[ckan-dev] ...not allowed by Access-Control-Allow-Origin, even though resource_proxy is enabled.

Tue Aug 13 06:09:43 UTC 2013

Port 80 is open, however, port 8080 is not. Apache is running on port 8080 and nginx on 80.

-----Oprindelig meddelelse-----
Fra: ckan-dev-bounces at lists.okfn.org [mailto:ckan-dev-bounces at lists.okfn.org] På vegne af Dominik Moritz
Sendt: 9. august 2013 18:31
Til: CKAN Development Discussions
Emne: Re: [ckan-dev] ...not allowed by Access-Control-Allow-Origin, even though resource_proxy is enabled.

Hey,

On 9 Aug 2013, at 12:50, Henrik Aagaard Sørensen <BU1G at tmf.kk.dk> wrote:

> I do seem to have trouble downloading the file.
> 
> Do you have some sort of list of which ports (etc.) should be open, which I can forward to the department who takes care of this?

I guess it's mostly port 80. 

> Perhaps that could solve the issue I also have with the DataStorer not being able to retrieve URLs for storing.

Probably, yes. 

> Regards,
> Henrik
> 
> 
> -----Oprindelig meddelelse-----
> Fra: ckan-dev-bounces at lists.okfn.org 
> [mailto:ckan-dev-bounces at lists.okfn.org] På vegne af Dominik Moritz
> Sendt: 9. august 2013 12:39
> Til: CKAN Development Discussions
> Emne: Re: [ckan-dev] ...not allowed by Access-Control-Allow-Origin, even though resource_proxy is enabled.
> 
> Hey,
> 
> On 9 Aug 2013, at 12:23, Henrik Aagaard Sørensen <BU1G at tmf.kk.dk> wrote:
> 
>> Hey,
>> 
>> Thanks for all your research in the problem we're having.
>> 
>> Could it be a simple matter of closed ports on a firewall?
> 
> Yes. Can you try to access the file from the server (i.e. with curl)?
> 
>> 
>> I'm running the server, however, I'm not in control of the firewall and other "public" internet setup of the server.
>> 
>> Thank you for your comment on a great site :) We are working a lot on getting it ready for the public to use.
> 
> Great :-)
> 
> In case your instance is not on http://ckan.org/instances/ yet, we'd love to add it. Just make a pull request to https://github.com/okfn/ckan-instances/ with the data about your instance. 
> 
>> 
>> Cheers,
>> Henrik
>> 
>> -----Oprindelig meddelelse-----
>> Fra: ckan-dev-bounces at lists.okfn.org 
>> [mailto:ckan-dev-bounces at lists.okfn.org] På vegne af Dominik Moritz
>> Sendt: 9. august 2013 12:07
>> Til: CKAN Development Discussions
>> Emne: Re: [ckan-dev] ...not allowed by Access-Control-Allow-Origin, even though resource_proxy is enabled.
>> 
>> Hey,
>> 
>> In case you are interested in the source code, you can find the interesting part at [1]. 
>> 
>> What surprises me is that I get a `504 Gateway Time-out` error from nginx. However, the file is not very large (just 351k) and works perfectly fine in my local CKAN and on demo [2]. I don't think that an increased timeout will help since the file is small. Hopefully the 2.0.2/2.1 release will the issue.
>> 
>> Cheers,
>> Dominik
>> 
>> [1]
>> https://github.com/okfn/ckanext-spatial/blob/master/ckanext/spatial/p
>> u
>> blic/js/geojson_preview.js#L32 [2]
>> http://demo.ckan.org/dataset/geojson-dk/resource/12916ca8-27f0-4e8b-b
>> 3
>> 66-8c1f50a9bd12
>> 
