IIS Enable the HTTP Keep-Alive in Powershell - iis

Question

The page http://technet.microsoft.com/en-us/library/cc772183(v=ws.10).aspx explains how to Enable the HTTP Keep-Alive Response Header (IIS 7)
I want to do this in Powershell by WMI
It says:
Use the following WMI classes, methods, or properties to perform this
procedure:
HTTPProtocolSection.AllowKeepAlive property
I've tried:
PS > Get-WmiObject -Class HTTPProtocolSection
Get-WmiObject : Invalid class
At line:1 char:14
+ Get-WmiObject <<<< -Class HTTPProtocolSection
+ CategoryInfo : InvalidOperation: (:) [Get-WmiObject], ManagementException
+ FullyQualifiedErrorId : GetWMIManagementException,Microsoft.PowerShell.Commands.GetWmiObjectCommand
What's the right way of using this HTTPProtocolSection class and enabling AllowKeepAlive property?

Answer 1

You can also set it with the Set-WebConfiguration cmdlet:
Set-WebConfiguration -Filter system.webServer/httpProtocol -PSPath MACHINE/WEBROOT/APPHOST -Value #{allowKeepAlive=$true}

Answer 2

To discover class in a particular namespace try this
PS c:\>Get-WmiObject -List * "root\webadministration"
and to find a match do this
PS c:\>Get-WmiObject -List * "root\webadministration" | Where-Object {$_.name -match "Http"}
PS C:\>Get-WmiObject -Namespace "root\webadministration" -class HttpProtocolSection | Get-Member
TypeName: System.Management.ManagementObject#root\webadministration\HttpProtocolSection
Name MemberType Definition
---- ---------- ----------
PSComputerName AliasProperty PSComputerName = __SERVER
Add Method System.Management.ManagementBaseObject Add(System.String CollectionName, System.Ma...
Clear Method System.Management.ManagementBaseObject Clear(System.String CollectionName)
Get Method System.Management.ManagementBaseObject Get(System.String CollectionName, System.St...
Remove Method System.Management.ManagementBaseObject Remove(System.String CollectionName, System...
RevertToParent Method System.Management.ManagementBaseObject RevertToParent(System.String PropertyName)
AllowKeepAlive Property bool AllowKeepAlive {get;set;}
CustomHeaders Property System.Management.ManagementObject#CustomHeaderSettings CustomHeaders {get;set;}
Location Property string Location {get;set;}
Path Property string Path {get;set;}
RedirectHeaders Property System.Management.ManagementObject#RedirectHeaderSettings RedirectHeaders {get;set;}
SectionInformation Property System.Management.ManagementObject#SectionInformation SectionInformation {get;set;}
__CLASS Property string __CLASS {get;set;}
__DERIVATION Property string[] __DERIVATION {get;set;}
__DYNASTY Property string __DYNASTY {get;set;}
__GENUS Property int __GENUS {get;set;}
__NAMESPACE Property string __NAMESPACE {get;set;}
__PATH Property string __PATH {get;set;}
__PROPERTY_COUNT Property int __PROPERTY_COUNT {get;set;}
__RELPATH Property string __RELPATH {get;set;}
__SERVER Property string __SERVER {get;set;}
__SUPERCLASS Property string __SUPERCLASS {get;set;}
ConvertFromDateTime ScriptMethod System.Object ConvertFromDateTime();
ConvertToDateTime ScriptMethod System.Object ConvertToDateTime();
You can then do something like this to get the value of AllowKeepAlive
PS C:\> (get-wmiobject -namespace "root\webadministration" -class HttpProtocolSection).AllowKeepAlive
True
PS C:\>$a = Get-WmiObject -Namespace "root\webadministration" -class HttpProtocolSection
PS C:\>$a.AllowKeepAlive = $false
PS C:\>$a.Put()