Response Headers

The response headers contain information about the server and the response data. This section lists some common response headers.

Server

Name and version of the web server

Date

Current date in Greenwich Mean Time

Last-Modified

Date when the document was last modified

Expires

Date when the document expires

content-length

Length of the data that follows (in bytes)

content-type

MIME type of the data that follows

WWW-Authenticate

Used during authentication and includes information that tells the browser software what information is necessary for authentication such as user name and password