diff --git a/chains/eosapi.go b/chains/eosapi.go
index ba44a4c..aaa2a1d 100644
--- a/chains/eosapi.go
+++ b/chains/eosapi.go
@@ -62,25 +62,24 @@ func (self *EOSAPI) DelegateREST(rootCtx context.Context, m *nodemuxcore.Multipl
 			chain.Log().Infof("retrieved block number %d from get_block request", requiredHeight)
 		}
 		r.Body = io.NopCloser(bytes.NewBuffer(body))
-		_, _, err0 := m.DefaultPipeTeeREST(rootCtx, chain, path, w, r, requiredHeight)
-		return err0
-	} else if path == "/v1/chain/get_info" {
-		requiredHeight = 0
-		ep, body, err := m.DefaultPipeTeeREST(rootCtx, chain, path, w, r, requiredHeight)
-		if err != nil || ep == nil || body == nil {
-			return err
-		}
-
-		var chainInfo eosapiChainInfo
-		if err := json.Unmarshal(body, &chainInfo); err != nil {
-			chain.Log().Warnf("json unmarshal body %#v", err)
-		}
-		block := &nodemuxcore.Block{
-			Height: chainInfo.LastBlockNum,
-			Hash:   chainInfo.LastBlockId,
-		}
-		m.UpdateBlockIfChanged(ep, block)
-		return nil
 	}
+	// } else if path == "/v1/chain/get_infoxx" {
+	// 	requiredHeight = 0
+	// 	ep, body, err := m.DefaultPipeTeeREST(rootCtx, chain, path, w, r, requiredHeight)
+	// 	if err != nil || ep == nil || body == nil {
+	// 		return err
+	// 	}
+
+	// 	var chainInfo eosapiChainInfo
+	// 	if err := json.Unmarshal(body, &chainInfo); err != nil {
+	// 		chain.Log().Warnf("json unmarshal body %#v", err)
+	// 	}
+	// 	block := &nodemuxcore.Block{
+	// 		Height: chainInfo.LastBlockNum,
+	// 		Hash:   chainInfo.LastBlockId,
+	// 	}
+	// 	m.UpdateBlockIfChanged(ep, block)
+	// 	return nil
+	// }
 	return m.DefaultPipeREST(rootCtx, chain, path, w, r, requiredHeight)
 }
diff --git a/core/endpoint.go b/core/endpoint.go
index fe70980..4bace3a 100644
--- a/core/endpoint.go
+++ b/core/endpoint.go
@@ -109,17 +109,26 @@ func (self *Endpoint) PipeRequest(rootCtx context.Context, path string, w http.R
 	}
 
 	// pipe the response
+
+	w.WriteHeader(resp.StatusCode)
+	//w.Header().Add("content-type", resp.Header.Get("content-type"))
+
 	for hn, hvs := range resp.Header {
 		for _, hv := range hvs {
 			w.Header().Add(hn, hv)
 		}
 	}
-	w.WriteHeader(resp.StatusCode)
-	io.Copy(w, resp.Body)
+	if written, err := io.Copy(w, resp.Body); err != nil {
+		self.Log().WithFields(log.Fields{
+			"written": written,
+			"path":    path,
+		}).Warnf("io copy error %#v", err)
+		return err
+	}
 	return nil
 }
 
-func (self *Endpoint) PipeTeeRequest(rootCtx context.Context, path string, w http.ResponseWriter, r *http.Request) ([]byte, error) {
+func (self *Endpoint) xxPipeTeeRequest(rootCtx context.Context, path string, w http.ResponseWriter, r *http.Request) ([]byte, error) {
 	resp, err := self.RespondRequest(rootCtx, path, r)
 	if err != nil {
 		if os.IsTimeout(err) {
@@ -132,6 +141,7 @@ func (self *Endpoint) PipeTeeRequest(rootCtx context.Context, path string, w htt
 
 	// pipe the response
 	w.WriteHeader(resp.StatusCode)
+
 	if resp.StatusCode == http.StatusOK {
 		for hn, hvs := range resp.Header {
 			if strings.ToLower(hn) == "content-type" {
@@ -160,8 +170,11 @@ func (self *Endpoint) PipeTeeRequest(rootCtx context.Context, path string, w htt
 func (self *Endpoint) RespondRequest(rootCtx context.Context, path string, r *http.Request) (*http.Response, error) {
 	self.Connect()
 	self.incrRelayCount()
-	ctx, cancel := context.WithCancel(rootCtx)
-	defer cancel()
+	//ctx, _ := context.WithCancel(rootCtx)
+	//defer cancel()
+
+	// ctx, cancel := context.WithTimeout(rootCtx, time.Second * 600)
+	// defer cancel()
 
 	// prepare request
 	// TODO: join the server url and method
@@ -170,7 +183,7 @@ func (self *Endpoint) RespondRequest(rootCtx context.Context, path string, r *ht
 	if err != nil {
 		return nil, err
 	}
-	req, err := http.NewRequestWithContext(ctx, r.Method, url, io.NopCloser(bytes.NewBuffer(body)))
+	req, err := http.NewRequestWithContext(rootCtx, r.Method, url, io.NopCloser(bytes.NewBuffer(body)))
 	if err != nil {
 		return nil, errors.Wrap(err, "http.NewRequestWithContext")
 	}
diff --git a/core/multiplexer.go b/core/multiplexer.go
index f5f9554..a5bc1c7 100644
--- a/core/multiplexer.go
+++ b/core/multiplexer.go
@@ -200,26 +200,26 @@ func (self *Multiplexer) DefaultRelayRPC(
 
 // Pipe the request to response and tee the choosed endpoint and the response body
 // for possible caching and handlers
-func (self *Multiplexer) DefaultPipeTeeREST(
-	rootCtx context.Context,
-	chain ChainRef,
-	path string,
-	w http.ResponseWriter,
-	r *http.Request, overHeight int) (*Endpoint, []byte, error) {
+// func (self *Multiplexer) DefaultPipeTeeREST(
+// 	rootCtx context.Context,
+// 	chain ChainRef,
+// 	path string,
+// 	w http.ResponseWriter,
+// 	r *http.Request, overHeight int) (*Endpoint, []byte, error) {
 
-	ep, found := self.SelectOverHeight(chain, path, overHeight)
-	if !found {
-		if overHeight > 0 {
-			// if not find then relay to any healthy endpoint
-			return self.DefaultPipeTeeREST(rootCtx, chain, path, w, r, -2)
-		}
-		w.WriteHeader(404)
-		w.Write([]byte("not found"))
-		return ep, nil, nil
-	}
-	body, err := ep.PipeTeeRequest(rootCtx, path, w, r)
-	return ep, body, err
-}
+// 	ep, found := self.SelectOverHeight(chain, path, overHeight)
+// 	if !found {
+// 		if overHeight > 0 {
+// 			// if not find then relay to any healthy endpoint
+// 			return self.DefaultPipeTeeREST(rootCtx, chain, path, w, r, -2)
+// 		}
+// 		w.WriteHeader(404)
+// 		w.Write([]byte("not found"))
+// 		return ep, nil, nil
+// 	}
+// 	body, err := ep.xxPipeTeeRequest(rootCtx, path, w, r)
+// 	return ep, body, err
+// }
 
 // Pipe the request to response
 func (self *Multiplexer) DefaultPipeREST(rootCtx context.Context, chain ChainRef, path string, w http.ResponseWriter, r *http.Request, overHeight int) error {