denizozger / node-websocket

A Node server requesting & receiving data by HTTP callls, and forwarding it to connected clients via WebSockets

Node.js Websocket Server

This Node application perioducally receives JSON data from another web application, and serves it to clients connected to it.

Running Locally

Install ZMQ first

brew install zeromq

Alternatively: http://zeromq.org/intro:get-the-software

sudo npm install
node --harmony server.js

Module versions might be old when you install this application, so especially if you get node-gyp compilation errors after installing modules, try updating module versions of related packages on package.json

How it works

Please see node-fetcher and node-dataprovider implementations too, all three applications work together - although not necessarily.

1. A client connects to the application. ie. ws://node-websocket/some-key
2. App checks if it has some-key's data on memory
3. If some-key's data is on memory already, it serves it to connected client
4. If some-key's data is not found, then requests it with via a socket from a specific server, ie. node-fetcher
5. Waits to receive data for some-key, over a socket. When data is received, transmits it to clients who are connected via some-key.

Go to localhost:5000/?test1 for a demo

When you have all three applications, you should start node-socketio as:

PORT=5000 node --harmony server.js