The browser can send headers to the server. Most are optional.
The following table lists some of the commonly used request headers.
Table 12–1 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 on the link. |
|
Host |
Internet host and port number of the resource being requested. |