**************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
**************************************************************************

CURLOPT_RANDOM_FILE - specify a source for random data #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RANDOM_FILE, char *path); Pass a char * to a null-terminated file name. The file might be used to read from to seed the random engine for SSL and more. The application does not have to keep the string around after setting this option. NULL, not used All

CURL *curl = curl_easy_init();
if(curl) {
 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
 curl_easy_setopt(curl, CURLOPT_RANDOM_FILE, "junk.txt");
 ret = curl_easy_perform(curl);
 curl_easy_cleanup(curl);
}

Always Returns CURLE_OK on success or CURLE_OUT_OF_MEMORY if there was insufficient heap space. CURLOPT_EGDSOCKET "(3), "