Content-Type

The Content-Type entity-header field indicates the media type of the entity-body sent to the recipient or, in the case of the HEAD method, the media type that would have been sent had the request been a GET.

       Content-Type   = "Content-Type" ":" media-type

Media types are defined in section 3.7. An example of the field is

       Content-Type: text/html; charset=ISO-8859-4

Further discussion of methods for identifying the media type of an entity is provided in section 7.2.1.