nginx配置多域名 https 转发

场景：

1、基于https的请求，是不能够请求http的非安全内容，所以我们的请求也需要对应的http
2、假设现在 web服务跟后台服务部署正在同一台机器上

web应用域名 a.xxx.com
后台服务网关域名 b.xxx.com

nginx配置文件：

user  root;
worker_processes  4;

worker_cpu_affinity 0001 0010 0100 1000;

events {
    use epoll;
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;


    sendfile        on;

    keepalive_timeout  65;

    gzip  on;


    server {
        listen       80;
        server_name  a.xxx.com;
        location / {
            root dq-game-web ;
            try_files $uri $uri/ @rewrite;
        }

	#301重定向 让http请求转定向到https地址
        return      301 https://$server_name$request_uri;
#  location @rewrite {
#            rewrite ^.*$ /index.html last;
#        }


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

   server {
        listen       443 ssl;
        server_name a.xxx.com;

        ssl_certificate      /usr/local/nginx/ssl/xxx.pem;
        ssl_certificate_key  /usr/local/nginx/ssl/xxx.key;

        ssl_session_cache    shared:SSL:1m;
        ssl_session_timeout  5m;

        ssl_ciphers  HIGH:!aNULL:!MD5;
        ssl_prefer_server_ciphers  on;

        location / {
            add_header Access-Control-Allow-Methods *;
            add_header Access-Control-Allow-Origin $http_origin;

            root  xxx;
            try_files $uri $uri/ @rewrite;

        }

        location @rewrite {
            rewrite ^.*$ /index.html last;
        }

   }


   server {
        listen       443 ssl;
        server_name  b.xxxt.com;

        ssl_certificate      /usr/local/nginx/ssl/xxx.pem;
        ssl_certificate_key  /usr/local/nginx/ssl/xxx.key;

        ssl_session_cache    shared:SSL:1m;
        ssl_session_timeout  5m;

        ssl_ciphers  HIGH:!aNULL:!MD5;
        ssl_prefer_server_ciphers  on;
        
  location / {
            proxy_redirect off;
            proxy_set_header   Host    $host;
            proxy_set_header   X-Real-IP   $remote_addr;
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
            #转到到本地网关
            proxy_pass http://localhost:18889;
        }

   }
}