Convert BitTorrent Trackers Uri from domain to IP via PowerShell.

trackers-converter.ps1

[CmdletBinding()]
param (
    [Parameter()]
    [string]
    $Trackers,
    [Parameter()]
    [string]
    $Server
)

$re = '^(http|https|udp):\/\/(((([a-z0-9|-]*)\.){1,})[a-z]{2,})'
$dns = '1.1.1.1'
$output = ''

if ($Server) {
    $dns = $Server
}

$Trackers.Split("`n") | ForEach-Object {
  if ($_ -match $re) {
    $domain = $Matches[2]
    $result = (Resolve-DnsName -Name $domain -Type A -Server $dns -NoHostsFile).IPAddress
    if ($result.GetType().Name -eq 'String') {
      $output += $_.Replace($domain, $result) + "`n`n"
    }
    else {
      $output += $_.Replace($domain, $result[0]) + "`n`n"
    }
  }
}

Write-Output $output