diff --git a/core/http_server.cpp b/core/http_server.cpp
index 7213635..f1a24a7 100644
--- a/core/http_server.cpp
+++ b/core/http_server.cpp
@@ -101,14 +101,13 @@ void HTTPServer::initialize() {
 //drogon -> void HttpAppFrameworkImpl::run()
 void HTTPServer::main_loop() {
 
-	
 	if (!getLoop()->isInLoopThread()) {
 		getLoop()->moveToCurrentThread();
 	}
 
 	LOG_TRACE << "Start to run...";
 
-/*
+	/*
 	trantor::AsyncFileLogger asyncFileLogger;
 
 	// Create dirs for cache files
@@ -131,7 +130,7 @@ void HTTPServer::main_loop() {
 	}
 	*/
 
-/*
+	/*
 	// set relaunching
 	if (relaunchOnError_) {
 #ifndef _WIN32
@@ -155,7 +154,7 @@ void HTTPServer::main_loop() {
 
 	//signal(SIGTERM, TERMFunction);
 
-/*
+	/*
 	// set logger
 	if (!logPath_.empty()) {
 #ifdef _WIN32
@@ -183,7 +182,7 @@ void HTTPServer::main_loop() {
 	}
 */
 
-/*
+	/*
 	if (relaunchOnError_) {
 		LOG_INFO << "Start child process";
 	}
@@ -193,7 +192,7 @@ void HTTPServer::main_loop() {
 
 	_running = true;
 
-/*
+	/*
 #ifndef _WIN32
 	if (!libFilePaths_.empty()) {
 		sharedLibManagerPtr_ = std::unique_ptr<SharedLibManager>(
@@ -236,7 +235,7 @@ void HTTPServer::main_loop() {
 	websockCtrlsRouterPtr_->init();
 	*/
 
-/*
+	/*
 	get_loop()->queueInLoop([this]() {
 		// Let listener event loops run when everything is ready.
 		listenerManagerPtr_->startListening();
@@ -251,6 +250,30 @@ void HTTPServer::main_loop() {
 	get_loop()->loop();
 }
 
+static void defaultHttpAsyncCallback(
+    const HttpRequestPtr &,
+    std::function<void(const HttpResponsePtr &resp)> &&callback)
+{
+   // auto resp = HttpResponse::newNotFoundResponse();
+    //resp->setCloseConnection(true);
+   // callback(resp);
+}
+
+static void defaultWebSockAsyncCallback(
+    const HttpRequestPtr &,
+    std::function<void(const HttpResponsePtr &resp)> &&callback,
+    const WebSocketConnectionPtr &)
+{
+    //auto resp = HttpResponse::newNotFoundResponse();
+    //resp->setCloseConnection(true);
+    //callback(resp);
+}
+
+static void defaultConnectionCallback(const trantor::TcpConnectionPtr &)
+{
+    return;
+}
+
 HTTPServer::HTTPServer() {
 	port = 80;
 	threads = 4;
@@ -258,28 +281,435 @@ HTTPServer::HTTPServer() {
 	_running = false;
 }
 
-HttpServer::HTTPServer(
-    EventLoop *loop,
-    const InetAddress &listenAddr,
-    const std::string &name,
-    const std::vector<std::function<HttpResponsePtr(const HttpRequestPtr &)>>
-        &syncAdvices)
+HTTPServer::HTTPServer(trantor::EventLoop *loop,
+		const trantor::InetAddress &listenAddr,
+		const std::string &name,
+		const std::vector<std::function<HttpResponsePtr(const HttpRequestPtr &)> >
+				&syncAdvices)
 #ifdef __linux__
-    : server_(loop, listenAddr, name.c_str()),
+		:
+		server_(loop, listenAddr, name.c_str()),
 #else
-    : server_(loop, listenAddr, name.c_str(), true, false),
+		:
+		server_(loop, listenAddr, name.c_str(), true, false),
 #endif
-      httpAsyncCallback_(defaultHttpAsyncCallback),
-      newWebsocketCallback_(defaultWebSockAsyncCallback),
-      connectionCallback_(defaultConnectionCallback),
-      syncAdvices_(syncAdvices)
-{
-    server_.setConnectionCallback(
-        std::bind(&HttpServer::onConnection, this, _1));
-    server_.setRecvMessageCallback(
-        std::bind(&HttpServer::onMessage, this, _1, _2));
+		httpAsyncCallback_(defaultHttpAsyncCallback),
+		newWebsocketCallback_(defaultWebSockAsyncCallback),
+		connectionCallback_(defaultConnectionCallback),
+		syncAdvices_(syncAdvices) {
+	port = 80;
+	threads = 4;
+	listenBuilder = nullptr;
+	_running = false;
+
+	server_.setConnectionCallback(std::bind(&HTTPServer::onConnection, this, _1));
+	server_.setRecvMessageCallback(std::bind(&HTTPServer::onMessage, this, _1, _2));
 }
 
