xref: /aosp_15_r20/external/curl/docs/libcurl/opts/CURLOPT_HTTPPOST.md (revision 6236dae45794135f37c4eb022389c904c8b0090d)

---
c: Copyright (C) Daniel Stenberg, <[email protected]>, et al.
SPDX-License-Identifier: curl
Title: CURLOPT_HTTPPOST
Section: 3
Source: libcurl
Protocol:
  - HTTP
See-also:
  - CURLOPT_MIMEPOST (3)
  - CURLOPT_POST (3)
  - CURLOPT_POSTFIELDS (3)
  - curl_formadd (3)
  - curl_formfree (3)
  - curl_mime_init (3)
Added-in: 7.1
---

# 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%

# 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);
}
~~~

# DEPRECATED

Deprecated in 7.56.0.

# %AVAILABILITY%

# RETURN VALUE

Returns CURLE_OK if HTTP is enabled, and CURLE_UNKNOWN_OPTION if not.