[ckan-dev] CORS issue whe using CKAN API for creating resource

Wed Apr 27 10:57:56 UTC 2016

Hi Lucia,

Does this happen to fail on only binary type data? Also, have you tried to
manually add the headers to the nginx config?

Mike
ᐧ

On Wed, Apr 27, 2016 at 3:47 AM, <lucia.espona at wsl.ch> wrote:

> Dear all
>
> I am new to CKAN and I have an issue I am not able to solve.
>
> In the configuration file (.ini) of my CKAN instance (2.5.2) I have set
> the CORS configuration as follows:
>
> ckan.cors.origin_allow_all = true
>
> I am using the FileStore API for creating resources and SOMETIMES the CORS
> headers are missing in the response and the request fails:
>
> "Cross-Origin Request Blocked: The Same Origin Policy disallows reading
> the remote resource at http://ckan.wsl.ch/api/action/resource_create.
> (Reason: CORS header 'Access-Control-Allow-Origin' missing)."
>
> You can find below two example request I performed, one successful and the
> other failed, I haven't been able to identify the reason why. Could someone
> give me a hint how to fix this?
>
> Many thanks in advance and best regards,
> Lucia
>
> *********************************************************************
> ****** Successful Request (file uploaded is a "plain text" xml)******
>
> *Request: http://ckan.wsl.ch/api/action/resource_create
> <http://ckan.wsl.ch/api/action/resource_create>*
>    Header
>     Accept    application/json, text/javascript, */*; q=0.01
>     Accept-Encoding    gzip, deflate
>     Accept-Language    en-GB,en;q=0.5
>     Content-Length    2487139
>     Content-Type    multipart/form-data;
> boundary=---------------------------32069285045071
>     Host    ckan.wsl.ch
>     Origin    http://envidat01.wsl.ch:8080
>     Referer    http://envidat01.wsl.ch:8080/MetadataUpload/
>     User-Agent    Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0)
> Gecko/20100101 Firefox/45.0
>     X-CKAN-API-Key    f1083246-********b3b7bd16
>
>    form-data;
>            name="package_id" 6672445a-3fd7-40af-a47e-690c9b8c6b39
>            name="id" logo
>            name="url"
>            name="format" PNG
>            name="mimetype" image/png
>            name="name" logo
>            name="description" Resource Created from MetadataUpload Webapp
> using the FileStore API
>            name="upload";
>
>    filename="logo.png" Content-Type: image/png [....]
>
> *Response Headers:*
>
>
>
> *    Access-Control-Allow-Head...    X-CKAN-API-KEY, Authorization,
> Content-Type    Access-Control-Allow-Meth...    POST, PUT, GET, DELETE,
> OPTIONS    Access-Control-Allow-Orig...    **
>     Cache-Control    no-cache
>     Connection    Keep-Alive
>     Content-Length    836
>     Content-Type    application/json;charset=utf-8
>     Date    Wed, 27 Apr 2016 08:00:51 GMT
>     Keep-Alive    timeout=5, max=96
>     Pragma    no-cache
>     Server    Apache/2.4.6 (CentOS) mod_wsgi/3.4 Python/2.7.5
>
>
>
>
> *********************************************************************
> ********** FAILED request (file uploaded is a "binary" png) *********
> *Request: http://ckan.wsl.ch/api/action/resource_create
> <http://ckan.wsl.ch/api/action/resource_create>*
>    Header
>      Accept    application/json, text/javascript, */*; q=0.01
>       Accept-Encoding gzip, deflate
>       Accept-Language  en-GB,en;q=0.5
>       Content-Length   27875
>       Content-Type    multipart/form-data;
> boundary=---------------------------16263549323323
>       Host    ckan.wsl.ch
>       Origin  http://envidat01.wsl.ch:8080
>       Referer http://envidat01.wsl.ch:8080/MetadataUpload/
>       User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0)
> Gecko/20100101 Firefox/45.0
>       X-CKAN-API-Key f108324**************3b7bd16
>
>    form-data;
>            name="package_id" 6672445a-3fd7-40af-a47e-690c9b8c6b39
>            name="id" logo
>            name="url"
>            name="format" PNG
>            name="mimetype" image/png
>            name="name" logo
>            name="description" Resource Created from MetadataUpload Webapp
> using the FileStore API
>            name="upload";
>
>    filename="logo.png" Content-Type: image/png [....]
>
> *Response Headers:*
>
> Connection    close
> Content-Length 175
> Content-Type   text/html; charset=utf8
> Date    Wed, 27 Apr 2016 08:02:48 GMT
> Server  Apache/2.4.6 (CentOS) mod_wsgi/3.4 Python/2.7.5
>
>
>
>
>
> _________________________________________________________
> Dr. Lucia Espona Pernas
>
> Swiss Federal Institute for Forest, Snow and Landscape Research WSL
> Hauptgebäaude Labortrakt (HL D34)
> Zürcherstrasse 111
> 8903 Birmensdorf
> Switzerland
>
> +41 44 739 28 71 phone direct
> +41 44 739 21 11 reception
>
> www.wsl.ch
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>
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