Linux 安装 http2 支持

前提：服务器中已有 git，如果没有，输入下面的命令安装

sudo apt-get install -y tmux curl vim wget htop git

curl请求一个需使用 http2 的网址，查看响应结果，为http1.1，说明暂时还不支持http2

    vagrant@homestead:~$ curl -I https://nghttp2.org/
HTTP/1.1 200 OK
Date: Tue, 28 Mar 2017 04:58:27 GMT
Content-Type: text/html
Last-Modified: Mon, 27 Mar 2017 14:39:24 GMT
Etag: "58d9241c-19ff"
Accept-Ranges: bytes
Content-Length: 6655
X-Backend-Header-Rtt: 0.001072
Strict-Transport-Security: max-age=31536000
Server: nghttpx
Via: 2 nghttpx
x-frame-options: SAMEORIGIN
x-xss-protection: 1; mode=block
x-content-type-options: nosniff

如果强制使用http2请求，无法得到响应

vagrant@homestead:~$ curl --http2 -I https://nghttp2.org/
curl: (1) Unsupported protocol

安装 nghttp2

# Get build requirements
# Some of these are used for the Python bindings
# this package also installs
sudo apt-get install g++ make binutils autoconf automake autotools-dev libtool pkg-config \
zlib1g-dev libcunit1-dev libssl-dev libxml2-dev       libev-dev libevent-dev libjansson-dev \
libjemalloc-dev cython python3-dev python-setuptools

# Build nghttp2 from source
git clone https://github.com/tatsuhiro-t/nghttp2.git
cd nghttp2
autoreconf -i
automake
autoconf
./configure
make
sudo make install

升级最新版的 curl，这里查看curl版本

cd ~
sudo apt-get build-dep curl
wget http://curl.haxx.se/download/curl-7.xx.0.tar.bz2
tar -xvjf curl-7.xx.0.tar.bz2
cd curl-7.xx.0
./configure --with-nghttp2=/usr/local --with-ssl
make
sudo make install
sudo ldconfig

尝试再次连接

# Try this out first
curl --http2 -I nghttp2.org

# If you get errors, try setting this constant
# to tell curl where to find shared libraries
LD_LIBRARY_PATH=/usr/local/lib /usr/local/bin/curl --http2 -I nghttp2.org

连接

vagrant@homestead:~/curl-7.xx.0$ LD_LIBRARY_PATH=/usr/local/lib /usr/local/bin/curl --http2 -k -I -H "Host: example.com" https://localhost
HTTP/2.0 403
server:nginx/1.11.9
date:Tue, 28 Mar 2017 05:47:10 GMT
content-type:text/html; charset=utf-8
content-length:169

打印出phpinfo
curl 的http2 显示 yes，表示成功。否则需要手动安装php的http扩展。