map $ssl_preread_server_name $name {
        xxxx.com tcpstream;
        default https_default_backend;
    }
    upstream tcpstream{
        server 127.0.0.1:8082;
    }
    upstream https_default_backend {
        server 127.0.0.1:8082;
    }
    server {
        listen 8080;
		proxy_connect_timeout 1000s;
        proxy_timeout 1000s;
        # 使用域名，或者使用ip:proxy_pass tcpstream
        proxy_pass $name;
        ssl_preread on;
    }