Rename SimpleChannelInboundHandler.channelRead0() to messageReceived()

- Related: #1590

example/src/main/java/io/netty/example/applet/AppletDiscardServer.java

@@ -75,7 +75,7 @@ public class AppletDiscardServer extends JApplet {
     private static final class DiscardServerHandler extends SimpleChannelInboundHandler<ByteBuf> {
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
             System.out.println("Received: " + msg.toString(CharsetUtil.UTF_8));
         }
 

example/src/main/java/io/netty/example/discard/DiscardClientHandler.java

@@ -62,7 +62,7 @@ public class DiscardClientHandler extends SimpleChannelInboundHandler<Object> {
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
         // Server is supposed to send nothing, but if it sends something, discard it.
     }
 

example/src/main/java/io/netty/example/discard/DiscardServerHandler.java

@@ -30,7 +30,7 @@ public class DiscardServerHandler extends SimpleChannelInboundHandler<Object> {
             DiscardServerHandler.class.getName());
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
         // discard
     }
 

example/src/main/java/io/netty/example/factorial/FactorialClientHandler.java

@@ -70,7 +70,7 @@ public class FactorialClientHandler extends SimpleChannelInboundHandler<BigInteg
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, final BigInteger msg) {
+    public void messageReceived(ChannelHandlerContext ctx, final BigInteger msg) {
         receivedMessages ++;
         if (receivedMessages == count) {
             // Offer the answer after closing the connection.

example/src/main/java/io/netty/example/factorial/FactorialServerHandler.java

@@ -39,7 +39,7 @@ public class FactorialServerHandler extends SimpleChannelInboundHandler<BigInteg
     private BigInteger factorial = new BigInteger("1");
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, BigInteger msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, BigInteger msg) throws Exception {
         // Calculate the cumulative factorial and send it to the client.
         lastMultiplier = msg;
         factorial = factorial.multiply(msg);

example/src/main/java/io/netty/example/filetransfer/FileServer.java

@@ -93,7 +93,7 @@ public class FileServer {
 
     private static final class FileHandler extends SimpleChannelInboundHandler<String> {
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
             File file = new File(msg);
             if (file.exists()) {
                 if (!file.isFile()) {

example/src/main/java/io/netty/example/http/file/HttpStaticFileServerHandler.java

@@ -114,7 +114,7 @@ public class HttpStaticFileServerHandler extends SimpleChannelInboundHandler<Ful
     }
 
     @Override
-    public void channelRead0(
+    public void messageReceived(
             ChannelHandlerContext ctx, FullHttpRequest request) throws Exception {
         if (!request.getDecoderResult().isSuccess()) {
             sendError(ctx, BAD_REQUEST);

example/src/main/java/io/netty/example/http/snoop/HttpSnoopClientHandler.java

@@ -27,7 +27,7 @@ import io.netty.util.CharsetUtil;
 public class HttpSnoopClientHandler extends SimpleChannelInboundHandler<HttpObject> {
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
         if (msg instanceof HttpResponse) {
             HttpResponse response = (HttpResponse) msg;
 

example/src/main/java/io/netty/example/http/snoop/HttpSnoopServerHandler.java

@@ -55,7 +55,7 @@ public class HttpSnoopServerHandler extends SimpleChannelInboundHandler<Object>
     }
 
     @Override
-    protected void channelRead0(ChannelHandlerContext ctx, Object msg) {
+    protected void messageReceived(ChannelHandlerContext ctx, Object msg) {
         if (msg instanceof HttpRequest) {
             HttpRequest request = this.request = (HttpRequest) msg;
 

example/src/main/java/io/netty/example/http/upload/HttpUploadClientHandler.java

@@ -36,7 +36,7 @@ public class HttpUploadClientHandler extends SimpleChannelInboundHandler<HttpObj
     private boolean readingChunks;
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
         if (msg instanceof HttpResponse) {
             HttpResponse response = (HttpResponse) msg;
 

example/src/main/java/io/netty/example/http/upload/HttpUploadServerHandler.java

@@ -95,7 +95,7 @@ public class HttpUploadServerHandler extends SimpleChannelInboundHandler<HttpObj
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
         if (msg instanceof HttpRequest) {
             HttpRequest request = this.request = (HttpRequest) msg;
             URI uri = new URI(request.getUri());

example/src/main/java/io/netty/example/http/websocketx/client/WebSocketClientHandler.java

