Watches your node.js connections and automatically reconnects them when things fail.
Connections in node.js are flaky by nature - a disconnection will throw a fatal error (unless your code is watching for them), potentially bringing down your entire application. Babysitter transparently catches these failures and automatically attempts to reconnect the problem connection, resulting in a more reliable application.
Babysitter can watch any EventEmitter that emits connect and close events.
var Babysitter = require('babysitter');
// Let's give the babysitter something to do besides watch tv
var sitter = Babysitter.watch( function( options, done ){
// This function is responsible for setting up the connection, both
// on the initial attempt and any reconnect attempts.
var connection = net.createConnection( options.port, options.host );
// Give the connection back to the babysitter. Note that it's unnecessary to
// wait until the connect event for the connection - babysitter handles this transparently
done( null, connection );
}), {
// Options to be passed to the connect function
host: 'localhost',
port: '8000'
});
// Babysitter emits connect, close, end, and backoff
sitter.on( 'connect', function(){
console.log('connect!');
});
sitter.on( 'close', function(){
console.log('close!');
});All code licensed under the MIT license.