keep-alive

The date and time that the message was sent.

date

Control options for the current connection and list of hop-by-hop response fields.

The client or server would like to close the connection.

This and all future requests should be directed to the given URI. The request method can change.

Used to express a typed relationship with another resource.

An identifier for a specific version of a resource.

A weak tag is easier to generate and prevents byte range caching.

Standard response indicating a successful action. For GET requests this will be the resource, and for POST it will be the result of the action.