Mirror von
https://github.com/PaperMC/Paper.git
synchronisiert 2024-12-15 11:00:06 +01:00
Remove locking in favour of a volatile state variable.
Dieser Commit ist enthalten in:
Ursprung
58689d2251
Commit
3bbde30ab0
@ -1,4 +1,4 @@
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From 840a6fa0c4febdcdb5b9e0a7af30a7d04d7e3172 Mon Sep 17 00:00:00 2001
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From d5543f1ee66f0f7e7ad7dad7220887d6014feb5f 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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@ -17,14 +17,14 @@ This commit is licensed under the Creative Commons Attribution-ShareAlike 3.0 Un
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.../net/minecraft/server/PendingConnection.java | 15 +-
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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 | 221 ++++++++++++++++++
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.../org/spigotmc/netty/NettyNetworkManager.java | 206 +++++++++++++++++
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.../org/spigotmc/netty/NettyServerConnection.java | 105 +++++++++
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.../org/spigotmc/netty/NettySocketAdaptor.java | 248 +++++++++++++++++++++
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.../java/org/spigotmc/netty/PacketDecoder.java | 63 ++++++
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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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src/main/java/org/spigotmc/netty/ReadState.java | 16 ++
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12 files changed, 883 insertions(+), 7 deletions(-)
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12 files changed, 868 insertions(+), 7 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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@ -210,10 +210,10 @@ 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..81164a4
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index 0000000..90c63e1
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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 +1,221 @@
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@@ -0,0 +1,206 @@
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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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@ -249,8 +249,8 @@ index 0000000..81164a4
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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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+ private final Object mutex = new Object();
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+ private final Queue<Packet> syncPackets = new ConcurrentLinkedQueue<Packet>();
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+ private volatile boolean connected;
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+ private Channel channel;
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+ private SocketAddress address;
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+ private Connection handler;
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@ -261,41 +261,31 @@ index 0000000..81164a4
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+
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+ @Override
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+ public void channelActive(ChannelHandlerContext ctx) throws Exception {
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+ synchronized (mutex) {
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+ // Channel and address groundwork first
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+ channel = ctx.channel();
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+ address = channel.remoteAddress();
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+ // Then the socket adaptor
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+ socketAdaptor = NettySocketAdaptor.adapt((SocketChannel) channel);
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+ // Followed by their first handler
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+ handler = new PendingConnection(server, this);
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+ // Finally register the connection
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+ serverConnection.pendingConnections.add((PendingConnection) handler);
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+ }
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+ // Channel and address groundwork first
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+ channel = ctx.channel();
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+ address = channel.remoteAddress();
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+ // Then the socket adaptor
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+ socketAdaptor = NettySocketAdaptor.adapt((SocketChannel) channel);
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+ // Followed by their first handler
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+ handler = new PendingConnection(server, this);
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+ // Finally register the connection
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+ connected = true;
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+ serverConnection.pendingConnections.add((PendingConnection) handler);
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+ }
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+
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+ @Override
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+ public void channelInactive(ChannelHandlerContext ctx) throws Exception {
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+ synchronized (mutex) {
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+ if (dcReason == null || dcArgs == null) {
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+ a("disconnect.endOfStream", new Object[0]);
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+ }
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+ // Remove channel reference to indicate we are done
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+ channel = null;
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+ }
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+ a("disconnect.endOfStream", new Object[0]);
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+ }
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+
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+ @Override
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+ public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
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+ synchronized (mutex) {
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+ // TODO: Remove this once we are more stable
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+ // Bukkit.getServer().getLogger().severe("======================= Start Netty Debug Log =======================");
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+ // Bukkit.getServer().getLogger().log(Level.SEVERE, "Error caught whilst handling " + channel, cause);
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+ // Bukkit.getServer().getLogger().severe("======================= End Netty Debug Log =======================");
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+
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+ // Disconnect with generic reason + exception
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+ a("disconnect.genericReason", new Object[]{"Internal exception: " + cause});
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+ }
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+ // TODO: Remove this once we are more stable
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+ // Bukkit.getServer().getLogger().severe("======================= Start Netty Debug Log =======================");
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+ // Bukkit.getServer().getLogger().log(Level.SEVERE, "Error caught whilst handling " + channel, cause);
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+ // Bukkit.getServer().getLogger().severe("======================= End Netty Debug Log =======================");
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+ // Disconnect with generic reason + exception
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+ a("disconnect.genericReason", new Object[]{"Internal exception: " + cause});
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+ }
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+
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+ @Override
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@ -338,22 +328,20 @@ index 0000000..81164a4
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+ * @param packet the packet to queue
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+ */
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+ public void queue(Packet packet) {
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+ synchronized (mutex) {
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+ // Only send if channel is still connected
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+ if (channel != null) {
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+ // Process packet via handler
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+ packet = PacketListener.callQueued(this, handler, packet);
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+ // If handler indicates packet send
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+ if (packet != null) {
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+ channel.write(packet);
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+ // Only send if channel is still connected
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+ if (connected) {
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+ // Process packet via handler
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+ packet = PacketListener.callQueued(this, handler, packet);
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+ // If handler indicates packet send
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+ if (packet != null) {
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+ channel.write(packet);
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+
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+ // If needed, check and prepare encryption phase
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+ if (packet instanceof Packet252KeyResponse) {
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+ BufferedBlockCipher encrypt = NettyServerConnection.getCipher(true, secret);
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+ BufferedBlockCipher decrypt = NettyServerConnection.getCipher(false, secret);
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+ CipherCodec codec = new CipherCodec(encrypt, decrypt);
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+ channel.pipeline().addBefore("decoder", "cipher", codec);
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+ }
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+ // If needed, check and prepare encryption phase
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+ if (packet instanceof Packet252KeyResponse) {
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+ BufferedBlockCipher encrypt = NettyServerConnection.getCipher(true, secret);
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+ BufferedBlockCipher decrypt = NettyServerConnection.getCipher(false, secret);
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+ CipherCodec codec = new CipherCodec(encrypt, decrypt);
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+ channel.pipeline().addBefore("decoder", "cipher", codec);
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+ }
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+ }
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+ }
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@ -381,7 +369,7 @@ index 0000000..81164a4
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+ }
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+
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+ // Disconnect via the handler - this performs all plugin related cleanup + logging
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+ if ((dcReason != null || dcArgs != null) && syncPackets.isEmpty()) {
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+ if (!connected) {
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+ handler.a(dcReason, dcArgs);
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+ }
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+ }
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@ -400,10 +388,9 @@ index 0000000..81164a4
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+ * close. Close and release all resources associated with this connection.
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+ */
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+ public void d() {
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+ synchronized (mutex) {
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+ if (channel != null) {
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+ channel.close();
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+ }
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+ if (connected) {
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+ connected = false;
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+ channel.close();
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+ }
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+ }
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+
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@ -426,12 +413,10 @@ index 0000000..81164a4
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+ * exception which triggered the disconnect.
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+ */
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+ public void a(String reason, Object... arguments) {
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+ synchronized (mutex) {
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+ if (channel != null) {
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+ dcReason = reason;
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+ dcArgs = arguments;
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+ channel.close();
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+ }
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+ if (connected) {
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+ dcReason = reason;
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+ dcArgs = arguments;
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+ d();
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+ }
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+ }
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+}
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