Manpages - curl_mime_headers.3

curl_mime_headers - set a mime part’s custom headers

#include <curl/curl.h>

CURLcode curl_mime_headers(curl_mimepart * */part/,* struct curl_slist * */headers/, int take_ownership);*

curl_mime_headers(3) sets a mime part’s custom headers.

part is the part’s handle to assign the custom headers list to.

headers is the head of a list of custom headers; it may be set to NULL to remove a previously attached custom header list.

take_ownership: when non-zero, causes the list to be freed upon replacement or mime structure deletion; in this case the list must not be freed explicitly.

Setting a part’s custom headers list twice is valid: only the value set by the last call is retained.

   struct curl_slist *headers = NULL;

   headers = curl_slist_append(headers, "Custom-Header: mooo");

   /* use these headers, please take ownership */
   curl_mime_headers(part, headers, TRUE);

   /* pass on this data */
   curl_mime_data(part, "12345679", CURL_ZERO_TERMINATED);

   /* set name */
   curl_mime_name(part, "numbers");

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

CURLE_OK or a CURL error code upon failure.

*curl_mime_addpart*(3)