Dr. McKay

shoppingCartGID doesn't get issued until you actually add something to your cart.

You misspelled accountName

Native support for what, filtering by item name? No.

No, there isn't any native support in the library for that. It would probably be easier for you to just manually send the request and parse the JSON yourself.

You can use the count URL parameter to filter how many items are returned, like this: https://steamcommunity.com/inventory/76561198006409530/753/6?count=1

The market listing ID is the creator property.

Your assumption is correct.
You could either use IPC to call to the master process and do your steamcommunity work there, or use IPC in the master process to the worker processes to share your login cookies.

Good news, well I mean the error still occurs but I know what's going on. And knowing is good .

As you can see, while the error did look scary being displayed 5-10 times, all accounts do get successful requests from time to time. In fact, more often than not. So the fear factor was just a result of the scale I'm working in. I am not sure why this is the error I get instead of 502, but whatever, it's not catastrophic. Problem solved.

The only thing that happens when a session expires is the sessionExpired event gets emitted (potentially multiple times). There isn't any other way to tell.

Created an issue for this: Steam awards · Issue #271 · DoctorMcKay/node-steamcommunity (github.com)

Thanks, seems like its fixed my problem!

My mistake, I didn't pay close enough attention to your callback. The first argument to the callback function needs to be err; the second is user.

Get rid of the object. You should just be doing this: account1.getSteamUser(account1.steamID, function (user) {

You want your ID or your custom url? Those are two different things.
Your SteamID is available as account.steamID. To get your custom URL, you should call getSteamUser() on your own steamID and check the custom URL in the returned object.

Perfect, thank you very much!

Yes.
Yes.
That's correct. client.steamID gets set just before loggedOn is emitted (meaning it's not null once you connect), and gets set to null just after disconnected / error are emitted.

Sounds like you need to pass a callback and check if Steam is returning an error.

It should be a string.

No, that's not possible and I don't have any plans to enable automated voting.

If you haven't disabled automatic reconnection, then you shouldn't ever need to call logOn after the first time (unless the error event gets emitted). So yeah, when you get sessionExpired just check to make sure SteamUser is connected, then call webLogOn() if it is. If it isn't, then it'll automatically log onto web when it gets connected.

That error happens when you call logOn while the SteamUser instance is already connected.

There's no technical limit; your only limitations should be IP addresses and system resources.

Before you call webLogOn, check to see if the client.steamID property is null. If it is, then you're not connected to Steam, and that's likely the reason why your web session expired.

Correct, when a new client session is established, a web session is automatically negotiated.

There is no timeout for connection attempts because when Steam goes down, it can stay down for a while and we want to be able to reconnect automatically.
Add this and you can get some more descriptive output:
client.on('debug', (msg) => console.log(msg));