5. Mandatory HTTP Requests

An HTTP request is called a mandatory request if it includes at least

one mandatory extension declaration (using the Man or the C-Man header

fields). The method name of a mandatory request MUST be prefixed by

"M-". For example, a client might express the binding rights-

management constraints in an HTTP PUT request as follows:

    M-PUT /a-resource HTTP/1.1

    Man: "http://www.copyright.org/rights-management"; ns=16

    16-copyright: http://www.copyright.org/COPYRIGHT.html

    16-contributions: http://www.copyright.org/PATCHES.html

    Host: www.w3.org

    Content-Length: 1203

    Content-Type: text/html

    <!doctype html ...

https://www.w3.org/Protocols/HTTP/ietf-ext-wg/draft-frystyk-http-extensions-03

 x x x

5.1 Fulfilling a Mandatory Request

A server MUST NOT claim to have fulfilled any mandatory request unless

it understood and obeyed all the mandatory extension declarations in

the request. This section defines a mechanism for conveying this

information to the client in such a way that it interoperates with

existing HTTP applications and prevents broken servers from giving the

false impression that an extended request was fulfilled by responding

with a 200 (Ok) response without understanding the method.

If any end-to-end mandatory extension declarations were among the

fulfilled extensions then the server MUST include an Ext response

header field in the response. In order to avoid that the Ext header

field inadvertently is cached in an HTTP/1.1 cache, the response MUST

contain a no-cache cache-control directive. If the response is

otherwise cachable, the no-cache cache-control directive SHOULD be

limited to only affect the Ext header field:

    HTTP/1.1 200 OK

    Ext:

    Cache-Control: no-cache="Ext"

    ...

If the mandatory request has been forwarded by an HTTP/1.0

intermediary proxy then this is indicated either directly in the

Request-Line or by the presence of an HTTP/1.1 Via header field. In

this case, the server MUST include an Expires header field with a date

equal to or earlier than the value of the Date header field. If the

response is otherwise cachable by HTTP/1.1 caches, the server SHOULD

include an appropriate max-age cache-control directive:

    HTTP/1.1 200 OK

    Date: Sun, 25 Oct 1998 08:12:31 GMT

    Expires: Sun, 25 Oct 1998 08:12:31 GMT

    Ext:

    Cache-Control: no-cache="Ext", max-age=3600

    ...

If any hop-by-hop mandatory extension declarations were among the

fulfilled extensions then the server MUST include a C-Ext response

header field in the response. The C-Ext header field MUST be protected

by a Connection header field (see [5], section 14.10).

    HTTP/1.1 200 OK

    C-Ext:

    Connection: C-Ext

Frystyk, et al                                           [Page 9]

INTERNET-DRAFT           HTTP Extensions        Wed, Jan 20, 1999

Note, that the Ext and C-Ext header fields are not mutually exclusive;

they can be both be present in a response when  fulfilling mandatory

request containing both hop-by-hop as well as end-to-end mandatory

extension declarations.

https://www.w3.org/Protocols/HTTP/ietf-ext-wg/draft-frystyk-http-extensions-02

[http 1.1] M-POST w3的更多相关文章

  1. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    关于网页中第一行<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www ...

  2. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">的含义

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/x ...

  3. https://validator.w3.org

    https://validator.w3.org/nu/?doc=http%3A%2F%2Fdev.mysql.com%2Fdoc%2Frefman%2F5.7%2Fen%2Fmanual-info. ...

  4. js经典试题之w3规范系列

    js经典试题之w3规范系列 1:w3c 制定的 javascript 标准事件模型的正确的顺序? 答案:事件捕获->事件处理->事件冒泡 解析:先事件捕获从windows > doc ...

  5. xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance(xsi:schemaLocation详解)

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"中xsi的意思是 :本xml文件中要用到某些来自xsi代表的“http:/ ...

  6. C# W3 调试

    如果在调试附加进程中 没W3进程的话, 在运行里输入 uac  设置为从不通知 即可:

  7. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">详解

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/ ...

  8. w3 parse a url

     最新链接:https://www.w3.org/TR/html53/ 2.6 URLs — HTML5 li, dd li { margin: 1em 0; } dt, dfn { font-wei ...

  9. hbuilder中的 http://www.w3.org/TR/html4/frameset.dtd

    <!-- This is the HTML 4.01 Frameset DTD, which should be used for documents with frames. This DTD ...

  10. hbuilder中的 http://www.w3.org/TR/html4/loose.dtd

    <!-- This is the HTML 4.01 Transitional DTD, which includes presentation attributes and elements ...

随机推荐

  1. linux中的bash

    一.bash的简介 操作系统都是需要通过shell跟内核来交互的,常见的shell有GUI.KDE.sh.csh.bash.tsh.zsh等. 而linux中最常用的shell就是bash. 二.ba ...

  2. CSS超链接样式，去除下划线等

    控制超链接样式 链接的四种状态: a:link - 普通的.未被访问的链接 a:visited - 用户已访问的链接 a:hover - 鼠标指针位于链接的上方 a:active - 链接被点击的时刻 ...

  3. LinkedHashMap 与 HashMap 实现的区别

    阅读前最好对 HashMap 的内部实现方式有一定了解 LinkedHashMap 继承自 HashMap 主要重写了一个节点类 LinkedHashMap.Entry,并维护一个头结点和尾节点 以及 ...

  4. PHP中涉及文件路径的讨论

    #1 $_SERVER中的PHP_SELF,当前执行脚本的文件名,与 document root 有关.例如,在地址为 http://example.com/test.php/foo.bar 的脚本中 ...

  5. 【PHP】流程控制

    一.      顺序结构 a)    PHP的脚本从上到下,从左往右的执行顺序就是顺序结构! 二.      分支结构 a)    单一的分支结构 If ( 条件表达式 ) { 程序体: } 执行过程 ...

  6. problems

    exceptionUnable to connect to userservice.shanmaohuwai.com:80 . Error #0: stream_socket_client(): un ...

  7. python通俗讲解闭包

    通俗理解闭包 先来看看什么是闭包吧 闭包是引用了自由变量的函数.这个被引用的自由变量将和这个函数一同存在,即使已经离开了创造它的环境也不例外.所以,有另一种说法认为闭包是由函数和与其相关的引用环境组合 ...

  8. 7.5 this关键字的使用；标准学生类的编写 、构造方法的格式

    /** 学生类** 起名字我们要求做到见名知意.* 而我们现在的代码中的n和a就没有做到见名知意,所以我要改进.** 如果有局部变量名和成员变量名相同,在局部使用的时候,采用的是就近的原则. * 我们 ...

  9. Js 事件原理与事件委托

    事件原理三阶段 捕获(有外向内).目标.冒泡(由内向外) 事件冒泡(event bubbling),即事件开始时由最具体的元素(文档中嵌套层次最深的那个节点)接收,然后逐级向上传播到较为不具体的节点( ...

  10. Docker-Bridge Network 01 容器间通信

    本小节介绍bridge network模式下,单机上的容器网络拓扑及通信. 1.前言 对于单机上的容器,Docker提供了bridge.host.none三种网络.我们首先介绍经典的bridge模式. ...