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From "Nathan Korth (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (COUCHDB-2292) Using rewrites results in duplicate CORS header
Date Fri, 15 Aug 2014 16:43:18 GMT

     [ https://issues.apache.org/jira/browse/COUCHDB-2292?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nathan Korth updated COUCHDB-2292:
----------------------------------

    Description: 
I have configured my Couch instance to allow cross-origin requests from localhost:8080 using
the following snippet of local.ini:

{code}
[httpd]
enable_cors = true

[cors]
origins = http://localhost:8080
{code}

I also set up a simple rewrite:

{code}
{
    "from": "/rewrite",
    "to": "_view/my-view"
}
{code}

{code}
[httpd_global_handlers]
rewrite-base = {couch_httpd_proxy, handle_proxy_req, <<"http://localhost:5984/my-db/_design/app/_rewrite">>}
{code}

When I make requests for normal views, Couch sends the Access-Control-Allow-Origin header
as expected, and everything works. However, when I request the rewrite (which does work outside
of a browser), I get a header that looks like this:

{code}
Access-Control-Allow-Origin: http://localhost:8080, http://localhost:8080
{code}

This causes Chrome to complain with the following error:

{code}
XMLHttpRequest cannot load http://my-couch-instance/rewrite-base/rewrite. The 'Access-Control-Allow-Origin'
header contains multiple values 'http://localhost:8080, http://localhost:8080', but only one
is allowed. Origin 'http://localhost:8080' is therefore not allowed access.
{code}

  was:
I have configured my Couch instance to allow cross-origin requests from localhost:8080 using
the following snippet of local.ini:

{code}
[httpd]
enable_cors = true

[cors]
origins = http://localhost:8080
{code}

When I make requests for normal views, Couch sends the Access-Control-Allow-Origin header
as expected, and everything works. However, I also have a simple rewrite that points to a
view, and when I request the rewrite (which does work outside of a browser), I get a header
that looks like this:

{code}
Access-Control-Allow-Origin: http://localhost:8080, http://localhost:8080
{code}

This causes Chrome to complain with the following error:

{code}
XMLHttpRequest cannot load http://my-couch-instance/rewrite-base/rewrite. The 'Access-Control-Allow-Origin'
header contains multiple values 'http://localhost:8080, http://localhost:8080', but only one
is allowed. Origin 'http://localhost:8080' is therefore not allowed access.
{code}


> Using rewrites results in duplicate CORS header
> -----------------------------------------------
>
>                 Key: COUCHDB-2292
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-2292
>             Project: CouchDB
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>          Components: HTTP Interface
>            Reporter: Nathan Korth
>
> I have configured my Couch instance to allow cross-origin requests from localhost:8080
using the following snippet of local.ini:
> {code}
> [httpd]
> enable_cors = true
> [cors]
> origins = http://localhost:8080
> {code}
> I also set up a simple rewrite:
> {code}
> {
>     "from": "/rewrite",
>     "to": "_view/my-view"
> }
> {code}
> {code}
> [httpd_global_handlers]
> rewrite-base = {couch_httpd_proxy, handle_proxy_req, <<"http://localhost:5984/my-db/_design/app/_rewrite">>}
> {code}
> When I make requests for normal views, Couch sends the Access-Control-Allow-Origin header
as expected, and everything works. However, when I request the rewrite (which does work outside
of a browser), I get a header that looks like this:
> {code}
> Access-Control-Allow-Origin: http://localhost:8080, http://localhost:8080
> {code}
> This causes Chrome to complain with the following error:
> {code}
> XMLHttpRequest cannot load http://my-couch-instance/rewrite-base/rewrite. The 'Access-Control-Allow-Origin'
header contains multiple values 'http://localhost:8080, http://localhost:8080', but only one
is allowed. Origin 'http://localhost:8080' is therefore not allowed access.
> {code}



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