How to check if we are still logged in on steam or not

[TheMaster]

hey i am facing asame error to waht the antals bot has sometimes after running for a while the steam trade offer manager shows that error: not logged in now my question is is it the steam login that has been expired > if yes then how to check for it that if we are logged in or not because the auto relogin is already enabled by default so it should not cause any problem right but it appearently is

Edited February 12 by Dr. McKay
Fixed formatting to make text readable

[Dr. McKay]

It depends on how you're logging into Steam.

[TheMaster]

i am loggin on using the logon method by providing my accname pass and the guard code generated by steam totp and then sending the client to steam tradeoffermanager

[Dr. McKay]

So you're using steam-user? You can check if the steamID property is set to a non-null value, which will indicate that you're still logged in.

But from the sound of things, you're running into expired cookies. Your web session cookies expire from time to time and need to be refreshed using steam-user's webLogOn() method.

[TheMaster]

where should i place this check?

according to one example i saw from some one waht he did he tried to send a offer when the steam tradeoffer manager returned the error not logged in what he did was 
called this method is this the correct way?
 

    steamReLogin(steam) {

        // If we don't have a steam id at all, we need to re-login, otherwise we can just re-weblogin

        if (!this.clients[steam.accountName].steamID) {

            this.steamLogin(steam);

        }

        else {

            this.clients[steam.accountName].webLogOn();

        }

    }

[Dr. McKay]

Yeah, that looks fine. But ordinarily it shouldn't ever be possible for your SteamUser client to disconnect without you being aware of it, since the error event will be emitted.