Spring WebSocket UserDestinationMessageHandler sending message to unauthenticated user -

i using spring 4.1.6.release.

• an unauthenticated client subscribing "/user/topic/qqq".
• this converted /topic/qqq-user{sessionid}
• the server sends message user, following:

like:

.convertandsend("/topic/qqq-user{sessionid}", "message"); 

and works expected.

• but, when server tries send message

like:

.convertandsendtouser({sessionid}, "/topic/qqq", "message");

but not work, , results:

userdestinationmessagehandler: - no user destinations found /user/{sessionid}/topic/qqq 

the question is:

1. is not task of userdestinationmessagehandler converting destination /user/{sessionid}/topic/qqq /topic/qqq-user{sessionid} ?
2. if is, not working because client not authenticated?

thank you.

have tried just

.convertandsendtouser({sessionid},"/qqq", "message");

then client subscribe as:

client.subscribe("/user/{sessionid}/qqq", callback)