-/* Sends 'b' on 'rc'. Returns 0 if successful (in which case 'b' is
- * destroyed), or ENOTCONN if 'rc' is not currently connected (in which case
- * the caller retains ownership of 'b').
+/* Sends 'b' on 'rc'. Returns 0 if successful, or ENOTCONN if 'rc' is not
+ * currently connected. Takes ownership of 'b'.