iPhone/iPad Safari 是否需要视频的“接受范围"标头? [英] Does iPhone/iPad Safari require 'Accept-Ranges' header for video?
问题描述
从我的开发服务器提供在移动 Safari 中播放的视频时遇到问题.我的开发服务器不支持Accept-Ranges"标头，在阅读了一些论坛后，我发现这可能是我的问题.这是一个示例论坛帖子，上面说那.
I've been having problems serving videos from my dev server that play in mobile Safari. My dev server does not support the 'Accept-Ranges' header and after reading a few forums I've discovered that may be my problem. Here is an example forum posting saying just that.
这是正确的吗?移动 Safari 是否需要 Accept-Ranges 标头?任何人都可以指点我任何实际说明这一点的 Apple 文档吗?
Is this correct? Does mobile Safari require the Accept-Ranges header? Can anyone point me to any Apple documentation actually stating that?
谢谢.
推荐答案
我发现一些 Apple 文档说它实际上确实需要视频.
I found some Apple documentation that says that it does in fact need that for video.
为 iOS 托管媒体文件的 HTTP 服务器必须支持字节范围请求，iOS 使用它在媒体播放中执行随机访问.(字节范围支持也称为内容范围或部分范围支持.)大多数(但不是全部)HTTP 1.1 服务器已经支持字节范围请求.
HTTP servers hosting media files for iOS must support byte-range requests, which iOS uses to perform random access in media playback. (Byte-range support is also known as content-range or partial-range support.) Most, but not all, HTTP 1.1 servers already support byte-range requests.
如果您不确定您的媒体服务器是否支持字节范围请求，您可以在 OS X 中打开终端应用程序并使用curl 命令行工具从文件中下载一个短段服务器:
If you are not sure whether your media server supports byte-range requests, you can open the Terminal application in OS X and use the curl command-line tool to download a short segment from a file on the server:
curl --range 0-99 http://example.com/test.mov -o/dev/null
如果工具报告它下载了 100 字节，则媒体服务器正确处理字节范围请求.如果它下载整个文件，您可能需要更新媒体服务器.
If the tool reports that it downloaded 100 bytes, the media server correctly handled the byte-range request. If it downloads the entire file, you may need to update the media server.
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