C

HTTP Request Boundary Property

Explains and demonstrates the HTTP request Boundary property. For multipart HTTP requests, Chilkat auto-generates a boundary string when the Boundary property is left unset (or empty). For example:

POST /something HTTP/1.1
Content-Type: multipart/form-data; boundary=------------090207000006060206010508
Host: domain
Content-Length: 378

--------------090207000006060206010508
Content-Disposition: form-data; name="fileA"; filename="fileA.txt"
Content-Type: text/plain

This is the contents of file A
--------------090207000006060206010508
Content-Disposition: form-data; name="fileB"; filename="fileB.txt"
Content-Type: text/plain

This is the contents of file B
--------------090207000006060206010508--

If the Boundary property is set, then Chilkat uses it. For example, if the Boundary property is set to "ABC123HELLOWORLD"

POST /something HTTP/1.1
Content-Type: multipart/form-data; boundary=ABC123HELLOWORLD
Host: domain
Content-Length: 318

--ABC123HELLOWORLD
Content-Disposition: form-data; name="fileA"; filename="fileA.txt"
Content-Type: text/plain

This is the contents of file A
--ABC123HELLOWORLD
Content-Disposition: form-data; name="fileB"; filename="fileB.txt"
Content-Type: text/plain

This is the contents of file B
--ABC123HELLOWORLD--

C

#include <C_CkHttpRequest.h>

void ChilkatSample(void)
    {
    HCkHttpRequest req;

    req = CkHttpRequest_Create();

    CkHttpRequest_putHttpVerb(req,"POST");
    CkHttpRequest_putPath(req,"/something");
    CkHttpRequest_putContentType(req,"multipart/form-data");

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

    //  When the Boundary property is empty (has not yet been set)
    //  Chilkat auto-generates a random boundary for the request.
    //  This should almost always be sufficient.
    //  For example, one can see the generated boundary here:
    printf("%s\n",CkHttpRequest_generateRequestText(req));

    //  If the Boundary property is set to a specific string, then the
    //  request will use it:
    CkHttpRequest_putBoundary(req,"ABC123HELLOWORLD");
    printf("%s\n",CkHttpRequest_generateRequestText(req));


    CkHttpRequest_Dispose(req);

    }