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xml served by CGI script not read by .response.XML

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Joined: 04 May 2008
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PostPosted: Sun May 04, 2008 5:25 pm    Post subject: xml served by CGI script not read by .response.XML Reply with quote


I'm trying to get an automatically updating rss news service one one of my webpages, from the BBC news website. Since I've run into a permissioning problem with downloading an xml file from a remote site with ajax, I've set up a CGI script on my own site that just delivers the remote site xml.

It kind of works... in my ajax javascript, I get a response object and the .responseText contains the full xml from the BBC site. However, when I try to use responseXML on the same response object, it come out blank, so I can't do any parsing with the data.

Any ideas ?

My javascript code is:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
    <title>Untitled Page</title>
<script type="text/javascript">
var xmlHttp;

function getXmlHttpObject(){var xmlHttpTemp=null;try{xmlHttpTemp=new ActiveXObject("Msxml2.XMLHTTP");}catch (e){try{xmlHttpTemp=new ActiveXObject("Microsoft.XMLHTTP");}catch (e){try{xmlHttpTemp=new XMLHttpRequest();}catch (e){xmlHttpTemp=null;}}}return xmlHttpTemp;}

function getNews(){

function gotNews(){
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){
var xmlDoc=xmlHttp.responseXML.documentElement;
var content="<span style='font-weight: bold; font-size: x-large; color: blue; text-align: center; font-variant: small-caps; text-decoration: underline'><a href='http://news.bbc.co.uk/' target='_blank'>Latest News From BBC News</a></span><br/><br/><ul>";
for(var i=0;i<1;i++){
//content+="<li><a href='"+xmlDoc.getElementsByTagName("item")[i].getElementsByTagName("link")[0].childNodes[0].nodeValue+"' target='_blank'>"+xmlDoc.getElementsByTagName("item")[i].getElementsByTagName("title")[0].childNodes[0].nodeValue+"</a><br/>";
var myTime = new Date();
content+="</ul><small><tt>Updated "+myTime.toLocaleString()+"</tt></small>";


<body onload="xmlHttp=getXmlHttpObject();getNews();">
<div id="news"></div>

and my CGI script is:

#!/usr/bin/perl -w

require "cgi-lib.pl";

use CGI ':standard';
#use CGI::Carp qw(fatalsToBrowser);
$query = new CGI;
print $query->header ( );
$feedurl = "http://newsrss.bbc.co.uk/rss/newsonline_uk_edition/front_page/rss.xml";
$timeout = 30;
use LWP::UserAgent;
$ua = new LWP::UserAgent;
$req = HTTP::Request->new(GET => "$feedurl");
$res = $ua->request($req);
if ($res->is_success) {
   $tempdata = $res->content;
   #print "Content-Type:application/x-download\n"; 
   #print "Content-Disposition:attachment;filename=$ID\n\n";
   print $tempdata;

What comes back from my CGI script looks exactly like what comes back from the BBC rss itself, but I can't use it...

Any ideas
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Joined: 04 May 2008
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PostPosted: Thu May 08, 2008 6:56 pm    Post subject: Reply with quote

anyone ?
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