@@ -79,7 +79,7 @@ public class WebSocketClientHandler extends SimpleChannelInboundHandler<Object>
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
         Channel ch = ctx.channel();
         if (!handshaker.isHandshakeComplete()) {
             handshaker.finishHandshake(ch, (FullHttpResponse) msg);

example/src/main/java/io/netty/example/http/websocketx/html5/CustomTextFrameHandler.java

@@ -21,7 +21,7 @@ import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
 
 public class CustomTextFrameHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {
     @Override
-    protected void channelRead0(ChannelHandlerContext ctx, TextWebSocketFrame frame) throws Exception {
+    protected void messageReceived(ChannelHandlerContext ctx, TextWebSocketFrame frame) throws Exception {
         String request = frame.text();
         ctx.channel().writeAndFlush(new TextWebSocketFrame(request.toUpperCase()));
     }

example/src/main/java/io/netty/example/http/websocketx/server/WebSocketServerHandler.java

@@ -53,7 +53,7 @@ public class WebSocketServerHandler extends SimpleChannelInboundHandler<Object>
     private WebSocketServerHandshaker handshaker;
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
         if (msg instanceof FullHttpRequest) {
             handleHttpRequest(ctx, (FullHttpRequest) msg);
         } else if (msg instanceof WebSocketFrame) {

example/src/main/java/io/netty/example/http/websocketx/sslserver/WebSocketSslServerHandler.java

@@ -54,7 +54,7 @@ public class WebSocketSslServerHandler extends SimpleChannelInboundHandler<Objec
     private WebSocketServerHandshaker handshaker;
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
         if (msg instanceof FullHttpRequest) {
             handleHttpRequest(ctx, (FullHttpRequest) msg);
         } else if (msg instanceof WebSocketFrame) {

example/src/main/java/io/netty/example/localecho/LocalEchoClientHandler.java

@@ -21,7 +21,7 @@ import io.netty.channel.SimpleChannelInboundHandler;
 public class LocalEchoClientHandler extends SimpleChannelInboundHandler<Object> {
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
         // Print as received
         System.out.println(msg);
     }

example/src/main/java/io/netty/example/qotm/QuoteOfTheMomentClientHandler.java

@@ -23,7 +23,7 @@ import io.netty.util.CharsetUtil;
 public class QuoteOfTheMomentClientHandler extends SimpleChannelInboundHandler<DatagramPacket> {
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
         String response = msg.content().toString(CharsetUtil.UTF_8);
         if (response.startsWith("QOTM: ")) {
             System.out.println("Quote of the Moment: " + response.substring(6));

example/src/main/java/io/netty/example/qotm/QuoteOfTheMomentServerHandler.java

@@ -44,7 +44,7 @@ public class QuoteOfTheMomentServerHandler extends SimpleChannelInboundHandler<D
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, DatagramPacket packet) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, DatagramPacket packet) throws Exception {
         System.err.println(packet);
         if ("QOTM?".equals(packet.content().toString(CharsetUtil.UTF_8))) {
             ctx.write(new DatagramPacket(

example/src/main/java/io/netty/example/rxtx/RxtxClientHandler.java

@@ -26,7 +26,7 @@ public class RxtxClientHandler extends SimpleChannelInboundHandler<String> {
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
         if ("OK".equals(msg)) {
             System.out.println("Serial port responded to AT");
         } else {

example/src/main/java/io/netty/example/securechat/SecureChatClientHandler.java

@@ -30,7 +30,7 @@ public class SecureChatClientHandler extends SimpleChannelInboundHandler<String>
             SecureChatClientHandler.class.getName());
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
         System.err.println(msg);
     }
 

example/src/main/java/io/netty/example/securechat/SecureChatServerHandler.java

@@ -61,7 +61,7 @@ public class SecureChatServerHandler extends SimpleChannelInboundHandler<String>
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
         // Send the received message to all channels but the current one.
         for (Channel c: channels) {
             if (c != ctx.channel()) {

example/src/main/java/io/netty/example/socksproxy/SocksServerConnectHandler.java

@@ -42,8 +42,8 @@ public final class SocksServerConnectHandler extends SimpleChannelInboundHandler
     private final Bootstrap b = new Bootstrap();
 
