curl_formget(3)

curl_formget(3)          libcurl Manual           curl_formget(3)

NAME

     curl_formget    -    serialize    a     previously     built
     multipart/formdata HTTP POST chain

SYNOPSIS

     #include <curl/curl.h>

     int curl_formget(struct curl_httppost * form, void *userp,
                       curl_formget_callback append );

DESCRIPTION

     curl_formget()  is  used  to   serialize   data   previously
     built/appended  with curl_formadd(3). Accepts a void pointer
     as second argument named userp which will be passed  as  the
     first argument to the curl_formget_callback function.

     typedef size_t (*curl_formget_callback)(void  *userp,  const
     char *buf,  size_t len);

     The curl_formget_callback will be executed for each part  of
     the  HTTP  POST  chain.  The  character buffer passed to the
     callback must not be freed. The callback should  return  the
     buffer length passed to it on success.

     If the CURLFORM_STREAM option is used in  the  formpost,  it
     will  prevent curl_formget(3) from working until you've per-
     formed the actual HTTP request as only then will libcurl get
     the actual read callback to use!

RETURN VALUE

     0 means everything was ok, non-zero means an error occurred

EXAMPLE

      size_t print_httppost_callback(void *arg, const char *buf, size_t len)
      {
        fwrite(buf, len, 1, stdout);
        (*(size_t *) arg) += len;
        return len;
      }

      size_t print_httppost(struct curl_httppost *post)
      {
        size_t total_size = 0;
        if(curl_formget(post, &total_size, print_httppost_callback)) {
          return (size_t) -1;
        }
        return total_size;
      }

AVAILABILITY

     This function was added in libcurl 7.15.5. The form  API  is
     deprecated in libcurl 7.56.0.

libcurl 7.58.0   Last change: September 02, 2017                1

curl_formget(3)          libcurl Manual           curl_formget(3)

SEE ALSO

     curl_formadd(3), curl_mime_init(3)

libcurl 7.58.0   Last change: September 02, 2017                2