The server works by using HTML5 Websockets (https://developer.mozilla.org/en-US/docs/WebSockets https://developer.mozilla.org/en-US/docs/WebSockets) which allow

The server works by using HTML5 Websockets (https://developer.mozilla.org/en-US/docs/WebSockets https://developer.mozilla.org/en-US/docs/WebSockets) which allows browsers to do full duplex communication with the servers (they can push and receive messages without having to poll). The implementation of the multiplayer itself is very simple and consists of these steps: * Pair up players using a map from one session to another. * Start an instance of https://github.com/bfirsh/jsnes https://github.com/bfirsh/jsnes on Player 1 * Screenshot the canvas of JSNES using toDataUrl. * Send the screenshot to Player 2 and render it into a canvas. * Send Player 2's keyup and keydown event's to Player 1. The communication over the WebSocket is very fast, the screenshot is being sent at 30 frames per second. Melody is just a small framework to make WebSockets easier to work with.