C++

Add Data to multipart/form-data Request

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

#include <CkHttpRequest.h>
#include <CkBinData.h>

void ChilkatSample(void)
    {
    bool success = false;

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

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

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

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

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

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

    std::cout << "OK." << "\r\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--
    //
    }