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Fix legacy pinging with some uber ninja coding.
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md_5
parent
4542cc4a23
commit
7a9eda4b61
@ -1,4 +1,4 @@
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From 38d50a9b4c47c13727aaecf2da4f58fe2020532d Mon Sep 17 00:00:00 2001
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From 61c1e45f834dc0ecbd2859a2ee98150e860187c7 Mon Sep 17 00:00:00 2001
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From: md_5 <md_5@live.com.au>
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Date: Sun, 3 Feb 2013 10:24:33 +1100
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Subject: [PATCH] Netty
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@ -17,13 +17,13 @@ This commit is licensed under the Creative Commons Attribution-ShareAlike 3.0 Un
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.../net/minecraft/server/PendingConnection.java | 13 +-
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.../net/minecraft/server/PlayerConnection.java | 2 +-
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src/main/java/org/spigotmc/netty/CipherCodec.java | 65 ++++++
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.../org/spigotmc/netty/NettyNetworkManager.java | 211 ++++++++++++++++++
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.../org/spigotmc/netty/NettyServerConnection.java | 104 +++++++++
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.../org/spigotmc/netty/NettyNetworkManager.java | 224 +++++++++++++++++++
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.../org/spigotmc/netty/NettyServerConnection.java | 106 +++++++++
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.../org/spigotmc/netty/NettySocketAdaptor.java | 248 +++++++++++++++++++++
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.../java/org/spigotmc/netty/PacketDecoder.java | 57 +++++
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.../java/org/spigotmc/netty/PacketDecoder.java | 62 ++++++
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.../java/org/spigotmc/netty/PacketEncoder.java | 43 ++++
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.../java/org/spigotmc/netty/PacketListener.java | 100 +++++++++
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11 files changed, 849 insertions(+), 6 deletions(-)
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11 files changed, 869 insertions(+), 6 deletions(-)
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create mode 100644 src/main/java/org/spigotmc/netty/CipherCodec.java
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create mode 100644 src/main/java/org/spigotmc/netty/NettyNetworkManager.java
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create mode 100644 src/main/java/org/spigotmc/netty/NettyServerConnection.java
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@ -199,10 +199,10 @@ index 0000000..cfc0535
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+}
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diff --git a/src/main/java/org/spigotmc/netty/NettyNetworkManager.java b/src/main/java/org/spigotmc/netty/NettyNetworkManager.java
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new file mode 100644
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index 0000000..effd1ee
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index 0000000..998659d
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/netty/NettyNetworkManager.java
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@@ -0,0 +1,211 @@
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@@ -0,0 +1,224 @@
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+package org.spigotmc.netty;
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+
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+import io.netty.channel.Channel;
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@ -222,6 +222,7 @@ index 0000000..effd1ee
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+import net.minecraft.server.MinecraftServer;
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+import net.minecraft.server.Packet;
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+import net.minecraft.server.Packet252KeyResponse;
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+import net.minecraft.server.Packet254GetInfo;
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+import net.minecraft.server.PendingConnection;
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+import net.minecraft.server.PlayerConnection;
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+import org.bouncycastle.crypto.BufferedBlockCipher;
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@ -238,6 +239,10 @@ index 0000000..effd1ee
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+ private static final PrivateKey key = server.F().getPrivate();
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+ private static final NettyServerConnection serverConnection = (NettyServerConnection) server.ae();
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+ /*========================================================================*/
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+ static final int LEGACY_PING_TIME = 1500;
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+ Packet254GetInfo pingRequest;
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+ long lastPingRead;
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+ /*========================================================================*/
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+ private Queue<Packet> syncPackets = new ConcurrentLinkedQueue<Packet>();
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+ private volatile Channel channel;
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+ private SocketAddress address;
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@ -354,6 +359,14 @@ index 0000000..effd1ee
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+ * them. This method should only be called from the main server thread.
