用nginx配置websocket服务器

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系统环境

ubuntu14.04 Desktop x64

编译nginx

apt-get安装的nginx并不支持websocket，需要添加nginx-push-stream-module模块，所以我们要重新编译nginx。

编译参考模块给出的 参考地址

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git clone https://github.com/wandenberg/nginx-push-stream-module.git
# download nginx latest
wget http://nginx.org/download/nginx-1.9.10.tar.gz

# unpack, configure and build
tar zxvf nginx-1.9.10.tar.gz
cd nginx-1.9.10

# add Openssl model，generate Makefile
./configure --add-module=../nginx-push-stream-module --with-http_ssl_module

# if the HTTP rewrite module requires the PCRE library.
# sudo apt-get install libpcre3 libpcre3-dev
# sudo apt-get install openssl libssl-dev

make & sudo make install

更多config配置，使用./config –help默认安装在/usr/local/nginx下

配置websocket

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# add the push_stream_shared_memory_size to your http context
   http {
      push_stream_shared_memory_size 32M;

       # define publisher and subscriber endpoints in your server context
       server {
          location /channels-stats {
               # activate channels statistics mode for this location
               push_stream_channels_statistics;

               # query string based channel id
               push_stream_channels_path               $arg_id;
           }

           location /pub {
              # activate publisher (admin) mode for this location
              push_stream_publisher admin;

               # query string based channel id
               push_stream_channels_path               $arg_id;
           }

           location ~ /sub/(.*) {
               # activate subscriber (streaming) mode for this location
               push_stream_subscriber;

               # positional channel path
               push_stream_channels_path                   $1;
           }
       }
   }

配置一个publisher，配置一个subscriber，以id区分每一个channel也可以直接nginx加载misc/nginx.conf

测试

推荐使用curl直接测试，也可以选择使用iocat测试，需要安装node.js以及npm

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npm install iocat -g

# WebSocket Client
iocat ws://127.0.0.1:80/sub/1

# WebSocket Server
iocat -l -p 80

# or curl
curl -s -v -X POST 'http://127.0.0.1/pub?id=1' -d 'Hello World!'