CURLOPT_RANDOM_FILE(3) Library Functions Manual CURLOPT_RANDOM_FILE(3)

CURLOPT_RANDOM_FILE - file to read random data from

#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RANDOM_FILE, char *path);

Deprecated option. It serves no purpose anymore.

Pass a char pointer to a null-terminated filename. 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 TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

This option works only with the following TLS backends: OpenSSL

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

Only with OpenSSL versions before 1.1.0.

This option was deprecated in 7.84.0.

Returns CURLE_OK on success or CURLE_OUT_OF_MEMORY if there was insufficient heap space.

CURLOPT_EGDSOCKET(3)

April 02 2024 libcurl