curl_formfree(3) Introduction to Library Functions curl_formfree(3)

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


This functionality affects http only

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


Added in curl 7.1

RETURN VALUE


None

SEE ALSO


curl_formadd(3), curl_mime_free(3), curl_mime_init(3)

libcurl 2025-02-25 curl_formfree(3)

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