param($targeturi)
if ($targeturi -eq $null) { Write-Host "Usage: .\checkurl.ps1 http(s)://..."; exit }

# Using TLS 1.2 only for HTTPS
# [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
# Using TLS 1.0/1.1/1.2/1.3 for HTTPS
[Net.ServicePointManager]::SecurityProtocol = @([Net.SecurityProtocolType]::Tls,[Net.SecurityProtocolType]::Tls11,[Net.SecurityProtocolType]::Tls12,[Net.SecurityProtocolType]::Tls13)
# Check PSVersion
if ($PSVersiontable.PSVersion.Major -lt 3) {
  Write-Host "To use this script, you need Windows PowerShell 3.0 or later."
  exit
}

$ErrorActionPreference = "Continue"
$outstr
try {
  $httpresponse = (Invoke-WebRequest -Uri $targeturi)
  if ($?) {
    $outstr = $targeturi + "," + $httpresponse.StatusDescription + "," + $httpresponse.StatusCode
  }
}
catch
{
    $outstr = $targeturi + ",NG," + $error[0].Exception.Message
}
$outstr