mark4z commented on code in PR #548:
URL: https://github.com/apache/dubbo-go-pixiu/pull/548#discussion_r1141261139


##########
pixiu/pkg/client/triple/triple.go:
##########
@@ -68,40 +76,47 @@ func (tc *Client) MapParams(req *client.Request) (reqData 
interface{}, err error
 }
 
 // Close clear GenericServicePool.
-func (dc *Client) Close() error {
+func (tc *Client) Close() error {
        return nil
 }
 
 // SingletonTripleClient singleton dubbo clent
-func SingletonTripleClient() *Client {
-       return NewTripleClient()
+func SingletonTripleClient(protoset []string) *Client {
+       return NewTripleClient(protoset)
 }
 
 // Call invoke service
-func (dc *Client) Call(req *client.Request) (res interface{}, err error) {
+func (tc *Client) Call(req *client.Request) (res interface{}, err error) {
        address := 
strings.Split(req.API.IntegrationRequest.HTTPBackendConfig.URL, ":")
-       p := proxy.NewProxy()
+       p := proxy.NewProxy(tc.protosetSource)
        targetURL := &url.URL{
                Scheme: address[0],
                Opaque: address[1],
        }
        if err := p.Connect(context.Background(), targetURL); err != nil {
                return "", errors.Errorf("connect triple server error = %s", 
err)
        }
+
+       header := tc.forwardHeaders(req.IngressRequest.Header)
+       ctx := metadata.NewOutgoingContext(context.Background(), header)
        meta := make(map[string][]string)
        reqData, _ := io.ReadAll(req.IngressRequest.Body)

Review Comment:
   Do not ignore the error if the request body cannot be read, handle it or 
throw it.



##########
pixiu/pkg/client/triple/triple.go:
##########
@@ -68,40 +76,47 @@ func (tc *Client) MapParams(req *client.Request) (reqData 
interface{}, err error
 }
 
 // Close clear GenericServicePool.
-func (dc *Client) Close() error {
+func (tc *Client) Close() error {
        return nil
 }
 
 // SingletonTripleClient singleton dubbo clent
-func SingletonTripleClient() *Client {
-       return NewTripleClient()
+func SingletonTripleClient(protoset []string) *Client {
+       return NewTripleClient(protoset)
 }
 
 // Call invoke service
-func (dc *Client) Call(req *client.Request) (res interface{}, err error) {
+func (tc *Client) Call(req *client.Request) (res interface{}, err error) {
        address := 
strings.Split(req.API.IntegrationRequest.HTTPBackendConfig.URL, ":")
-       p := proxy.NewProxy()
+       p := proxy.NewProxy(tc.protosetSource)

Review Comment:
   can we share it as a singleton



##########
pixiu/pkg/client/proxy/descriptor_source.go:
##########
@@ -0,0 +1,137 @@
+/*
+ * 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.
+ */

Review Comment:
   Leave some comments or links indicating that this code was copied from grpcur



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