diff --git a/APIs/extra_mime.lua b/APIs/extra_mime.lua
index 9d2376b..b30b505 100644
--- a/APIs/extra_mime.lua
+++ b/APIs/extra_mime.lua
@@ -32,7 +32,7 @@ function std.mimeOf(name)
 	end
 end
 
-function std.isBinary(name)
+--[[ function std.isBinary(name)
 	local mime = std.mime(name)
 	if mime ~= "application/octet-stream" then
 		return std.is_bin(name)
@@ -40,7 +40,7 @@ function std.isBinary(name)
 		local xmime,bin = std.extra_mime(name)
 		return bin
 	end
-end
+end ]]
 
 function std.sendFile(m)
 	local mime = std.mimeOf(m)
@@ -48,28 +48,24 @@ function std.sendFile(m)
 	local len = tostring(math.floor(finfo.size))
 	local len1 = tostring(math.floor(finfo.size - 1))
 	if mime == "audio/mpeg" then
-		std.status(200, "OK")
-		std.custom_header("Pragma", "public")
-		std.custom_header("Expires", "0")
-		std.custom_header("Content-Type", mime)
-		std.custom_header("Content-Length", len)
-		std.custom_header("Content-Disposition", "inline; filename=" .. std.basename(m))
-		std.custom_header("Content-Range:", "bytes 0-" .. len1 .. "/" .. len)
-		std.custom_header("Accept-Ranges", "bytes")
-		std.custom_header("X-Pad", "avoid browser bug")
-		std.custom_header("Content-Transfer-Encoding", "binary")
-		std.custom_header("Cache-Control", "no-cache, no-store")
-		std.custom_header("Connection", "Keep-Alive")
-		std.custom_header("Etag", "a404b-c3f-47c3a14937c80")
+		std.status(200)
+		std.header("Pragma", "public")
+		std.header("Expires", "0")
+		std.header("Content-Type", mime)
+		std.header("Content-Length", len)
+		std.header("Content-Disposition", "inline; filename=" .. std.basename(m))
+		std.header("Content-Range:", "bytes 0-" .. len1 .. "/" .. len)
+		std.header("Accept-Ranges", "bytes")
+		std.header("X-Pad", "avoid browser bug")
+		std.header("Content-Transfer-Encoding", "binary")
+		std.header("Cache-Control", "no-cache, no-store")
+		std.header("Connection", "Keep-Alive")
+		std.header("Etag", "a404b-c3f-47c3a14937c80")
 	else
-		std.status(200, "OK")
-		std.custom_header("Content-Type", mime)
-		std.custom_header("Content-Length", len)
+		std.status(200)
+		std.header("Content-Type", mime)
+		std.header("Content-Length", len)
 	end
 	std.header_flush()
-	if std.is_bin(m) then
-		std.fb(m)
-	else
-		std.f(m)
-	end
+	std.f(m)
 end
diff --git a/APIs/std.lua b/APIs/std.lua
index f70dc69..ff95d15 100644
--- a/APIs/std.lua
+++ b/APIs/std.lua
@@ -1,73 +1,103 @@
 std = modules.std()
 bytes = modules.bytes()
 array = modules.array()
-function std.html()
-	std._html(HTTP_REQUEST.id)
-end
-function std.text()
-	std._text(HTTP_REQUEST.id)
-end
-function std.status(code, msg)
-	std._status(HTTP_REQUEST.id, code, msg)
+RESPONSE_HEADER = {
+	status = 200,
+	header = {},
+	cookie = {},
+	sent = false
+}
+
+function std.status(code)
+	RESPONSE_HEADER.status=code
 end
 function std.custom_header(k,v)
-	--print(k..":"..v)
-	std.t(k..": "..v)
+	std.header(k,v)
 end
 function std.header_flush()
-	std.t("")
+	std._send_header(HTTP_REQUEST.id,RESPONSE_HEADER.status, RESPONSE_HEADER.header, RESPONSE_HEADER.cookie)
+	RESPONSE_HEADER.sent = true
 end
---_redirect
-function std.redirect(s)
-	std._redirect(HTTP_REQUEST.id,s)
+
+function std.header(k,v)
+	RESPONSE_HEADER.header[k] = v
 end
-function std.json()
-	std._json(HTTP_REQUEST.id)
+
+function std.cjson(ck)
+	for k,v in pairs(ck) do
+		std.setCookie(k.."="..v.."; Path=/")
+	end
+	std.header("Content-Type","application/json")
+	std.header_flush()
 end
-function std.jpeg()
-	std._jpeg(HTTP_REQUEST.id)
-end
-function std.header(s)
-	std._header(HTTP_REQUEST.id,s)
-end
-function std.octstream(s)
-	std._octstream(HTTP_REQUEST.id,s)
-end
-function std.textstream()
-	std._textstream(HTTP_REQUEST.id)
-end
-function std.ti(v)
-	std._ti(HTTP_REQUEST.id,v)
+function std.chtml(ck)
+	for k,v in pairs(ck) do
+		std.setCookie(k.."="..v.."; Path=/")
+	end
+	std.header("Content-Type","text/html")
+	std.header_flush()
 end
 function std.t(s)
+	if RESPONSE_HEADER.sent == false then
+		std.header_flush()
+	end
 	std._t(HTTP_REQUEST.id,s)
 end
+function std.b(s)
+	if RESPONSE_HEADER.sent == false then
+		std.header_flush()
+	end
+	std._b(HTTP_REQUEST.id,s)
+end
 function std.f(v)
 	std._f(HTTP_REQUEST.id,v)
 end
-function std.fb(v)
-	std._f(HTTP_REQUEST.id,v)
+
+function std.setCookie(v)
+	RESPONSE_HEADER.cookie[#RESPONSE_HEADER.cookie] = v
 end
-function std.setCookie(t,v,p)
-	p = p or ""
-	std._setCookie(HTTP_REQUEST.id,t,v,p)
-end
-function std.cjson(v, p)
-	
-	std.setCookie("application/json; charset=utf-8",v)
-end
-function std.chtml(v)
-	std.setCookie("text/html; charset=utf-8",v)
-end
-function std.ctext(v)
-	std.setCookie("text/plain; charset=utf-8",v)
+
+function std.error(status, msg)
+	std._error(HTTP_REQUEST.id, status, msg)
 end
 --_upload
 --_route
 function std.unknow(s)
-	std._unknow(HTTP_REQUEST.id,s)
+	std.error(404, "Unknown request")
 end
 
