Parsing ClientHello Message for HTTP/2 Upgrade Request -- How do I do this?

Osman Zakir osmanzakir90 at
Fri Aug 28 17:52:09 UTC 2020

Hi, everyone.

As I said in the subject, I want to know how to parse the ClientHello message to find the HTTP/2 upgrade request if it's there.  I'm using Boost.BEAST for HTTPS, but it only has support for HTTP/1.1 so I need to write code for supporting HTTP/2 myself if I want that.

I also want to know how to find it, but I found something for that here:

I host the app on my own computer.  The source code is on GitHub here: .  The URL is .  Any help is appreciated.  Thanks.
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