Request Headers

The browser can send headers to the server. Most headers are optional.

The following table lists some of the commonly used request headers.

Table 8–1 Common Request Headers


Request Header	Description
`Accept`	File types the browser can accept.
`Authorization`	Used if the browser wants to authenticate itself with a server. Information such as the user name and password are included.
`User-Agent`	Name and version of the browser software.
`Referer`	URL of the document where the user clicked the link.
`Host`	Internet host and port number of the resource being requested.