diff --git a/python/sample/client_http_protobuf.py b/python/sample/client_http_protobuf.py
new file mode 100755
index 0000000..1a05185
--- /dev/null
+++ b/python/sample/client_http_protobuf.py
@@ -0,0 +1,50 @@
+# -*- coding:UTF-8 -*-
+
+# Copyright (c) 2014 Baidu.com, Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# This is a sample code to show how to use python client of sofa-pbrpc.
+#
+# Preconditions:
+#   * The protobuf python lib has been installed.
+#   * The sofa-pbrpc python lib has been installed.
+#   * The server in ../../sample/echo has been started.
+#
+# For more, please refer to `./README'.
+
+from sofa.pbrpc import client
+import echo_service_pb2
+import sys
+import urllib2
+
+# Prepare post data
+echo_request = echo_service_pb2.EchoRequest()
+echo_request.message = 'Hello World'
+send_data = echo_request.SerializeToString()
+
+# Prepare http request
+url = 'http://localhost:12321/sofa.pbrpc.test.EchoServer.Echo'
+accept = 'application/protobuf'
+headers = { 'Accept' : accept }
+request = urllib2.Request(url, send_data, headers)
+
+# Send request 
+try:
+    response = urllib2.urlopen(request)
+except Exception as e:
+    print "ERROR: Send fail: %s" % e.reason
+    sys.exit(1)
+
+# Read http body
+recv_data = response.read()
+
+# check failure
+if response.info().getheader('Content-Type') != accept:
+    print "ERROR: %s" % recv_data
+    sys.exit(1)
+
+# print response
+echo_response = echo_service_pb2.EchoResponse()
+echo_response.ParseFromString(recv_data)
+print "Response:\n%s" % echo_response.message
diff --git a/src/sofa/pbrpc/http_rpc_request.cc b/src/sofa/pbrpc/http_rpc_request.cc
index a361206..76bc6cc 100644
--- a/src/sofa/pbrpc/http_rpc_request.cc
+++ b/src/sofa/pbrpc/http_rpc_request.cc
@@ -123,37 +123,6 @@ void HTTPRpcRequest::ProcessRequest(
         }
     }
 
-    std::string json_str;
-    if (_type == POST)
-    {
-        json_str = _req_body->ToString();
-    }
-    else
-    {
-        json_str = _query_params["request"];
-    }
-    if (json_str.empty())
-    {
-        // if null json str, set as null object
-        json_str = "{}";
-    }
-
-    std::string err;
-    _req_json = ParseJson(json_str.c_str(), err);
-    if (_req_json == NULL)
-    {
-#if defined( LOG )
-        LOG(ERROR) << "ProcessRequest(): " << RpcEndpointToString(_remote_endpoint)
-                   << ": {" << SequenceId() << "}: parse json failed: " << err;
-#else
-        SLOG(ERROR, "ProcessRequest(): %s: {%lu}: parse json failed: %s",
-                RpcEndpointToString(_remote_endpoint).c_str(), SequenceId(), err.c_str());
-#endif
-        SendFailedResponse(server_stream,
-                RPC_ERROR_PARSE_REQUEST_MESSAGE, "parse json failed: " + err);
-        return;
-    }
-
     MethodBoard* method_board = FindMethodBoard(service_pool, service_name, method_name);
     if (method_board == NULL)
     {
@@ -173,18 +142,57 @@ void HTTPRpcRequest::ProcessRequest(
     const google::protobuf::MethodDescriptor* method_desc = method_board->Descriptor();
 
     google::protobuf::Message* request = service->GetRequestPrototype(method_desc).New();
-    if (jsonobject2pb(_req_json, request, err) < 0)
+    if (_type == POST_PB)
     {
+        bool parse_request_return = request->ParseFromZeroCopyStream(_req_body.get());
+        if (!parse_request_return)
+        {
 #if defined( LOG )
-        LOG(ERROR) << "ProcessRequest(): " << RpcEndpointToString(_remote_endpoint)
-                   << ": {" << SequenceId() << "}: parse json to pb failed: " << err;
+            LOG(ERROR) << "ProcessRequest(): " << RpcEndpointToString(_remote_endpoint)
+                       << ": {" << SequenceId() << "}: parse pb body failed";
 #else
-        SLOG(ERROR, "ProcessRequest(): %s: {%lu}: parse json to pb failed: %s",
-                RpcEndpointToString(_remote_endpoint).c_str(), SequenceId(), err.c_str());
+            SLOG(ERROR, "ProcessRequest(): %s: {%lu}: parse pb body failed",
+                    RpcEndpointToString(_remote_endpoint).c_str(), SequenceId());
 #endif
-        SendFailedResponse(server_stream,
-                RPC_ERROR_PARSE_REQUEST_MESSAGE, "parse json to pb failed: " + err);
-        return;
+            SendFailedResponse(server_stream,
+                    RPC_ERROR_PARSE_REQUEST_MESSAGE, "parse pb body failed");
+            delete request;
+            return;
+        }
+    }
+    else 
+    {
+        std::string json_str;
+        if (_type == POST)
+        {
+            json_str = _req_body->ToString();
+        }
+        else
+        {
+            json_str = _query_params["request"];
+        }
+        if (json_str.empty())
+        {
+            // if null json str, set as null object
+            json_str = "{}";
+        }
+
+        std::string err;
+        _req_json = ParseJson(json_str.c_str(), err);
+        if (_req_json == NULL || jsonobject2pb(_req_json, request, err) < 0)
+        {
+#if defined( LOG )
+            LOG(ERROR) << "ProcessRequest(): " << RpcEndpointToString(_remote_endpoint)
+                       << ": {" << SequenceId() << "}: parse json failed: " << err;
+#else
+            SLOG(ERROR, "ProcessRequest(): %s: {%lu}: parse json failed: %s",
+                    RpcEndpointToString(_remote_endpoint).c_str(), SequenceId(), err.c_str());
+#endif
+            SendFailedResponse(server_stream,
+                    RPC_ERROR_PARSE_REQUEST_MESSAGE, "parse json failed: " + err);
+            delete request;
+            return;
+        }
     }
 