>> On 9 Aug 2013, at 11:44, Adrià Mercader <adria.mercader at okfn.org> wrote:
>> 
>>> Hi Henrik,
>>> 
>>> Ignore the Access-Control-Allow-Origin error, this is caused because 
>>> the way the GeoJSON preview is implemented it tries to do a CORS 
>>> request first before trying the resource proxy. See eg
>>> http://demo.ckan.org/dataset/test-ntest/resource/bccc8d4e-e8bc-4248-
>>> 9
>>> 1
>>> ff-63ba1528d1d4 where you also get the error but the file is loaded 
>>> fine.
>>> 
>>> I suspect there is a problem on the proxying itself. Does this 
>>> happen on large GeoJSON files or on all of them?
>>> 
>>> Next versions of CKAN due on Tuesday (2.0.2 and 2.1) add support for 
>>> streaming on the resource proxy [1], perhaps that will help although 
>>> I'm not entirely familiar with this part of the code, Dominik may 
>>> know more about it.
>>> 
>>> You could also try to increase the timeout limit on nginx.
>>> 
>>> Hope this helps,
>>> 
>>> Adrià
>>> 
>>> p.d. Great site btw!
>>> 
>>> [1] https://github.com/okfn/ckan/pull/989
>>> 
>>> On 8 August 2013 07:45, Henrik Aagaard Sørensen <BU1G at tmf.kk.dk> wrote:
>>>> I get the following error:
>>>> 
>>>> 
>>>> 
>>>> XMLHttpRequest cannot load
>>>> http://wfs-kbhkort.kk.dk/k101/ows?service=WFS&version=1.0.0&request=GetFeature&typeName=k101:groenne_cykelruter&outputFormat=json&SRSNAME=EPSG:4326.
>>>> Origin http://data.kk.dk is not allowed by Access-Control-Allow-Origin.
>>>> 
>>>> 
>>>> 
>>>> Even though resource_proxy is enabled, which results in gateway 
>>>> timeout (hopefully).
>>>> 
>>>> 
>>>> 
>>>> The site is on
>>>> http://data.kk.dk/dataset/gronne-cykelruter/resource/8d64d2e0-00d1-
>>>> 4
>>>> f
>>>> f4-a36d-4f0a34949576
>>>> 
>>>> 
>>>> 
>>>> Can anyone help me out on how to solve the issue?
>>>> 
>>>> 
>>>> 
>>>> This is the error-log:
>>>> 
>>>> [Thu Aug 08 08:44:38 2013] [error] [client 127.0.0.1] mod_wsgi (pid=1669):
>>>> Exception occurred processing WSGI script '/etc/ckan/default/apache.wsgi'.
>>>> 
>>>> [Thu Aug 08 08:44:38 2013] [error] [client 127.0.0.1] IOError: 
>>>> failed to write data
>>>> 
>>>> [Thu Aug 08 08:44:38 2013] [error] 2013-08-08 08:44:38,254 INFO 
>>>> [ckan.lib.base]  /api/i18n/da render time 0.027 seconds
>>>> 
>>>> [Thu Aug 08 08:44:38 2013] [error] 2013-08-08 08:44:38,401 INFO 
>>>> [ckanext.resourceproxy.controller] Proxify resource
>>>> 8d64d2e0-00d1-4ff4-a36d-4f0a34949576
>>>> 
>>>> 
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>> 
>> Dominik Moritz
>> CKAN developer  |  skype: d.moritz  |  @doobly_doo The Open Knowledge 
>> Foundation Empowering through Open Knowledge http://okfn.org/  | 
>> @okfn  |  http://ckan.org  |  @CKANproject
>> 
>> 
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> 
> Dominik Moritz
> CKAN developer  |  skype: d.moritz  |  @doobly_doo The Open Knowledge 
> Foundation Empowering through Open Knowledge http://okfn.org/  |  
> @okfn  |  http://ckan.org  |  @CKANproject
> 
> 
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Dominik Moritz
CKAN developer  |  skype: d.moritz  |  @doobly_doo The Open Knowledge Foundation Empowering through Open Knowledge http://okfn.org/  |  @okfn  |  http://ckan.org  |  @CKANproject