Make dual-instance logouts more user-friendly

[smileyhead]

I've encountered this situation while managing my beatmaps on my phone and PC today.

When I open osu! on one device, and then on another, I get logged out of the first device and only stay logged in on the second, and receive the following in-game notification on the first device:

You have been logged out on this device due to a login to your account on another device.

I assume this is some kind of anti-multi-instance protection, since I stay logged in just fine as long as I only have one client open. However, I feel like this is rather unintuitive. When this happens, I am forced to input my password, and check my email for a verification code again.

My suggestion is this: Instead of logging the user out immediately, the game should present a similar dialogue on the first device with some options, before finalising the second client's log-in:

Your account has been logged into on another device. You may only be logged into one running client at a time.

• Log out of this client [Same as the current behaviour]
• Close this client without logging out
• Cancel the other client's log-in

At the same time, a similar dialogue could be displayed on the second device:

Your account is currently logged-in on another device. You may only be logged into one running client at a time.

• Transfer the log-in to this client [Same as the current behaviour]
• Close the other client without logging out
• Cancel

[bdach]

I'm reluctant to implement this because it will make the concurrency enforcement much more complicated and also have complications in the client because protections will have to be added so that you can't play the game on both instances by just dismissing the dialog or whatever.

I'm not sure what is "unintuitive" in the current behaviour.

[peppy]

I don't think it's unintuitive, but it is a major PITA.

If we can somehow add a new APIState which is classified as "failing" or "offline" and implement a flow for this, I'd be all for it.

[smileyhead]

Yeah, sorry, unintuitive is the wrong word. ‘User-unfriendly’ would be a closer descriptor.