CURLOPT_HTTPPOST - Man Page

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HTTPPOST,
                          struct curl_httppost *formpost);

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.

NULL

HTTP

/* 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);

As long as HTTP is enabled. Deprecated in 7.56.0.

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

CURLOPT_POSTFIELDS(3), CURLOPT_POST(3), CURLOPT_MIMEPOST(3), curl_formadd(3), curl_formfree(3), curl_mime_init(3)

curl_easy_setopt(3), curl_formadd(3), curl_formfree(3), CURLOPT_EXPECT_100_TIMEOUT_MS(3), CURLOPT_MIME_OPTIONS(3), CURLOPT_MIMEPOST(3), CURLOPT_POST(3), libcurl-tutorial(3).