Cleanup channel initialization - now its time to get this show working.

protocol/pom.xml

@@ -23,6 +23,7 @@
             <groupId>io.netty</groupId>
             <artifactId>netty-buffer</artifactId>
             <version>4.0.0.Beta2</version>
+            <scope>provided</scope>
         </dependency>
     </dependencies>
 </project>

proxy/src/main/java/net/md_5/bungee/BungeeCord.java

@@ -6,6 +6,7 @@ import io.netty.channel.Channel;
 import io.netty.channel.ChannelException;
 import io.netty.channel.MultithreadEventLoopGroup;
 import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
 import net.md_5.bungee.config.Configuration;
 import java.io.BufferedReader;
 import java.io.File;
@@ -38,7 +39,7 @@ import net.md_5.bungee.api.plugin.Plugin;
 import net.md_5.bungee.api.plugin.PluginManager;
 import net.md_5.bungee.command.*;
 import net.md_5.bungee.config.YamlConfig;
-import net.md_5.bungee.netty.ChannelBootstrapper;
+import net.md_5.bungee.netty.PipelineUtils;
 import net.md_5.bungee.packet.DefinedPacket;
 import net.md_5.bungee.packet.PacketFAPluginMessage;
 
@@ -186,9 +187,11 @@ public class BungeeCord extends ProxyServer
         for ( ListenerInfo info : config.getListeners() )
         {
             Channel server = new ServerBootstrap()
-                    .childHandler( ChannelBootstrapper.SERVER )
+                    .channel( NioServerSocketChannel.class)
-                    .localAddress( info.getHost() )
+                    .childHandler( PipelineUtils.SERVER_CHILD )
                     .group( eventLoops )
+                    .localAddress( info.getHost() )
+                    .attr( PipelineUtils.LISTENER, info)
                     .bind().channel();
             listeners.add( server );
 

proxy/src/main/java/net/md_5/bungee/BungeeServerInfo.java

@@ -9,6 +9,9 @@ import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.ServerPing;
 import net.md_5.bungee.api.config.ServerInfo;
 import net.md_5.bungee.api.connection.Server;
+import net.md_5.bungee.connection.PingHandler;
+import net.md_5.bungee.netty.HandlerBoss;
+import net.md_5.bungee.netty.PipelineUtils;
 import net.md_5.bungee.packet.DefinedPacket;
 import net.md_5.bungee.packet.PacketFAPluginMessage;
 
@@ -39,5 +42,6 @@ public class BungeeServerInfo extends ServerInfo
     @Override
     public void ping(final Callback<ServerPing> callback)
     {
+        PipelineUtils.connectClient( getAddress() ).channel().pipeline().get( HandlerBoss.class ).setHandler( new PingHandler( callback ) );
     }
 }

proxy/src/main/java/net/md_5/bungee/ServerConnector.java

@@ -11,7 +11,8 @@ import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.config.ServerInfo;
 import net.md_5.bungee.api.event.ServerConnectEvent;
 import net.md_5.bungee.api.event.ServerConnectedEvent;
-import net.md_5.bungee.netty.ChannelBootstrapper;
+import net.md_5.bungee.netty.HandlerBoss;
+import net.md_5.bungee.netty.PipelineUtils;
 import net.md_5.bungee.packet.DefinedPacket;
 import net.md_5.bungee.packet.Packet1Login;
 import net.md_5.bungee.packet.Packet9Respawn;
@@ -25,7 +26,7 @@ public class ServerConnector extends PacketHandler
 {
 
     private final ProxyServer bungee;
-    private final Channel ch;
+    private Channel ch;
     private final UserConnection user;
     private final ServerInfo target;
     private State thisState = State.ENCRYPT_REQUEST;
@@ -36,6 +37,14 @@ public class ServerConnector extends PacketHandler
         ENCRYPT_REQUEST, LOGIN, FINISHED;
     }
 
+    @Override
+    public void connected(Channel channel) throws Exception
+    {
+        this.ch = channel;
+        channel.write( user.handshake );
+        channel.write( PacketCDClientStatus.CLIENT_LOGIN );
+    }
+
     @Override
     public void handle(Packet1Login login) throws Exception
     {
@@ -112,16 +121,12 @@ public class ServerConnector extends PacketHandler
         ProxyServer.getInstance().getPluginManager().callEvent( event );
         final ServerInfo target = event.getTarget(); // Update in case the event changed target
 
