powershell and IIS help

$LOG="C:\path\to\log"
$PATTERN="::SOAP::"
if(Get-Content $LOG | findtr $PATTERN)
{
    Restart-Service iis.exe //Obviously you'd need to put the actual service name here.
}

#IIS check script to reach out the the application pool check to see if the pool is working if it fails either
#checkpoint it will restart the application pool  and then restart IIS.
#Written 8/2014

# this creates a log file with a date and time stamp

$logfile = "C:\IIS logs\IIS-AppPool-Check_$(get-date -format `"yyyy-MM-dd_hh-mm-sstt`").txt"
 
#this is our logging function

function log($string, $color)
{
   if ($Color -eq $null) {$color = "white"}
   write-host $string -foregroundcolor $color
   $string | out-file -Filepath $logfile -append
}


#Error showing section  with errors currently suppressed 
$ErrorActionPreference = "SilentlyContinue"

#The URL to the server.
[string] $url = "http://google.com"

# First we create the request.
[net.httpWebRequest] $req = [net.webRequest]::create($url)
$req.method = "HEAD"

# We then get a response from the site.
$HTTP_Response = $HTTP_Request.GetResponse()

# We then get the HTTP code as an integer.
$HTTP_Status = [int]$HTTP_Response.StatusCode

If ($HTTP_Status -eq "200") { 
   # Write-Host "IIS is working!" 
	log "IIS is working"
}
Else {
        #$If ping is unsuccessful this section will show
    
   # Write-Host -ForegroundColor red "IIS has malfunctioned, Restarting IIS"
    log "IIS has malfunctioned, Restarting IIS"
    
   # Restart Of IIS and Application pool
 
 #IIS Restart script section
 
    invoke-command -scriptblock {iisreset}
    Start-Sleep -s 10
   # Write-Host -ForegroundColor green "IIS restarted"
    log "IIS restarted"
    
#Application Pool( used for IIS6 only will not work on later versions of IIS)

    # Write-Host "Restarting Application Pool"
    log "Restarting Application Pool"
    $appPool = get-wmiobject -namespace "root\MicrosoftIISv2" -class "IIsApplicationPool" | where-object {$_.Name -eq "W3SVC/AppPools/Keyfile"}
$appPool.Start()
   
    Start-Sleep -s 10
    # Write-Host -ForegroundColor green "Application Pool restarted"
    log "Application Pool restarted"
}

# Finally, we clean up the http request by closing it.
$HTTP_Response.Close()

# List of URLs to test
$URLs = @("http://google.com","http://sitethatdoesntexist.com")

# Empty array to store our results
$Result = @()    

# Loop through our URLs
Foreach($Uri in $URLs) { 
	$time = try{ 
		$request = $null 
		 ## Request the URI, and measure how long the response took. 
		$result1 = Measure-Command { $request = Invoke-WebRequest -Uri $uri } 
		$result1.TotalMilliseconds 
	}  
	catch 
	{ 
		 <# If the request generated an exception (i.e.: 500 server 
		 error or 404 not found), we can pull the status code from the 
		 Exception.Response property #> 
		 $time = -1 
		 $request = $_.Exception.Response 
	}   
	# Custom object to hold our information
	$result += [PSCustomObject] @{ 
		Time = Get-Date; 
		Uri = $uri; 
		StatusCode = [int] $request.StatusCode; # Status code of our request, 404, 500, etc.
		StatusDescription = $request.StatusDescription; # Brief description of status code
		TimeTaken =  $time;  # Time it took to get a response
		Content = $request.Content; # Page contents
	}
} 

if($result -ne $null) 
{ 
	# Set up some mail variables
	# SMPT settings here
	
	# Loop through the results of our URLs, send notifications if request was unsuccessful.
    Foreach($Entry in $Result) 
    { 
		# If we get any return other than 200, send alert.
        if($Entry.StatusCode -ne "200")
        { 
			Write-Host "IIS is not working at $($Entry.Uri)"
        } 
		else # A valid page was served to us.
		{
			Write-Host "IIS is working at $($Entry.Uri)"
		}
    } 
}

PS C:\Users\user\desktop> .\test.ps1
IIS is working at http://google.com
IIS is not working at http://sitethatdoesntexist.com

$HTTP_Response = [b]$HTTP_Request.GetResponse()[/b]

$HTTP_Response = [b]$req.GetResponse()[/b]