1.7. Headers

The HTTP request contains a header to define HTTP parameters. The header uses specific header fields to define these parameters. All are optional except for two requried in the context of the REST API:

Header	Decription
`Host:`	The target host of the URI i.e. the location of the Red Hat Enterprise Virtualization environment and REST API
`Accept:`	The accepted format for the representation. This documentation uses the `application/xml` to define the representation structure as XML format.

This documentation defines optional header fields in later chapters.