Get-Certificate in base64 format

Get-CertChain.ps1

function Get-CertChain {
    param (
        [string]$computername,
        [int]$port = 443
    )
    #Create a TCP Socket to the computer and a port number
    $tcpsocket = New-Object Net.Sockets.TcpClient($computerName, $port)

    #test if the socket got connected
    if (!$tcpsocket) {
        Write-Error "Error Opening Connection: $port on $computername Unreachable"
        exit 1
    }
    else {
        #Socket Got connected get the tcp stream ready to read the certificate
        Write-Host "Successfully Connected to $computername on $port" -ForegroundColor Green -BackgroundColor Black
        $tcpstream = $tcpsocket.GetStream()
        Write-Host "Reading SSL Certificate...." -ForegroundColor Yellow -BackgroundColor Black
        #Create an SSL Connection
        $sslStream = New-Object System.Net.Security.SslStream($tcpstream, $false)
        #Force the SSL Connection to send us the certificate
        $sslStream.AuthenticateAsClient($computerName)

        #Read the certificate
        $certinfo = New-Object system.security.cryptography.x509certificates.x509certificate2($sslStream.RemoteCertificate)
        # Use the Cert Info to get the Certificate itself converted into Base64
        $Base64Cert = [convert]::ToBase64String(($certinfo).RawData, 'InsertLineBreaks')
        $output = 
        @"

-----BEGIN CERTIFICATE-----
$Base64Cert
-----END CERTIFICATE-----
"@
    }
    return $output
}