[ka-Map-users] Displaying ka-map images/interface from remote server

Paul Spencer pspencer at dmsolutions.ca
Thu Dec 22 07:48:26 EST 2005

Chris, if I understand your question correctly, I think that what you  
want cannot be done without some difficulty.  Please read the  
following ... if it's not what you are trying to do, please let me know.

I am assuming you have a site at http://some.server/ and your  
mapserver is at http://some.other.server/

Due to security restrictions implemented by browsers to prevent cross- 
site scripting attacks and other hacks, the javascript security model  
prevents XmlHttpRequest from being able to load from sites that are  
not within the same domain as the main page.  Using iframes (an  
alternate mechanism to XmlHttpRequest) results in the same problem.

THe one technique that I have found to work around this is to  
dynamically create script tags and insert them into the head of the  
page.  The script tag can point at a remote server and load  
javascript that will be evaluated.  Since ka-Map already returns  
javascript via the XmlHttpRequest object, it may be possible to  
replace the guts of xhr.js with something that does script tag  

I'm not really willing to make this part of ka-Map, but if you can  
get it to work, please document it in Lorenzo's wiki :)



On 17-Dec-05, at 1:35 AM, Chris G. Stevens wrote:

> First...great work and the new layout is awesome!!
> I'm looking for information on how to display the
> ka-map interface in an existing application while the
> mapserver installation is separate from the main
> webserver (i.e. using fgs on alternate port) or a
> completely separate machine (i.e maps.example.com).
> I've done plenty of reading, but I haven't found the
> answers yet.  I'm sure Mapserver is capable of this,
> but I'm probably not searching with the right terms.
> Maybe "wms" or "wfs" is what I should be focusing on??
> For clarification, I would like to display the ka-map
> interface within a div inside a Postnuke module that I
> am developing while the map data and mapserver run
> remotely on a different machine entirely.  I would
> also need to be able to query the ka-map setup for
> lat/longs on the map from the click, etc...
> My current setup is fgs + ka-map cvs (~12/14/2005) on
> FC4.  FGS is on 8080 and my system installed apache is
> on 80.
> The end goal on this is a flight tracking application,
> but that's a long way off.
> Thanks in advance!
> Chris
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|Paul Spencer                           pspencer at dmsolutions.ca   |
|Applications & Software Development                              |
|DM Solutions Group Inc                 http://www.dmsolutions.ca/|

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