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Add Velocity IP Forwarding Support

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While Velocity supports BungeeCord-style IP forwarding, it is not secure. Users
have a lot of problems setting up firewalls or setting up plugins like IPWhitelist.
Further, the BungeeCord IP forwarding protocol still retains essentially its original
form, when there is brand new support for custom login plugin messages in 1.13.

Velocity's modern IP forwarding uses an HMAC-SHA256 code to ensure authenticity
of messages, is packed into a binary format that is smaller than BungeeCord's
forwarding, and is integrated into the Minecraft login process by using the 1.13
login plugin message packet.
This commit is contained in:
Andrew Steinborn
2018-10-08 14:36:14 -04:00
parent 63ca8a9302
commit a1051ff388
4 changed files with 184 additions and 28 deletions
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2
paper-server/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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@ -848,7 +848,7 @@ public final class CraftServer implements Server {
@Override
public long getConnectionThrottle() {
// Spigot Start - Automatically set connection throttle for bungee configurations
if (org.spigotmc.SpigotConfig.bungee) {
if (org.spigotmc.SpigotConfig.bungee || io.papermc.paper.configuration.GlobalConfiguration.get().proxies.velocity.enabled) { // Paper - Add Velocity IP Forwarding Support
return -1;
} else {
return this.configuration.getInt("settings.connection-throttle");