-        ChannelBootstrapper.CLIENT.connectClient( info.getAddress() ).addListener( new ChannelFutureListener()
+        PipelineUtils.connectClient( info.getAddress() ).addListener( new ChannelFutureListener()
         {
             @Override
             public void operationComplete(ChannelFuture future) throws Exception
             {
-                if ( future.isSuccess() )
+                if ( !future.isSuccess() )
-                {
-                    future.channel().write( user.handshake );
-                    future.channel().write( PacketCDClientStatus.CLIENT_LOGIN );
-                } else
                 {
                     future.channel().close();
                     ServerInfo def = ProxyServer.getInstance().getServers().get( user.getPendingConnection().getListener().getDefaultServer() );
@@ -132,6 +137,6 @@ public class ServerConnector extends PacketHandler
                     }
                 }
             }
-        } ).channel();
+        } ).channel().pipeline().get( HandlerBoss.class).setHandler( new ServerConnector( ProxyServer.getInstance(), user, target));
     }
 }

proxy/src/main/java/net/md_5/bungee/connection/InitialHandler.java

@@ -47,7 +47,7 @@ public class InitialHandler extends PacketHandler implements PendingConnection
 {
 
     private final ProxyServer bungee;
-    private final Channel ch;
+    private Channel ch;
     @Getter
     private final ListenerInfo listener;
     private Packet1Login forgeLogin;
@@ -66,6 +66,12 @@ public class InitialHandler extends PacketHandler implements PendingConnection
         HANDSHAKE, ENCRYPT, LOGIN, FINISHED;
     }
 
+    @Override
+    public void connected(Channel channel) throws Exception
+    {
+        this.ch = channel;
+    }
+
     @Override
     public void handle(Packet1Login login) throws Exception
     {

proxy/src/main/java/net/md_5/bungee/netty/ChannelBootstrapper.java

@@ -1,63 +0,0 @@
-package net.md_5.bungee.netty;
-
-import io.netty.bootstrap.Bootstrap;
-import io.netty.channel.Channel;
-import io.netty.channel.ChannelException;
-import io.netty.channel.ChannelFuture;
-import io.netty.channel.ChannelInitializer;
-import io.netty.channel.ChannelOption;
-import io.netty.channel.socket.nio.NioSocketChannel;
-import io.netty.handler.timeout.ReadTimeoutHandler;
-import java.lang.reflect.Constructor;
-import java.net.SocketAddress;
-import java.util.concurrent.TimeUnit;
-import net.md_5.bungee.BungeeCord;
-import net.md_5.bungee.connection.InitialHandler;
-import net.md_5.bungee.ServerConnector;
-import net.md_5.bungee.packet.PacketHandler;
-import net.md_5.bungee.protocol.PacketDefinitions;
-
-public class ChannelBootstrapper extends ChannelInitializer<Channel>
-{
-
-    public static ChannelBootstrapper CLIENT = new ChannelBootstrapper( InitialHandler.class );
-    public static ChannelBootstrapper SERVER = new ChannelBootstrapper( ServerConnector.class );
-    private final Constructor<? extends PacketHandler> initial;
-
-    public ChannelFuture connectClient(SocketAddress remoteAddress)
-    {
-        return new Bootstrap()
-                .channel( NioSocketChannel.class )
-                .group( BungeeCord.getInstance().eventLoops )
-                .handler( this )
-                .remoteAddress( remoteAddress )
-                .connect();
-    }
-
-    private ChannelBootstrapper(Class<? extends PacketHandler> initialHandler)
-    {
-        try
-        {
-            this.initial = initialHandler.getDeclaredConstructor();
-        } catch ( NoSuchMethodException ex )
-        {
-            throw new ExceptionInInitializerError( ex );
-        }
-    }
-
-    @Override
-    protected void initChannel(Channel ch) throws Exception
-    {
-        try
-        {
-            ch.config().setOption( ChannelOption.IP_TOS, 0x18 );
-        } catch ( ChannelException ex )
-        {
-            // IP_TOS is not supported (Windows XP / Windows Server 2003)
-        }
-        ch.pipeline().addLast( "timer", new ReadTimeoutHandler( BungeeCord.getInstance().config.getTimeout(), TimeUnit.MILLISECONDS ) );
-        ch.pipeline().addLast( "decoder", new PacketDecoder( PacketDefinitions.VANILLA_PROTOCOL ) );
-
-        ch.pipeline().addLast( "handler", new HandlerBoss( initial.newInstance() ) );
-    }
-}

