fprintf(stderr, "   WARNING: might be a security problem!\n");
 }
 
+#if 0
+static void log_function_gnutls(int level, const char *string) {
+    (void)level;
+    fprintf(stderr, "    => %s", string);
+}
+#endif
+
 static void initialize_gnutls(void) {
     int result;
 /* Recent versions of GnuTLS automatically initialize the cryptography layer
     result = gnutls_global_init();
     GNUTLS_ERROR_EXIT(result, "gnutls_global_init()");
 
+#if 0
+    gnutls_global_set_log_level(10);
+    gnutls_global_set_log_function(log_function_gnutls);
+#endif
+
     /* Setup GnuTLS cipher suites. */
     result = gnutls_priority_init(&global_tls_priority_cache, "NORMAL", NULL);
     GNUTLS_ERROR_EXIT(result, "gnutls_priority_init()");
 
 static int connect_to_host(const char *hostname, const char *port);
 static int read_http_request(FILE *client_fd, char *request, size_t length);
 
+#if 0
+static void log_function_gnutls(int level, const char *string) {
+    (void)level;
+    fprintf(stderr, "    => %s", string);
+}
+#endif
 
 int main (int argc, char *argv[]) {
     int result, response;
     gnutls_global_init();
     gnutls_certificate_allocate_credentials(&xcred);
 
+#if 0
+    gnutls_global_set_log_level(10);
+    gnutls_global_set_log_function(log_function_gnutls);
+#endif
+
     gnutls_certificate_set_x509_trust_file(xcred,
                                            argv[1], GNUTLS_X509_FMT_PEM);