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- Can you tell us when WWW and Viola will support non-text
- documents? I would very much like to be able to return
- pictures including Postscript. I know this has been discussed
- in the past.
-
- One issue is how will the client know what kind of data
- is being returned. It seems there are several possibilities:
-
- 1) Make the client figure it out itself by examining the data (e.g.
- for "magic numbers"). Simplest, but makes the client do too much
- work.
-
- 2) Use typed links. A server which wishes to return non-text data
- first returns a constructed document containing anchors where the link
- type somehow encodes the data type. Benefit here is that it allows
- the user to choose the kind of data if there is a choice.
-
- 3) the HTTP protocol to allow an HTTP server to inform the client of
- the kind of data to be returned, maybe even negotiate about it.
-
- 4) Extend HTML to allow embedded non-text data, perhaps by using MIME.
- Servers will probabaly construct a new document for each query, using
- MIME's external reference feature where possible to avoid copying
- large data files.
-
- best wishes
-
-