Mysterious Authentication Failure

Hi :)

I stumbled upon this problem when began using Junction :

events.js:168
      throw err;
      ^

Error: Uncaught, unspecified "error" event. (XMPP authentication failure)
    at Client.emit (events.js:166:17)
    at Client.onRawStanza (/home/aria/Projects/simpeg-extended/server/node_modules/node-xmpp/lib/xmpp/client.js:124:18)
    at emitOne (events.js:96:13)
    at Client.emit (events.js:191:7)
    at Client.Connection.onStanza (/home/aria/Projects/simpeg-extended/server/node_modules/node-xmpp/lib/xmpp/connection.js:237:14)
    at StreamParser.<anonymous> (/home/aria/Projects/simpeg-extended/server/node_modules/node-xmpp/lib/xmpp/connection.js:136:14)
    at emitOne (events.js:96:13)
    at StreamParser.emit (events.js:191:7)
    at Parser.<anonymous> (/home/aria/Projects/simpeg-extended/server/node_modules/node-xmpp/lib/xmpp/stream_parser.js:42:22)
    at emitOne (events.js:96:13)

I used code from the examples like this :

let junction = require('junction')
let Message = junction.elements.Message
let Presence = junction.elements.Presence

var xmpp = junction.create()
    .use(junction.messageParser())
    .use(junction.presenceParser());

xmpp.use(junction.message(function(handler) {
    handler.on('chat', function(stanza) {
        var msg = new Message(stanza.from);
        msg.c('body', {}).t('Hello ' + stanza.from + '!\n\n' + 'You said: ' + stanza.body);
        stanza.connection.send(msg);
    });
}));

xmpp.use(junction.serviceUnavailable())
    .use(junction.errorHandler());

xmpp.connect({ jid: 'jin_simpeg@localhost', password: 'simpeg123456' }).on('online', function() {
    console.log('connected as: ' + this.jid);
    this.send(new Presence());
});

I use Node.js 7.10. I hope Junction is still compatible with that version.

Start by reproducing the authentication failure with the shown junction.create() setup and the xmpp.connect() credentials, then inspect Junction's connection and error-handling entry points. Compare the result with the Node.js 7.10 compatibility question; done means identifying the cause and documenting or correcting the authentication failure.