fix h2 curl error

dubbo-remoting/dubbo-remoting-http12/pom.xml

@@ -46,6 +46,10 @@
             <artifactId>dubbo-remoting-api</artifactId>
             <version>${project.parent.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.google.protobuf</groupId>
+            <artifactId>protobuf-java-util</artifactId>
+        </dependency>
 
         <dependency>
             <groupId>io.netty</groupId>

dubbo-remoting/dubbo-remoting-http12/src/main/java/org/apache/dubbo/remoting/http12/message/JsonCodec.java

@@ -17,8 +17,11 @@
 package org.apache.dubbo.remoting.http12.message;
 
 import com.alibaba.fastjson2.JSONObject;
+import com.google.protobuf.Message;
+import com.google.protobuf.util.JsonFormat;
 import org.apache.dubbo.common.extension.Activate;
 import org.apache.dubbo.common.utils.JsonUtils;
+import org.apache.dubbo.common.utils.MethodUtils;
 import org.apache.dubbo.remoting.http12.exception.DecodeException;
 import org.apache.dubbo.remoting.http12.exception.EncodeException;
 
@@ -45,6 +48,11 @@ public MediaType contentType() {
     public void encode(OutputStream outputStream, Object unSerializedBody) throws EncodeException {
         try {
             try {
+                if (unSerializedBody instanceof Message) {
+                    String jsonString = JsonFormat.printer().print((Message) unSerializedBody);
+                    outputStream.write(jsonString.getBytes(StandardCharsets.UTF_8));
+                    return;
+                }
                 String jsonString = JsonUtils.toJson(unSerializedBody);
                 outputStream.write(jsonString.getBytes(StandardCharsets.UTF_8));
             } finally {
@@ -79,6 +87,11 @@ public Object decode(InputStream body, Class<?> targetType) throws DecodeExcepti
                 while ((len = body.read(data)) != -1) {
                     builder.append(new String(data, 0, len));
                 }
+                if (isProtobuf(targetType)) {
+                    Message.Builder newBuilder = (Message.Builder) MethodUtils.findMethod(targetType, "newBuilder").invoke(null);
+                    JsonFormat.parser().ignoringUnknownFields().merge(builder.toString(), newBuilder);
+                    return newBuilder.build();
+                }
                 return JsonUtils.toJavaObject(builder.toString(), targetType);
             } finally {
                 body.close();
@@ -124,4 +137,11 @@ public Object[] decode(InputStream dataInputStream, Class<?>[] targetTypes) thro
         }
     }
 
+    private boolean isProtobuf(Class<?> targetType) {
+        if (targetType == null) {
+            return false;
+        }
+        return Message.class.isAssignableFrom(targetType);
+    }
+
 }

dubbo-remoting/dubbo-remoting-http12/src/main/java/org/apache/dubbo/remoting/http12/message/NoOpStreamingDecoder.java

@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.dubbo.remoting.http12.message;
+
+import org.apache.dubbo.remoting.http12.exception.DecodeException;
+
+import java.io.InputStream;
+
+public class NoOpStreamingDecoder implements StreamingDecoder {
+
+    private FragmentListener listener;
+
+    @Override
+    public void request(int numMessages) {
+        // do nothing
+    }
+
+    @Override
+    public void decode(InputStream inputStream) throws DecodeException {
+        listener.onFragmentMessage(inputStream);
+    }
+
+    @Override
+    public void close() {
+        this.listener.onClose();
+    }
+
+    @Override
+    public void setFragmentListener(FragmentListener listener) {
+        this.listener = listener;
+    }
+}

dubbo-rpc/dubbo-rpc-triple/src/main/java/org/apache/dubbo/rpc/protocol/tri/h12/AbstractServerTransportListener.java

@@ -118,17 +118,20 @@ public void onMetadata(HEADER metadata) {
         try {
             this.executor = initializeExecutor(metadata);
         } catch (Throwable throwable) {
+            LOGGER.error("initialize executor fail.", throwable);
             onError(throwable);
             return;
         }
         if (this.executor == null) {
+            LOGGER.error("executor must be not null.");
             onError(new NullPointerException("initializeExecutor return null"));
             return;
         }
         executor.execute(() -> {
             try {
                 doOnMetadata(metadata);
             } catch (Throwable throwable) {
+                LOGGER.error("server internal error", throwable);
                 onError(throwable);
             }
         });
@@ -174,6 +177,7 @@ public void onData(MESSAGE message) {
             try {
                 doOnData(message);
             } catch (Throwable e) {
+                LOGGER.error("server internal error", e);
                 onError(e);
             }
         });

dubbo-rpc/dubbo-rpc-triple/src/main/java/org/apache/dubbo/rpc/protocol/tri/h12/http2/GenericHttp2ServerTransportListener.java

@@ -28,9 +28,9 @@
 import org.apache.dubbo.remoting.http12.h2.Http2TransportListener;
 import org.apache.dubbo.remoting.http12.message.DefaultListeningDecoder;
 import org.apache.dubbo.remoting.http12.message.JsonCodec;
-import org.apache.dubbo.remoting.http12.message.LengthFieldStreamingDecoder;
 import org.apache.dubbo.remoting.http12.message.ListeningDecoder;
 import org.apache.dubbo.remoting.http12.message.MethodMetadata;
+import org.apache.dubbo.remoting.http12.message.NoOpStreamingDecoder;
 import org.apache.dubbo.remoting.http12.message.StreamingDecoder;
 import org.apache.dubbo.rpc.CancellationContext;
 import org.apache.dubbo.rpc.Invoker;
@@ -116,8 +116,8 @@ public void cancelByRemote(long errorCode) {
     }
 
     protected StreamingDecoder newStreamingDecoder() {
-        //default lengthFieldLength = 4
-        return new LengthFieldStreamingDecoder();
+        //default no op
+        return new NoOpStreamingDecoder();
     }
 
     protected void doOnMetadata(Http2Header metadata) {