[DAS2] Questions on the DAS2 spec

Ed Erwin ed_erwin at affymetrix.com
Thu May 5 17:26:02 UTC 2005

I recently re-read the document 

It is looking pretty good.  But there were areas that I didn't 
understand, and others that I want to comment on.  I'll post my 
questions/comments one-per-email to make discussion easier.


First issue: I'd like to clear-up the requirements for the base URL.

All URL examples begin something like this:


Is it permissable for "server" to contain "/" characters?
Is it permissable to use "https://" instead of "http://"
Is it really required that the string "/das/" be part of the url?

It would be useful, mainly for testing purposes, to be able to run 
multiple DAS2 servers on a single IP address, like this:


Thus "server" needs to be able to include un-escaped "/" characters, and 
maybe even ":" for designating ports.  Maybe that was already intended, 
but there are no such examples given in the spec.

I'd rather replace all the URL examples with


where urlbase can contain "/" and does not necessarily have to include 
the string "/das/".  In particular, some places that already have a DAS1 
server running on "/das" may want to use "/das2" for any new server.


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