     google::protobuf::Message* response = service->GetResponsePrototype(method_desc).New();
@@ -208,14 +216,24 @@ ReadBufferPtr HTTPRpcRequest::AssembleSucceedResponse(
         const google::protobuf::Message* response,
         std::string& err)
 {
-    std::string json_str;
-    pb2json(response, json_str);
-
     WriteBuffer write_buffer;
-    if (!RenderJsonResponse(&write_buffer, json_str))
+    if (_type == POST_PB)
     {
-        err = "render json response failed";
-        return ReadBufferPtr();
+        if (!RenderResponse(&write_buffer, PROTOBUF, response->SerializeAsString()))
+        {
+            err = "render protobuf response failed";
+            return ReadBufferPtr();
+        }
+    }
+    else
+    {
+        std::string json_str;
+        pb2json(response, json_str);
+        if (!RenderResponse(&write_buffer, JSON, json_str))
+        {
+            err = "render json response failed";
+            return ReadBufferPtr();
+        }
     }
 
     ReadBufferPtr read_buffer(new ReadBuffer());
@@ -233,7 +251,7 @@ ReadBufferPtr HTTPRpcRequest::AssembleFailedResponse(
         << StringUtils::replace_all(reason, "\"", "\\\"") << "\"";
 
     WriteBuffer write_buffer;
-    if (!RenderJsonResponse(&write_buffer, oss.str()))
+    if (!RenderResponse(&write_buffer, JSON, oss.str()))
     {
         err = "render json response failed";
         return ReadBufferPtr();
@@ -385,7 +403,7 @@ void HTTPRpcRequest::SendPage(
         const std::string& page)
 {
     WriteBuffer write_buffer;
-    if (!RenderHtmlResponse(&write_buffer, page))
+    if (!RenderResponse(&write_buffer, HTML, page))
     {
 #if defined( LOG )
         LOG(ERROR) << "SendPage(): " << RpcEndpointToString(_remote_endpoint)
@@ -415,35 +433,33 @@ void HTTPRpcRequest::SendError(
     SendPage(server_stream, oss.str());
 }
 
-bool HTTPRpcRequest::RenderJsonResponse(
+bool HTTPRpcRequest::RenderResponse(
         google::protobuf::io::ZeroCopyOutputStream* output,
-        const std::string& json)
+        const RenderType type,
+        const std::string& body)
 {
     std::ostringstream oss;
-    oss << json.size();
+    oss << body.size();
     google::protobuf::io::Printer printer(output, '$');
     printer.Print("HTTP/1.1 200 OK\r\n");
-    printer.Print("Content-Type: application/json\r\n");
-    printer.Print("Access-Control-Allow-Origin: *\r\n");
-    printer.Print("Content-Length: $LENGTH$\r\n", "LENGTH", oss.str());
-    printer.Print("\r\n");
-    printer.PrintRaw(json);
-    return !printer.failed();
-}
-
-bool HTTPRpcRequest::RenderHtmlResponse(
-        google::protobuf::io::ZeroCopyOutputStream* output,
-        const std::string& html)
-{
-    std::ostringstream oss;
-    oss << html.size();
-    google::protobuf::io::Printer printer(output, '$');
-    printer.Print("HTTP/1.1 200 OK\r\n");
-    printer.Print("Content-Type: text/html; charset=UTF-8\r\n");
+    switch (type)
+    {
+        case JSON:
+            printer.Print("Content-Type: application/json\r\n");
+            break;
+        case PROTOBUF:
+            printer.Print("Content-Type: application/protobuf\r\n");
+            break;
+        case HTML:
+            printer.Print("Content-Type: text/html; charset=UTF-8\r\n");
+            break;
+        default:
+            break;
+    }
     printer.Print("Access-Control-Allow-Origin: *\r\n");
     printer.Print("Content-Length: $LENGTH$\r\n", "LENGTH", oss.str());
     printer.Print("\r\n");
-    printer.PrintRaw(html);
+    printer.PrintRaw(body);
     return !printer.failed();
 }
 
diff --git a/src/sofa/pbrpc/http_rpc_request.h b/src/sofa/pbrpc/http_rpc_request.h
index f014752..12b9fb6 100644
--- a/src/sofa/pbrpc/http_rpc_request.h
+++ b/src/sofa/pbrpc/http_rpc_request.h
@@ -47,6 +47,14 @@ class HTTPRpcRequest : public RpcRequest
             const std::string& reason,
             std::string& err);
 
