Added CURLOPT_POSTFIELDSIZE_LARGE to offer a large file version of the

CURLOPT_POSTFIELDSIZE option to allow really big HTTP POSTs.

lib/url.c

@@ -782,11 +782,18 @@ CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option, ...)
     break;
   case CURLOPT_POSTFIELDSIZE:
     /*
-     * The size of the POSTFIELD data, if curl should now do a strlen
-     * to find out. Enables binary posts.
+     * The size of the POSTFIELD data to prevent libcurl to do strlen() to
+     * figure it out. Enables binary posts.
      */
     data->set.postfieldsize = va_arg(param, long);
     break;
+  case CURLOPT_POSTFIELDSIZE_LARGE:
+    /*
+     * The size of the POSTFIELD data to prevent libcurl to do strlen() to
+     * figure it out. Enables binary posts.
+     */
+    data->set.postfieldsize = va_arg(param, curl_off_t);
+    break;
   case CURLOPT_REFERER:
     /*
      * String to set in the HTTP Referer: field.

lib/urldata.h

@@ -780,9 +780,9 @@ struct UserDefined {
   char *useragent;   /* User-Agent string */
   char *encoding;    /* Accept-Encoding string */
   char *postfields;  /* if POST, set the fields' values here */
-  size_t postfieldsize; /* if POST, this might have a size to use instead of
-                           strlen(), and then the data *may* be binary (contain
-                           zero bytes) */
+  curl_off_t postfieldsize; /* if POST, this might have a size to use instead
+                               of strlen(), and then the data *may* be binary
+                               (contain zero bytes) */
   char *ftpport;     /* port to send with the FTP PORT command */
   char *device;      /* network interface to use */
   curl_write_callback fwrite;        /* function that stores the output */