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.\" generated by cd2nroff 0.1 from CURLOPT_HTTPPOST.md
.TH CURLOPT_HTTPPOST 3 "2025-06-27" libcurl
.SH NAME
CURLOPT_HTTPPOST \- multipart formpost content
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HTTPPOST,
struct curl_httppost *formpost);
.fi
.SH DESCRIPTION
\fBThis option is deprecated.\fP Use \fICURLOPT_MIMEPOST(3)\fP instead.
Tells libcurl you want a \fBmultipart/formdata\fP HTTP POST to be made and you
instruct what data to pass on to the server in the \fIformpost\fP argument.
Pass a pointer to a linked list of \fIcurl_httppost\fP structs as parameter.
The easiest way to create such a list, is to use \fIcurl_formadd(3)\fP 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 \fICURLOPT_HTTPHEADER(3)\fP.
When setting \fICURLOPT_HTTPPOST(3)\fP, libcurl automatically sets
\fICURLOPT_NOBODY(3)\fP to 0.
.SH DEFAULT
NULL
.SH PROTOCOLS
This functionality affects http only
.SH EXAMPLE
.nf
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);
}
.fi
.SH DEPRECATED
Deprecated in 7.56.0.
.SH AVAILABILITY
Added in curl 7.1
.SH RETURN VALUE
\fIcurl_easy_setopt(3)\fP returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
\fIlibcurl\-errors(3)\fP.
.SH SEE ALSO
.BR CURLOPT_MIMEPOST (3),
.BR CURLOPT_POST (3),
.BR CURLOPT_POSTFIELDS (3),
.BR curl_formadd (3),
.BR curl_formfree (3),
.BR curl_mime_init (3)