From 79d8d291a2de33227564e3d2045e1d5b9e522a29 Mon Sep 17 00:00:00 2001
From: Hendrik Brombeer <hendrikbrombeer@gmail.com>
Date: Wed, 6 May 2026 23:21:30 +0200
Subject: [PATCH] fix(paper,paper-gamemode): authenticate against Mojang
 directly
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Both images shipped with online-mode=false + Velocity-modern-
forwarding enabled — a config that only makes sense behind a
Velocity proxy that does the auth and signs the player profile.
There's no Velocity in the architecture: mc-router handles fan-out
via raw TCP/SNI relay, no protocol-level auth. So Paper saw the
client directly, computed an offline-mode UUID via
nameUUIDFromBytes("OfflinePlayer:<name>"), and that didn't match
the Mojang-resolved UUID we whitelisted. Players got "You are not
whitelisted on this server!" even though they were in the list.

Flip both images to authenticate directly:
  - server.properties online-mode=true
  - paper-global.yml proxies.velocity.enabled=false

If we later add Velocity for hub/queue/cross-server features,
revisit — modern forwarding wants this exact reverse pair.
---
 paper-gamemode/config/paper-global.yml  | 2 +-
 paper-gamemode/config/server.properties | 2 +-
 paper/config/paper-global.yml           | 2 +-
 paper/config/server.properties          | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/paper-gamemode/config/paper-global.yml b/paper-gamemode/config/paper-global.yml
index bbc862f..e15ea50 100644
--- a/paper-gamemode/config/paper-global.yml
+++ b/paper-gamemode/config/paper-global.yml
@@ -113,7 +113,7 @@ proxies:
     online-mode: true
   proxy-protocol: false
   velocity:
-    enabled: true # grounds: change to true
+    enabled: false
     online-mode: true
     secret: ''
 scoreboards:
diff --git a/paper-gamemode/config/server.properties b/paper-gamemode/config/server.properties
index 4386d1b..3d6c901 100644
--- a/paper-gamemode/config/server.properties
+++ b/paper-gamemode/config/server.properties
@@ -41,7 +41,7 @@ max-tick-time=60000
 max-world-size=29999984
 motd=A Minecraft Server
 network-compression-threshold=256
-online-mode=false # grounds: change to false
+online-mode=true
 op-permission-level=4
 pause-when-empty-seconds=-1
 player-idle-timeout=0
diff --git a/paper/config/paper-global.yml b/paper/config/paper-global.yml
index bbc862f..e15ea50 100644
--- a/paper/config/paper-global.yml
+++ b/paper/config/paper-global.yml
@@ -113,7 +113,7 @@ proxies:
     online-mode: true
   proxy-protocol: false
   velocity:
-    enabled: true # grounds: change to true
+    enabled: false
     online-mode: true
     secret: ''
 scoreboards:
diff --git a/paper/config/server.properties b/paper/config/server.properties
index 4386d1b..3d6c901 100644
--- a/paper/config/server.properties
+++ b/paper/config/server.properties
@@ -41,7 +41,7 @@ max-tick-time=60000
 max-world-size=29999984
 motd=A Minecraft Server
 network-compression-threshold=256
-online-mode=false # grounds: change to false
+online-mode=true
 op-permission-level=4
 pause-when-empty-seconds=-1
 player-idle-timeout=0