The date and time that the message was sent.

date

server

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.

Indicate the connection should be upgraded from HTTP to HTTPS.

The last modified date for the requested object.

An identifier for a specific version of a resource.

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

What partial content range types this server supports via byte serving.

The length of the response body in octets (8-bit bytes).

Indicates that different content may be provided to different clients, depending on the vary header.

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.