Confused about using http/1 when server.proxy is used

[hai-x]

Documentation is

• Missing
• Outdated
• Confusing
• Not sure?

Explain in Detail

Enable TLS + HTTP/2. Note this downgrades to TLS only when the server.proxy option is also used.
from https://vitejs.dev/config/server-options.html#server-https

From code

vite/packages/vite/src/node/http.ts

Line 104 in 9d7d45e

if (proxy) {

As shown in the title, I am confused about using http/1 when server.proxy is used and why can't use http/2.

Your Suggestion for Changes

Use http/2 when server.proxy is used

Reproduction

No response

Steps to reproduce

No response

[sapphi-red]

It's because http-proxy doesn't support http2.

[hai-x]

It's because http-proxy doesn't support http2.

Thank you. I just found related issue #484. Is there any approach? such as using http2-proxy when proxy is used.

[sapphi-red]

See #7611 (reply in thread)

[hai-x]

See #7611 (reply in thread)

Thank you for your guidance, I will try to use existing vite plugin or create one new plugin that match my own.

[sapphi-red]

I'll close this issue as a duplicate of #4184.