- From: <wald@library.ho.lucent.com>
- Date: Mon, 8 Jan 2001 09:58:52 -0500 (EST)
- To: www-zig@w3.org
Coming out of the ZIG meeting decided it was time to propose this; that
is make the init PDU optional.
why: two reasons.
1. by far the main one is that it would allow a good quality Z39.50
session to be done in one round trip. THat is, a search PDU to
the server, and a search response with piggy-backed results.
Note this would closely resemble an HTTP search, but with a
high quality search and retrieval specification.
2. the second reason is minor, and it is that it is not needed for
many (all?) sessions - and is yet another hold on to "older"/OSI
thinking. I believe by the way (but no assurances) that my server
does not require an init - but certainly might break it.
Note this change requires little or no change to the actual protocol -
the one curious question is what a server that requires an init does when
it receives a search PDU without an init? Choices I can think of are:
1. send an init failure PDU
2. send a search failure PDU
3. Be a good OSI implementation and shut down.
4. Or I sort of like: send a new generic failure PDU that replaces all
failure PDUs.
bob waldstein wald@lucent.com
Received on Monday, 8 January 2001 09:58:54 UTC