+private:
+    enum RenderType
+    {
+        JSON = 1,
+        PROTOBUF = 2,
+        HTML = 3
+    };
+
 private:
     // Parse http path.
     // @return false if parse failed.
@@ -64,13 +72,10 @@ class HTTPRpcRequest : public RpcRequest
             const RpcServerStreamWPtr& server_stream,
             const std::string& error);
 
-    static bool RenderJsonResponse(
-            google::protobuf::io::ZeroCopyOutputStream* output,
-            const std::string& json);
-
-    static bool RenderHtmlResponse(
+    static bool RenderResponse(
             google::protobuf::io::ZeroCopyOutputStream* output,
-            const std::string& html);
+            const RenderType type,
+            const std::string& body);
 
     static rapidjson::Document* ParseJson(
             const char* str,
@@ -106,7 +111,8 @@ class HTTPRpcRequest : public RpcRequest
     enum Type
     {
         GET = 0,
-        POST = 1
+        POST = 1,
+        POST_PB = 2
     };
     Type                               _type;
     std::string                        _path;
diff --git a/src/sofa/pbrpc/http_rpc_request_parser.cc b/src/sofa/pbrpc/http_rpc_request_parser.cc
index d9fb4b2..c6e9847 100644
--- a/src/sofa/pbrpc/http_rpc_request_parser.cc
+++ b/src/sofa/pbrpc/http_rpc_request_parser.cc
@@ -9,6 +9,10 @@
 namespace sofa {
 namespace pbrpc {
 
+const std::string HTTPRpcRequestParser::CONTENT_LENGTH = "Content-Length";
+const std::string HTTPRpcRequestParser::ACCEPT = "Accept";
+const std::string HTTPRpcRequestParser::ACCEPT_PROTOBUF = "application/protobuf";
+
 HTTPRpcRequestParser::HTTPRpcRequestParser() :
     _state(PS_METHOD),
     _content_length(0),
@@ -199,7 +203,7 @@ int HTTPRpcRequestParser::ParseInternal(char c, std::string& err)
         if (c == '\n')
         {
             std::map<std::string, std::string>::const_iterator it =
-                _req->_headers.find("Content-Length");
+                _req->_headers.find(CONTENT_LENGTH);
             if (it != _req->_headers.end())
             {
                 char* endptr = NULL;
@@ -210,6 +214,16 @@ int HTTPRpcRequestParser::ParseInternal(char c, std::string& err)
                     return -1;
                 }
             }
+
+            it = _req->_headers.find(ACCEPT);
+            if (it != _req->_headers.end())
+            {
+                if (it->second == ACCEPT_PROTOBUF)
+                {
+                    _req->_type = HTTPRpcRequest::POST_PB;
+                }
+            }
+
             _state = PS_BODY;
             return 1;
         }
diff --git a/src/sofa/pbrpc/http_rpc_request_parser.h b/src/sofa/pbrpc/http_rpc_request_parser.h
index c4aa91a..90389b4 100644
--- a/src/sofa/pbrpc/http_rpc_request_parser.h
+++ b/src/sofa/pbrpc/http_rpc_request_parser.h
@@ -56,6 +56,9 @@ class HTTPRpcRequestParser : public RpcRequestParser
     std::string _header_value; // currrent parsing header value
     int64 _content_length; // body content length
     HTTPRpcRequestPtr _req;
+    static const std::string CONTENT_LENGTH;
+    static const std::string ACCEPT;
+    static const std::string ACCEPT_PROTOBUF;
 }; // class HTTPRpcRequestParser
 
 } // namespace pbrpc
diff --git a/test/perf_test/test_delay.sh b/test/perf_test/test_delay.sh
index c1e0a12..1363df6 100755
--- a/test/perf_test/test_delay.sh
+++ b/test/perf_test/test_delay.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 #############################################
 HOST=$HOSTNAME
diff --git a/test/perf_test/test_multi_server.sh b/test/perf_test/test_multi_server.sh
index e3549b5..39090d5 100755
--- a/test/perf_test/test_multi_server.sh
+++ b/test/perf_test/test_multi_server.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 #############################################
 HOST=$HOSTNAME
diff --git a/test/perf_test/test_qps.sh b/test/perf_test/test_qps.sh
index d6a33c4..00cb674 100755
--- a/test/perf_test/test_qps.sh
+++ b/test/perf_test/test_qps.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 #############################################
 HOST=$HOSTNAME