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Velocity: Fix disabling compression when there is no compression to disable

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Camotoy 2023-01-02 12:12:22 -05:00
parent c48cb2a4a8
commit 402b3403ba
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GPG key ID: 7EEFB66FE798081F
1 changed files with 20 additions and 5 deletions
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25
bootstrap/velocity/src/main/java/org/geysermc/geyser/platform/velocity/GeyserVelocityCompressionDisabler.java
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@ -25,28 +25,32 @@
package org.geysermc.geyser.platform.velocity; package org.geysermc.geyser.platform.velocity;
import io.netty.channel.ChannelDuplexHandler;
import io.netty.channel.ChannelHandlerContext; import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelOutboundHandlerAdapter;
import io.netty.channel.ChannelPromise; import io.netty.channel.ChannelPromise;
import org.geysermc.geyser.GeyserImpl; import org.geysermc.geyser.GeyserImpl;
import java.lang.reflect.Method; import java.lang.reflect.Method;
public class GeyserVelocityCompressionDisabler extends ChannelOutboundHandlerAdapter { public class GeyserVelocityCompressionDisabler extends ChannelDuplexHandler {
static final boolean ENABLED; static final boolean ENABLED;
private static final Class<?> COMPRESSION_PACKET_CLASS; private static final Class<?> COMPRESSION_PACKET_CLASS;
private static final Class<?> LOGIN_SUCCESS_PACKET_CLASS; private static final Class<?> LOGIN_SUCCESS_PACKET_CLASS;
private static final Object COMPRESSION_ENABLED_EVENT;
private static final Method SET_COMPRESSION_METHOD; private static final Method SET_COMPRESSION_METHOD;
static { static {
boolean enabled = false; boolean enabled = false;
Class<?> compressionPacketClass = null; Class<?> compressionPacketClass = null;
Class<?> loginSuccessPacketClass = null; Class<?> loginSuccessPacketClass = null;
Object compressionEnabledEvent = null;
Method setCompressionMethod = null; Method setCompressionMethod = null;
try { try {
compressionPacketClass = Class.forName("com.velocitypowered.proxy.protocol.packet.SetCompression"); compressionPacketClass = Class.forName("com.velocitypowered.proxy.protocol.packet.SetCompression");
loginSuccessPacketClass = Class.forName("com.velocitypowered.proxy.protocol.packet.ServerLoginSuccess"); loginSuccessPacketClass = Class.forName("com.velocitypowered.proxy.protocol.packet.ServerLoginSuccess");
compressionEnabledEvent = Class.forName("com.velocitypowered.proxy.protocol.VelocityConnectionEvent")
.getDeclaredField("COMPRESSION_ENABLED").get(null);
setCompressionMethod = Class.forName("com.velocitypowered.proxy.connection.MinecraftConnection") setCompressionMethod = Class.forName("com.velocitypowered.proxy.connection.MinecraftConnection")
.getMethod("setCompressionThreshold", int.class); .getMethod("setCompressionThreshold", int.class);
enabled = true; enabled = true;
@ -57,6 +61,7 @@ public class GeyserVelocityCompressionDisabler extends ChannelOutboundHandlerAda
ENABLED = enabled; ENABLED = enabled;
COMPRESSION_PACKET_CLASS = compressionPacketClass; COMPRESSION_PACKET_CLASS = compressionPacketClass;
LOGIN_SUCCESS_PACKET_CLASS = loginSuccessPacketClass; LOGIN_SUCCESS_PACKET_CLASS = loginSuccessPacketClass;
COMPRESSION_ENABLED_EVENT = compressionEnabledEvent;
SET_COMPRESSION_METHOD = setCompressionMethod; SET_COMPRESSION_METHOD = setCompressionMethod;
} }
@ -72,13 +77,23 @@ public class GeyserVelocityCompressionDisabler extends ChannelOutboundHandlerAda
if (!COMPRESSION_PACKET_CLASS.isAssignableFrom(msgClass)) { if (!COMPRESSION_PACKET_CLASS.isAssignableFrom(msgClass)) {
if (LOGIN_SUCCESS_PACKET_CLASS.isAssignableFrom(msgClass)) { if (LOGIN_SUCCESS_PACKET_CLASS.isAssignableFrom(msgClass)) {
// We're past the point that compression can be enabled // We're past the point that compression can be enabled
// Invoke the method as it calls a Netty event and handles removing cleaner than we could
Object minecraftConnection = ctx.pipeline().get("handler");
SET_COMPRESSION_METHOD.invoke(minecraftConnection, -1);
ctx.pipeline().remove(this); ctx.pipeline().remove(this);
} }
super.write(ctx, msg, promise); super.write(ctx, msg, promise);
} }
} }
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
if (evt != COMPRESSION_ENABLED_EVENT) {
super.userEventTriggered(ctx, evt);
return;
}
// Invoke the method as it calls a Netty event and handles removing cleaner than we could
Object minecraftConnection = ctx.pipeline().get("handler");
SET_COMPRESSION_METHOD.invoke(minecraftConnection, -1);
// Do not call super and let the new compression enabled event continue firing
}
} }