TcpStreamReaderWriter.ps1

Function ZebraTCPClient {
    <#
    
    Source/Crecit: Sven Sperner, https://github.com/sperner
    Original Code Permalink: 
    https://github.com/sperner/PowerShell/blob/8c661ec4d0914b02095ffabb7c9dcbd8b1f0185a/TcpClient.ps1

    .DESCRIPTION
    -To use, load function into a powershell session console.
    -Default port is 9100. Zebra printers also uses port 6101.
    -Port defaults to 9100 unless otherwise provided.
    -Modified from Sven's code for more traditional command prompt interface.
    -Added "quit" feature to exit the function.
    
    .EXAMPLE
    ZebraTCPClient -remotehost 100.100.100.100 -port 6101
    

    .EXAMPLE
    ZebraTCPClient  100.100.100.100
    
    #>

    param( [string] $remotehost, [int] $port = 9100 )   
    
    try
    {
        Write-Host "Connecting to $remoteHost on port $port ... " -NoNewLine
        try
        {
            $socket = New-Object System.Net.Sockets.TcpClient( $remoteHost, $port )
            Write-Host -ForegroundColor Green "OK"
        }
        catch
        {
            Write-Host -ForegroundColor Red "failed"
            Break
        }
    
        $stream = $socket.GetStream( )
        $writer = New-Object System.IO.StreamWriter( $stream )
        $buffer = New-Object System.Byte[] 1024
        $encoding = New-Object System.Text.AsciiEncoding
    
        while ($command -notmatch "^quit$") {   
            start-sleep -m 500
            while($stream.DataAvailable ) 
            {
                $read = $stream.Read( $buffer, 0, 1024 )
                Write-Host -n "Res> $(($encoding.GetString( $buffer, 0, $read )))`r`n"
            }
    
            Write-Host "Cmd> " -nonewline; $command = Read-Host
            $writer.WriteLine( $command )
            $writer.Flush( )
        }
    }
    finally
    {
        if( $writer ) {	$writer.Close( )	}
        if( $stream ) {	$stream.Close( )	}
    } 
    }