+--_redirect
+--[[ function std.redirect(s)
+	std._redirect(HTTP_REQUEST.id,s)
+end ]]
+
+function std.html()
+	std.header("Content-Type","text/html")
+	std.header_flush()
+end
+function std.text()
+	std.header("Content-Type","text/plain")
+	std.header_flush()
+end
+
+function std.json()
+	std.header("Content-Type","application/json")
+	std.header_flush()
+end
+function std.jpeg()
+	std.header("Content-Type","image/jpeg")
+	std.header_flush()
+end
+function std.octstream(s)
+	std.header("Content-Type","application/octet-stream")
+	std.header("Content-Disposition",'attachment; filename="'..s..'"')
+	std.header_flush()
+end
+--[[ function std.textstream()
+	std._textstream(HTTP_REQUEST.id)
+end ]]
+
+
 function std.readOnly(t) -- bugging
     local proxy = {}
     local mt = {       -- create metatable
diff --git a/APIs/web.lua b/APIs/web.lua
index b5dba59..3f32633 100644
--- a/APIs/web.lua
+++ b/APIs/web.lua
@@ -5,7 +5,7 @@ local wurl = require("wurl")
 
 local web = {}
 
-web.undestand = function(proto)
+web.understand = function(proto)
 	if proto == "http" or proto == "https" then 
 		return true 
 	else 
@@ -15,7 +15,7 @@ end
 
 web.get = function(url)
 	local obj = utils.url_parser(url)
-	if web.undestand(obj.protocol) then
+	if web.understand(obj.protocol) then
 		return wurl._get(obj.hostname,obj.port, obj.query)
 	else
 		return nil,"Protocol is unsupported: "..obj.protocol
@@ -25,7 +25,7 @@ end
 
 web.post = function(url,data)
 	local obj = utils.url_parser(url)
-	if web.undestand(obj.protocol) then
+	if web.understand(obj.protocol) then
 		if type(data) == "string" then
 			return wurl._post(obj.hostname,
 					obj.port,
@@ -44,7 +44,7 @@ end
 
 web.download = function(url,to)
 	local obj = utils.url_parser(url)
-	if web.undestand(obj.protocol) then
+	if web.understand(obj.protocol) then
 		local file
 		if std.is_dir(to) then
 			-- need to find file name here
@@ -64,7 +64,7 @@ end
 
 web.upload = function(url,name,file)
 	local obj = utils.url_parser(url)
-	if web.undestand(obj.protocol) then
+	if web.understand(obj.protocol) then
 		return wurl._upload(obj.hostname,obj.port,obj.query,name,file)
 	else
 		return nil,"Protocol is unsupported: "..obj.protocol
diff --git a/dist/lua-0.5.2b.tar.gz b/dist/lua-0.5.2b.tar.gz
index 73e5520..50ea2db 100644
Binary files a/dist/lua-0.5.2b.tar.gz and b/dist/lua-0.5.2b.tar.gz differ
diff --git a/lib/wurl/wurl.c b/lib/wurl/wurl.c
index 1b6c80d..7f84890 100644
--- a/lib/wurl/wurl.c
+++ b/lib/wurl/wurl.c
@@ -16,6 +16,7 @@
 #include <libgen.h>
 
