Getting start with IXMLHTTPRequest

[Jacek Caban]

On 2/8/10 1:19 PM, Nikolay Sivov wrote:
> On 2/8/2010 05:55, Jacek Caban wrote:
>> On 2/8/10 3:36 AM, Nikolay Sivov wrote:
>>>> Even if that's true, it's not a reason to choose wrong architecture.
>>>
>>> Let's say we have a WinHttpRequest object that works, it provides 
>>> similar interface as IXMLHTTP.
>>> Why should I use urlmon for that? WinHttpRequest should stay in 
>>> winhttp, and won't use urlmon.
>>
>> We don't have, it's impossible. Pluggable protocol is one of the 
>> reasons and you can't handle them unless you use urlmon.
> What's impossible? Yes, I can't handle pluggable protocol without 
> urlmon, but why do I need it? Maybe I'm missing
> something but I don't see why IXMLHTTP needs more than just http.

Using pluggable protocols has visible effect for apps (eg. an app may 
override http handler or use mime filters), so if native msxml3 uses it, 
we should use it as well and there is no way around. Also I don't know 
if native limits requests to http protocol, but (forgetting about its 
name) there is no reason it can't work for other protocols and you get 
it for free with urlmon.

>>>> Everything IE-related should use it for binding. It's because of 
>>>> plugable protocols, shared wininet session and more. urlmon is not 
>>>> just a wrapper around wininet.
>>> Why IXMLHTTPRequest is IE related? Or you mean that anything that 
>>> uses internet should go through urlmon?
>>
>> It is designed to be used by JScript scripts on web pages (although 
>> it's not the only use of it).
> Ah, so you mean using urlmon enables session sharing within browser 
> context? (I didn't know that)
> If so, i should use it of course, instead of direct connection.

Yes.


Jacek