On Sun, 1 Jul 2007, Allen Pulsifer wrote:

> Have you tried simply setting those two headers, using something like:
>
> struct curl_slist *headers;
>
> headers = curl_slist_append(headers, "Content-Disposition: form-data;
> name=\"upload_file\"; filename=\"filename.torrent\"");
> headers = curl_slist_append(headers, "Content-Type:
> application/octet-stream");
> curl_easy_setopt(easyhandle, CURLOPT_HTTPHEADER, headers);

That won't work at all, since this will add the headers to the request while
Carter wants to modify the header(s) for the specific formpart with the
"attached" file.

CURLFORM_FILENAME is what should be used, as Robert already hinted.

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