
    // the charset attribute in the Content-Type header should
    // be utf-8:
    req.contentType = "application/xml"
    req.charset = "utf-8"
    req.sendCharset = true

    // Load the request body with the XML.  Your application 
    // is free to construct the XML using any means desired.
    // Once the XML is prepared, load it into the request body
    // like this:
    var xmlBody: String? = "This is the string that should contain the XML body..."
    success = req.loadBody(from: xmlBody, charset: "utf-8")
    if success != true {
        print("\(req.lastErrorText!)")
        return
    }

    // For this example, pretend the WEBDAV endpoint is:
    // https://webdav.chilkatstorage.com/

    // Note: There is no actual "chilkatstorage.com" site.  
    // This is only an example...

    // The "path" part of this endpoint URL is simply "/".

    // Send the request to the WebDAV endpoint using 
    // the SynchronousRequest method:
    var resp: CkoHttpResponse?

    resp = http.synchronousRequest("webdav.chilkatstorage.com", port: 443, ssl: true, req: req)
    if http.lastMethodSuccess == false {
        print("\(http.lastErrorText!)")
        return
    }

    // Get the XML response:
    var responseXml: String?
    responseXml = resp!.bodyStr
    print("XML Response: \(responseXml!)")

    // Get the response status code, such as 207
    var statusCode: Int
    statusCode = resp!.statusCode.intValue
    print("StatusCode = \(statusCode)")

    resp = nil

}