diff --git a/app/wizard_demo/httpd_proxy/http_servlet.cpp b/app/wizard_demo/httpd_proxy/http_servlet.cpp
index 5f613a849..2fca601e0 100644
--- a/app/wizard_demo/httpd_proxy/http_servlet.cpp
+++ b/app/wizard_demo/httpd_proxy/http_servlet.cpp
@@ -1,11 +1,14 @@
 #include "stdafx.h"
 #include "tcp_transfer.h"
+#include "http_transfer.h"
 #include "http_servlet.h"
 
-http_servlet::http_servlet(acl::socket_stream* stream, acl::session* session)
+http_servlet::http_servlet(acl::socket_stream* stream, acl::session* session,
+	int port /* 80 */)
 : acl::HttpServlet(stream, session)
+, port_(port)
 {
-	handlers_["/hello"] = &http_servlet::onHello;
+	handlers_["/hello"] = &http_servlet::on_hello;
 }
 
 http_servlet::~http_servlet(void)
@@ -39,17 +42,19 @@ bool http_servlet::doOther(request_t&, response_t& res, const char* method)
 
 bool http_servlet::doGet(request_t& req, response_t& res)
 {
-	return doPost(req, res);
+	const char* path = req.getPathInfo();
+	handler_t handler = path && *path ? handlers_[path] : NULL;
+	return handler ? (this->*handler)(req, res) : transfer_get(req, res);
 }
 
 bool http_servlet::doPost(request_t& req, response_t& res)
 {
 	const char* path = req.getPathInfo();
 	handler_t handler = path && *path ? handlers_[path] : NULL;
-	return handler ? (this->*handler)(req, res) : onDefault(req, res);
+	return handler ? (this->*handler)(req, res) : transfer_post(req, res);
 }
 
-bool http_servlet::onHello(request_t& req, response_t& res)
+bool http_servlet::on_hello(request_t& req, response_t& res)
 {
 	res.setContentType("text/html; charset=utf-8")	// 设置响应字符集
 		.setKeepAlive(req.isKeepAlive())	// 设置是否保持长连接
@@ -89,30 +94,26 @@ bool http_servlet::onHello(request_t& req, response_t& res)
 	return res.write(buf) && res.write(NULL, 0);
 }
 
-bool http_servlet::onDefault(request_t& req, response_t& res)
+bool http_servlet::transfer_get(request_t& req, response_t& res)
 {
-	const char* host = req.getRemoteHost();
-	if (host == NULL || *host == 0) {
-		logger_error("no Host in request head");
-		return false;
-	}
+	http_transfer fiber_peer(acl::HTTP_METHOD_GET, req, res, port_);
+	fiber_peer.start();
 
-	acl::string buf(host);
-	char* port = strrchr(buf.c_str(), ':');
-	if (port == NULL || *(port + 1) == 0) {
-		port = "80";
-	} else {
-		*port++ = 0;
-	}
+	bool keep_alive;
+	fiber_peer.wait(&keep_alive);
+	return keep_alive && req.isKeepAlive();
+}
 
-	acl::string peer_addr;
-	peer_addr.format("%s|%s", buf.c_str(), port);
-	acl::socket_stream peer;
-	if (!peer.open(buf.c_str(), 0, 0)) {
-		logger_error("connect %s error %s", buf.c_str(), acl::last_serror());
-		return false;
-	}
-	return true;
+bool http_servlet::transfer_post(request_t& req, response_t& res)
+{
+	http_transfer fiber_peer(acl::HTTP_METHOD_POST, req, res, port_);
+	fiber_peer.start();
+
+	bool keep_alive;
+	fiber_peer.wait(&keep_alive);
+
+	printf("transfer_post finished\r\n");
+	return keep_alive && req.isKeepAlive();
 }
 
 bool http_servlet::doConnect(request_t& req, response_t& res)
@@ -144,11 +145,11 @@ bool http_servlet::doConnect(request_t& req, response_t& res)
 	}
 
 	acl::socket_stream& local = req.getSocketStream();
-	doTcpProxy(local, peer);
+	transfer_tcp(local, peer);
 	return false;
 }
 
