code: private static function buildLsofArgs($socketAddress, $unix)
      {
          $schemeless = self::stripScheme($socketAddress);
  
          return $unix ? ('-F p0 '.escapeshellarg($schemeless)) : ('-F pT0 -i tcp@'.escapeshellarg($schemeless));
      }
docs: @param string $socketAddress
  @param bool   $unix
  
  @return string