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Node.js Re-connecting Socket
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// | |
// Simple example of using net.Socket but here we capture the | |
// right events and attempt to re-establish the connection when | |
// is is closed either because of an error establishing a | |
// connection or when the server closes the connection. | |
// | |
// Requires | |
var net = require('net'); | |
// Create socket | |
var port = 55555; | |
var host = 'localhost'; | |
var timeout = 1000; | |
var retrying = false; | |
// Functions to handle socket events | |
function makeConnection () { | |
socket.connect(port, host); | |
} | |
function connectEventHandler() { | |
console.log('connected'); | |
retrying = false; | |
} | |
function dataEventHandler() { | |
console.log('data'); | |
} | |
function endEventHandler() { | |
// console.log('end'); | |
} | |
function timeoutEventHandler() { | |
// console.log('timeout'); | |
} | |
function drainEventHandler() { | |
// console.log('drain'); | |
} | |
function errorEventHandler() { | |
// console.log('error'); | |
} | |
function closeEventHandler () { | |
// console.log('close'); | |
if (!retrying) { | |
retrying = true; | |
console.log('Reconnecting...'); | |
} | |
setTimeout(makeConnection, timeout); | |
} | |
// Create socket and bind callbacks | |
var socket = new net.Socket(); | |
socket.on('connect', connectEventHandler); | |
socket.on('data', dataEventHandler); | |
socket.on('end', endEventHandler); | |
socket.on('timeout', timeoutEventHandler); | |
socket.on('drain', drainEventHandler); | |
socket.on('error', errorEventHandler); | |
socket.on('close', closeEventHandler); | |
// Connect | |
console.log('Connecting to ' + host + ':' + port + '...'); | |
makeConnection(); | |
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