proxy/src/main/java/net/md_5/bungee/netty/HandlerBoss.java

@@ -12,12 +12,12 @@ import net.md_5.bungee.packet.PacketHandler;
  * channels to maintain simple states, and only call the required, adapted
  * methods when the channel is connected.
  */
-class HandlerBoss extends ChannelInboundMessageHandlerAdapter<ByteBuf>
+public class HandlerBoss extends ChannelInboundMessageHandlerAdapter<ByteBuf>
 {
 
     private PacketHandler handler;
 
-    HandlerBoss(PacketHandler handler)
+    public void setHandler(PacketHandler handler)
     {
         Preconditions.checkArgument( handler != null, "handler" );
         this.handler = handler;
@@ -26,19 +26,25 @@ class HandlerBoss extends ChannelInboundMessageHandlerAdapter<ByteBuf>
     @Override
     public void channelActive(ChannelHandlerContext ctx) throws Exception
     {
-        handler.connected( ctx.channel() );
+        if ( handler != null )
+        {
+            handler.connected( ctx.channel() );
+        }
     }
 
     @Override
     public void channelInactive(ChannelHandlerContext ctx) throws Exception
     {
-        handler.disconnected( ctx.channel() );
+        if ( handler != null )
+        {
+            handler.disconnected( ctx.channel() );
+        }
     }
 
     @Override
     protected void messageReceived(ChannelHandlerContext ctx, ByteBuf msg) throws Exception
     {
-        if ( ctx.channel().isActive() )
+        if ( handler != null && ctx.channel().isActive() )
         {
             DefinedPacket packet = DefinedPacket.packet( msg );
             if ( packet != null )

proxy/src/main/java/net/md_5/bungee/netty/PipelineUtils.java

@@ -0,0 +1,63 @@
+package net.md_5.bungee.netty;
+
+import io.netty.bootstrap.Bootstrap;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelException;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.socket.nio.NioSocketChannel;
+import io.netty.handler.timeout.ReadTimeoutHandler;
+import io.netty.util.AttributeKey;
+import java.net.SocketAddress;
+import java.util.concurrent.TimeUnit;
+import net.md_5.bungee.BungeeCord;
+import net.md_5.bungee.connection.InitialHandler;
+import net.md_5.bungee.api.ProxyServer;
+import net.md_5.bungee.api.config.ListenerInfo;
+import net.md_5.bungee.protocol.PacketDefinitions;
+
+public class PipelineUtils
+{
+
+    public static final AttributeKey<ListenerInfo> LISTENER = new AttributeKey<>( "ListerInfo" );
+    public static final ChannelInitializer<Channel> SERVER_CHILD = new ChannelInitializer<Channel>()
+    {
+        @Override
+        protected void initChannel(Channel ch) throws Exception
+        {
+            BASE.initChannel( ch );
+            ch.pipeline().get( HandlerBoss.class ).setHandler( new InitialHandler( ProxyServer.getInstance(), ch.attr( LISTENER ).get() ) );
+        }
+    };
+    private static final Base BASE = new Base();
+
+    private final static class Base extends ChannelInitializer<Channel>
+    {
+
+        @Override
+        public void initChannel(Channel ch) throws Exception
+        {
+            try
+            {
+                ch.config().setOption( ChannelOption.IP_TOS, 0x18 );
+            } catch ( ChannelException ex )
+            {
+                // IP_TOS is not supported (Windows XP / Windows Server 2003)
+            }
+            ch.pipeline().addLast( "timer", new ReadTimeoutHandler( BungeeCord.getInstance().config.getTimeout(), TimeUnit.MILLISECONDS ) );
+            ch.pipeline().addLast( "decoder", new PacketDecoder( PacketDefinitions.VANILLA_PROTOCOL ) );
+            ch.pipeline().addLast( "handler", new HandlerBoss() );
+        }
+    };
+
+    public static ChannelFuture connectClient(SocketAddress remoteAddress)
+    {
+        return new Bootstrap()
+                .channel( NioSocketChannel.class )
+                .group( BungeeCord.getInstance().eventLoops )
+                .handler( BASE )
+                .remoteAddress( remoteAddress )
+                .connect();
+    }
+}