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Function Returns Undefined


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I am using express.js and try to log all my bots in according to requests made from my python server. I can successfully make my bots logged into steam but can't get returned message (it just returns undefined) to send back to server. 

My code looks like this:

const accounts = []

function addAccount(username, password, twoFactorCode){

    const client = new SteamUser();
    const community = new SteamCommunity();
    const manager = new TradeOfferManager({
        steam: client,
        community: community,
        language: 'en',
        cancelTime: 300000,
        pendingCancelTime: 30000

    const logOnOptions = {
        accountName: username,
        password: password,
        twoFactorCode: SteamTotp.generateAuthCode(twoFactorCode),
    client.on('loggedOn', ()=> {

    client.on('webSession', (sessionid, cookies) => {
        console.log(sessionid, cookies);
        manager.setCookies(cookies, function(err){
            if (err) {
                return err
                console.log("Got API key: " + manager.apiKey);
                return "success";
    community.on('sessionExpired', () => {

    accounts.push({"client":client, "community":community, "manager": manager})

app.post('/log', (req, res) => {
    if (accounts.length === 0){
        var json_data = req.body
        json_data.forEach(element => {
            var answer = addAccount(element["user_name"], element["password"], element["secret"])
    res.json({ "answer": answer })


Edited by Snow
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On 8/26/2021 at 8:52 PM, Dr. McKay said:

accounts is always going to be empty when your /log listener executes, so no accounts will get added and nothing will be returned.

I am still using express js and can get accounts array without a problem. What would you suggest instead of adding them to array ?


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