Nginx流媒体支持配置

Nginx是一个短小精悍，且性能超强的Web服务器，同时也可以用作反向代理服务器以及邮件服务器。除此之外Nginx也可以用于搭建一个简易的流媒体服务器。基于此，本文描述了在Nginx 1.8之上构建一个简易的流媒体服务器，同时通过反向代理的方式将其代理至流媒体服务器。

有关Nginx相关的基础知识
Linux 6下安装编译安装Nginx
Nginx 概述及日常管理
Nginx基于IP，端口，域名配置虚拟主机
Linux 下配置nginx到php的连接

一、当前的运行环境及安装文件

1、当前的运行环境
# more /etc/redhat-release 
CentOS release 6.5 (Final)

# /u01/app/nginx/sbin/nginx -v
nginx version: nginx/1.8.1

2、安装文件下载
http://download.csdn.net/detail/robinson_0612/9738948

3、安装文件位置
# pwd
/u01/soft

# ls
yamdi-1.9.tar.gz      nginx_mod_h264_streaming-2.2.7.tar.gz      nginx-1.8.1

二、安装及重新编译Nginx

1、安装yamdi
# tar -xf yamdi-1.9.tar.gz 
# cd yamdi-1.9
# make && make install
        gcc -O2 -Wall yamdi.c -o yamdi
        install -m 0755 -o root yamdi /usr/local/bin

2、安装nginx_mod_h264_streaming
# cd /u01/soft
# tar -xf nginx_mod_h264_streaming-2.2.7.tar.gz 

# vim /u01/soft/nginx_mod_h264_streaming-2.2.7/src/ngx_http_streaming_module.c

###注释掉158-161行
    157   /* TODO: Win32 */
    158 /*  if (r->zero_in_uri)
    159   {
    160     return NGX_DECLINED;
    161   }
    162 */      

###否则出现如下错误
# make 

In file included from /usr/local/src/nginx_mod_h264_streaming-2.2.7/src/ngx_http_h264_streaming_module.c:2:
/usr/local/src/nginx_mod_h264_streaming-2.2.7/src/ngx_http_streaming_module.c: 在函数‘ngx_streaming_handler’中:
/usr/local/src/nginx_mod_h264_streaming-2.2.7/src/ngx_http_streaming_module.c:158: 错误：
‘ngx_http_request_t’没有名为‘zero_in_uri’的成员
make[1]: *** [objs/addon/src/ngx_http_h264_streaming_module.o] 错误 1
make[1]: Leaving directory `/usr/local/src/nginx-1.8.1'
make: *** [build] 错误 2

3、查看nginx当前已编译的模块以及添加模块
# /u01/app/nginx/sbin/nginx -V
nginx version: nginx/1.8.1
built by gcc 4.4.7 20120313 (Red Hat 4.4.7-17) (GCC) 
built with OpenSSL 1.0.1e-fips 11 Feb 2013
TLS SNI support enabled
configure arguments: 
        --prefix=/u01/app/nginx --sbin-path=/u01/app/nginx/sbin/nginx --conf-path=/u01/app/nginx/conf/nginx.conf 
        --error-log-path=/u01/app/nginx/logs/error.log --http-log-path=/u01/app/nginx/logs/access.log                      
        --pid-path=/u01/app/nginx/nginx.pid --lock-path=/u01/app/nginx/nginx.lock 
        --http-client-body-temp-path=/u01/app/nginx/tempcache/client_temp 
        --http-proxy-temp-path=/u01/app/nginx/tempcache/proxy_temp 
        --http-fastcgi-temp-path=/u01/app/nginx/tempcache/fastcgi_temp 
        --http-uwsgi-temp-path=/u01/app/nginx/tempcache/uwsgi_temp 
        --http-scgi-temp-path=/u01/app/nginx/tempcache/scgi_temp --user=nginx --group=nginx 
        --with-http_ssl_module --with-http_realip_module --with-http_addition_module --with-http_sub_module 
        --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module 
        --with-http_gzip_static_module --with-http_random_index_module --with-http_secure_link_module 
        --with-http_stub_status_module --with-http_auth_request_module --with-mail --with-mail_ssl_module 
        --with-file-aio --with-http_spdy_module --with-ipv6

###将nginx_mod_h264_streaming模块添加到nginx      
# cd /u01/soft/nginx-1.8.1
# ./configure  \
--prefix=/u01/app/nginx --sbin-path=/u01/app/nginx/sbin/nginx                                                \
--conf-path=/u01/app/nginx/conf/nginx.conf --error-log-path=/u01/app/nginx/logs/error.log                         \
--http-log-path=/u01/app/nginx/logs/access.log --pid-path=/u01/app/nginx/nginx.pid                                \      
--lock-path=/u01/app/nginx/nginx.lock --http-client-body-temp-path=/u01/app/nginx/tempcache/client_temp      \
--http-proxy-temp-path=/u01/app/nginx/tempcache/proxy_temp                                                   \
--http-fastcgi-temp-path=/u01/app/nginx/tempcache/fastcgi_temp                                               \
--http-uwsgi-temp-path=/u01/app/nginx/tempcache/uwsgi_temp                                                   \
--http-scgi-temp-path=/u01/app/nginx/tempcache/scgi_temp --user=nginx --group=nginx                          \
--with-http_ssl_module --with-http_realip_module --with-http_addition_module --with-http_sub_module          \
--with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module               \
--with-http_gzip_static_module --with-http_random_index_module --with-http_secure_link_module                \
--with-http_stub_status_module --with-http_auth_request_module --with-mail --with-mail_ssl_module            \
--with-file-aio --with-http_spdy_module --with-ipv6                                                          \
--add-module=/u01/soft/nginx_mod_h264_streaming-2.2.7      ###使用add-module添加模块