 HTTPServer::~HTTPServer() {
 	delete listenBuilder;
+}
+
+
+void HTTPServer::onConnection(const trantor::TcpConnectionPtr &conn)
+{
+	/*
+    if (conn->connected())
+    {
+        auto parser = std::make_shared<HttpRequestParser>(conn);
+        parser->reset();
+        conn->setContext(parser);
+        connectionCallback_(conn);
+    }
+    else if (conn->disconnected())
+    {
+        LOG_TRACE << "conn disconnected!";
+        connectionCallback_(conn);
+        auto requestParser = conn->getContext<HttpRequestParser>();
+        if (requestParser)
+        {
+            if (requestParser->webSocketConn())
+            {
+                requestParser->webSocketConn()->onClose();
+            }
+            conn->clearContext();
+        }
+    }
+	*/
+}
+
+void HTTPServer::onMessage(const trantor::TcpConnectionPtr &conn, trantor::MsgBuffer *buf)
+{
+	/*
+    if (!conn->hasContext())
+        return;
+    auto requestParser = conn->getContext<HttpRequestParser>();
+    if (!requestParser)
+        return;
+    // With the pipelining feature or web socket, it is possible to receice
+    // multiple messages at once, so
+    // the while loop is necessary
+    if (requestParser->webSocketConn())
+    {
+        // Websocket payload
+        requestParser->webSocketConn()->onNewMessage(conn, buf);
+    }
+    else
+    {
+        auto &requests = requestParser->getRequestBuffer();
+        while (buf->readableBytes() > 0)
+        {
+            if (requestParser->isStop())
+            {
+                // The number of requests has reached the limit.
+                buf->retrieveAll();
+                return;
+            }
+            if (!requestParser->parseRequest(buf))
+            {
+                requestParser->reset();
+                conn->forceClose();
+                return;
+            }
+            if (requestParser->gotAll())
+            {
+                requestParser->requestImpl()->setPeerAddr(conn->peerAddr());
+                requestParser->requestImpl()->setLocalAddr(conn->localAddr());
+                requestParser->requestImpl()->setCreationDate(
+                    trantor::Date::date());
+                requestParser->requestImpl()->setSecure(
+                    conn->isSSLConnection());
+                if (requestParser->firstReq() &&
+                    isWebSocket(requestParser->requestImpl()))
+                {
+                    auto wsConn =
+                        std::make_shared<WebSocketConnectionImpl>(conn);
+                    newWebsocketCallback_(
+                        requestParser->requestImpl(),
+                        [conn, wsConn, requestParser](
+                            const HttpResponsePtr &resp) mutable {
+                            if (conn->connected())
+                            {
+                                if (resp->statusCode() ==
+                                    k101SwitchingProtocols)
+                                {
+                                    requestParser->setWebsockConnection(wsConn);
+                                }
+                                auto httpString =
+                                    ((HttpResponseImpl *)resp.get())
+                                        ->renderToBuffer();
+                                conn->send(httpString);
+                                COZ_PROGRESS
+                            }
+                        },
+                        wsConn);
+                }
+                else
+                    requests.push_back(requestParser->requestImpl());
+                requestParser->reset();
+            }
+            else
+            {
+                break;
+            }
+        }
+        onRequests(conn, requests, requestParser);
+        requests.clear();
+    }
+	*/
+}
+
+void HTTPServer::onRequests(
+    const trantor::TcpConnectionPtr &conn,
+    const std::vector<HttpRequestPtr> &requests,
+    const std::shared_ptr<HttpRequestParser> &requestParser)
+{
+	/*
+    if (requests.empty())
+        return;
+    if (HttpAppFrameworkImpl::instance().keepaliveRequestsNumber() > 0 &&
+        requestParser->numberOfRequestsParsed() >=
+            HttpAppFrameworkImpl::instance().keepaliveRequestsNumber())
+    {
+        requestParser->stop();
+        conn->shutdown();
+        return;
+    }
+    else if (HttpAppFrameworkImpl::instance().pipeliningRequestsNumber() > 0 &&
+             requestParser->numberOfRequestsInPipelining() + requests.size() >=
+                 HttpAppFrameworkImpl::instance().pipeliningRequestsNumber())
+    {
+        requestParser->stop();
+        conn->shutdown();
+        return;
+    }
+    if (!conn->connected())
+    {
+        return;
+    }
+    auto loopFlagPtr = std::make_shared<bool>(true);
+
+    for (auto &req : requests)
+    {
+        bool close_ = (!req->keepAlive());
+        bool isHeadMethod = (req->method() == Head);
+        if (isHeadMethod)
+        {
+            req->setMethod(Get);
+        }
+        bool syncFlag = false;
+        if (!requestParser->emptyPipelining())
+        {
+            requestParser->pushRequestToPipelining(req);
+            syncFlag = true;
+        }
+        if (!syncAdvices_.empty())
+        {
+            bool adviceFlag = false;
+            for (auto &advice : syncAdvices_)
+            {
+                auto resp = advice(req);
+                if (resp)
+                {
+                    resp->setVersion(req->getVersion());
+                    resp->setCloseConnection(close_);
+                    if (!syncFlag)
+                    {
+                        requestParser->getResponseBuffer().emplace_back(
+                            getCompressedResponse(req, resp, isHeadMethod),
+                            isHeadMethod);
+                    }
+                    else
+                    {
+                        requestParser->pushResponseToPipelining(
+                            req,
+                            getCompressedResponse(req, resp, isHeadMethod),
+                            isHeadMethod);
+                    }
+
+                    adviceFlag = true;
+                    break;
+                }
+            }
+            if (adviceFlag)
+                continue;
+        }
+        httpAsyncCallback_(
+            req,
+            [conn,
+             close_,
+             req,
+             loopFlagPtr,
+             &syncFlag,
+             isHeadMethod,
+             this,
+             requestParser](const HttpResponsePtr &response) {
+                if (!response)
+                    return;
+                if (!conn->connected())
+                    return;
+
+                response->setVersion(req->getVersion());
+                response->setCloseConnection(close_);
+                auto newResp =
+                    getCompressedResponse(req, response, isHeadMethod);
+                if (conn->getLoop()->isInLoopThread())
+                {
+                    //*
+                    // * A client that supports persistent connections MAY
+                    // * "pipeline" its requests (i.e., send multiple requests
+                    // * without waiting for each response). A server MUST send
+                    // * its responses to those requests in the same order that
+                    // * the requests were received. rfc2616-8.1.1.2
+                    // *
+                    if (!conn->connected())
+                        return;
+                    if (*loopFlagPtr)
+                    {
