apache#1

dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/migration/MigrationRuleListener.java

@@ -100,6 +100,7 @@ public synchronized void onRefer(RegistryProtocol registryProtocol, ClusterInvok
 
     @Override
     public void onDestroy() {
-        configuration.removeListener(RULE_KEY, this);
+        if (configuration != null)
+            configuration.removeListener(RULE_KEY, this);
     }
 }

dubbo-remoting/dubbo-remoting-api/src/main/java/org/apache/dubbo/remoting/netty4/PortUnificationServer.java

@@ -163,7 +163,6 @@ protected void doClose() throws Throwable {
             }
 
             channelGroup.close();
-            Thread.sleep(1000000);
         } catch (Throwable e) {
             logger.warn(e.getMessage(), e);
         }

dubbo-rpc/dubbo-rpc-triple/src/main/java/org/apache/dubbo/rpc/protocol/tri/GracefulShutdown.java

@@ -33,7 +33,6 @@ public void gracefulShutdown() {
             .writeAscii(ctx.alloc(), goAwayMessage));
         goAwayFrame.setExtraStreamIds(Integer.MAX_VALUE);
         ctx.write(goAwayFrame);
-
         pingFuture = ctx.executor().schedule(
             () -> secondGoAwayAndClose(ctx),
             GRACEFUL_SHUTDOWN_PING_TIMEOUT_NANOS,
@@ -53,6 +52,10 @@ void secondGoAwayAndClose(ChannelHandlerContext ctx) {
         pingFuture.cancel(false);
 
         try {
+            Http2GoAwayFrame goAwayFrame = new DefaultHttp2GoAwayFrame(Http2Error.NO_ERROR, ByteBufUtil.writeAscii(this.ctx.alloc(), this.goAwayMessage));
+            ctx.write(goAwayFrame);
+            ctx.flush();
+            //gracefulShutdownTimeoutMillis
             ctx.close();
         } catch (Exception e) {
             ctx.fireExceptionCaught(e);

dubbo-rpc/dubbo-rpc-triple/src/main/java/org/apache/dubbo/rpc/protocol/tri/GracefulShutdownHandler.java

@@ -1,30 +1,15 @@
 package org.apache.dubbo.rpc.protocol.tri;
 
-import io.netty.channel.ChannelDuplexHandler;
-import io.netty.channel.ChannelHandler.Sharable;
+
 import io.netty.channel.ChannelHandlerContext;
-import io.netty.channel.ChannelInboundHandlerAdapter;
-import io.netty.channel.ChannelPipeline;
 import io.netty.channel.ChannelPromise;
-import io.netty.handler.codec.http2.Http2ConnectionDecoder;
-import io.netty.handler.codec.http2.Http2ConnectionEncoder;
-import io.netty.handler.codec.http2.Http2FrameCodec;
-import io.netty.handler.codec.http2.Http2FrameCodecBuilder;
-import io.netty.handler.codec.http2.Http2MultiplexHandler;
-import io.netty.handler.codec.http2.Http2Settings;
-import io.netty.handler.ssl.SslContext;
-import org.apache.dubbo.common.extension.Activate;
-import org.apache.dubbo.remoting.netty4.Http2WireProtocol;
-
+import io.netty.handler.codec.http2.Http2ChannelDuplexHandler;
 
-public class GracefulShutdownHandler extends Http2FrameCodec {
 
-    public GracefulShutdownHandler() {
-    }
+public class GracefulShutdownHandler extends Http2ChannelDuplexHandler {
 
     @Override
     public void close(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
-        super.close(ctx, promise);
         new GracefulShutdown(ctx,"app_requested", null).gracefulShutdown();
     }
 }

dubbo-rpc/dubbo-rpc-triple/src/main/java/org/apache/dubbo/rpc/protocol/tri/TripleHttp2FrameServerHandler.java

@@ -131,15 +131,4 @@ public void onHeadersRead(ChannelHandlerContext ctx, Http2HeadersFrame msg) {
             serverStream.halfClose();
         }
     }
-
-    private GracefulShutdown gracefulShutdown;
-
-    @Override
-    public void close(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
-        if (gracefulShutdown == null) {
-            gracefulShutdown = new GracefulShutdown(ctx,"app_requested", null);
-            gracefulShutdown.gracefulShutdown();
-            ctx.flush();
-        }
-    }
 }

dubbo-rpc/dubbo-rpc-triple/src/main/java/org/apache/dubbo/rpc/protocol/tri/TripleHttp2Protocol.java

@@ -28,8 +28,7 @@ public void configServerPipeline(ChannelPipeline pipeline) {
                 .frameLogger(SERVER_LOGGER)
                 .build();
         final Http2MultiplexHandler handler = new Http2MultiplexHandler(new TripleServerInitializer());
-        pipeline.addLast("gracefulShutdown", new GracefulShutdownHandler());
-        pipeline.addLast(codec, handler);
+        pipeline.addLast(codec, new GracefulShutdownHandler(), handler);
     }
 
     @Override