Can LabVIEW access an HTTPS site behind a proxy?

I have been trying to use LabVIEW to access an https site through our corporate firewall/proxy and have been unable to get it to work. Does anyone have any experience with this and or know whether this should be able to be done?
I have successfully been able to get LV to access websites (http and https) without going through a firewall and thanks to posts on these forums figured out how to access an http site through the firewall but have come up blank when trying any https sites. Below are some test cases I have tried. All of these sites are easily accessed via browsers so it isn't due to firewall/proxy iblocking.
Any help would be appreciated,
-- Harold
Solved!
Go to Solution.

I suspect the SSL handshake failing is getting close to the source of the problem.
We have the same proxy port (8080) for both http and https as far as I can tell. I have used wireshark to monitor the message flow and LV is doing something quite different than my browser does.
The browser opens a connection to the proxy (on port 8080) and then issues a CONNECT command to the proxy to access the ultimate location and then does a SSL handshake. 
LabVIEW opens a connection to the proxy but then appears to be encrypting it immediately without a SSL handsake that I can see. 
My speculation is that the underlying LabVIEW code is not really proxy aware and doesn't know how to issue a CONNECT command or equivalent. I'd be glad to be proven wrong with someone demonstrating this works for them (I've posted a sample VI in a previous post).
I can also post the wireshark message info if it would help anyone troubleshoot what is going on.
-- Harold

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