Powershell ISE VSCODE Invoke-Webrequest difference

Question

I am try to download the nuget.exe via Invoke-WebRequest inside a function.

If i use Windows Powershell ISE everything works fine.

$request = Invoke-WebRequest -Uri "https://dist.nuget.org/win-x86-commandline/latest/nuget.exe" -UseBasicParsing -verbose
VERBOSE: GET https://dist.nuget.org/win-x86-commandline/latest/nuget.exe with 0-byte payload
VERBOSE: received 7088048-byte response of content type application/x-msdownload

If i use VSCODE Powershell extension i get.

$request = Invoke-WebRequest -Uri "https://dist.nuget.org/win-x86-commandline/latest/nuget.exe" -UseBasicParsing -verbose
VERBOSE: GET https://dist.nuget.org/win-x86-commandline/latest/nuget.exe with 0-byte payload
Invoke-WebRequest : The underlying connection was closed: An unexpected error occurred on a send.
At line:1 char:12
+ $request = Invoke-WebRequest -Uri "https://dist.nuget.org/win-x86-com ...
+            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand

I already tried

[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true} 
[System.Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls -bor [Net.SecurityProtocolType]::Tls11 -bor [Net.SecurityProtocolType]::Tls12 -bor [Net.SecurityProtocolType]::Tls13 -bor [Net.SecurityProtocolType]::Ssl3

$PSVersionTable in ISE and VSCODE extension is identical

Name                           Value
----                           -----
PSVersion                      5.1.19041.1682
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.19041.1682
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

Is there a way to analyze/debug the difference? There must be some kind of difference in this environments.

Other download variants besides Invoke-WebRequest won't work for me, because i need the $request answer to phrase the header in some variants

Carsten.R · Accepted Answer · 2022-08-14T08:34:32.707

The error was a previous call to...

[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true}

Setting the callback to $true won't work and screw things up.

-SkipCertificateCheck is not availible in PSVersion 5.1.19041.1682

Added some C# code to Set the ServerCertificateValidationCallback to true if needed.

function Private-SslVerification {
    [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseApprovedVerbs", "")]
    param()
    if (-not ([System.Management.Automation.PSTypeName]"SslVerification").Type)
    {
        Add-Type -TypeDefinition  @"
        using System.Net.Security;
        using System.Security.Cryptography.X509Certificates;
        public static class SslVerification
        {
            private static bool ValidationCallback(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { return true; }
            public static void Disable() { System.Net.ServicePointManager.ServerCertificateValidationCallback = ValidationCallback; }
            public static void Enable() { System.Net.ServicePointManager.ServerCertificateValidationCallback = null; }
        }
"@
    }
}

function Private-Disable-SslVerification
{
    [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseApprovedVerbs", "")]
    param()
    Private-SslVerification
    [SslVerification]::Disable()
}
function Private-Enable-SslVerification
{
    [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseApprovedVerbs", "")]
    param()
    Private-SslVerification
    [SslVerification]::Enable()
}

Powershell ISE VSCODE Invoke-Webrequest difference

1 Answers1