How to prevent different Application Versions to join a lobby?

Unity Services
,
1

Hello. How can I prevent a player to join a lobby if their Application.version is different than from the Host? Is there a callback for that? I couldn’t find anything in the documentation.

2

Okay I found a solution for this by using CreateLobbyOptions.

When the host is creating a lobby, it is using this option:

var options = new CreateLobbyOptions
{
    Data = new Dictionary<string, DataObject>
    {
        ... your options ...
        {
            "version", new DataObject(DataObject.VisibilityOptions.Public, Application.version)
        },
        ... your options ...
    }
};


currentLobby = await Lobbies.Instance.CreateLobbyAsync(data.name, data.maxPlayers, options);

When a client is joinging a lobby, I added this check:

var lobbyToJoin = await Lobbies.Instance.GetLobbyAsync(lobbyId);
if (!string.Equals(lobbyToJoin.Data["version"].Value, Application.version))
{
    throw new Exception("Lobby version mismatch");
}
3

But I have another question now. How can I do this for joining with lobby code? GetLobbyAsync seems to work only for the lobby id. And it seems like there isnt a function to retrieve the lobby with the lobby code. Only join with code.

4

I think that the only way is to quickly leave the lobby if there is a version mismatch

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