The date and time that the message was sent.

date

content-type

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

The client would like to keep the connection open.

WordPress redirect agent.  A value of "WordPress" indicates that WordPress itself redirected the resource.

Encoded information about your request from Cloudflare.

Indicate a resource should be loaded from a different server while still appearing to be loaded from this server.

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.

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.