testport.ps1

function QuerySQLListner{  
[cmdletbinding(  
    DefaultParameterSetName = '',  
    ConfirmImpact = "low"
)]  
    Param(  
        [Parameter(  
            Mandatory = $True,  
            Position = 0,  
            ParameterSetName = '',  
            ValueFromPipeline = $True)]  
            [string]$Computer
        )  
    Begin {  
        $ErrorActionPreference = "SilentlyContinue"  
        $Port = 1434
        $ConnectionTimeout = 1000
    }  
    Process {   
            [System.Net.Dns]::GetHostEntry($Computer).AddressList[0].IPAddressToString
            $FormattedResults = "" | Select ServerName, InstanceName, IsClustered, Version, TCP,NamedPipe
            $UDPClient = new-Object system.Net.Sockets.Udpclient
            $UDPClient.client.ReceiveTimeout = $ConnectionTimeout 
            $UDPClient.Connect("$Computer",$Port) 
            $ToASCII = new-object system.text.asciiencoding 
            $UDPPacket = 0x03
            [void]$UDPClient.Send($UDPPacket,$UDPPacket.length) 
            $UDPEndpoint = New-Object system.net.ipendpoint([system.net.ipaddress]::Any,0) 
            Try { 
                $BytesRecived = $UDPClient.Receive([ref]$UDPEndpoint) 
                [string]$Response = $ToASCII.GetString($BytesRecived)
                $res = ""
                If ($Response) {

                    $Response<# = $Response.Substring(3,$Response.Length-5)
                    $i = 0;
                    $Response.Split(";") |
                    ForEach {
                        if ($i % 2 -eq 0)
                        {
                            Write-Host "col:"$_
                        }
                        else
                        {
                                Write-Host "val:"$_
                        }
                        $i+=1
                    }#>
                    $UDPClient.close()   
                }                       
            } 
            Catch { 
                $UDPClient.Close()
            } 
    }                                  
    End {  
    }
}

QuerySQLListner webserver