Frank, On Thu, 26 Apr 2001, Frank Bohnsack wrote:
it seems that the new whois client doesn't support the -k option (open/close session (persistent connection)).
after a query the connection is holding but the 'client' get no feedback after new queries.
i tried this by 'telnet whois.ripe.net 43' and it's works fine.
any comments ?!
Currently if you send a query over a persistent (-k) connection before waiting for a response from the server, the server closes your connection. Correct query process is query/response: server: wait for query client: send query client: wait for reply server: send reply server: wait for reply cilent: send query . . . If you try to send multiple queries, it doesn't work: server: wait for query client: send query client: send query server: abort We realize this is inefficient in some cases, and will be updating the server in the future to allow "pipelined" queries. Note that even though we will be supporting this, it is still dangerous for clients to act this way, as you can end up with a deadlock if the input buffer fills on the Whois server when it is trying to send a reply to the client. Since Whois queries are so small, this will rarely be a problem, but pipelined clients should still be written with caution. -- Shane