# For more information on configuration, see:
#   * Official English Documentation: http://nginx.org/en/docs/
#   * Official Russian Documentation: http://nginx.org/ru/docs/

# 运行nginx服务器用户
user nginx;

# 允许生成的 worker process 数
worker_processes auto;

# 错误日志的存放路径
error_log /var/log/nginx/error.log;

# nginx 进程 PID 存放路径
pid /run/nginx.pid;

# 配置文件的引入
# Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;

# 最大连接数
events {
    worker_connections 1024;
}

http {
    # 日志格式
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    # 自定义服务日志
    access_log  /var/log/nginx/access.log  main;

    # 允许 sendfile 方式传输文件
    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 2048;

    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;

    # Load modular configuration files from the /etc/nginx/conf.d directory.
    # See http://nginx.org/en/docs/ngx_core_module.html#include
    # for more information.
    include /etc/nginx/conf.d/*.conf;

    map $http_upgrade $connection_upgrade {                             
        default upgrade;                                                
        '' close;                                                       
    } 

    server {
        listen       80 default_server;
        listen       [::]:80 default_server;
        server_name  _;
        root         /usr/share/nginx/html;

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        location /atlas/streaming {
            proxy_pass http://127.0.0.1:5002;

            proxy_read_timeout 300s;                                    
                                                                        
            proxy_set_header Host $host;                                     
            proxy_set_header X-Real-IP $remote_addr;                    
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                                                            
            proxy_http_version 1.1;                         
            proxy_set_header Upgrade $http_upgrade;         
            proxy_set_header Connection $connection_upgrade;
        }

        location /atlas/backend {
            proxy_pass http://127.0.0.1:5001;
         }

        error_page 404 /404.html;
            location = /40x.html {
        }

        error_page 500 502 503 504 /50x.html;
            location = /50x.html {
        }
    }

# 根据客户端请求中的$http_upgrade的值创建新的$connection_upgrade
# 默认会upgrade，为空则变成close
map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
}

# 正向代理；监听websocket
upstream websocket {
    #ip_hash;

    # 转发到服务器上相应的ws端口
    server localhost:3344;
}

server {
    listen       80 default_server;
    listen       [::]:80 default_server;
    server_name  _;
    root         /usr/share/nginx/html;

    # Load configuration files for the default server block.
    include /etc/nginx/default.d/*.conf;

    location /atlas/streaming {

        # 转发到目的地址
        proxy_pass http://127.0.0.1:5002;

        # nginx会等待多长时间来获得请求的响应。 这个时间不是获得整个response的时间，而是两次reading操作的时间。
        proxy_read_timeout 300s;    

        # 
        proxy_send_timeout 300s;                                
                                                                    
        proxy_set_header Host $host;                                     
        proxy_set_header X-Real-IP $remote_addr;                    
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        # 升级http1.1到websocket                          
        proxy_http_version 1.1;                         
        proxy_set_header Upgrade $http_upgrade;         
        proxy_set_header Connection $connection_upgrade;
    }


    }
}