System Configuration

Websocket Proxy with websockify and nginx

To circumvent firewalls that allow nothing but web traffic, the unix-domain socket of a joedb_server can be served as a web socket.

https://github.com/novnc/websockify

sudo apt install python3-websockify

websockify --unix-target=./server.joedb.sock 8080

location /sockets/server.joedb.sock
{
 proxy_pass http://localhost:8080/;
 proxy_http_version 1.1;
 proxy_set_header Upgrade $http_upgrade;
 proxy_set_header Connection "upgrade";
 proxy_read_timeout 5m;
 proxy_buffering off;
}

https://github.com/tg123/websockify-nginx-module might be a better approach. But it seems it may have trouble with http2: https://github.com/tg123/websockify-nginx-module/issues/24