HTTP / 1.1对多个范围的响应 [英] HTTP/1.1 response to multiple range

问题描述

在编写我的HTTP / 1.1服务器时，我遇到了处理多个范围请求的问题。

While writing my HTTP/1.1 server, I get stuck dealing multiple ranges request.

RFC 2616的第14.35.1节提到了一些示例，但没有说明服务器行为。
例如：

Section 14.35.1 of RFC 2616 refers some examples but doesn't clarify server behaviour. For instance:

GET /some/resource HTTP/1.1
...
Range: bytes=200-400,100-300,500-600
...

我应该退货吗这个确切的字节序列？
或者我应该合并所有范围，发送 100-400,500-600 ？
或者之间全部发送， 100-600 ？

Should I return this exact sequence of bytes? Or should I merge all ranges, sending 100-400,500-600? Or sending all in between, 100-600?

最差，当检查 Content-Range 响应头（第14.16节），只返回一个范围，所以我想知道服务器如何响应第14.35.1节中的示例 bytes = 0-0，-1 !!!

Worst, when checking Content-Range response header (Section 14.16), only a single range may be returned, so I wonder how would a server response to example in Section 14.35.1 bytes=0-0,-1!!!

我的服务器应如何处理此类请求？

How should my server handle such requests?

推荐答案

我刚才看看支持 Range 标头字段的其他服务器如何响应并快速执行 curl 到 example.com ：

I just had a look at how other servers that support the Range header field might respond and did a quick curl to example.com:

~# curl -s -D - -H "Range: bytes=100-200, 300-400" http://www.example.com
HTTP/1.1 206 Partial Content
Accept-Ranges: bytes
Content-Type: multipart/byteranges; boundary=3d6b6a416f9b5
Content-Length: 385
Server: ECS (fll/0761)


--3d6b6a416f9b5
Content-Type: text/html
Content-Range: bytes 100-200/1270

eta http-equiv="Content-type" content="text/html; charset=utf-8" />
    <meta name="vieport" content
--3d6b6a416f9b5
Content-Type: text/html
Content-Range: bytes 300-400/1270

-color: #f0f0f2;
        margin: 0;
        padding: 0;
        font-family: "Open Sans", "Helvetica
--3d6b6a416f9b5--

显然，你要找的是 Content-Type：multipart / byteranges; boundary 响应标题。谷歌搜索完全出现带有RFC 2616附录的W3C文档

Apparently, what your looking for is the Content-Type: multipart/byteranges; boundary response header. Googling exactly that turned up a W3C document with appendices to RFC 2616

当HTTP 206（部分内容）响应消息包含多个范围的内容（对多个非重叠范围的请求的响应）时，这些消息作为多部分消息发送-body。用于此目的的媒体类型称为 multipart / byteranges 。

multipart / byteranges 媒体类型包括两个或多个部分，每个部分都有自己的 Content-Type 和 Content-Range 字段。必需的边界参数指定用于分隔每个正文部分的边界字符串。

When an HTTP 206 (Partial Content) response message includes the content of multiple ranges (a response to a request for multiple non-overlapping ranges), these are transmitted as a multipart message-body. The media type for this purpose is called "multipart/byteranges".
The multipart/byteranges media type includes two or more parts, each with its own Content-Type and Content-Range fields. The required boundary parameter specifies the boundary string used to separate each body-part.

所以你去。

顺便说一句，服务器位于 example.com 不会检查重叠的字节范围，并向您发送您所请求的范围......

By the way, the server at example.com does not check for overlapping byte ranges and sends you exactly the ranges that you requested...

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