Changing the NGINX config statement from `listen 80;` to `listen 80 http2;`

Question

Inside NGINX config file:

http {

        server {
                listen 80;
                server_name sample.com;

                location / {
                        proxy_pass http://127.0.0.1:8080;
                }
        }

        server {
                listen 80;
                server_name example.com;

                location / {
                        proxy_pass http://127.0.0.1:8081;
                }
        }
}

The above config works fine and web browser is able to access websites and show their content.

But, when I change listen 80; statement to listen 80 http2;, the web browser downloads a file rather than showing webpages of sample.com and example.com. Why is that?

Answer 1

Content-Type: text/html should in Response Headers (like below)

Maybe you should config http2's Response Headers