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+ */
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+ public void b() {
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+ // Horrible hack for legacy clients / server lists
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+ if (pingRequest != null) {
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+ if (System.currentTimeMillis() - lastPingRead > LEGACY_PING_TIME) {
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+ syncPackets.add(pingRequest);
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+ pingRequest = null;
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+ }
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+ }
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+
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+ for (int i = 1000; !syncPackets.isEmpty() && i >= 0; i--) {
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+ if (handler instanceof PendingConnection ? ((PendingConnection) handler).c : ((PlayerConnection) handler).disconnected) {
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+ syncPackets.clear();
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@ -416,10 +429,10 @@ index 0000000..effd1ee
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+}
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diff --git a/src/main/java/org/spigotmc/netty/NettyServerConnection.java b/src/main/java/org/spigotmc/netty/NettyServerConnection.java
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new file mode 100644
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index 0000000..781c2cc
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index 0000000..f80637a
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/netty/NettyServerConnection.java
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@@ -0,0 +1,104 @@
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@@ -0,0 +1,106 @@
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+package org.spigotmc.netty;
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+
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+import io.netty.bootstrap.ServerBootstrap;
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@ -468,11 +481,13 @@ index 0000000..781c2cc
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+ } catch (ChannelException ex) {
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+ // IP_TOS is not supported (Windows XP / Windows Server 2003)
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+ }
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+ NettyNetworkManager networkManager = new NettyNetworkManager();
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+
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+ ch.pipeline()
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+ .addLast("timer", new ReadTimeoutHandler(30))
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+ .addLast("decoder", new PacketDecoder())
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+ .addLast("decoder", new PacketDecoder(networkManager))
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+ .addLast("encoder", new PacketEncoder())
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+ .addLast("manager", new NettyNetworkManager());
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+ .addLast("manager", networkManager);
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+ }
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+ }).group(new NioEventLoopGroup()).localAddress(host, port).bind();
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+ }
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@ -780,10 +795,10 @@ index 0000000..a3b86b8
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+}
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diff --git a/src/main/java/org/spigotmc/netty/PacketDecoder.java b/src/main/java/org/spigotmc/netty/PacketDecoder.java
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new file mode 100644
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index 0000000..dc0222e
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index 0000000..4c72256
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/netty/PacketDecoder.java
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@@ -0,0 +1,57 @@
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@@ -0,0 +1,62 @@
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+package org.spigotmc.netty;
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+
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+import io.netty.buffer.ByteBuf;
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@ -803,8 +818,12 @@ index 0000000..dc0222e
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+ */
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+public class PacketDecoder extends ReplayingDecoder<Packet> {
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+
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+ private final NettyNetworkManager networkManager;
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+ private DataInputStream input;
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+ private long lastPingRead;
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+
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+ public PacketDecoder(NettyNetworkManager networkManager) {
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+ this.networkManager = networkManager;
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+ }
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+
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+ @Override
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+ public Packet decode(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
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@ -825,8 +844,10 @@ index 0000000..dc0222e
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+ }
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+
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+ if (packetId == 0xFE && ((Packet254GetInfo) packet).a == 0) {
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+ networkManager.pingRequest = (Packet254GetInfo) packet;
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+ long currentTime = System.currentTimeMillis();
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+ if ((lastPingRead == 0 && (lastPingRead = currentTime) == currentTime) || currentTime - lastPingRead < 1500) {
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+ if ((networkManager.lastPingRead == 0 && (networkManager.lastPingRead = currentTime) == currentTime)
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+ || currentTime - networkManager.lastPingRead < NettyNetworkManager.LEGACY_PING_TIME) {
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+ return null;
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+ }
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+ }
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@ -838,7 +859,6 @@ index 0000000..dc0222e
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+ public void freeInboundBuffer(ChannelHandlerContext ctx) throws Exception {
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+ super.freeInboundBuffer(ctx);
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+ input = null;
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+ lastPingRead = 0;
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+ }
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+}
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diff --git a/src/main/java/org/spigotmc/netty/PacketEncoder.java b/src/main/java/org/spigotmc/netty/PacketEncoder.java
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