int CM_IsValidMsg (struct CtdlMessage *msg);
#define CM_KEY(Message, Which) Message->cm_fields[Which], Message->cm_lengths[Which]
+#define CM_RANGE(Message, Which) Message->cm_fields[Which], \
+ Message->cm_fields[Which] + Message->cm_lengths[Which]
void CtdlSerializeMessage(struct ser_ret *, struct CtdlMessage *);
void ReplicationChecks(struct CtdlMessage *);