Nginx ssl reverse proxy with SNI

gistfile1.txt

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name yourdomain

    ssl_certificate           /etc/ssl/localcerts/yourdomain.crt;
    ssl_certificate_key       /etc/ssl/localcerts/yourdomain.key;
    ssl_ecdh_curve prime256v1;

    ssl_session_cache  builtin:1000  shared:SSL:10m;
    ssl_protocols  TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_ciphers 'ECDHE+aECDSA+CHACHA20:ECDHE+aRSA+CHACHA20:ECDHE+aECDSA+AESGCM:ECDHE+aRSA+AESGCM:ECDHE+aECDSA+AES256+SHA384:ECDHE+aRSA+AES256+SHA384:ECDHE+aECDSA+AES256+SHA:ECDHE+aRSA+AES256+SHA';


    location / {
      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_set_header        X-Forwarded-Proto $scheme;

      # Fix the “It appears that your reverse proxy set up is broken" error.

      proxy_pass          https://1.2.3.4;
      proxy_read_timeout  60;
      proxy_ssl_name $host;
      proxy_ssl_server_name on;
      proxy_ssl_protocols  TLSv1 TLSv1.1 TLSv1.2;
      proxy_ssl_session_reuse off;
    }

}

Excellent, worked as per your example. :-)
Thank you.