This question already has an answer here:
I read in the following passage in this DigitalOcean article, concerning HTTP/2:
Even though HTTP/2 does not require encryption, developers of two most popular browsers, Google Chrome and Mozilla Firefox, stated that for the security reasons they will support HTTP/2 only for HTTPS connections. Hence, if you decide to set up servers with HTTP/2 support, you must also secure them with HTTPS.
Okay, let's say I install OpenSSL on port 443 and use TLS to wrap each packet with an encryption wrapper.
Will I still have HTTPS if I didn't setup an SSL certificate for each domain and associated it with OpenSSL? and if I will, will this be valid in Chrome/Firefox?