Freecam blacklist does not disable Freecam in multiplayer servers

[CelexFr]

Description of the issue

I’m having trouble disabling Freecam in multiplayer. There doesn’t seem to be any documentation or tutorial explaining how to properly restrict Freecam usage on specific servers.

I tried using the blacklist/whitelist restriction feature, but it does not appear to work as expected.

Steps That I Took

(1). Set Restriction To Blacklist
(2). Entered the server (Which was mcpvp.club)
(3). Saved and quit

But still it said "Please remove Freecam Before Joining this server".

Images ✌️

Based on my understanding, setting the restriction mode to BlackList and adding a server address should prevent Freecam from working on that specific server. If this understanding is incorrect, clarification or documentation would be greatly appreciated.

Any help or guidance on how to disable Freecam correctly in multiplayer would be greatly appreciated. Thank you!!!

Expected behavior

I Expected That :

**Freecam should be disabled when connected to a server that is listed in the blacklist. **

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What Actually Happened :

Freecam still works normally on the blacklisted multiplayer server.

Steps to reproduce

**

1. Go to Freecam Config Menu

2. Select Blacklist in the Multiplayer restrictions Section And Type mcpvp.club

3. Go into the server, and the same error will occur
   **

### How prevalent is the issue?

Players Who Use Freecam While playing on **`mcpvp.club`**

### Freecam version

Version 1.3.6 + mc1.21.11

### Minecraft version

1.21.11

### Modding platform

- [x] Fabric
- [ ] Neoforge
- [ ] Forge

[MattSturgeon]

Based on my understanding, setting the restriction mode to BlackList and adding a server address should prevent Freecam from working on that specific server.

That's correct. However, regardless of how you configure Freecam's settings, Freecam never "tells" the server anything. Servers do not know that you've configured a blacklist.

This specific server is likely using an exploit to detect that Freecam is installed. Probably MC-265322, similar to #196 (comment). Freecam cannot (and shouldn't) hide from such exploits.

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You can verify that the whitelist/blacklist feature is working by using a different server; one that you can login to.

The expected behaviour is:

1. Freecam remains installed.
2. Freecam remains detectable by servers resorting to exploits.
3. The client can login to most servers as normal.
4. Once logged in, you can only use Freecam features if the current server is configured as "allowed"
   (or not configured as "blocked").