2024年4月25日发(作者：)

Via

Warning

Informs the server of proxies through which the request was sent.

A general warning about possible problems with the entity body.

Via: 1.0 fred, 1.1

(Apache/1.1)

Warning: 199 Miscellaneous warning

响应(Response)

Field name

Accept-

Ranges

Age

Allow

Cache-

Control

Content-

Language

Content-

Length

Content-

Location

Description

What partial content range types this server supports

The age the object has been in a cache in seconds

Valid actions for a specified resource. To be used for a 405 Method not

allowed

Tells all caching mechanisms from server to client whether they may cache

this object

The type of encoding used on the data

The language the content is in

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

An alternate location for the returned data

Example

Accept-Ranges: bytes

Age: 12

Allow: GET, HEAD

Cache-Control: max-age

Content-Encoding: gzip

Content-Language: da

Content-Length: 348

Content-Location: /

Content-Disposition: attachment;

filename=

Content-MD5:

Q2hlY2sgSW50ZWdyaXR5IQ==

Content-Range: bytes 21010-47021/47022

Content-Type: text/html; charset=utf-8

Date: Tue, 15 Nov 1994 08:12:31 GMT

ETag:

"737060cd8c284d8af7ad3082f209582d"

Expires: Thu, 01 Dec 1994 16:00:00 GMT

Last-Modified: Tue, 15 Nov 1994 12:45:26

GMT

Link: ; rel="alternate"

Location:

/pub/WWW/

Pragma: no-cache

Proxy-Authenticate: Basic

Content-An opportunity to raise a "File Download" dialogue box for a known MIME

Dispositiontype

Content-

MD5

Content-

Range

Content-

Type

Date

A -encoded binary sum of the content of the response

Where in a full body message this partial message belongs

The of this content

The date and time that the message was sent

An identifier for a specific version of a resource, often a , see

Expires

Last-

Modified

Link

Gives the date/time after which the response is considered stale

The last modified date for the requested object, in

Used to express a typed relationship with another resource, where the

relation type is defined by

Used in redirection, or when a new resource has been created.

Pragma

Implementation-specific headers that may have various effects anywhere

along the request-response chain.

Proxy-

Request authentication to access the proxy.

Authenticate

Used in redirection, or when a new resource has been created. This refresh

redirects after 5 h: 5;

(This is a proprietary/non-standard header extension introduced by Netscapeurl=/pub/WWW/

and supported by most web browsers.)

Retry-After

Server

If an entity is temporarily unavailable, this instructs the client to try again after

Retry-After: 120

a specified period of time.

A name for the serverServer: Apache/1.3.27 (Unix) (Red-Hat/Linux)

Set-Cookie: UserID=JohnDoe; Max-

Age=3600; Version=1

Trailer: Max-Forwards

Transfer-Encoding:

Set-Cookiean

Trailer

Transfer-

Encoding

Vary

Via

The Trailer general field value indicates that the given set of header fields is

present in the trailer of a message encoded with.

The form of encoding used to safely transfer the entity to the user. are: ,

compress, deflate, gzip, identity.

Tells downstream proxies how to match future request headers to decide

whether the cached response can be used rather than requesting a fresh oneVary: *

from the origin server.

Informs the client of proxies through which the response was : 1.0 fred, 1.1 (Apache/1.1)