On 21/07/2022 01:11, Osman Zakir wrote:
Hello, everyone.
I have this C++ server app I'm hosting on my computer (source code on
GitHub <https://github.com/DragonOsman/currency_converter> -- I'm using
Google Maps as a GUI, and it's basically a currency converter app). I
was recently having SSL issues on it, but after sorting them out I have
another issue: this error came up:
Lines 625 and 626:
handshake: unsupported protocol (SSL routines,
tls_early_post_process_client_hello)
This is likely a HTTP/2 upgrade request inside a TLS ClientHello
message, no? And if it is, how do I parse the ClientHello message to
extract it and respond?
The unsupported protocol error usually means there is a mismatch between
the supported TLS versions on the client and the server. For example if
the server only supports TLSv1.3 and the client only supports TLSv1.2.
Matt
Boost.Beast, the low-level HTTP/S and WebSocket on top of Boost.ASIO
that I'm using to handle HTTPS, doesn't support this and it also doesn't
directly support HTTP/2. For HTTP/2 I could just relegate to a server
does support it, though I'll need one that supports POST requests unless
there's a way for me to use my own server code through a HTTP/2 proxy
server (hopefully this is possible).
Anyway, would someone please help me figure out how to parse the
ClientHello for the request in question? Thanks.
