curl_mime_init man page

curl_mime_init ā€” create a mime handle


#include <curl/curl.h>

curl_mime * curl_mime_init(CURL * easy_handle);


curl_mime_init(3) creates a handle to a new empty mime structure intended to be used with easy_handle. This mime structure can be subsequently filled using the mime API, then attached to easy_handle using option CURLOPT_MIMEPOST(3) within a curl_easy_setopt(3) call.

Using a mime handle is the recommended way to post an HTTP form, format and send a multi-part e-mail with SMTP or upload such an e-mail to an IMAP server.


As long as at least one of HTTP, SMTP or IMAP is enabled. Added in 7.56.0.

Return Value

A mime struct handle, or NULL upon failure.


 CURL *easy = curl_easy_init();
 curl_mime *mime;
 curl_mimepart *part;

 /* Build an HTTP form with a single field named "data", */
 mime = curl_mime_init(easy);
 part = curl_mime_addpart(mime);
 curl_mime_data(part, "This is the field data", CURL_ZERO_TERMINATED);
 curl_mime_name(part, "data");

 /* Post and send it. */
 curl_easy_setopt(easy, CURLOPT_MIMEPOST, mime);
 curl_easy_setopt(easy, CURLOPT_URL, "");

 /* Clean-up. */

See Also

curl_mime_addpart(3), curl_mime_free(3), CURLOPT_MIMEPOST(3)

Referenced By

curl_formadd(3), curl_formfree(3), curl_formget(3), curl_mime_addpart(3), curl_mime_free(3), curl_mime_subparts(3), CURLOPT_HTTPPOST(3), CURLOPT_MIMEPOST(3), libcurl-tutorial(3).

September 22, 2017 libcurl 7.57.0 libcurl Manual