feat: add support for http/3

It was observed that waiting time was cut in half after http/3 was enabled. Plus, supporting http/3 is super easy :) Close #845
overhangio · Jun 23, 2023 · ec86930 · ec86930
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diff --git a/changelog.d/20230623_170336_regis_http3.md b/changelog.d/20230623_170336_regis_http3.md
@@ -0,0 +1 @@
+- [Feature] Add support for HTTP/3, which considerably improves performance for Open edX. (by @regisb and @ghassanmas)
diff --git a/docs/tutorials/proxy.rst b/docs/tutorials/proxy.rst
@@ -26,6 +26,7 @@ It is then your responsibility to configure the web proxy on the host. There are
  - Forward http traffic to https.
 - Set the following headers appropriately: ``X-Forwarded-Proto``, ``X-Forwarded-Port``.
 - Forward all traffic to ``localhost:81`` (or whatever port indicated by CADDY_HTTP_PORT, see above).
+- If possible, add support for `HTTP/3 <https://en.wikipedia.org/wiki/HTTP/3>`__, which considerably improves performance for Open edX (see `this comment <https:/overhangio/tutor/issues/845#issuecomment-1566964289>`__).
 
 .. note::
  If you want to run Open edX at ``https://...`` urls (as you probably do in production) it is *crucial* that the ``ENABLE_HTTPS`` flag is set to ``true``. If not, the web services will be configured to run at ``http://...`` URLs, and all sorts of trouble will happen. Therefore, make sure to continue answering ``y`` ("yes") to the quickstart dialogue question "Activate SSL/TLS certificates for HTTPS access?".
diff --git a/tutor/templates/k8s/services.yml b/tutor/templates/k8s/services.yml
@@ -14,7 +14,12 @@ spec:
  name: http
  {%- if ENABLE_HTTPS %}
  - port: 443
+ protocol: TCP
  name: https
+ # include support for http/3
+ - port: 443
+ protocol: UDP
+ name: http3
  {%- endif %}
  selector:
  app.kubernetes.io/name: caddy

diff --git a/tutor/templates/local/docker-compose.prod.yml b/tutor/templates/local/docker-compose.prod.yml
@@ -6,7 +6,11 @@ services:
  restart: unless-stopped
  ports:
  - "{{ CADDY_HTTP_PORT }}:80"
- {% if ENABLE_HTTPS and ENABLE_WEB_PROXY %}- "443:443"{% endif %}
+ {% if ENABLE_HTTPS and ENABLE_WEB_PROXY %}
+ - "443:443"
+ # include support for http/3
+ - "443:443/udp"
+ {% endif %}
  environment:
  default_site_port: "{% if not ENABLE_HTTPS or not ENABLE_WEB_PROXY %}:80{% endif %}"
  volumes: