curl/docs/libcurl/curl_formfree.md

---

c: Copyright (C) Daniel Stenberg, daniel@haxx.se, et al. SPDX-License-Identifier: curl Title: curl_formfree Section: 3 Source: libcurl See-also:

• curl_formadd (3)
• curl_mime_free (3)
• curl_mime_init (3) Protocol:
• HTTP Added-in: 7.1 ---

NAME

curl_formfree - free a previously build multipart form post chain

SYNOPSIS

#include <curl/curl.h>

void curl_formfree(struct curl_httppost *form);

DESCRIPTION

This function is deprecated. Do not use. See curl_mime_init(3) instead!

curl_formfree() is used to clean up data previously built/appended with curl_formadd(3). This must be called when the data has been used, which typically means after curl_easy_perform(3) has been called.

The pointer to free is the same pointer you passed to the CURLOPT_HTTPPOST(3) option, which is the firstitem pointer from the curl_formadd(3) invoke(s).

form is the pointer as returned from a previous call to curl_formadd(3) and may be NULL.

Passing in a NULL pointer in form makes this function return immediately with no action.

%PROTOCOLS%

EXAMPLE

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    struct curl_httppost *formpost;
    struct curl_httppost *lastptr;

    /* Fill in a file upload field */
    curl_formadd(&formpost,
                 &lastptr,
                 CURLFORM_COPYNAME, "file",
                 CURLFORM_FILE, "nice-image.jpg",
                 CURLFORM_END);

    curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);

    curl_easy_perform(curl);

    /* then cleanup the formpost chain */
    curl_formfree(formpost);
  }
}

DEPRECATED

Deprecated in 7.56.0.

%AVAILABILITY%

RETURN VALUE

None