HTTP参考手册

标题 | Headers

Accept-Ranges响应的 HTTP 标头是由服务器使用以通告其支持部分请求的标志物。此字段的值表示可用于定义范围的单位。

如果存在Accept-Ranges标题，浏览器可能会尝试恢复中断的下载，而不是从头再次开始。

Header type	Response header
Forbidden header name	no

Accept-Ranges: bytes
Accept-Ranges: none

none没有范围单位被支持，这使得它的标题相当于它自己的缺席，因此很少使用，尽管一些浏览器，如 IE9 ，它被用来禁用或删除下载管理器中的暂停按钮。

bytes范围的单位是字节。

Accept-Ranges: bytes

Specification	Title
RFC 7233, section 2.3: Accept-Ranges	Hypertext Transfer Protocol (HTTP/1.1): Range Requests

Feature	Chrome	Firefox	Edge	Internet Explorer	Opera	Safari
Basic Support	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)

Feature	Android	Chrome for Android	Edge mobile	Firefox for Android	IE mobile	Opera Android	iOS Safari
Basic Support	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)

1.Accept
2.Accept-Charset
3.Accept-Encoding
4.Accept-Language
5.Access-Control-Allow-Credentials
6.Access-Control-Allow-Headers
7.Access-Control-Allow-Methods
8.Access-Control-Allow-Origin
9.Access-Control-Expose-Headers
10.Access-Control-Max-Age
11.Access-Control-Request-Headers
12.Access-Control-Request-Method
13.Age
14.Allow
15.Authorization
16.Cache-Control
17.Connection
18.Content-Disposition
19.Content-Encoding
20.Content-Language
21.Content-Length
22.Content-Location
23.Content-Range
24.Content-Type
25.Cookie
26.Cookie2
27.Date
28.DNT
29.ETag
30.Expect
31.Expires
32.Forwarded
33.From
34.Headers
35.Host
36.If-Match
37.If-Modified-Since
38.If-None-Match
39.If-Range
40.If-Unmodified-Since
41.Keep-Alive
42.Large-Allocation
43.Last-Modified
44.Location
45.Origin
46.Pragma
47.Proxy-Authenticate
48.Proxy-Authorization
49.Public-Key-Pins
50.Public-Key-Pins-Report-Only
51.Range
52.Referer
53.Referrer-Policy
54.Retry-After
55.Server
56.Set-Cookie
57.Set-Cookie2
58.SourceMap
59.Strict-Transport-Security
60.TE
61.Tk
62.Trailer
63.Transfer-Encoding
64.Upgrade-Insecure-Requests
65.User-Agent
66.User-Agent: Firefox
67.Vary
68.Via
69.Warning
70.WWW-Authenticate
71.X-Content-Type-Options
72.X-DNS-Prefetch-Control
73.X-Forwarded-For
74.X-Forwarded-Host
75.X-Forwarded-Proto
76.X-Frame-Options
77.X-XSS-Protection

HTTP

超文本传输协议（ HTTP，HyperText Transfer Protocol ) 是互联网上应用最为广泛的一种网络协议。所有的 WWW 文件都必须遵守这个标准。

1.指南 \| Guides
2.指南：基础 \| Guides: Basics
3.CSP
4.标题 \| Headers
5.方法 \| Methods
6.RFC 2616: HTTP/1.1
7.RFC 4918: WebDAV
8.RFC 5023: The Atom Publishing Protocol
9.RFC 7230: Message Syntax and Routing
10.RFC 7231: Semantics and Content
11.RFC 7232: Conditional Requests
12.RFC 7233: Range Requests
13.RFC 7234: Caching
14.RFC 7235: Authentication
15.状态 \| Status
16.HTTP 请求方法
17.HTTP状态码
18.HTTP 响应头信息
19.HTTP 教程