 #include "../lualib.h"
+#include "../../lua-api.h"
 #include <antd/utils.h>
 	
 #define CLIENT_NAME "wurl"
@@ -475,26 +476,22 @@ static int l_get(lua_State *L)
 	if(wurl_request(host,port,&rq,1) == 0)
 	{
 		//printf("Content type is %s\n", rq.ctype);
-		mime_t m = mime_from_type(rq.ctype);
+		//mime_t m = mime_from_type(rq.ctype);
 		lua_newtable(L);
 		lua_pushstring(L,"contentType");
 		lua_pushstring(L,rq.ctype);
 		lua_settable(L,-3);
 		
+		/*
 		lua_pushstring(L,"binary");
 		lua_pushboolean(L,m.bin);
-		lua_settable(L,-3);
+		lua_settable(L,-3);*/
 		
 		lua_pushstring(L,"data");
-		if(m.bin)
-		{
-			//printf("Data is binary, encode as base64 %s\n", rq.ctype);
-			char* dst = (char*) malloc(3*rq.clen/2);
-			Base64encode(dst, (const char*)rq.data,rq.clen);
-			lua_pushstring(L,dst);
-			free(dst);
-		} else
-			lua_pushstring(L,(const char*)rq.data);
+		// byte array, that can be convert to string later
+		lua_new_byte_array(L,rq.clen);
+		byte_array_t* arr = l_check_barray(L,-1);
+		memcpy(arr->data,rq.data,rq.clen);
 		free(rq.data); // be careful
 		lua_settable(L,-3);
 		return 1;
@@ -529,20 +526,15 @@ static int l_post(lua_State *L)
 		lua_pushstring(L,rq.ctype);
 		lua_settable(L,-3);
 		
-		lua_pushstring(L,"binary");
+		/*lua_pushstring(L,"binary");
 		lua_pushboolean(L,m.bin);
 		lua_settable(L,-3);
-		
+		*/
+
 		lua_pushstring(L,"data");
-		if(m.bin)
-		{
-			//printf("Data is binary, encode as base64 %s\n", rq.ctype);
-			char* dst = (char*) malloc(3*rq.clen/2);
-			Base64encode(dst, (const char*)rq.data,rq.clen);
-			lua_pushstring(L,dst);
-			free(dst);
-		} else
-			lua_pushstring(L,(const char*)rq.data);
+		lua_new_byte_array(L,rq.clen);
+		byte_array_t* arr = l_check_barray(L,-1);
+		memcpy(arr->data,rq.data,rq.clen);
 		free(rq.data); // be careful
 		lua_settable(L,-3);
 		return 1;
diff --git a/lua-api.c b/lua-api.c
index 156ff8e..034ac5c 100644
--- a/lua-api.c
+++ b/lua-api.c
@@ -21,18 +21,18 @@ void init()
 * Plugin handler, reads request from the server and processes it
 * 
 */
-static void push_dict_to_lua(lua_State* L, dictionary d)
+static void push_dict_to_lua(lua_State* L, dictionary_t d)
 {
 	lua_newtable(L);
 	
-	association as;
+	chain_t as;
 	if(d)
 		for_each_assoc(as, d)
 		{
 			lua_pushstring(L,as->key);
 			//printf("KEY %s\n", as->key);
 			if(EQU(as->key,"COOKIE") || EQU(as->key,"REQUEST_HEADER") || EQU(as->key,"REQUEST_DATA") )
-				push_dict_to_lua(L, (dictionary)as->value);
+				push_dict_to_lua(L, (dictionary_t)as->value);
 			else
 			{
 				lua_pushstring(L,as->value);
diff --git a/plugin-wrapper.c b/plugin-wrapper.c
index 8c5511e..ee9ffe0 100644
--- a/plugin-wrapper.c
+++ b/plugin-wrapper.c
@@ -2,64 +2,74 @@
 #include "lua-api.h"
 
 //void header(int,const char*);
+/*
 static int l_header (lua_State *L) {
 	//int client = (int)luaL_checknumber(L, 1);
 	void* client = lua_touserdata (L, 1);
 	const char* s = luaL_checkstring(L,2);
 	ctype(client,s);
-	return 0;  /* number of results */
+	return 0;  
 }
+*/
 
 //void redirect(int,const char*);
+/*
 static int l_redirect (lua_State *L) {
 	void* client = lua_touserdata (L, 1);
 	const char* s = luaL_checkstring(L,2);
 	redirect(client,s);
-	return 0;  /* number of results */
-}
+	return 0; 
+}*/
 
-//void html(int);
+/*
 static int l_html (lua_State *L) {
 	void* client = lua_touserdata (L, 1);
 	html(client);
-	return 0;  /* number of results */
+	return 0;  
 }
+*/
 
