獲得訂閱者人數，可以方便地顯示觀看流的客戶數。
查看已經安裝好的模塊
/usr/local/nginx/sbin/nginx -V
安裝從源編譯Nginx和Nginx-RTMP所需的工具
sudo apt-get install build-essential libpcre3 libpcre3-dev libssl-dev
下載Nginx和Nginx-RTMP源碼
wget http://nginx.org/download/nginx-1.7.5.tar.gz
wget https://github.com/arut/nginx-rtmp-module/archive/master.zip
提取Nginx和Nginx-RTMP源
tar -zxvf nginx-1.7.5.tar.gz unzip master.zip
切換到Nginx目錄
cd nginx-1.7.5
添加Nginx將編譯的模塊,包括Nginx-RTMP
./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_ssl_module --with-http_xslt_module --with-http_flv_module --with-debug --with-http_gzip_static_module --add-module=../nginx-rtmp-module-master
提示錯誤：
./configure: error: the HTTP XSLT module requires the libxml2/libxslt libraries. You can either do not enable the module or install the libraries.
配置 --with-http_xslt_module 時提示 the HTTP XSLT module requires the libxml2/libxslt libraries：安裝一下擴展
sudo apt-get install libxml2 libxml2-dev libxslt-dev
編譯和安裝Nginx與Nginx-RTMP。
make
sudo make install
安裝Nginx初始化腳本
sudo wget https://raw.github.com/JasonGiedymin/nginx-init-ubuntu/master/nginx -O /etc/init.d/nginx
sudo chmod +x /etc/init.d/nginx sudo update-rc.d nginx defaults
啟動和停止Nginx生成配置文件
sudo service nginx start
sudo service nginx stop
觀看安裝是否成功：
/usr/local/nginx/sbin/nginx -V
安裝結果
configure arguments: --prefix=/usr/local/nginx --user=www --group=www --with-http_ssl_module --with-http_xslt_module --with-http_flv_module --with-debug --with-http_gzip_static_module --add-module=../nginx-rtmp-module-master
修改Nginx 配置文件添加一下信息，在位置設置統計信息頁面
location /stat { rtmp_stat all; allow 127.0.0.1; }
創建一個簡單的xsl樣式表nclients.xsl提取流用戶數
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html"/>
<xsl:param name="app"/>
<xsl:param name="name"/>
<xsl:template match="/">
<xsl:value-of select="count(//application[name=$app]/live/stream[name=$name]/client[not(publishing) and flashver])"/>
</xsl:template>
</xsl:stylesheet>
設置一個返回訂閱者數量的位置
location /nclients {
proxy_pass http://127.0.0.1/stat;
xslt_stylesheet /home/www/nclients.xsl app='$arg_app' name='$arg_name';
add_header Refresh "3; $request_uri";
}
Nginx.config 完整配置：
user www www; worker_processes 1; error_log logs/error.log debug; #pid logs/nginx.pid; events { worker_connections 65535; } http { include mime.types; default_type application/octet-stream; log_format main '[$time_local][$remote_addr][$http_x_forwarded_for] $status "$request" "$http_referer" "$http_user_agent"'; access_log logs/access.log main; sendfile on; keepalive_timeout 65; server { set $wwwroot /home/www/node/html; listen 80; server_name localhost; index index.html; root $wwwroot; access_log logs/node.access.log main; error_log logs/error.log debug; location /rtmp/stat { rtmp_stat all; rtmp_stat_stylesheet rtmpstat.xsl; } location /rtmpstat.xsl { } location /rtmp/control { rtmp_control all; } location /stat { rtmp_stat all; allow 127.0.0.1; } location /nclients { proxy_pass http://127.0.0.1/stat; xslt_stylesheet /home/www/nclients.xsl app='$arg_app' name='$arg_name'; add_header Refresh "3; $request_uri"; } location ~* /hls/.*\.m3u8$ { types { application/vnd.apple.mpegurl m3u8; } root /tmp; add_header Cache-Control no-cache; add_header Access-Control-Allow-Origin *; } location ~* /hls/.*\.ts$ { types { video/mp2t ts; } root /tmp; expires 1m; add_header Cache-Control public; add_header Access-Control-Allow-Origin *; } #error_page 404 /404.html; error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } location / { } } } rtmp { server { listen 1935; chunk_size 4096; application live { live on; record off; } } }
重啟Nginx
root@iZ239kcyg8rZ:/usr/local/nginx/conf# service nginx restart * Stopping Nginx Server... [ OK ] * Starting Nginx Server... [ OK ] root@iZ239kcyg8rZ:/usr/local/nginx/conf#
根據直播頻道訪問以下地址：
http://你的推流服務器IP/nclients?app=live&name=4001482820358
客戶端打開三個播放測試：
打開2個VLC播放流：
查看在線人數：
結束。