     @Override
-    public void channelRead0(final ChannelHandlerContext ctx, final SocksCmdRequest request) throws Exception {
-        Promise promise = ctx.executor().newPromise();
+    public void messageReceived(final ChannelHandlerContext ctx, final SocksCmdRequest request) throws Exception {
+        Promise<Channel> promise = ctx.executor().newPromise();
         promise.addListener(
             new GenericFutureListener<Future<Channel>>() {
             @Override

example/src/main/java/io/netty/example/socksproxy/SocksServerHandler.java

@@ -37,7 +37,7 @@ public final class SocksServerHandler extends SimpleChannelInboundHandler<SocksR
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, SocksRequest socksRequest) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, SocksRequest socksRequest) throws Exception {
         switch (socksRequest.requestType()) {
             case INIT: {
 //                auth support example

example/src/main/java/io/netty/example/telnet/TelnetClientHandler.java

@@ -31,7 +31,7 @@ public class TelnetClientHandler extends SimpleChannelInboundHandler<String> {
     private static final Logger logger = Logger.getLogger(TelnetClientHandler.class.getName());
 
     @Override
-    protected void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
+    protected void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
         System.err.println(msg);
     }
 

example/src/main/java/io/netty/example/telnet/TelnetServerHandler.java

@@ -44,7 +44,7 @@ public class TelnetServerHandler extends SimpleChannelInboundHandler<String> {
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, String request) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, String request) throws Exception {
 
         // Generate and write a response.
         String response;

example/src/main/java/io/netty/example/udt/echo/bytes/ByteEchoClientHandler.java

@@ -58,7 +58,7 @@ public class ByteEchoClientHandler extends SimpleChannelInboundHandler<ByteBuf>
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
         meter.mark(msg.readableBytes());
 
         ctx.write(msg);

example/src/main/java/io/netty/example/udt/echo/message/MsgEchoClientHandler.java

@@ -65,7 +65,7 @@ public class MsgEchoClientHandler extends SimpleChannelInboundHandler<UdtMessage
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, UdtMessage msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, UdtMessage msg) throws Exception {
         meter.mark(msg.content().readableBytes());
 
         ctx.write(msg);

example/src/main/java/io/netty/example/udt/echo/rendezvous/MsgEchoPeerHandler.java

@@ -66,7 +66,7 @@ public class MsgEchoPeerHandler extends
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, UdtMessage message) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, UdtMessage message) throws Exception {
         meter.mark(message.content().readableBytes());
 
         ctx.write(message);

example/src/main/java/io/netty/example/udt/echo/rendezvousBytes/ByteEchoPeerHandler.java

@@ -60,7 +60,7 @@ public class ByteEchoPeerHandler extends SimpleChannelInboundHandler<ByteBuf> {
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, ByteBuf buf) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, ByteBuf buf) throws Exception {
         meter.mark(buf.readableBytes());
 
         ctx.write(buf);

example/src/main/java/io/netty/example/uptime/UptimeClientHandler.java

@@ -49,7 +49,7 @@ public class UptimeClientHandler extends SimpleChannelInboundHandler<Object> {
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
         // Discard received data
     }
 

example/src/main/java/io/netty/example/worldclock/WorldClockClientHandler.java

@@ -99,7 +99,7 @@ public class WorldClockClientHandler extends SimpleChannelInboundHandler<LocalTi
     }
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, LocalTimes times) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, LocalTimes times) throws Exception {
         answer.add(times);
     }
 

example/src/main/java/io/netty/example/worldclock/WorldClockServerHandler.java

@@ -37,7 +37,7 @@ public class WorldClockServerHandler extends SimpleChannelInboundHandler<Locatio
             WorldClockServerHandler.class.getName());
 
     @Override
-    public void channelRead0(ChannelHandlerContext ctx, Locations locations) throws Exception {
+    public void messageReceived(ChannelHandlerContext ctx, Locations locations) throws Exception {
         long currentTime = System.currentTimeMillis();
 
         LocalTimes.Builder builder = LocalTimes.newBuilder();

testsuite/src/test/java/io/netty/testsuite/transport/sctp/SctpEchoTest.java

@@ -149,7 +149,7 @@ public class SctpEchoTest extends AbstractSctpTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
             byte[] actual = new byte[in.readableBytes()];
             in.readBytes(actual);
 

testsuite/src/test/java/io/netty/testsuite/transport/socket/DatagramMulticastTest.java

