[OpenLayers-Users] free proxy wfs

[Arnd Wippermann]

Hi,

It seems to be a case of CORS - "Cross-Origin Resource Sharing".

As far as I have understood CORS, a webserver must explicit allow the
request for his data
and the browser must support CORS.

On my local pc I use two webserver on different ports.

I have one webserver (iis) configured to send the addional headers:

Access-Control-Allow-Origin: http://localhost:7080
Access-Control-Allow-Credentials: true
Access-Control-Allow-Methods: HEAD, POST, OPTIONS, GET
Access-Control-Allow-Headers: content-type

and because I use asp for my requests, I have to add the 
request method "OPTIONS" to the asp scripts properties.

After the configuration I opened an OpenLayers testpage in the 
second webserver (apache on port 7080).

The page requests for a gml file and a wfs, which resides both on the first
webserver.
And get the responses, which would displayed in the map. No proxy involved.

The demo.opengeo.org server is configured to allow access from different
domains.
That's the reason, that you need no proxy.

If you configure your own server to allow access for your partners, then you
would not need a proxy
on the client side.

Good luck,
Arnd 

Some interesting sources:
[1] https://developer.mozilla.org/en-US/docs/HTTP/Access_control_CORS
[2]
http://www.kendoui.com/blogs/teamblog/posts/11-10-03/using_cors_with_all_mod
ern_browsers.aspx
[3] http://arunranga.com/examples/access-control/preflightInvocation.html




-----Ursprüngliche Nachricht-----
Von: openlayers-users-bounces at lists.osgeo.org
[mailto:openlayers-users-bounces at lists.osgeo.org] Im Auftrag von Mario Nuñez
Jimenez
Gesendet: Freitag, 20. Dezember 2013 09:37
An: Phil Scadden; openlayers-users at lists.osgeo.org
Betreff: Re: [OpenLayers-Users] free proxy wfs

Sorry I really appreciate your help but I think I am getting lost with this
discussion. The main question from my side is:
Why "http://demo.opengeo.org/geoserver/wfs" works for me without any proxy
from my side?
I want to reproduce that if possible.

I work with partners and sadly I don't know too much about their tasks, I
only know that they are using a C++ standalone that includes a server and a
web browser embebbed. So the idea is to be able to load in that web browser
the openlayers web application locally but the OGC services are accessed
remotely since they are hosted by my corporation host.

So if he is not able to deploy a proxy in their embebbed server then the WFS
couldn't be reached.
That is the problem...