Proxy Environment Variables are Case-Sensitive

[ld-carapace]

When RSSH tries to auto-detect proxy config from the environment variables, it looks for os.Getenv("http_proxy"). This is a case-sensitive operation.

This means if the environment variable is instead uppercase HTTP_PROXY, it will not detect it.

I would suggest 2 potential fixes:

• Try looking up both http_proxy and HTTP_PROXY, or;
• Manually parse the environment variables, looking for a case-invariant match of http_proxy.

[NHAS]

This is now on unstable, its a fairly significant change to the environment variable handlers, so please test to see if it works properly.

Then I'll do a release, as this work also incorporates the windows kerberos proxy work