@@ -45,7 +45,7 @@ public class DatagramMulticastTest extends AbstractDatagramTest {
 
         sb.handler(new SimpleChannelInboundHandler<Object>() {
             @Override
-            public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+            public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
                 // Nothing will be sent.
             }
         });
@@ -97,7 +97,7 @@ public class DatagramMulticastTest extends AbstractDatagramTest {
         private volatile boolean fail;
 
         @Override
-        protected void channelRead0(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
+        protected void messageReceived(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
             if (done) {
                 fail = true;
             }

testsuite/src/test/java/io/netty/testsuite/transport/socket/DatagramUnicastTest.java

@@ -41,7 +41,7 @@ public class DatagramUnicastTest extends AbstractDatagramTest {
 
         sb.handler(new SimpleChannelInboundHandler<DatagramPacket>() {
             @Override
-            public void channelRead0(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
+            public void messageReceived(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
                 assertEquals(1, msg.content().readInt());
                 latch.countDown();
             }
@@ -49,7 +49,7 @@ public class DatagramUnicastTest extends AbstractDatagramTest {
 
         cb.handler(new SimpleChannelInboundHandler<Object>() {
             @Override
-            public void channelRead0(ChannelHandlerContext ctx, Object msgs) throws Exception {
+            public void messageReceived(ChannelHandlerContext ctx, Object msgs) throws Exception {
                 // Nothing will be sent.
             }
         });
@@ -69,12 +69,13 @@ public class DatagramUnicastTest extends AbstractDatagramTest {
         run();
     }
 
+    @SuppressWarnings("deprecation")
     public void testSimpleSendWithoutBind(Bootstrap sb, Bootstrap cb) throws Throwable {
         final CountDownLatch latch = new CountDownLatch(1);
 
         sb.handler(new SimpleChannelInboundHandler<DatagramPacket>() {
             @Override
-            public void channelRead0(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
+            public void messageReceived(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
                 assertEquals(1, msg.content().readInt());
                 latch.countDown();
             }
@@ -82,7 +83,7 @@ public class DatagramUnicastTest extends AbstractDatagramTest {
 
         cb.handler(new SimpleChannelInboundHandler<Object>() {
             @Override
-            public void channelRead0(ChannelHandlerContext ctx, Object msgs) throws Exception {
+            public void messageReceived(ChannelHandlerContext ctx, Object msgs) throws Exception {
                 // Nothing will be sent.
             }
         });

testsuite/src/test/java/io/netty/testsuite/transport/socket/SocketBufReleaseTest.java

@@ -96,7 +96,7 @@ public class SocketBufReleaseTest extends AbstractSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
             // discard
         }
 

testsuite/src/test/java/io/netty/testsuite/transport/socket/SocketEchoTest.java

@@ -199,7 +199,7 @@ public class SocketEchoTest extends AbstractSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
             byte[] actual = new byte[in.readableBytes()];
             in.readBytes(actual);
 

testsuite/src/test/java/io/netty/testsuite/transport/socket/SocketFileRegionTest.java

@@ -72,7 +72,7 @@ public class SocketFileRegionTest extends AbstractSocketTest {
 
         ChannelInboundHandler ch = new SimpleChannelInboundHandler<Object>() {
             @Override
-            public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+            public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
             }
 
             @Override
@@ -131,7 +131,7 @@ public class SocketFileRegionTest extends AbstractSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
             byte[] actual = new byte[in.readableBytes()];
             in.readBytes(actual);
 

testsuite/src/test/java/io/netty/testsuite/transport/socket/SocketFixedLengthEchoTest.java

@@ -134,7 +134,7 @@ public class SocketFixedLengthEchoTest extends AbstractSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
             assertEquals(1024, msg.readableBytes());
 
             byte[] actual = new byte[msg.readableBytes()];

testsuite/src/test/java/io/netty/testsuite/transport/socket/SocketGatheringWriteTest.java

@@ -132,7 +132,7 @@ public class SocketGatheringWriteTest extends AbstractSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
             counter += in.readableBytes();
             received.writeBytes(in);
         }

testsuite/src/test/java/io/netty/testsuite/transport/socket/SocketShutdownOutputByPeerTest.java