+                        syncFlag = true;
+                        if (requestParser->emptyPipelining())
+                        {
+                            requestParser->getResponseBuffer().emplace_back(
+                                newResp, isHeadMethod);
+                        }
+                        else
+                        {
+                            // some earlier requests are waiting for responses;
+                            requestParser->pushResponseToPipelining(
+                                req, newResp, isHeadMethod);
+                        }
+                    }
+                    else if (requestParser->getFirstRequest() == req)
+                    {
+                        requestParser->popFirstRequest();
+
+                        std::vector<std::pair<HttpResponsePtr, bool>> resps;
+                        resps.emplace_back(newResp, isHeadMethod);
+                        while (!requestParser->emptyPipelining())
+                        {
+                            auto resp = requestParser->getFirstResponse();
+                            if (resp.first)
+                            {
+                                requestParser->popFirstRequest();
+                                resps.push_back(std::move(resp));
+                            }
+                            else
+                                break;
+                        }
+                        sendResponses(conn, resps, requestParser->getBuffer());
+                    }
+                    else
+                    {
+                        // some earlier requests are waiting for responses;
+                        requestParser->pushResponseToPipelining(req,
+                                                                newResp,
+                                                                isHeadMethod);
+                    }
+                }
+                else
+                {
+                    conn->getLoop()->queueInLoop([conn,
+                                                  req,
+                                                  newResp,
+                                                  this,
+                                                  isHeadMethod,
+                                                  requestParser]() {
+                        if (conn->connected())
+                        {
+                            if (requestParser->getFirstRequest() == req)
+                            {
+                                requestParser->popFirstRequest();
+                                std::vector<std::pair<HttpResponsePtr, bool>>
+                                    resps;
+                                resps.emplace_back(newResp, isHeadMethod);
+                                while (!requestParser->emptyPipelining())
+                                {
+                                    auto resp =
+                                        requestParser->getFirstResponse();
+                                    if (resp.first)
+                                    {
+                                        requestParser->popFirstRequest();
+                                        resps.push_back(std::move(resp));
+                                    }
+                                    else
+                                        break;
+                                }
+                                sendResponses(conn,
+                                              resps,
+                                              requestParser->getBuffer());
+                            }
+                            else
+                            {
+                                // some earlier requests are waiting for
+                                // responses;
+                                requestParser->pushResponseToPipelining(
+                                    req, newResp, isHeadMethod);
+                            }
+                        }
+                    });
+                }
+            });
+        if (syncFlag == false)
+        {
+            requestParser->pushRequestToPipelining(req);
+        }
+    }
+    *loopFlagPtr = false;
+    if (conn->connected() && !requestParser->getResponseBuffer().empty())
+    {
+        sendResponses(conn,
+                      requestParser->getResponseBuffer(),
+                      requestParser->getBuffer());
+        requestParser->getResponseBuffer().clear();
+    }
+	*/
+}
+
+void HTTPServer::sendResponse(const trantor::TcpConnectionPtr &conn,
+                              const HttpResponsePtr &response,
+                              bool isHeadMethod)
+{
+	/*
+    conn->getLoop()->assertInLoopThread();
+    auto respImplPtr = static_cast<HttpResponseImpl *>(response.get());
+    if (!isHeadMethod)
+    {
+        auto httpString = respImplPtr->renderToBuffer();
+        conn->send(httpString);
+        auto &sendfileName = respImplPtr->sendfileName();
+        if (!sendfileName.empty())
+        {
+            conn->sendFile(sendfileName.c_str());
+        }
+        COZ_PROGRESS
+    }
+    else
+    {
+        auto httpString = respImplPtr->renderHeaderForHeadMethod();
+        conn->send(std::move(*httpString));
+        COZ_PROGRESS
+    }
+
+    if (response->ifCloseConnection())
+    {
+        conn->shutdown();
+        COZ_PROGRESS
+    }
+	*/
+}
+
+void HTTPServer::sendResponses(
+    const trantor::TcpConnectionPtr &conn,
+    const std::vector<std::pair<HttpResponsePtr, bool>> &responses,
+    trantor::MsgBuffer &buffer)
+{
+	/*
+    conn->getLoop()->assertInLoopThread();
+    if (responses.empty())
+        return;
+    if (responses.size() == 1)
+    {
+        sendResponse(conn, responses[0].first, responses[0].second);
+        return;
+    }
+    for (auto const &resp : responses)
+    {
+        auto respImplPtr = static_cast<HttpResponseImpl *>(resp.first.get());
+        if (!resp.second)
+        {
+            // Not HEAD method
+            respImplPtr->renderToBuffer(buffer);
+            auto &sendfileName = respImplPtr->sendfileName();
+            if (!sendfileName.empty())
+            {
+                conn->send(buffer);
+                buffer.retrieveAll();
+                conn->sendFile(sendfileName.c_str());
+                COZ_PROGRESS
+            }
+        }
+        else
+        {
+            auto httpString = respImplPtr->renderHeaderForHeadMethod();
+            buffer.append(httpString->peek(), httpString->readableBytes());
+        }
+        if (respImplPtr->ifCloseConnection())
+        {
+            if (buffer.readableBytes() > 0)
+            {
+                conn->send(buffer);
+                buffer.retrieveAll();
+                COZ_PROGRESS
+            }
+            conn->shutdown();
+            return;
+        }
+    }
+    if (conn->connected() && buffer.readableBytes() > 0)
+    {
+        conn->send(buffer);
+        COZ_PROGRESS
+    }
+    buffer.retrieveAll();
+	*/
 }
\ No newline at end of file
diff --git a/core/http_server.h b/core/http_server.h
index ac99452..13f32b9 100644
--- a/core/http_server.h
+++ b/core/http_server.h
@@ -103,7 +103,7 @@ protected:
 	HttpAsyncCallback httpAsyncCallback_;
 	WebSocketNewAsyncCallback newWebsocketCallback_;
 	trantor::ConnectionCallback connectionCallback_;
-	const std::vector<std::function<HttpResponsePtr(const HttpRequestPtr &)> > &syncAdvices_;
+	std::vector<std::function<HttpResponsePtr(const HttpRequestPtr &)> > syncAdvices_;
 	bool _running{ false };
 };
 
