fix h2 curl error

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/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) {