(C++) Add Parameters to Multipart Form-Data POSTs

Parameters (name=value) can be added to multipart/form-data POSTs (such as for file uploads) by using the AddParam method. This example sends the following HTTP POST

POST /something HTTP/1.1
Content-Type: multipart/form-data; boundary=------------010201080703010401070605
Host: domain
Content-Length: 560

--------------010201080703010401070605
Content-Disposition: form-data; name="name"

Joe
--------------010201080703010401070605
Content-Disposition: form-data; name="age"

25
--------------010201080703010401070605
Content-Disposition: form-data; name="fileA"; filename="fileA.txt"
Content-Type: text/plain

This is the contents of file A
--------------010201080703010401070605
Content-Disposition: form-data; name="fileB"; filename="fileB.txt"
Content-Type: text/plain

This is the contents of file B
--------------010201080703010401070605--

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#include <CkHttpRequest.h>

void ChilkatSample(void)
    {
    CkHttpRequest req;

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

    req.AddParam("name","Joe");
    req.AddParam("age","25");

    req.AddStringForUpload("fileA","fileA.txt","This is the contents of file A","utf-8");
    req.AddStringForUpload("fileB","fileB.txt","This is the contents of file B","utf-8");

    std::cout << req.generateRequestText() << "\r\n";
    }