error xml ajax in internet explorer

[rleon]

old: var xml = window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : new XMLHttpRequest();

new: var xml; if (window.ActiveXObject) {

try {

xml = new ActiveXObject("Msxml2.XMLHTTP");

} catch (e) {

xml = new ActiveXObject("Microsoft.XMLHTTP");

}

} else {

if (window.XMLHttpRequest) {

xml = new XMLHttpRequest();

}

}

[davidserduke]

Is there some test case that displays a problem you are having with the current code?

[cmcnulty]

We have a client that is having a problem. We haven't yet been able to reproduce it in house, but we believe it has to do with their use of thin clients/terminal service. They're on IE6/Windows 2000, and they log in as a non-administrator. The symptom we're seeing is that IE throws an error on: new ActiveXObject("Microsoft.XMLHTTP"); , however it does not throw an error on MSXML2.XMLHttp.5.0. We've developed the attached patch for dealing with the issue, and I for one would like to see it encorporated into ajax.js. If nothing else it shouldn't change behavior for existing users.

[cmcnulty]

tries more xmlhttp activeX strings if first does not work.

[cmcnulty]

See #3087 for a better more flexible fix than either the original suggestion or my added patch.

[flesler]

The XHR creation process is exposed since [5805] allowing overriding. You can add this code externally.