xmlHTTPRequest problem

[David Wang]

Ive been playing around with xmlHTTPRequest and was wondering if i was
programming a part of my code wrong.

what i want to do is have the browser access another part of my site
using xmlhttprequest.

however, when i use xmlhttp.open("P OST",
'http://xml.mysite.com/test.php')
it fails, but if i use xmlhttp.open("P OST",
'http://www.mysite.com/test.php') it works. Is access to another url
restricted in xmlhttp?

thanks in advance.

[Dag Sunde]

Re: xmlHTTPRequest problem

"David Wang" <dasn0wie@gmail .com> wrote in message
news:1126496360 .820115.248190@ o13g2000cwo.goo glegroups.com.. .[color=blue]
> Ive been playing around with xmlHTTPRequest and was wondering if i was
> programming a part of my code wrong.
>
> what i want to do is have the browser access another part of my site
> using xmlhttprequest.
>
> however, when i use xmlhttp.open("P OST",
> 'http://xml.mysite.com/test.php')
> it fails, but if i use xmlhttp.open("P OST",
> 'http://www.mysite.com/test.php') it works. Is access to another url
> restricted in xmlhttp?[/color]

Yes!

Cross-domain access is restricted in JavaScript.
You *might* be able to step out of the sandbox by signing your script,
but I have never tested that myself. (I do it quite often with
signed Java Applets, thou...).

--
Dag.

[Dag Sunde]

Re: xmlHTTPRequest problem

"Dag Sunde" <me@dagsunde.co m> wrote in message
news:jlbVe.5489 $qE.1204278@jul iett.dax.net...[color=blue]
> "David Wang" <dasn0wie@gmail .com> wrote in message
> news:1126496360 .820115.248190@ o13g2000cwo.goo glegroups.com.. .[color=green]
>> Ive been playing around with xmlHTTPRequest and was wondering if i was
>> programming a part of my code wrong.
>>
>> what i want to do is have the browser access another part of my site
>> using xmlhttprequest.
>>
>> however, when i use xmlhttp.open("P OST",
>> 'http://xml.mysite.com/test.php')
>> it fails, but if i use xmlhttp.open("P OST",
>> 'http://www.mysite.com/test.php') it works. Is access to another url
>> restricted in xmlhttp?[/color]
>
> Yes!
>
> Cross-domain access is restricted in JavaScript.
> You *might* be able to step out of the sandbox by signing your script,
> but I have never tested that myself. (I do it quite often with
> signed Java Applets, thou...).[/color]

Forgot...

You can make a proxy script on 'http://www.mysite.com/test.php', that
calls 'http://xml.mysite.com/test.php' on the server side and returns
the result.

--
Dag.

[Martin Honnen]

Re: xmlHTTPRequest problem



David Wang wrote:
[color=blue]
> Ive been playing around with xmlHTTPRequest and was wondering if i was
> programming a part of my code wrong.
>
> what i want to do is have the browser access another part of my site
> using xmlhttprequest.
>
> however, when i use xmlhttp.open("P OST",
> 'http://xml.mysite.com/test.php')
> it fails, but if i use xmlhttp.open("P OST",
> 'http://www.mysite.com/test.php') it works. Is access to another url
> restricted in xmlhttp?[/color]

Yes, general with client-side scripting there are restrictions falling
under the "same origin policy" although that term has had a meaning
before XMLHttpRequest existed.

As for your particular problem in theory it could help to set
document.domain = 'mysite.com';
before you try your request as in your special case you do not want to
access a completely different domain but a subdomain.
I say in theory as that approach with setting document.domain was
introduced for cross frame scripting and I am not sure whether it
applies to XMLHttpRequest implementations as well.
You could try with your domain/sub-domains and report back whether that
improves things.


--

Martin Honnen

http://JavaScript.FAQTs.com/

[David Wang]

Re: xmlHTTPRequest problem

it looks as if modifying document.domain DOES NOT work. i ended up
just leaving the script in another directory. =(