Remove System Proxy for Invoke-WebRequest and Invoke-RestMethod

We recently had a problem that accessing a function app through Invoke-RestMethod with using a private endpoint failed, as the System default proxy will be queried. In Powershell 7.x there is a switch for disabling the proxy (-NoProxy) but there is none for Powershell 5.1. So we were searching on the web but actually did not find a nice solution. All were talking about using a proxy, which can be easily done with the „-proxy“-Switch, but you cannot set this to „none“. So we finally found a solution, by first creating a new WebSession, setting the proxy to nothing and then handling all upcoming Invoke-RestMethod or Invoke-WebSession with a predefined WebSession. This will override the current user-default-proxy and will then just „go local“

So here it is:

$Proxy=New-object System.Net.WebProxy
$WebSession=new-object Microsoft.PowerShell.Commands.WebRequestSession
$Answer=Invoke-RestMethod -Method Post -Uri "" -WebSession $WebSession 
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