asked on

PowerShell to determine mirror site with least latency.

I've got an interesting one for all the PowerShell crew. I often go to websites for a download of an ISO. The site offers many mirror URLs. What would be cool is to copy those URLs to the clipboard and pipe them to a PS script that will attempt to determine which mirror has the least latency. Any gurus out there willing to bite? I think many techs would appreciate such a script/tool in their arsenal.

Michael B. Smith

Here ya go:

## .\Get-WebSiteSpeed.ps1 -URLs http://www.microsoft.com, http://www.yahoo.com, http://www.google.com

Param(
    [Parameter( Mandatory = $false )]
    [ValidateNotNullOrEmpty()]
    [Alias( 'URL', 'URI', 'URIs' )]
    [String[]] $URLs,
    
    [Parameter( Mandatory = $false )]
    [Switch] $Tls12 = $false
)

function wh
{
    Param
    (
        $object,
        $ForeGroundColor = 'White'
    )

    Write-Host -Object $object -ForegroundColor $ForeGroundColor
}

##
## Main
##

if( 0 )
{
    ## i have traditionally needed the below workarounds, but they just get in the way in this case

    ## accept any SSL certificate, even expired or otherwise invalid certs
    [System.Net.ServicePointManager]::ServerCertificateValidationCallback = { $true }

    ## force TLS 1.2
    if( $Tls12 )
    {
        [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12
    }
}

foreach( $url in $URLs )
{
    wh "Checking $url"

    $time = Measure-Command -Expression { $null = Invoke-WebRequest -Uri $url }

    $ms = $time.TotalMilliseconds

    "Checking $url took $( $ms.ToString( 'n0' ) ) ms"
}

Open in new window

This question needs an answer!

Become an EE member today

7 DAY FREE TRIAL

Members can start a 7-Day Free trial then enjoy unlimited access to the platform.

View membership options

Learn why we charge membership fees

We get it - no one likes a content blocker. Take one extra minute and find out why we block content.