net-reconnect

Provides a tcp connection that reconnects dropped connections.

Quick Start

To install run the following from the root of your project.

$ npm install --save net-reconnect

Usage

Short version.

DurableConnection = require('net-reconnect');

var dcon = new DurableConnection(9092, 'localhost');

var socket = dcon.connect();

dcon.on('connect', function() {
  socket.write('hello world!');
});

Longer version.

Our default behavior is to reconnect after one second, then two seconds, then four . . . up to maxReconnectMillis.

The default logging method is console.log. You can change it to any function you like. If you no like logging, make it a no-op function.

DurableConnection = require('net-reconnect');

// DurableConnection takes the same arguments as net.connect.
// http://nodejs.org/api/net.html

var dcon = new DurableConnection(9092, 'localhost');

// Optionally change some defaults

dcon.reconnectMillis = 7000;     // default: 1000
dcon.maxReconnectMillis = 60000; // default: Number.MAX_SAFE_INTEGER
// we don't need no stinking logging
dcon.log = function() {};        // default: console.log

// connect takes no arguments.

var socket = dcon.connect();

// DurableConnection emits the same events as Socket.
// Register event callbacks on dcon (not socket). Otherwise
// the callbacks will be lost on reconnect.
// Hmm, maybe I could make it work either way if I copied them.

dcon.on('connect', function() {

  console.log('show time!');

  // you now have a socket connection that will never die.
  // well, it may die, but it will keep trying to reconnect forever.

  // if you want to change socket options, do it here in connect
  // otherwise they will be lost on reconnect.
  // Hmm, maybe I could make it work either way if I copied them.

  socket.setKeepAlive(true);
});

dcon.on('error', function(err) {

  // make sure to register an error handler.

  console.log('ugh!', err);
});