class type mime_header_ro =object..end
method fields : (string * string) list
method field : string -> string
method multiple_field : string -> string listfields 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.
