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[PoC]: Support WebSocket connection upgrades #78

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5 changes: 5 additions & 0 deletions nginx/conf.d/django.conf.d/locations/root.conf
Original file line number Diff line number Diff line change
Expand Up @@ -15,4 +15,9 @@ location / {
# incorrectly/maliciously.
proxy_set_header X-Forwarded-Protocol "";
proxy_set_header X-Forwarded-Ssl "";

# WebSocket support
proxy_http_version 1.1;
proxy_set_header Upgrade $upgrade;
proxy_set_header Connection $connection_upgrade;
}
17 changes: 17 additions & 0 deletions nginx/conf.d/django.conf.d/maps/connection_upgrade.conf
Original file line number Diff line number Diff line change
@@ -0,0 +1,17 @@
# Ensure the necessary headers get passed through by Nginx when the connection
# is being upgraded to WebSockets. The 'Upgrade' and 'Connection' headers are
# considered 'hop-by-hop' headers (RFC 2068) and so are not forwarded by proxies
# by default. We *do* forward those headers *if* the 'Upgrade' header suggests
# that this connection is being upgraded to WebSockets.

map $http_upgrade $upgrade {
# Maps do case-insensitive matching
websocket $http_upgrade;
default "";
}

map $http_upgrade $connection_upgrade {
websocket $http_connection;
# By default Nginx sends a 'Connection: close' header, we keep doing that
default close;
}