示例http范围请求会话

本文介绍了示例http范围请求会话的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

是否可以向我展示带范围请求的示例http会话。 我的意思是请求和响应标头是什么？

Is it possible to show me a sample http session with range requests. I mean what would be the request and response headers?

推荐答案

以下交换是在Chrome和静态网络之间进行的服务器，检索MP4视频。

The following exchange is between Chrome and a static web server, retrieving an MP4 video.

初始请求 - 视频。请注意 Accept-Ranges 响应标头，以指示服务器具有范围标头支持：

Initial request - for the video. Note the Accept-Ranges response header to indicate the server has range header support:

GET /BigBuckBunny_320x180.mp4 Cache-Control: max-age=0 Connection: keep-alive Accept-Language: en-GB,en-US,en Host: localhost:8080 Range: Accept: text/html,application/xhtml+xml,application/xml,*/* User-Agent: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.7 ... Accept-Encoding: gzip,deflate,sdch Accept-Charset: ISO-8859-1,utf-8,* 200 OK Content-Type: video/mp4 Connection: keep-alive Last-Modified: Wed,14 Dec 2011 15:50:59 GMT ETag: A023EF02BD589BC472A2D6774EAE3C58 Transfer-Encoding: Content-Length: 64657027 Accept-Ranges: bytes Server: Brisket/1.0.1 Date: Wed,14 Dec 2011 16:11:24 GMT

范围hea检测到之前的响应中的后续请求 - 具有开放式范围的后续请求以确认支持。响应返回206状态和 Content-Range 标头，以指示响应正文中存在的字节：

Range header in previous response detected - subsequent request with open-ended range to confirm support. Response returns a 206 status and Content-Range header to indicate the bytes present in the response body:

GET /BigBuckBunny_320x180.mp4 Connection: keep-alive Accept-Language: en-GB,en-US,en Host: localhost:8080 Range: bytes=0- Accept: */* User-Agent: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.7 ... Referer: localhost:8080/BigBuckBunny_320x180.mp4 Accept-Encoding: identity Accept-Charset: ISO-8859-1,utf-8,* 206 Partial Content Content-Type: video/mp4 Connection: keep-alive Last-Modified: Wed,14 Dec 2011 15:50:59 GMT ETag: A023EF02BD589BC472A2D6774EAE3C58 Transfer-Encoding: Content-Length: 64657027 Accept-Ranges: bytes Server: Brisket/1.0.1 Date: Wed,14 Dec 2011 16:11:25 GMT Content-Range: bytes 0-64657026/64657027

捕获文件末尾的后续范围请求（可能捕获尾随元数据）：

Subsequent range request to capture the end of the file (probably to capture trailing metadata):

GET /BigBuckBunny_320x180.mp4 Connection: keep-alive Accept-Language: en-GB,en-US,en Host: localhost:8080 Range: bytes=64312833-64657026 Accept: */* If-Range: A023EF02BD589BC472A2D6774EAE3C58 User-Agent: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.7 ... Referer: localhost:8080/BigBuckBunny_320x180.mp4 Accept-Encoding: identity Accept-Charset: ISO-8859-1,utf-8,* 206 Partial Content Content-Type: video/mp4 Connection: keep-alive Last-Modified: Wed,14 Dec 2011 15:50:59 GMT ETag: A023EF02BD589BC472A2D6774EAE3C58 Transfer-Encoding: Content-Length: 344194 Accept-Ranges: bytes Server: Brisket/1.0.1 Date: Wed,14 Dec 2011 16:11:25 GMT Content-Range: bytes 64312833-64657026/64657027

用户点击视频进度条超出下载范围 - 发出范围请求以从所选位置开始播放：

User clicks in the video progress bar beyond the downloaded range - a range request is issued to begin playing from the selected position:

GET /BigBuckBunny_320x180.mp4 Connection: keep-alive Accept-Language: en-GB,en-US,en Host: localhost:8080 Range: bytes=1073152-64313343 Accept: */* If-Range: A023EF02BD589BC472A2D6774EAE3C58 User-Agent: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.7 ... Referer: localhost:8080/BigBuckBunny_320x180.mp4 Accept-Encoding: identity Accept-Charset: ISO-8859-1,utf-8,* 206 Partial Content Content-Type: video/mp4 Connection: keep-alive Last-Modified: Wed,14 Dec 2011 15:50:59 GMT ETag: A023EF02BD589BC472A2D6774EAE3C58 Transfer-Encoding: Content-Length: 63240192 Accept-Ranges: bytes Server: Brisket/1.0.1 Date: Wed,14 Dec 2011 16:11:25 GMT Content-Range: bytes 1073152-64313343/64657027