Hi David,
I'm not aware of any such plan.
Funny you ask though, we were discussing internally about DS-EO (download
services for EO)
that in the GetProduct call require range support... but the service is
mostly geared towards downloading
static files, where range access can be optimized.
Adding the same for WCS would require encoding the entire file anyways, to
just return a part of the output... hum... if done
like that, I guess it could be implemented as a servlet filter of sorts,
just throwing away the bytes that we don't need to
return to the client. So, pretty generic functionality, I would not be
against adding it as a general functionality that can be turned on by the
admin.
One issue I see is that in general we do not know how large the output will
be, so we cannot set the content-length,
however, be aware it could be "dangerous", people might use it as a
"download accelerator" would, and make the server encode
the same WCS image many times in parallel, thus increasing the load quite a
bit (by blindly creating a set of ranges for
download, some of which might go beyond the end of file.
Cheers
Andrea
On Tue, Jun 14, 2016 at 6:09 PM, Rogers, David <david.rog...@gdit.com>
wrote:
> Hello everyone,
>
>
>
> Are there plans to add support for the Range header from the HTTP/1.1
> specification? In other words, will we be able to specify a byte range for
> a WCS call and only retrieve the specified portion of the data?
>
>
>
> Thanks,
>
>
>
> David Rogers
>
> Software Engineer
>
> General Dynamics Information Technology
>
>
>
>
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