将Accept-Encoding字段留空是否有效？ [英] Is it valid to leave Accept-Encoding field empty?

问题描述

我发现Accept-Encoding的例子违反了文档中的规范：

I found the example of Accept-Encoding violates the specification in the document:

http://www.w3.org/Protocols/rfc2616/rfc2616-sec14#sec14.3

Accept-Encoding标题字段定义如下：

The "Accept-Encoding" header field is defined as below:

   Accept-Encoding  = "Accept-Encoding" ":"
                      1#( codings [ ";" "q" "=" qvalue ] )

所以根据 1＃（...）的语法，它应该在值列表中至少包含一个元素。但其中一个例子是：

So according to the syntax of 1#(...), it should contain at least one element in the value list. But one of the examples comes after it is:

   Accept-Encoding:

它有一个空值部分。我错过了什么吗？并且有人能告诉我这个用法是否有效？

It has a blank value part. Did I miss anything? And could anyone tell me is this usage valid or not?

推荐答案

你真的应该停止查看RFC 2616.参见 http://trac.tools.ietf.org/wg/httpbis/trac/wiki 。

You really should stop looking at RFC 2616. See http://trac.tools.ietf.org/wg/httpbis/trac/wiki.

您的问题的答案如下： http://trac.tools.ietf.org/wg/httpbis/trac/ticket/25 ，是的，空字段值有效。

The answer to your question is here: http://trac.tools.ietf.org/wg/httpbis/trac/ticket/25, so yes, an empty field value is valid.

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