diff --git a/core/listener_manager.cpp b/core/listener_manager.cpp
index 8b4d53b..4895840 100644
--- a/core/listener_manager.cpp
+++ b/core/listener_manager.cpp
@@ -81,7 +81,7 @@ std::vector<trantor::EventLoop *> ListenerManager::createListeners(
 		for (auto const &listener : listeners_) {
 			auto const &ip = listener.ip_;
 			bool isIpv6 = ip.find(':') == std::string::npos ? false : true;
-			std::shared_ptr<HttpServer> serverPtr;
+			std::shared_ptr<HTTPServer> serverPtr;
 			if (i == 0) {
 				DrogonFileLocker lock;
 				// Check whether the port is in use.
@@ -90,13 +90,13 @@ std::vector<trantor::EventLoop *> ListenerManager::createListeners(
 						"drogonPortTest",
 						true,
 						false);
-				serverPtr = std::make_shared<HttpServer>(
+				serverPtr = std::make_shared<HTTPServer>(
 						loopThreadPtr->getLoop(),
 						InetAddress(ip, listener.port_, isIpv6),
 						"drogon",
 						syncAdvices);
 			} else {
-				serverPtr = std::make_shared<HttpServer>(
+				serverPtr = std::make_shared<HTTPServer>(
 						loopThreadPtr->getLoop(),
 						InetAddress(ip, listener.port_, isIpv6),
 						"drogon",
@@ -140,7 +140,7 @@ std::vector<trantor::EventLoop *> ListenerManager::createListeners(
 		LOG_TRACE << "thread num=" << threadNum;
 		auto ip = listener.ip_;
 		bool isIpv6 = ip.find(':') == std::string::npos ? false : true;
-		auto serverPtr = std::make_shared<HttpServer>(
+		auto serverPtr = std::make_shared<HTTPServer>(
 				loopThreadPtr->getLoop(),
 				InetAddress(ip, listener.port_, isIpv6),
 				"drogon",
diff --git a/core/listener_manager.h b/core/listener_manager.h
index 8943b3a..da9029a 100644
--- a/core/listener_manager.h
+++ b/core/listener_manager.h
@@ -23,7 +23,7 @@
 
