curl_mime_type(3)          Library Functions Manual          curl_mime_type(3)

NAME
       curl_mime_type - set a mime part's content type

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_mime_type(curl_mimepart *part, const char *mimetype);

DESCRIPTION
       curl_mime_type(3) sets a mime part's content type.

       part is the part's handle to assign the content type to.

       mimetype points to the null-terminated file mime type string; it may be
       set to NULL to remove a previously attached mime type.

       The mime type string is copied into the part, thus the associated
       storage may safely be released or reused after call. Setting a part's
       type multiple times is valid: only the value set by the last call is
       retained.

       In the absence of a mime type and if needed by the protocol
       specifications, a default mime type is determined by the context:

       - If set as a custom header, use this value.

       - application/form-data for an HTTP form post.

       - If a remote filename is set, the mime type is taken from the filename
       extension, or application/octet-stream by default.

       - For a multipart part, multipart/mixed.

       - text/plain in other cases.

PROTOCOLS
       HTTP, IMAP and SMTP

EXAMPLE
       int main(void)
       {
         curl_mime *mime;
         curl_mimepart *part;

         CURL *curl = curl_easy_init();
         if(curl) {
           /* create a mime handle */
           mime = curl_mime_init(curl);

           /* add a part */
           part = curl_mime_addpart(mime);

           /* get data from this file */
           curl_mime_filedata(part, "image.png");

           /* content-type for this part */
           curl_mime_type(part, "image/png");

           /* set name */
           curl_mime_name(part, "image");
       }
       }

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

RETURN VALUE
       CURLE_OK or a CURL error code upon failure.

SEE ALSO
       curl_mime_addpart(3), curl_mime_data(3), curl_mime_name(3)

libcurl                          April 26 2024               curl_mime_type(3)