+ /**
+ * Initialization for validation throttling
+ *
+ * We have a maximum number max_fds of connections we can use for validation
+ * We monitor the number of validations in parallel and start to throttle it
+ * when doing to many validations in parallel:
+ * if (running validations < (max_fds / 2))
+ * - "fast start": run validation immediately
+ * - have delay of (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value) / (max_fds / 2)
+ * (300 sec / ~150 == ~2 sec.) between two validations
+ */
+