UNC host allow list should be case insensitive

[geniuszxy]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.78.2
• OS Version: 10.0.19044

Steps to Reproduce:

1. My project is under the unc path "\\UBUNTUX" so I add "UBUNTUX" to the Allowed UNCHosts setting.
2. Try to open the file "\\ubuntux\sample.txt", a dialog says "The host 'ubuntux' was not found in the list of allowed hosts."

Paths on Windows are case insensitive, so IMO this setting should use the same rule.
This is not just an openning file issue, some extensions are using lowercase paths to process files, so actually I get many errors related to this issue. Now I have to add both "UBUNTUX" and "ubuntux" to the setting which is redundance.

[Liturgist]

I entered the UNC name in Settings as SERVER01.
I tried to open a file \\SERVER01\CODE\path\to\file.txt.
The error message appears to have changed the case.

Unable to read file '\\Server01\code\path\to\file.txt'

If I add Server01 as an allowed UNC host, it will work as expected.

[Liturgist]

1. My project is under the unc path "\\UBUNTUX" so I add "UBUNTUX" to the Allowed UNCHosts setting.
2. Try to open the file "\\ubuntux\sample.txt", a dialog says "The host 'ubuntux' was not found in the list of allowed hosts."

Try adding Ubuntux to the Allowed UNCHosts list.

[bpasero]

The fix for this change will go out at the end of this week in our insiders build [1] and early June in stable build.

[1] Insiders builds normally release every day but are currently on-hold given the MSBuild conference that takes place.

[VSCodeTriageBot]

This bug has been fixed in the latest release of VS Code Insiders!

@geniuszxy, you can help us out by commenting /verified if things are now working as expected.

If things still don't seem right, please ensure you're on version 52e56ad of Insiders (today's or later - you can use Help: About in the command palette to check), and leave a comment letting us know what isn't working as expected.

Happy Coding!

[geniuszxy]

/verified