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elws

v1.1.2

Published

Simple auto-reconnect WebSocket decorator

Downloads

2

Readme

elws

Simple auto-reconnect WebSocket adapter

Install

npm i elws -S

Usage

const RWS = require('elws');

const client = new RWS('ws://echo.websocket.org;ws://localhost:8080');

client.onopen = function () {
	// as soon as we are connected
	// just send an Hello World! to the server
	client.send('Hello World!');
};

client.onmessage = function (event) {
	// because the server is echo.websocket.org we should receive
	// "Hello World!" right after connection
	console.log('> ', event.data);
};

// connect
client.connect();

//close
setTimeout(function(){
    console.log('timeout ');
    client.forceClose(1000);
},10000);

If ws://echo.websocket.org is unreachable, RWebSocket will try to reconnect once every 3 seconds (default) and try 3 times, then switch another url

See example.js for detailed usage.

API

The only modifications to the API are:

  • the ability to give a 3rd argument to the constructor to set the retryInterval in ms
  • the ability to give a 4rth argument to the constructor to set the retryCount
  • the #connect() method to actually create a WebSocket and connect to the server
const client = new RWS('ws://echo.websocket.org;ws://localhost:8080', null, 25000,5);

Reconnection attempts will be made once every 25 seconds, and try 5 times then switch another url. NB: the 'null' param is for the protocol because the constructor is the same as the WebSocket RFC + retryInterval

the ability to give a one argument to the constructor to set the close event 'code'

client.forceClose(1000);