(Swift 2) Add Data to multipart/form-data Request

Demonstrates how to add content (such as a JPG, PDF, XML, etc.) to multipart/form-data requests.

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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()
    req.HttpVerb = "POST"
    req.ContentType = "multipart/form-data"
    req.Path = "/xyz/something"

    req.AddParam("param1", value: "value1")
    req.AddParam("param2", value: "value2")

    // Add some small files to the request. (Small so we can see what the full request looks like without too much data..)
    let bd = CkoBinData()
    var success: Bool = bd.LoadFile("qa_data/jpg/starfish20.jpg")
    req.AddBdForUpload("starfish20", remoteFilename: "starfish20.jpg", byteData: bd, contentType: "image/jpeg")

    success = bd.LoadFile("qa_data/pdf/helloWorld.pdf")
    req.AddBdForUpload("helloWorld", remoteFilename: "helloWorld.pdf", byteData: bd, contentType: "application/pdf")

    success = bd.LoadFile("qa_data/xml/tinyA.xml")
    req.AddBdForUpload("tinyA", remoteFilename: "tinyA.xml", byteData: bd, contentType: "text/xml")

    // This HTTP request contains binary data, so we cannot call GenerateRequestText
    // to examine it as a string.  We can instead call GenerateRequestFile
    // to write the request to a file and then examine using a hex editor,
    // or an editor that is capable of handling null bytes and non-printable chars (perhaps by displaying "?" chars instead).
    req.GenerateRequestFile("qa_output/multipartFormDataRequest.bin")

    print("OK.")

    // This is the HTTP multipart/form-data request built by the above code:

    // POST /xyz/something HTTP/1.1
    // Host: domain
    // Content-Type: multipart/form-data; boundary=------------090708030009010000030901
    // Content-Length: 2220
    // 
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="param1"
    // 
    // value1
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="param2"
    // 
    // value2
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="starfish20"; filename="starfish20.jpg"
    // Content-Type: image/jpeg
    // 
    // JPEG DATA HERE...
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="helloWorld"; filename="helloWorld.pdf"
    // Content-Type: application/pdf
    // 
    // PDF DATA HERE...
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="tinyA"; filename="tinyA.xml"
    // Content-Type: text/xml
    // 
    // XML DATA HERE...
    // --------------090708030009010000030901--
    // 

}