跨域名要带 http 的各种头，
试试这种呢，感觉 80 跳 443 可能有问题，

location /top/ {
proxy_pass_header Server;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Scheme $scheme;
proxy_pass https://abs.com/top/;
}