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Troubleshooting Question

Nginx and http/2

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Last Modified: 2020-11-13
Hello, so I've set up my first Centos 8 server with Nginx. I have a good experience with Apache, but Nginx is new to me.

I am just in the testing stages, but I have a problem. I want to use http/2 with this server. I thought everything was setup correctly (Nginx built with the correct module, http2 after the listen command in the server configuration block and so on) but I have contradictory results.

If I check this test website: https://test.dmptech.it/
with Firefox or Chrome, they tell me the protocol is http/1.1.

If I test it with this https://tools.keycdn.com/http2-test it says it's http/2.
It actually says: HTTP/2 protocol is supported. ALPN extension is supported.

If I do a
 curl -I -L https://test.dmptech.it
I get this:
HTTP/2 200
server: nginx/1.16.1
date: Sat, 31 Oct 2020 19:46:35 GMT
content-type: text/html
content-length: 25
last-modified: Sat, 31 Oct 2020 19:41:34 GMT
etag: "5f9dbdee-19"
accept-ranges: bytes
So, who's actually right and is there an explanation for this? Thanks.
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