 #include "core/http_server_callbacks.h"
 
-class HttpServer;
+class HTTPServer;
 
 namespace drogon {
 class ListenerManager : public trantor::NonCopyable {
@@ -74,7 +74,7 @@ private:
 	};
 
 	std::vector<ListenerInfo> listeners_;
-	std::vector<std::shared_ptr<HttpServer> > servers_;
+	std::vector<std::shared_ptr<HTTPServer> > servers_;
 	std::vector<std::shared_ptr<trantor::EventLoopThread> > listeningloopThreads_;
 	std::shared_ptr<trantor::EventLoopThreadPool> ioLoopThreadPoolPtr_;
 };
diff --git a/libs/trantor/trantor/net/TcpServer.cc b/libs/trantor/trantor/net/TcpServer.cc
index 523301c..d866e14 100644
--- a/libs/trantor/trantor/net/TcpServer.cc
+++ b/libs/trantor/trantor/net/TcpServer.cc
@@ -39,6 +39,8 @@ TcpServer::TcpServer(EventLoop *loop,
         std::bind(&TcpServer::newConnection, this, _1, _2));
 }
 
+TcpServer::TcpServer() {}
+
 TcpServer::~TcpServer()
 {
     // loop_->assertInLoopThread();
diff --git a/libs/trantor/trantor/net/TcpServer.h b/libs/trantor/trantor/net/TcpServer.h
index c82808e..bd38d1c 100644
--- a/libs/trantor/trantor/net/TcpServer.h
+++ b/libs/trantor/trantor/net/TcpServer.h
@@ -50,7 +50,7 @@ class TcpServer : NonCopyable
               const std::string &name,
               bool reUseAddr = true,
               bool reUsePort = true);
-    TcpServer() {}
+    TcpServer();
     ~TcpServer();
 
     /**