redis-websocket

Creates a websocket on port 15241, listens to all channels on redis, and will publish to each connection the messages from each channel they have subscribed.

To install it:

git clone https://github.com/cvweiss/redis-websocket.git
cd redis-websocket
npm install

To run it:

nodejs app.js

To listen to the public channel, from the browser client connecting to the websocket:

ws.send(JSON.stringify({'action':'sub','channel':'public'}));

Additional channels can be specified one at a time:

ws.send(JSON.stringify({'action':'sub','channel':'datastream'}));

Example:

> nodejs app.js
Sat Jul 23 2016 20:54:15 GMT+0000 (UTC) Server is listening on port 15241
Sat Jul 23 2016 20:54:20 GMT+0000 (UTC) Broadcasted to 72 clients: ping
Sat Jul 23 2016 20:54:40 GMT+0000 (UTC) Broadcasted to 122 clients: pong
Sat Jul 23 2016 20:55:02 GMT+0000 (UTC) Broadcasted to 239 clients: {"action": "test"}

An example of an nginx configuration that listens to port 2096 and passes this to the node app

server {
    listen 2096 ssl;
    listen [::]:2096 ssl;
    server_name wss.example.com;

    include snippets/self-signed.conf;
    include snippets/ssl-params.conf;

    location / {
            proxy_pass http://127.0.0.1:15241;
            proxy_http_version 1.1;
            proxy_set_header   Upgrade $http_upgrade;
            proxy_set_header   Connection "upgrade";
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

    access_log off;
}