(Unicode C++) 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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#include <CkHttpRequestW.h>
#include <CkBinDataW.h>

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

    CkHttpRequestW req;
    req.put_HttpVerb(L"POST");
    req.put_ContentType(L"multipart/form-data");
    req.put_Path(L"/xyz/something");

    req.AddParam(L"param1",L"value1");
    req.AddParam(L"param2",L"value2");

    // Add some small files to the request. (Small so we can see what the full request looks like without too much data..)
    CkBinDataW bd;
    bool success = bd.LoadFile(L"qa_data/jpg/starfish20.jpg");
    req.AddBdForUpload(L"starfish20",L"starfish20.jpg",bd,L"image/jpeg");

    success = bd.LoadFile(L"qa_data/pdf/helloWorld.pdf");
    req.AddBdForUpload(L"helloWorld",L"helloWorld.pdf",bd,L"application/pdf");

    success = bd.LoadFile(L"qa_data/xml/tinyA.xml");
    req.AddBdForUpload(L"tinyA",L"tinyA.xml",bd,L"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(L"qa_output/multipartFormDataRequest.bin");

    wprintf(L"OK.\n");

    // 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--
    // 
    }