The client server protocol lacks support for many basic operations, like search. It's a late addition to the spec, because somebody felt a server protocol shoul

The client server protocol lacks support for many basic operations, like search. It's a late addition to the spec, because somebody felt a server protocol shouldn't be released without a client protocol. Swap the polarity of the inbox and outbox, and presto you've got a client protocol. Except clients don't want to talk to servers the same way servers talk to other servers.