header

$h->header(field [=> $val],...)

• When called with just an HTTP header as a parameter, this method returns the current value for the header. For example, $myobject->('content-type') would return the value for the object's Content-Type header. To define a new header value, invoke header with a hash of header=>value pairs, where the value is a scalar or reference to an array. For example, to define the Content-Type header, you would do this:
  
  

  $h->header('content-type' => 'text/plain');