+ /*
+ * True if we're in the time range given by a previously
+ * received discarded events message. In this case,
+ * `beginning_cs` and `end_cs` below contain the
+ * beginning and end clock snapshots for this range.
+ *
+ * This is used to validate that, when receiving a
+ * packet end message, the current discarded events time
+ * range matches what's expected for CTF 1.8, that is:
+ *
+ * * Its beginning time is the previous packet's end
+ * time (or the current packet's beginning time if
+ * this is the first packet).
+ *
+ * * Its end time is the current packet's end time.
+ */