print/save a chart proxy problem

[blade226]

Hello,

i want to save/print a chart.
I want to use


chart.save({ type: 'image/png' });

but the server is in a protected network.
I must go over a proxy (http://proxy.domainname.de:3129) and he must have an user authentication.

How can i implement the proxy and the authentication?

[mitchellsimoens]

How is auth being done? Basic auth or via a session on the server side or...?

[blade226]

I don't know it.

Here is the translated statement of our it-department:

you need to access the site via our proxy with authentication
(http://proxy.stadt-mh.de:3129). How do you do this programmatically, I can
not tell.