#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include "apps.h" /* needs to be included before the openssl headers! */
#include <openssl/e_os2.h>
-#include <openssl/bio.h>
-#include <openssl/ocsp.h>
-#include <openssl/txt_db.h>
#include <openssl/ssl.h>
-#include "apps.h"
+#include <openssl/err.h>
/* Maximum leeway in validity period: default 5 minutes */
#define MAX_VALIDITY_PERIOD (5 * 60)