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---
c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
SPDX-License-Identifier: curl
Title: CURLOPT_HTTPPOST
Section: 3
Source: libcurl
See-also:
- CURLOPT_MIMEPOST (3)
- CURLOPT_POST (3)
- CURLOPT_POSTFIELDS (3)
- curl_formadd (3)
- curl_formfree (3)
- curl_mime_init (3)
---
# NAME
CURLOPT_HTTPPOST - multipart formpost content
# SYNOPSIS
~~~c
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HTTPPOST,
struct curl_httppost *formpost);
~~~
# DESCRIPTION
**This option is deprecated.** Use CURLOPT_MIMEPOST(3) instead.
Tells libcurl you want a **multipart/formdata** HTTP POST to be made and you
instruct what data to pass on to the server in the *formpost* argument.
Pass a pointer to a linked list of *curl_httppost* structs as parameter.
The easiest way to create such a list, is to use curl_formadd(3) as
documented. The data in this list must remain intact as long as the curl
transfer is alive and is using it.
Using POST with HTTP 1.1 implies the use of a "Expect: 100-continue" header.
You can disable this header with CURLOPT_HTTPHEADER(3).
When setting CURLOPT_HTTPPOST(3), libcurl automatically sets
CURLOPT_NOBODY(3) to 0.
# DEFAULT
NULL
# PROTOCOLS
HTTP
# EXAMPLE
~~~c
int main(void)
{
struct curl_httppost *formpost;
struct curl_httppost *lastptr;
/* Fill in the file upload field. This makes libcurl load data from
the given file name when curl_easy_perform() is called. */
curl_formadd(&formpost,
&lastptr,
CURLFORM_COPYNAME, "sendfile",
CURLFORM_FILE, "postit2.c",
CURLFORM_END);
/* Fill in the filename field */
curl_formadd(&formpost,
&lastptr,
CURLFORM_COPYNAME, "filename",
CURLFORM_COPYCONTENTS, "postit2.c",
CURLFORM_END);
/* Fill in the submit field too, even if this is rarely needed */
curl_formadd(&formpost,
&lastptr,
CURLFORM_COPYNAME, "submit",
CURLFORM_COPYCONTENTS, "send",
CURLFORM_END);
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
curl_formfree(formpost);
}
~~~
# AVAILABILITY
As long as HTTP is enabled. Deprecated in 7.56.0.
# RETURN VALUE
Returns CURLE_OK if HTTP is enabled, and CURLE_UNKNOWN_OPTION if not.
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