[OpenLayers-Users] OpenLayers Proxying in IIS

[Jeff Dege]

When I asked Erik whether it would be appropriate to suggest a
commercial package on the list, he said yes, it might be of help to
others with the same problem, and it would probably encourage others to
offer their own solutions, which would also be of help to others with
the same problem.
 

> -----Original Message-----
> From: John Cole [mailto:john.cole at uai.com] 
> Sent: Friday, October 05, 2007 10:56 AM
> To: Jeff Dege; users at openlayers.org
> Subject: RE: [OpenLayers-Users] OpenLayers Proxying in IIS
> 
> Search the mailing list, I posted a WFS proxy in asp.net a while back.
> 
> John
> 
> -----Original Message-----
> From: users-bounces at openlayers.org 
> [mailto:users-bounces at openlayers.org] On
> Behalf Of Jeff Dege
> Sent: Friday, October 05, 2007 9:57 AM
> To: users at openlayers.org
> Subject: [OpenLayers-Users] OpenLayers Proxying in IIS
> 
> OpenLayers uses AJAX, and AJAX has a problem with cross-domain http
> requests.  So OpenLayers has a mechanism by which a proxy 
> prefix can be
> prepended to every request, directing the request to a proxy 
> site on the
> host domain.
> 
> The issue has always been how to set up such a proxy site.
> 
> If your website is hosted by Apache, it's easy.  Apache ships 
> with tools
> that make creating such a proxy easy.
> 
> If your website is IIS, it has not been.  I, at least, have 
> been unable
> to find either public domain code, or understandable instructions, on
> how to create a proxying site for IIS.
> 
> I've asked on OpenLayers-Users, and had no answers.  I've asked
> elsewhere, and had no answers.
> 
> Eventually, I found a discussion of the issue:
>  
> http://blogs.msdn.com/david.wang/archive/2005/08/01/HOWTO_Comm
> on_URL_Red
> irection_Techniques_for_IIS_Summary.aspx
> 
> The relevant quote:
> 
>    No one seems to provide modules to do Server-Side Redirection or
> Server-Side 
>    Forwarding on IIS for free. At least, I am not aware of any
> free/open-source
>    add-on IIS modules which implement those Server-Side behaviors; I
> only know 
>    of for-fee modules like ISAPIRewrite.
> 
> Which got me looking for ISAPIRewrite.  This I found at:
> 
>     http://www.helicontech.com/isapi_rewrite/
> 
> This is a commercial, but reasonably priced ($99), ISAPI 
> filter DLL that
> implements the functionality of Apache's mod_rewrite and 
> mod_proxy.  And
> with it, creating a forwarding proxy for OpenLayers is simple.
> 
> ISAPI_Rewrite has a "lite" version that is free, but the lite version
> doesn't do proxying.  The commercial version is available for download
> on a 45-day free trial.  I downloaded it yesterday morning, and had a
> proxy working before lunchtime.
> 
> I know there are others who have had the same problem.  This may be of
> help.
> 
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