How can i handle multiple imap connections in node.js? - node.js

Question

how can i monitor multiple email accounts using imap at the same time using node.js?
I have a program to get notifications for single account using node-imap module and parsed emails using mail-parser.
var Imap = require('imap'),
inspect = require('util').inspect;
var MailParser = require('mailparser').MailParser;
var fs = require('fs');
var imap = new Imap(
{
user: 'any_email_address',
password: 'password',
host: 'imap.host.com',
port: 993,
tls: true,
tlsOptions:
{
rejectUnauthorized: false
}
});
function openInbox(cb)
{
imap.openBox('INBOX', true, cb);
}
var messages = []
imap.once('ready', function ()
{
openInbox(function (err, box)
{
console.log("open")
if (err) throw err;
imap.search(['ALL', []], function (err, results)
{
if (err) throw err;
var f = imap.fetch(results,
{
bodies: ''
});
f.on('message', function (msg, seqno)
{
var mailparser = new MailParser()
msg.on('body', function (stream, info)
{
stream.pipe(mailparser);
mailparser.on("end", function (mail)
{
fs.writeFile('msg-' + seqno + '-body.html', mail.html, function (err)
{
if (err) throw err;
console.log(seqno + 'saved!');
});
})
});
msg.once('end', function ()
{
console.log(seqno + 'Finished');
});
});
f.once('error', function (err)
{
console.log('Fetch error: ' + err);
});
f.once('end', function ()
{
console.log('Done fetching all messages!');
imap.end();
});
});
});
});
imap.once('error', function (err)
{
console.log(err);
});
imap.once('end', function ()
{
console.log('Connection ended');
});
imap.connect();

Answer 1

this is simple
first, make a function that makes your connection and Global variable to put your connection on that and handle theme where ever you want
var Connection = [];
function connectImap(username, password, address, port, tls) {
if (typeof Connection[username] != typeof undefined &&
typeof Connection[username].state == typeof '' &&
Connection[username].state == 'authenticated' &&
Connection[username]._config.user == username &&
Connection[username]._config.password == password) {
console.log('IMAP-CLIENT-USE-AUTHENTICATED-CONNECTION ' + username);
} else {
port = port || 993;
tls = tls || true;
Connection[username] = new Imap({
user : username,
password : password,
host : address,
port : port,
authTimeout : 10000,
connTimeout : 10000,
keepalive : true,
tls : tls
});
console.log('IMAP-CLIENT-CONNECTED : ' + username);
}
}
now you have an array of different connection that means you can find the one you wanted.
i hope it helps

Answer 2

You have to create separate connections to monitor multiple accounts.