can not work with http2 ssl enabled!

[calvin2021y]

return 502 Bad Gateway, remove http2 from nginx listen work.

[tg123]

I am sure ssl is fine
but seems conflict with http2

[tg123]

anther question is why do you want websock over http2?

[calvin2021y]

I try avoid use websock over http2, but nginx is not able to disable http2 for one vhost, so you have to disable all vhosts http2 or you don't get to use websockify_pass.

If nginx server http2 enabled, the client send http 1.1 request still get this error. disable http2 for all vhosts fix the problem. (then all your site has slow http 1.1).