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8.6

Workarounds for Cross Domain (localhost + other) AJAX calls?

Asked by TimYates in JavaScript, Java Programming Language

Tags: cross, domain, ajax

I have a website where I am using DWR to call the server in an AJAX style, however I now have a requirement to show user related data alongside that stored on the server.

My initial thought was that I could run a Java application (embedding Jetty) on the user's machine, and then load JSON from it by using an XHR request using the localhost:8888 url.

However, I'm getting security exceptions on the XHR.open method...

I thought you were allowed to load stuff from localhost?  I guess not, when the main page url isn't from there...

Does anyone have any ideas on how this can be done?  I don't want to upload the user's data (as it's huge), and so far I have the following ideas -- just wondering if anyone had any experience and knew of a way of getting this to work?

1)  Have the server running on localhost serve an html page which can be loaded into a hidden IFRAME on the main page.  Then have this IFRAME load the data into a JSON object from localhost, and then pass this JSON object back to the parent window (sounds convoluted, and would be nice to know if it might work before I try it)
2)  Do it the way I am doing it, but do it right ;-)  (I accept that the way I'm doing it MIGHT work, and it's just I have given up too easily)
3)  Forget about it...  It can't be done... (I know this is always a possible solution to problems like this)

Anyway...hope someone who has walked this path before can help :-)

Cheers!

Tim
[+][-]07/31/07 02:45 AM, ID: 19598787Accepted Solution

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Zones: JavaScript, Java Programming Language
Tags: cross, domain, ajax
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Solution Provided By: mplungjan
Participating Experts: 1
Solution Grade: A
 
[+][-]07/31/07 02:47 AM, ID: 19598795Assisted Solution

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[+][-]07/31/07 02:49 AM, ID: 19598800Author Comment

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[+][-]07/31/07 04:24 AM, ID: 19599266Expert Comment

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[+][-]07/31/07 05:50 AM, ID: 19599845Author Comment

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