[DAS] Dalliance: a new genome DAS client

Lincoln Stein lincoln.stein at gmail.com
Tue Aug 3 21:21:12 UTC 2010

Someone give me a quick summary of CORS support. I want to make sure that
GBrowse exports DAS 1.53 with CORS (is it just the registry metadata, or
something new?)


On Tue, Aug 3, 2010 at 4:52 PM, Jonathan Warren <jw12 at sanger.ac.uk> wrote:

> This is very cool - I had a look the other day. Was wondering why some
> sources could be attached and some can't....
> Best browser experience yet by far I'd say.
> No problems about adding CORS support - for the record I'm very happy to
> implement new capabilities testing and other suggestions to the registry
> from anyone who cares to drop me a line. Especially if it's going to enhance
> and promote the use of the registry :)
> On 3 Aug 2010, at 20:41, Thomas Down wrote:
>  As some of you already know, I've been experimenting recently with a
>> web-based DAS client for genomic data.  It's still in
>> a unashamedly prototypical state (in particular, some of the popups and
>> configuration stuff is outright clunky, and we know it!), but we're
>> starting
>> to find it quite useful, and would be interested to receive more feedback.
>> So if you're curious, you can try it here:
>>              http://www.biodalliance.org/human/ncbi36/
>> It's a fully-fledged DAS/1.53 client (with a few bits of DAS/1.6, and
>> hopefully rather more coming soon), but has one major caveat: since it's
>> pure Javascript code running in your web browser, there are limitations to
>> which servers it can connect to.  Specifically, it will only work with DAS
>> servers that implement the W3C cross-origin resource sharing model (which
>> has been discussed on this list before, but drop me a line if you've got
>> any
>> questions).  What does this mean in practice?  If you're adding
>> datasources
>> from the registry, things are simple because Dalliance will only allow you
>> to add CORS-enabled sources (a huge thanks to Jonathan Warren for adding
>> some support for this in the registry).  If you run your own DAS servers
>> and
>> don't list them in the registry, you'll need to check for CORS
>> compatibility
>> yourself.  The latest versions of Proserver and Dazzle should both be
>> okay.
>> All comments, suggestions, and bug reports are welcome!
>>                  Thomas Down.
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> Jonathan Warren
> Senior Developer and DAS coordinator
> blog: http://biodasman.wordpress.com/
> jw12 at sanger.ac.uk
> Ext: 2314
> Telephone: 01223 492314
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Lincoln D. Stein
Director, Informatics and Biocomputing Platform
Ontario Institute for Cancer Research
101 College St., Suite 800
Toronto, ON, Canada M5G0A3
416 673-8514
Assistant: Renata Musa <Renata.Musa at oicr.on.ca>

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