CefSettings.root_cache_path (5.9)

[KVonGit]

https://discord.com/channels/1278365322054996018/1310990109797253141

Attempting to play more than one game using multiple instances of the 5.9 desktop build throws an error.

log message:

[1126/130544.767:WARNING:resource_util.cc(83)] Please customize CefSettings.root_cache_path for your application. Use of the default value may lead to unintended process singleton behavior.

[KVonGit]

https://github.com/cefsharp/CefSharp/blob/9647d96423e0278bbf8f4b3ad805ef0f58b4b032/CefSharp.Example/CefExample.cs#L75-L81

            //The location where cache data will be stored on disk. If empty an in-memory cache will be used for some features and a temporary disk cache for others.
            //HTML5 databases such as localStorage will only persist across sessions if a cache path is specified. 
            settings.RootCachePath = Path.GetFullPath("cache");
            //If non-null then CachePath must be equal to or a child of RootCachePath
            //We're using a sub folder.
            //
            settings.CachePath = Path.GetFullPath("cache\\global");

[KVonGit]

I don't know enough about this to even attempt theorizing a possible fix.

Even if I knew where to set the proper value, I wouldn't know what the proper value was.

I don't see it being set in any editable file in the build directory:

kv@DESKTOP-FOOBAR2:/mnt/c/Users/kv/Documents/GitHub/quest/Quest/bin/x86/Debug$ grep -InHr "RootCachePath" *
CefSharp.Core.Runtime.xml:587:of RootCachePath. If this value is empty then browsers will be created in "incognito mode"
CefSharp.Core.Runtime.xml:589:(installation-specific data will still be persisted in RootCachePath). HTML5 databases
CefSharp.Core.Runtime.xml:672:an absolute path that is must be either equal to or a child directory of CefSettings.RootCachePath (if RootCachePath is
CefSharp.Core.Runtime.xml:2039:child directory of CefSettings.RootCachePath.If this value is empty then browsers will be
CefSharp.Core.Runtime.xml:2041:specific data is persisted to disk(installation - specific data will still be persisted in RootCachePath).
CefSharp.Core.Runtime.xml:13525:        <!-- Discarding badly formed XML document comment for member 'P:CefSharp.Core.CefSettingsBase.RootCachePath'. -->
CefSharp.Core.xml:699:            of <see cref="P:CefSharp.CefSettingsBase.RootCachePath"/>. If this value is empty then browsers will be created in "incognito mode"
CefSharp.Core.xml:701:            (installation-specific data will still be persisted in <see cref="P:CefSharp.CefSettingsBase.RootCachePath"/>). HTML5 databases
CefSharp.Core.xml:708:        <!-- Badly formed XML comment ignored for member "P:CefSharp.CefSettingsBase.RootCachePat
" -->
CefSharp.Core.xml:35254:            either equal to or a child directory of CefSettings.RootCachePath.
CefSharp.Core.xml:35337:            child directory of <see cref="P:CefSharp.CefSettingsBase.RootCachePath"/>.
CefSharp.Core.xml:35340:            (installation - specific data will still be persisted in <see cref="P:CefSharp.CefSettingsBase.RootCachePath"/>).
CefSharp.xml:5659:             running app is relaunched with the same CefSettings.RootCachePath value.
CefSharp.xml:5663:             a given CefSettings.RootCachePath value. On relaunch the app checks a
CefSharp.xml:7320:             running app is relaunched with the same CefSettings.RootCachePath value.
CefSharp.xml:7324:             a given CefSettings.RootCachePath value. On relaunch the app checks a
kv@DESKTOP-FOOBAR2:/mnt/c/Users/kv/Documents/GitHub/quest/Quest/bin/x86/Debug$

[TextMisadventures]

I don't have a clue how to handle this. I tried again for a good while just now. I found quite a few places where people advised going by this: https://github.com/cefsharp/CefSharp/blob/v130.1.90/CefSharp.Example/CefExample.cs

Looking at that makes me even more confused. This is over my head. I don't even know what to begin to do with that example.

[KVonGit]

The root cache path has to be set somewhere already, because localStorage is persistent already, and the CEF docs say localStorage will not be persistent without this set.

...but I added code to set it anyway, and I still get the same error after modifying this part of PlayerHTML.vb (and the settings definitely take effect, but I'm 99% sure the only change is that it puts the files in the folder I specify rather than a Windows user app directory or something):

        settings.RegisterScheme(resScheme)
        settings.RootCachePath = My.Application.Info.DirectoryPath() & "\cache\global"

        Cef.Initialize(settings)

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I open one instance of Quest and load a game in the player. Then, while that game is running in the player, I open a second instance of Quest and load a second game in that player.

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These lines appear in the log when starting the second game in the player:

[11212:4900:1209/200152.736:WARNING:chrome_main_delegate.cc(747)] This is Chrome version 130.0.6723.70 (not a warning)
[7788:8116:1209/200155.811:WARNING:chrome_browser_delegate.cc(693)] Creating a chrome browser without a client

At this point, an actual Chrome window is opened.

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I believe it finds that its browser is already busy (or that it failed to initialize), and it tries to run the second game in Chrome. (Just a wild theory.)

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cefsharp/CefSharp#4668 (comment)

This seems to be saying this should have never worked, and that a previous update to CEF "fixes" everything by stopping it from trying to work at all.

[KVonGit]

Well, this is most probably bad practice, but this allows two games at once:

        settings.RootCachePath = Path.GetTempPath() & "\quest5-cache" + (Convert.ToInt32((DateTime.Now - (New DateTime(2012, 1, 1))).TotalSeconds)).ToString()

---

During play, each game has its own localStorage (of course), but that localStorage is rendered inaccessible once the game is closed this way. I also assume this will fill the temp directory up before too long, haha.

I wonder if the game directory can be accessed at this point in this script... Then, each game could have its own persistent localStorage.

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Since I have commented so many times here, I am converting this to a Discussion, and an issue without all these comments will be created in this issue's place.