[chromium-discuss] Chrome ver. 67 to switch from HTTPS to QUIC using alt-svc header

[N P]

Hello,

I'm fairly new to QUIC.

1. I have the quic toy client & server running. I'm able to use QUIC to
get files from the quic server.
2. I'm also able to "force" the chrome browser to get files from the toy
quic server using:
3. ./out/Default/chrome --disable-gpu --remote-debugging-port=9222
user-data-dir=/tmp/chrome-profile --no-proxy-server --enable-quic
--origin-to-force-quic-on=www.example.org:*443*
--host-resolver-rules='MAP www.example.org *IP_OF_QUIC_SERVER*:*6121*'
https://www.example.org

I want to use HTTP headers to get chrome to switch between HTTPS & QUIC by
itself, without forcing it. I used NGINX to handle the initial HTTPS
requests & return a "200" with the following header config in the
nginx.conf file:

*add_header Alt-Svc "quic=:6121; persist=1; v=44,39";*

The first request to the domain is over HTTPS (to be expected), but I
was expecting that every subsequent request to the domain would be over
QUIC (because of the Alt-Svc header). But the browser doesn't make the
switch.

I've tried using the IETF standard: "hq" as the alt-svc header, but that
didn't help.

I can confirm that certs isn't an issue, since I'm able to get content when
QUIC is "forced" using the command I mentioned in #3 above.

Any ideas, what am I missing?

Thank you,

NP