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

upstream back_end {
    server military-system:8049; # appserver_ip:ws_port
}

server {
    listen       3001;
    listen  [::]:3001;
    server_name  localhost;

    # 后台服务配置，配置了这个location便可以通过访问		
    location ^~ /military {
        proxy_pass              http://back_end/military/;
        proxy_set_header        Host $host:3001;
        proxy_set_header        X-Real-IP $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
        location ^~ /military/websocket {
            proxy_pass          http://back_end/military/websocket/;
            proxy_read_timeout  300s;
            proxy_send_timeout  300s;
            
            proxy_set_header        Host $host:3001;
            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;
        }
    }

    #解决Router(mode: 'history')模式下，刷新路由地址不能找到页面的问题
    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
        if (!-e $request_filename) {
            rewrite ^(.*)$ /index.html?s=$1 last;
            break;
        }
    }
}