我如何知道我的网站是通过HTTP还是HTTP / 2提供？

Question

是否有命令或服务告诉我我的网站是通过HTTP还是HTTP / 2提供服务。

我找到了这个工具：HTTP/2 Test | A simple HTTP/2.0 test tool，但它只告诉我我的网站是否支持HTTP / 2，而不是它是否已经使用HTTP / 2。

这些也是Chrome扩展程序：HTTP/2 and SPDY indicator，它告诉我HTTP / 2已在我的网站上启用，但据我所知，我的Apache版本甚至不支持它。

有没有办法确定？谢谢！

Answer 1

Apache不必支持它。 Chrome扩展程序会读取HTTP标头以确定该标头。

另一种方法是查看Chrome或Firefox中的网络选项卡>标题>响应标题>查看源。在那里可以看到标题。它应该是“HTTP / 2”或者我现在不记得的那种。

最简单：您可以使用curl -I <your site>将HTTP响应作为第一行。

HTTP/2.0 200
server:nginx
date:Fri, 29 Apr 2016 14:31:40 GMT
content-type:text/html; charset=utf-8
content-length:7629
last-modified:Thu, 07 Apr 2016 02:41:08 GMT
....

Answer 2

您也可以尝试--http2或--http2-prior-knowledge。这些将强制webiste使用HTTP / 2.0：

从卷曲手册：

--http2-prior-knowledge
              (HTTP) Tells curl to issue its non-TLS HTTP requests using HTTP/2 without HTTP/1.1 Upgrade.  It  requires
              prior  knowledge  that  the server supports HTTP/2 straight away. HTTPS requests will still do HTTP/2 the
              standard way with negotiated protocol version in the TLS handshake.

              --http2-prior-knowledge requires that the underlying libcurl was built to  support  HTTP/2.  This  option
              overrides --http1.1 and -0, --http1.0 and --http2. Added in 7.49.0.

--http2
              (HTTP) Tells curl to use HTTP version 2.

              See also --no-alpn. --http2 requires that the underlying libcurl was built to support HTTP/2. This option
              overrides --http1.1 and -0, --http1.0 and --http2-prior-knowledge. Added in 7.33.0.

Answer 3

对于使用Nginx的人，您可以查看通常位于/var/log/nginx/access.log的访问日志，并查找类似的行

167.220.232.9 - - [12/Feb/2018:15:09:04 +0800] "GET / HTTP/2.0" 200 2546 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299"