-bool http_servlet::doTcpProxy(acl::socket_stream& local, acl::socket_stream& peer)
+bool http_servlet::transfer_tcp(acl::socket_stream& local, acl::socket_stream& peer)
 {
 	tcp_transfer fiber_local(local, peer);
 	tcp_transfer fiber_peer(peer, local);
@@ -162,7 +163,7 @@ bool http_servlet::doTcpProxy(acl::socket_stream& local, acl::socket_stream& pee
 	fiber_local.wait();
 	fiber_peer.wait();
 
-	printf("doProxy finished, local fd=%d, peer fd=%d\r\n",
+	printf("transfer_tcp finished, local fd=%d, peer fd=%d\r\n",
 		fiber_local.get_input().sock_handle(),
 		fiber_local.get_output().sock_handle());
 	return true;
diff --git a/app/wizard_demo/httpd_proxy/http_servlet.h b/app/wizard_demo/httpd_proxy/http_servlet.h
index 52145f1f7..e1ba7f7de 100644
--- a/app/wizard_demo/httpd_proxy/http_servlet.h
+++ b/app/wizard_demo/httpd_proxy/http_servlet.h
@@ -3,7 +3,7 @@
 class http_servlet : public acl::HttpServlet
 {
 public:
-	http_servlet(acl::socket_stream*, acl::session*);
+	http_servlet(acl::socket_stream*, acl::session*, int port = 80);
 	~http_servlet();
 
 protected:
@@ -22,11 +22,13 @@ protected:
 	bool doConnect(request_t&, response_t&);
 
 private:
+	int port_;
 	typedef bool (http_servlet::*handler_t)(request_t&,response_t&);
 	std::map<std::string, handler_t> handlers_;
 
-	bool onDefault(request_t&, response_t&);
-	bool onHello(request_t&, response_t&);
+	bool on_hello(request_t&, response_t&);
+	bool transfer_get(request_t&, response_t&);
+	bool transfer_post(request_t&, response_t&);
 
-	bool doTcpProxy(acl::socket_stream& local, acl::socket_stream& peer);
+	bool transfer_tcp(acl::socket_stream& local, acl::socket_stream& peer);
 };
diff --git a/app/wizard_demo/httpd_proxy/http_transfer.cpp b/app/wizard_demo/httpd_proxy/http_transfer.cpp
index 99789e909..f767e7aef 100644
--- a/app/wizard_demo/httpd_proxy/http_transfer.cpp
+++ b/app/wizard_demo/httpd_proxy/http_transfer.cpp
@@ -1,27 +1,198 @@
 #include "stdafx.h"
 #include "http_transfer.h"
 
-http_transfer::http_transfer(request_t& req, response_t& res)
-: req_(req)
+http_transfer::http_transfer(acl::http_method_t method, request_t& req,
+	response_t& res, int port)
+: port_(port)
+, method_(method)
+, req_(req)
 , res_(res)
-, peer_(NULL)
+, client_(NULL)
 {}
 
-http_transfer::~http_transfer(void) {}
-
-void http_transfer::set_peer(http_transfer& peer) {
-	peer_ = &peer;
+http_transfer::~http_transfer(void) {
+	delete client_;
 }
 
-void http_transfer::wait(void) {
-	(void) box_.pop();
+void http_transfer::wait(bool* keep_alive) {
+	bool* res = box_.pop();
+	assert(res);
+	*keep_alive = *res;
+	delete res;
 }
 
 void http_transfer::run(void) {
-
-	if (peer_) {
-		peer_->kill();
+	bool* res = new bool;
+	switch (method_) {
+	case acl::HTTP_METHOD_GET:
+		*res = transfer_get();
+		break;
+	case acl::HTTP_METHOD_POST:
+		*res = transfer_post();
+		break;
+	default:
+		logger_error("not support method: %d", (int) method_);
+		*res = false;
+		break;
 	}
 
