UDP Broadcast Server/Monitor - Powershell

broadcast.ps1

param(
    [ValidateSet("serve", "monitor")]
    [Parameter(Mandatory = $true)]
    [string]$Command,

    [string]$Address = "255.255.255.255",
    [int]$Port = 5606
)

if ($Command -eq "serve") {
    $IP = [System.Net.Dns]::GetHostAddresses($Address)
    $EndPoints = New-Object System.Net.IPEndPoint([System.Net.IPAddress]::Parse($IP), $Port)
    $Client = New-Object System.Net.Sockets.UDPClient

    try {
        while($true) {
            $Message = "$(Get-Date)"
            $EncodedText = [Text.Encoding]::ASCII.GetBytes($Message)
            $SendMessage = $Client.Send($EncodedText, $EncodedText.Length, $EndPoints)
            Write-Host "`r> $Message" -NoNewLine
            sleep 1
        }
    } finally {
        $Client.Close()
    }
}
elseif ($Command -eq "monitor") {
    $EndPoint = New-Object System.Net.IPEndPoint([IPAddress]::Any, $Port)
    $Client = New-Object System.Net.Sockets.UDPClient($Port)
    $Client.Client.ReceiveTimeout = 100

    try {
        while ($true) {
            try {
                $Reponse = $Client.Receive([Ref]$EndPoint)
                $Message = [Text.Encoding]::ASCII.GetString($Reponse)
                Write-Host "`r> $($EndPoint.address.ToString()): $Message" -NoNewLine
            } catch [System.Net.Sockets.SocketException] { continue }
        }
    } finally {
        $Client.Close()
    }
}