- From: Mike Evans <Mike.Evans@jack.see.plym.ac.uk>
- Date: Mon, 13 Mar 2000 11:14:17 -0000
- To: <w3c-dist-auth@w3.org>
- Message-ID: <000401bf8cdd$45d7e0e0$6b31a38d@see.plym.ac.uk>
Hello all, I am a Ph.D student at the University of Plymouth, UK, and I was wondering if anybody could help me with some questions I have regarding WebDAV. I need to know if any work is currently being conducted into using WebDAV over slow/intermittent connections? From what I have read from the archives, the discussion on this topic seemed to end in 1997, with a small discussion on 'email access to DAV functionality' and 'disconnected operation', but I can't find any outcome to these discussions. Was any decision reached to include/preclude such operation in the spec, or was it decided to leave it to specific impementations to handle in their own way? To give you some context, my Ph.D work is centred around managing information on the web. Hardly new, I know, but part of the work is based on developing a resource migration mechanism for the web. Before you all switch off, I am currently designing a resource migration protocol that manages the migration process, with WebDAV being used to handle the physical movement of the resource across servers during a migration. The idea is that an agent manages the process on behalf of a client. The client could be a user, or a programmatic client (such as a distributed object). If it's the latter, it will need to send a 'Migrate' message to the agent (which could be on a different host to the client), and wait for the response. What concerns me is the potential delay in receiving this response. The migration process comprises several DAV commands, some authorisation along the way, and the updating of a suitable name service, which could potentially take some time. Waiting for the response may not be a good idea, but I'd hate to go ahead and implement my own asyncronous operation if it conflicts with what has already been developed (and why reinvent the wheel anyway?!) Could anybody inform me, therefore, if any work has been carried out into disconnected operation, as I will gratefully use it. If not, I'll have to come up with my own solution. Clearly, as I'm working on automatic operation of the migration process, I can't use e-mail notification. BTW, I was wondering what (if anything) I should do with the migration protocol once it's complete? The protocol _uses_ WebDAV, it doesn't _extend_ it, but it does extend HTTP (minimally), and it does define cross-server operations, so it may be useful to others. Should I write an Internet draft? Would it be useful to this group? If not, who would it be useful for? (the IETF and W3C seem a bit quiet on the resource migration front, and the URN group seems a bit contentious! Would they welcome such a draft?). Many thanks in advance for any help you can offer. Regards, Mike Evans Network Research Group University of Plymouth Room 505, The Moneycentre Building Drake Circus Plymouth Devon Mike.Evans@jack.see.plym.ac.uk
Received on Monday, 13 March 2000 06:04:44 UTC