-	box_.push(NULL);
+	box_.push(res);
+}
+
+bool http_transfer::open_peer(request_t& req, acl::socket_stream& conn)
+{
+	const char* host = req.getRemoteHost();
+	if (host == NULL || *host == 0) {
+		logger_error("no Host in request head");
+		return false;
+	}
+
+	acl::string buf(host);
+
+	char* ptr = strrchr(buf.c_str(), ':');
+	if (ptr != NULL && *(ptr + 1) != 0) {
+		*ptr++ = 0;
+		int port = atoi(ptr);
+		if (port > 0 && port < 65535) {
+			port_ = port;
+		}
+	}
+
+	acl::string addr;
+	addr.format("%s|%d", buf.c_str(), port_);
+
+	if (conn.open(addr, 0, 0)) {
+		logger("connect %s ok", addr.c_str());
+		return true;
+	}
+
+	logger_error("connect %s error %s", addr.c_str(), acl::last_serror());
+	return false;
+}
+
+bool http_transfer::transfer_request_head(acl::socket_stream& conn) {
+	acl::string header;
+	req_.sprint_header(header, NULL);
+	if (header.empty()) {
+		logger_error("http request head empty");
+		return false;
+	}
+
+	header += "\r\n";
+
+	if (conn.write(header) == -1) {
+		logger_error("write request header error");
+		return false;
+	}
+
+	printf(">>>send head: [%s]\r\n", header.c_str());
+	client_ = new acl::http_client(&conn, true);
+	return true;
+}
+
+bool http_transfer::transfer_request_body(acl::socket_stream& conn) {
+	long long length = req_.getContentLength();
+	if (length <= 0) {
+		return true;
+	}
+
+	acl::istream& in = req_.getInputStream();
+	long long n = 0;
+	char buf[8192];
+
+	while (n < length) {
+		int ret = in.read(buf, sizeof(buf), false);
+		if (ret == -1) {
+			logger_error("read request body error");
+			return false;
+		}
+
+		if (conn.write(buf, ret) == -1) {
+			logger_error("send request body error");
+			return false;
+		}
+
+		n += ret;
+	}
+
+	return true;
+}
+
+bool http_transfer::transfer_get(void) {
+	if (!open_peer(req_, conn_)) {
+		logger_error("open server error");
+		return false;
+	}
+
+	if (!transfer_request_head(conn_)) {
+		logger_error("transfer_request_head error");
+		return false;
+	} else {
+		return transfer_response();
+	}
+}
+
+bool http_transfer::transfer_post(void) {
+	if (!open_peer(req_, conn_)) {
+		logger_error("open server error");
+		return false;
+	}
+
+	if (!transfer_request_head(conn_)) {
+		logger_error("transfer_request_head error");
+		return false;
+	} else if (!transfer_request_body(conn_)) {
+		logger_error("transfer_request_body error");
+		return false;
+	} else {
+		return transfer_response();
+	}
+}
+
+bool http_transfer::transfer_response(void) {
+	assert(client_);
+	if (!client_->read_head()) {
+		logger_error("read response head error");
+		return false;
+	}
+
+	acl::string header;
+	client_->sprint_header(header, NULL);
+	if (header.empty()) {
+		logger_error("response header empty");
+		return false;
+	}
+
+	header += "\r\n";
+
+	printf("response head:\r\n[%s]\r\n", header.c_str());
+
+	acl::ostream& out = res_.getOutputStream();
+	if (out.write(header) == -1) {
+		logger_error("send response head error");
+		return false;
+	}
+
+	long long length = client_->body_length();
+	if (length == 0) {
+		return client_->is_server_keep_alive();
+	}
+
+	char buf[8192];
+	while (true) {
+		int ret = client_->read_body(buf, sizeof(buf));
+		if (ret <= 0) {
+			break;
+		} else if (out.write(buf, ret) == -1) {
+			logger_error("send response body error");
+			return false;
+		}
+	}
+
+
+	if (length < 0) {
+		return false;
+	}
+
+	return client_->is_server_keep_alive();
 }
diff --git a/app/wizard_demo/httpd_proxy/http_transfer.h b/app/wizard_demo/httpd_proxy/http_transfer.h
index 364e8a9e0..fe34b3acc 100644
--- a/app/wizard_demo/httpd_proxy/http_transfer.h
+++ b/app/wizard_demo/httpd_proxy/http_transfer.h
@@ -3,20 +3,33 @@
 class http_transfer : public acl::fiber
 {
 public:
-	http_transfer(request_t& req, response_t& res);
+	http_transfer(acl::http_method_t method, request_t& req,
+		response_t& res, int port);
 	~http_transfer(void);
 