@@ -127,7 +127,7 @@ public class SocketShutdownOutputByPeerTest extends AbstractServerSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
             queue.offer(msg.readByte());
         }
 

testsuite/src/test/java/io/netty/testsuite/transport/socket/SocketShutdownOutputBySelfTest.java

@@ -86,7 +86,7 @@ public class SocketShutdownOutputBySelfTest extends AbstractClientSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
             queue.offer(msg.readByte());
         }
     }

testsuite/src/test/java/io/netty/testsuite/transport/socket/SocketSpdyEchoTest.java

@@ -251,7 +251,7 @@ public class SocketSpdyEchoTest extends AbstractSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
             byte[] actual = new byte[in.readableBytes()];
             in.readBytes(actual);
 

testsuite/src/test/java/io/netty/testsuite/transport/socket/SocketSslEchoTest.java

@@ -205,7 +205,7 @@ public class SocketSslEchoTest extends AbstractSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
             byte[] actual = new byte[in.readableBytes()];
             in.readBytes(actual);
 

testsuite/src/test/java/io/netty/testsuite/transport/socket/SocketStartTlsTest.java

@@ -159,7 +159,7 @@ public class SocketStartTlsTest extends AbstractSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
             if ("StartTlsResponse".equals(msg)) {
                 ctx.pipeline().addAfter("logger", "ssl", sslHandler);
                 handshakeFuture = sslHandler.handshakeFuture();
@@ -201,7 +201,7 @@ public class SocketStartTlsTest extends AbstractSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
             if ("StartTlsRequest".equals(msg)) {
                 ctx.pipeline().addAfter("logger", "ssl", sslHandler);
                 ctx.writeAndFlush("StartTlsResponse\n");

testsuite/src/test/java/io/netty/testsuite/transport/socket/SocketStringEchoTest.java

@@ -146,7 +146,7 @@ public class SocketStringEchoTest extends AbstractSocketTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
             assertEquals(data[counter], msg);
 
             if (channel.parent() != null) {

testsuite/src/test/java/io/netty/testsuite/transport/udt/UDTClientServerConnectionTest.java

@@ -167,7 +167,7 @@ public class UDTClientServerConnectionTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
             log.info("Client received: " + msg);
         }
     }
@@ -320,7 +320,7 @@ public class UDTClientServerConnectionTest {
         }
 
         @Override
-        public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
+        public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
             log.info("Server received: " + msg);
         }
     }

transport/src/main/java/io/netty/channel/SimpleChannelInboundHandler.java

@@ -28,7 +28,7 @@ import io.netty.util.internal.TypeParameterMatcher;
  *             {@link SimpleChannelInboundHandler}<{@link String}> {
  *
  *         {@code @Override}
- *         protected void channelRead0({@link ChannelHandlerContext} ctx, {@link String} message)
+ *         protected void messageReceived({@link ChannelHandlerContext} ctx, {@link String} message)
  *                 throws {@link Exception} {
  *             System.out.println(message);
  *         }
@@ -37,6 +37,11 @@ import io.netty.util.internal.TypeParameterMatcher;
  *
  * Be aware that depending of the constructor parameters it will release all handled messages.
  *
+ * <h3>Backward compatibility consideration</h3>
+ * <p>
+ * Since 5.0, {@code channelRead0(ChannelHandlerContext, I)} has been renamed to
+ * {@link #messageReceived(ChannelHandlerContext, Object)}.
+ * </p>
  */
 public abstract class SimpleChannelInboundHandler<I> extends ChannelInboundHandlerAdapter {
 
@@ -95,7 +100,7 @@ public abstract class SimpleChannelInboundHandler<I> extends ChannelInboundHandl
             if (acceptInboundMessage(msg)) {
                 @SuppressWarnings("unchecked")
                 I imsg = (I) msg;
-                channelRead0(ctx, imsg);
+                messageReceived(ctx, imsg);
             } else {
                 release = false;
                 ctx.fireChannelRead(msg);
@@ -115,5 +120,5 @@ public abstract class SimpleChannelInboundHandler<I> extends ChannelInboundHandl
      * @param msg           the message to handle
      * @throws Exception    is thrown if an error occurred
      */
-    protected abstract void channelRead0(ChannelHandlerContext ctx, I msg) throws Exception;
+    protected abstract void messageReceived(ChannelHandlerContext ctx, I msg) throws Exception;
 }