-
-#define CONN_ISCLOSING 1U /* Conn_Close() already called */
-#define CONN_ISCONNECTING 2U /* connect() in progress */
-
+/*
+ * connection state flags. this is a bitmask -- all values must
+ * be unique and a power of two.
+ *
+ * If you introduce new ones in between, make sure to adjust all
+ * remaining ones.
+ */
+#define CONN_ISCLOSING 1 /* Conn_Close() already called */
+#define CONN_ISCONNECTING 2 /* connect() in progress */
+#define CONN_RFC1459 4 /* RFC 1459 compatibility mode */