NAME

       curl_mime_filedata - set a mime part's body data from a file contents

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_mime_filedata(curl_mimepart *part,
                                   const char *filename);

DESCRIPTION

       curl_mime_filedata(3) sets a mime part's body content from the named file's contents. This
       is an alternative to curl_mime_data(3) for setting data to a mime part.

       part is the part's to assign contents to.

       filename points to the null-terminated file's path name. The pointer can be NULL to detach
       the  previous  part contents settings. Filename storage can be safely be reused after this
       call.

       As a side effect, the part's remote filename is set to the base name of the given filename
       if  it  is  a  valid  named file. This can be undone or overridden by a subsequent call to
       curl_mime_filename(3).

       The contents of the file is read during the file transfer in a streaming manner  to  allow
       huge  files  to  get transferred without using much memory. It therefore requires that the
       file is kept intact during the entire request.

       If the file size cannot be determined before actually reading it (such as for a  character
       device  or  named pipe), the whole mime structure containing the part is transferred using
       chunks by HTTP but is rejected by IMAP.

       Setting a part's contents multiple times is valid: only the value set by the last call  is
       retained.

PROTOCOLS

       This functionality affects 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);

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

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

AVAILABILITY

       Added in curl 7.56.0

RETURN VALUE

       CURLE_OK  or  a  CURL error code upon failure. CURLE_READ_ERROR is only an indication that
       the file is not yet readable: it can be safely ignored at this time, but the file must  be
       made readable before the pertaining easy handle is performed.

SEE ALSO

       curl_mime_addpart(3), curl_mime_data(3), curl_mime_filename(3), curl_mime_name(3)