libCURL Multipart POST with a large file

Asked Aug 26 '12 at 15:28

Active Aug 26 '12 at 15:28

Viewed 1,366 times

I need to upload a large file (>2 GB) using multipart POST request. Source file can be named using unicode symbols. The problem is that libcurl does not support unicode wfopen in windows, so I am not able to complete this task in usual way like

curl_formadd(&formpost, &lastptr,
  CURLFORM_COPYNAME, fieldname,
  CURLFORM_FILENAME, filename,
  CURLFORM_FILE, full_path_to_file,
  CURLFORM_CONTENTTYPE, "application/octet-stream",
  CURLFORM_END);

I figured out that I can use a CURLFORM_STREAM option of curl_formadd in conjunction with CURLOPT_READFUNCTION. Now I need to manually set the file size through CURLFORM_CONTENTSLENGTH option, but it accepts only "long" as a parameter when I need to set a "long long" file size. After a look through curl manual I found some CURLOPT_POSTFIELDSIZE_LARGE option, but it does nothing in my case. It seems that multipart request system ignores this parameter. I don't know what to do, I don't want to give up unicode names or large files support.

asked Aug 26 '12 at 15:28

Bronson

I would suggest you roll up your sleeves and consider which source code change that would give you the feature the best way, then suggest that change to the libcurl team... – Daniel Stenberg Aug 28 '12 at 06:15
It seems this is the only way to make it work. – Bronson Aug 29 '12 at 07:27

libCURL Multipart POST with a large file

0 Answers0