-	void set_peer(http_transfer& peer);
-	void wait(void);
+	void wait(bool* keep_alive);
 
 protected:
 	// @override
 	void run(void);
 
 private:
-	acl::fiber_tbox<int> box_;
+	acl::fiber_tbox<bool> box_;
+
+	int port_;
+	acl::http_method_t method_;
 	request_t& req_;
 	response_t& res_;
-	http_transfer* peer_;
+	acl::socket_stream conn_;
+	acl::http_client* client_;
+
+	bool open_peer(request_t& req, acl::socket_stream& conn);
+
+	bool transfer_get(void);
+	bool transfer_post(void);
+
+	bool transfer_request_head(acl::socket_stream& conn);
+	bool transfer_request_body(acl::socket_stream& conn);
+	bool transfer_response(void);
 };
 
diff --git a/lib_fiber/c/src/event/event_iocp.c b/lib_fiber/c/src/event/event_iocp.c
index 491f56ca4..b917b494d 100644
--- a/lib_fiber/c/src/event/event_iocp.c
+++ b/lib_fiber/c/src/event/event_iocp.c
@@ -396,8 +396,8 @@ static int iocp_add_write(EVENT_IOCP *ev, FILE_EVENT *fe)
 		fe->mask |= EVENT_WRITE;
 		return 0;
 	} else {
-		msg_warn("%s(%d): WriteFile error(%d, %s)",
-			__FUNCTION__, __LINE__, acl_fiber_last_error(), last_serror());
+		msg_warn("%s(%d): WriteFile error(%d, %s)", __FUNCTION__,
+			__LINE__, acl_fiber_last_error(), last_serror());
 		fe->mask |= EVENT_ERR;
 		assert(fe->writer);
 		array_append(ev->events, fe->writer);
@@ -456,7 +456,11 @@ static void iocp_event_save(EVENT_IOCP *ei, IOCP_EVENT *event,
 		fe->mask &= ~EVENT_READ;
 	} else if ((event->type & (IOCP_EVENT_WRITE | IOCP_EVENT_POLLW))) {
 		if (fe->status & STATUS_CONNECTING) {
-			// just for the calling of getpeername()
+			// Just for the calling of getpeername():
+			// If the socket is ready for connecting server, we
+			// should set SO_UPDATE_CONNECT_CONTEXT here, because
+			// the peer address wasn't associated with the socket
+			// automaticlly in IOCP mode.
 			DWORD val = 1;
 			setsockopt(fe->fd, SOL_SOCKET, SO_UPDATE_CONNECT_CONTEXT,
 				(char *)&val, sizeof(DWORD));
@@ -483,7 +487,7 @@ static int iocp_wait(EVENT *ev, int timeout)
 			(OVERLAPPED**) &event, timeout);
 
 		if (event == NULL) {
-				break;
+			break;
 		}
 
 		if (event->type & IOCP_EVENT_DEAD) {
@@ -492,6 +496,11 @@ static int iocp_wait(EVENT *ev, int timeout)
 		}
 
 		event->refer--;
+
+		// If the associated FILE_EVENT with the event has gone in
+		// iocp_close_sock(), we should check the event's refer and
+		// free it when refer is 0.
+
 		if (event->fe == NULL) {
 			if (event->refer == 0) {
 				mem_free(event);