尝试了几次用Curl来抓取HTTP2的内容

/usr/local/Cellar/curl/7.43.0/bin/curl --http2 http://www.phodal.com/
curl: (1) Unsupported protocol

发现一直提示:Unsupported protocol

后来发现少了nghttp2选项

Curl With HTTP2

于是添加with-nghttp2

 brew install curl --with-nghttp2

nghtt2是HTTP/2 C Library

接着，再次测试

 fdhuang  ⓔ test   master  ~/learing/lan  /usr/local/Cellar/curl/7.43.0/bin/curl -I -s  --http2 https://www.phodal.com/ -A google
HTTP/2.0 200
server:phodal/0.19.4
content-type:text/html; charset=utf-8
vary:Accept-Encoding
vary:Accept-Language, Cookie
content-language:en
x-ua-compatible:IE=Edge,chrome=1
date:Tue, 25 Aug 2015 05:51:01 GMT
x-page-speed:Powered By Phodal
cache-control:max-age=0, no-cache

看样子是支持了