websocket-remote-control-server

websockets-remote-control-server

Websockets-remote-control is a JS project that provides two libraries: a client and a server that can link two devices through websockets.

• Client
• Server (this library)

This library initializes the Websockets server. Maintains a list of connected clients, in addition to running validations and listening to events.

Example

In the /demo folder of the client library

Installation

npm install websocket-remote-control-server

Usage

After installing the library:

Create and run a web server. You can use Express following our example.

Require the websockets-remote-control-server and initialize it:

// app.js (in our example)

let WebControlServer = require('websocket-remote-control-server');
let webcontrol = new WebControlServer(server);

And done! Now, you should install and use the Client to be able to listen and answer to the previously listed events.

How it works

When a client connects (through a socket), the server is attentive of the following events:

• getSpecialNumber: Sends the socket id and the Special Number to the screen. The Special Number is an auto-generated token used for pairing both devices.

• linkController: Validates that the screen and the controller are correctly paired.

• alreadyLinked: Emits an event alerting the involved sockets that the client which is trying connect is already paired.

• data: Validates that the data received is an url and is from an existent client. If the validation is correct, the data is sended to the client.

• unpair: Deletes the controller associated with a specific specialNumber from the list of controller clients and notifies the client that the session is no longer valid.