How to redirect on the same port from http to https with nginx reverse proxy

Found something that is working well :

server {
        listen 8001  ssl;
        ssl_certificate /home/xxx/server.crt;
        ssl_certificate_key /home/xxx/server.key;
        error_page 497 301 =307 https://$host:$server_port$request_uri;
        location /{
            proxy_pass http://localhost:8000;
            proxy_redirect off;
            proxy_set_header Host $host:$server_port;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Ssl on;
        }
}

This worked for me:

server {
listen       80;
server_name  localhost;
...
if ($http_x_forwarded_proto = "http") {
      return 301 https://$server_name$request_uri;
}
location / {
    proxy_set_header X-Forwarded-Host $host;
    proxy_set_header X-Forwarded-Server $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_pass http://localhost:8080;
}

...
}

Are you sure your solution is working? It is listening for 8001 ssl. Will it accept http request?

I do it this way:

server {
    listen   80;
    server_name  yourhostname.com;

    location / {
            rewrite ^(.*) https://yourhostname.com:8001$1 permanent;
    }
}

Then goes your config:

server {
    listen 8001  ssl;
    ssl_certificate /home/xxx/server.crt;
    ssl_certificate_key /home/xxx/server.key;
    location / {
        proxy_pass https://localhost:8000;
        proxy_redirect off;
        proxy_set_header Host $host:$server_port;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Ssl on;
        proxy_set_header  X-Forwarded-Proto  https;
    }
}