# Class type Netmime.mime_header_ro

    class type mime_header_ro = object .. end

This is the read-only version of a MIME header. There are only methods to read the header fields.

    method fields : (string * string) list

    method field : string -> string

    method multiple_field : string -> string list

The current fields of the header. `fields` returns the complete header. `field name` returns the value of the field, or raises `Not_found`. `multiple_field name` returns all fields with the same name.

Note that field names are case-insensitive; `field "content-length"`, and `field "CONTENT-LENGTH"` will return the same field. However, the method `fields` returns the original field names, without adjustment of the case.

The order of the fields is preserved.

## Since OCamlnet-4 the methods

`content_length`, `content_type`, `content_dispositions` and `content_transfer_encoding` have been moved to `Netmime_header`.