How to I authenticate with a ISA proxy from my application seemlessly?

Question

I am trying to us Qt to access a website and download updates, the problem is that one install base is using a Microsoft ISA proxy server which requires authentication.

Qt gives me a function to supply a username and password: http://doc.trolltech.com/4.5/qnetworkaccessmanager.html#proxyAuthenticationRequired

However other applications do this without asking the user for details. How do I achieve this?

Answer 1

What type of proxy are you running? See

http://doc.trolltech.com/4.5/qnetworkproxy.html

to find what proxies Qt support.