# make

# /u01/app/nginx/sbin/nginx -s stop
# cp /u01/app/nginx/sbin/nginx /u01/app/nginx/sbin/nginx.bk.0116

### 替换nginx 二进制文件
# cp /u01/soft/nginx-1.8.1/objs/nginx /u01/app/nginx/sbin/nginx

# service nginx start
Starting nginx:                                            [  OK  ]

# /u01/app/nginx/sbin/nginx -V
nginx version: nginx/1.8.1
built by gcc 4.4.7 20120313 (Red Hat 4.4.7-17) (GCC) 
built with OpenSSL 1.0.1e-fips 11 Feb 2013
TLS SNI support enabled
configure arguments: --prefix=/u01/app/nginx  
    ................
--add-module=/u01/soft/nginx_mod_h264_streaming-2.2.7

三、Nginx配置文件摘录(供参考)

### Nginx配置文件
# more /u01/app/nginx/conf/nginx.conf 
worker_processes 8;
user    nobody;

error_log       /u01/app/nginx/logs/error.log;

events {
        use epoll;
        worker_connections 65535;
        multi_accept on;
}


http {
        include mime.types;
        default_type application/octet-stream;
        charset utf-8;
        log_format  main  '$remote_addr  [$time_local] "$host $request" '
                         '$status $body_bytes_sent "$http_referer" '
                         '"$http_user_agent" "$http_x_forwarded_for"';

        server_names_hash_bucket_size 128;
        client_header_buffer_size 64k;
        client_max_body_size 50m;
        client_body_buffer_size 512k;
        large_client_header_buffers 4 64k;

        server_tokens off;
        sendfile on;

        tcp_nopush on;
        tcp_nodelay on;

        keepalive_timeout 10;

        ssl_session_cache shared:SSL:50m;
        ssl_session_timeout 5m;

        proxy_connect_timeout 5;
        proxy_read_timeout 60;
        proxy_send_timeout 5;
        proxy_buffer_size 16k;
        proxy_buffers 4 64k;
        proxy_busy_buffers_size 128k;
        proxy_temp_file_write_size 128k;
        proxy_temp_path /u01/app/nginx/tempcache/proxy_temp;
        proxy_cache_path /u01/app/nginx/tempcache/proxy_cache_dir levels=1:2 keys_zone=cache_one:2000m
         inactive=10d max_size=30g;

        gzip on;
        gzip_min_length 1k;
        gzip_buffers 4 16k;
        gzip_comp_level 6;
        gzip_types text/plain text/css text/xml text/javascript application/json application/x-javascript 
        application/xml application/xml+rss;

        open_file_cache max=204800 inactive=20s; 
        open_file_cache_min_uses 2; 
        open_file_cache_valid 30s; 
        open_file_cache_errors on;

        include conf.d/*.conf;
}    

# more /u01/app/nginx/conf/conf.d/stream.conf 
 server {
        listen       9091;

        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   /u02/upload_video;
            index  index.html index.htm;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
}

###反向代理端的配置
# /opt/nginx/sbin/nginx -v
nginx version: nginx/1.5.13
# more /opt/nginx/conf/conf.d/http-www.conf
upstream stream_srv {
    server 10.24.249.21:9091 max_fails=3 fail_timeout=30s;
    keepalive 32;
}

server {
        listen 80;
        server_name www.abc.com;
        access_log /log/nginx/http-access.log;
        error_log /log/nginx/http-error.log;

          location  /stream {
                proxy_set_header Host $host;
                proxy_set_header x-for $remote_addr;
                proxy_set_header x-server $host;
                proxy_set_header x-agent $http_user_agent;
                proxy_pass http://stream_srv;
                }
}

###测试
http://www.abc.com/stream/test.mp4

四、Nginx模块动态增加

NGINX 1.9.11开始增加加载动态模块支持，从此不再需要替换nginx文件即可增加第三方扩展。
目前官方只有几个模块支持动态加载，第三方模块需要升级支持才可编译成模块。

# ./configure --help | grep dynamic
  --with-http_xslt_module=dynamic            enable dynamic ngx_http_xslt_module
  --with-http_image_filter_module=dynamic    enable dynamic ngx_http_image_filter_module
  --with-http_geoip_module=dynamic           enable dynamic ngx_http_geoip_module
  --with-mail=dynamic                        enable dynamic POP3/IMAP4/SMTP proxy module
  --with-stream=dynamic                      enable dynamic TCP proxy module
  --add-dynamic-module=PATH                  enable dynamic external module

如上可看出官方支持5个动态模块编译，需要增加第三方模块，使用参数--add-dynamic-module=即可。

NGINX动态模块语法，此配置方法和Apache httpd大同小异
        load_module

        Default: —

        配置段: main

        说明：版本必须>=1.9.11

        示例：
                load_module modules/ngx_mail_module.so;