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Fix `Internal Exception: java.lang.IllegalStateException: Invalid characters in username` on offline servers with Spigot 1.19.
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| index 2db69f9d..2d0dd14c 100644 | |
| --- a/CraftBukkit-Patches/0030-Fire-PreLogin-Events-in-Offline-Mode.patch | |
| +++ b/CraftBukkit-Patches/0030-Fire-PreLogin-Events-in-Offline-Mode.patch | |
| @@ -55,6 +55,19 @@ index dbf5769bc..a780e30d3 100644 | |
| } | |
| } | |
| +@@ -235,9 +262,9 @@ public class LoginListener implements PacketLoginInListener { | |
| + } | |
| + | |
| + public static boolean isValidUsername(String s) { | |
| +- return s.chars().filter((i) -> { | |
| +- return i <= 32 || i >= 127; | |
| +- }).findAny().isEmpty(); | |
| ++ // Joshua start | |
| ++ return true; | |
| ++ // Joshua end | |
| + } | |
| + | |
| + @Override | |
| @@ -280,40 +307,7 @@ public class LoginListener implements PacketLoginInListener { | |
| return; | |
| } |
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To apply this, run spigot's
BuildTools.jarto get Spigot 1.19,cd Spigot,git apply disable-username-validation-craftbukkit-spigot.patch, andjava -jar BuildTools.jar --dont-update. The resultingspigot-1.19.jarwill then skip username validation, allowing for punctuation, unicode, spaces, etc in Minecraft servers in offline mode.