 //void text(int);
+/*
 static int l_text (lua_State *L) {
 	void* client = lua_touserdata (L, 1);
 	text(client);
-	return 0;  /* number of results */
+	return 0;  
 }
+*/
 
 //void json(int);
+/*
 static int l_json (lua_State *L) {
 	void* client = lua_touserdata (L, 1);
 	json(client);
-	return 0;  /* number of results */
-}
+	return 0;  
+}*/
 
 //void jpeg(int);
+/*
 static int l_jpeg (lua_State *L) {
 	void* client = lua_touserdata (L, 1);
 	jpeg(client);
-	return 0;  /* number of results */
-}
+	return 0;  
+}*/
 
 //void octstream(int, char*);
+/*
 static int l_octstream (lua_State *L) {
 	void* client = lua_touserdata (L, 1);
 	const char* s = luaL_checkstring(L,2);
 	octstream(client,(char*)s);
-	return 0;  /* number of results */
-}
+	return 0;  
+}*/
 
 //void textstream(int);
+/*
 static int l_textstream (lua_State *L) {
 	void* client = lua_touserdata (L, 1);
 	textstream(client);
-	return 0;  /* number of results */
-}
+	return 0;  
+}*/
 // int mime
 static int l_mime(lua_State* L)
 {
@@ -77,19 +87,22 @@ static int l_ext(lua_State* L)
 		free(e);
 	return 1;
 }
+/*
 static int l_is_bin(lua_State* L)
 {
 	const char* file = luaL_checkstring(L,1);
 	lua_pushboolean(L, is_bin(file));
 	return 1;
-}
+}*/
 //int __ti(int,int);
+/*
 static int l_ti (lua_State *L) {
 	void* client = lua_touserdata (L, 1);
 	int v = (int)luaL_checknumber(L, 2);
 	lua_pushnumber(L, __ti(client,v));
-	return 1;  /* number of results */
+	return 1; 
 }
+*/
 
 //int __t(int, const char*,...);
 static int l_t (lua_State *L) {
@@ -99,9 +112,14 @@ static int l_t (lua_State *L) {
 	return 1;  /* number of results */
 }
 
+// TODO: add __b to LUA
 //int __b(int, const unsigned char*, int);
-//static int l_b (lua_State *L) {
-//}
+static int l_b (lua_State *L) {
+	void * client = lua_touserdata(L,1);
+	byte_array_t * arr = l_check_barray(L,2);
+	lua_pushnumber(L, __b(client, arr->data,arr->size));
+	return 1;
+}
 
 //int __f(int, const char*);
 static int l_f (lua_State *L) {
@@ -135,31 +153,33 @@ static int l_route (lua_State *L) {
 }
 
 //char* htdocs(const char*);
-#ifdef USE_DB
+//#ifdef USE_DB
 //sqldb getdb();
-#endif
+//#endif
 //void set_cookie(int,dictionary);
 
 //void unknow(int);
+/*
 static int l_unknow (lua_State *L) {
 	void* client = lua_touserdata (L, 1);
 	unknow(client);
 	return 0;
 }
+*/
 
 static int l_log(lua_State *L)
 {
 	const char* s = luaL_checkstring(L,1);
-	LOG("%s",s);
+	server_log("%s",s);
 	return 0;
 }
 
-dictionary iterate_lua_table(lua_State *L, int index)
+dictionary_t iterate_lua_table(lua_State *L, int index)
 {
     // Push another reference to the table on top of the stack (so we know
     // where it is, and this function can work for negative, positive and
     // pseudo indices
-	dictionary dic = dict();
+	dictionary_t dic = dict();
     lua_pushvalue(L, index);
     // stack now contains: -1 => table
     lua_pushnil(L);
@@ -175,7 +195,7 @@ dictionary iterate_lua_table(lua_State *L, int index)
         {
 			// the element is a table
 			// create new dictionary
-			dictionary cdic = iterate_lua_table(L,-2);
+			dictionary_t cdic = iterate_lua_table(L,-2);
 			dput(dic,key, cdic);
 		}
 		else
@@ -198,11 +218,12 @@ dictionary iterate_lua_table(lua_State *L, int index)
 	return dic;
 }
 
+/*
 static int l_set_cookie(lua_State* L)
 {
 	if (lua_istable(L, 3))
 	{
-		dictionary d = iterate_lua_table(L,-2);
+		dictionary_t d = iterate_lua_table(L,-2);
 		if(d)
 		{
 			void* client = lua_touserdata (L, 1);
@@ -213,7 +234,8 @@ static int l_set_cookie(lua_State* L)
 		}
 	}
 	return 0;
-}
+}*/
+
 static int l_simple_hash(lua_State* L)
 {
 	const char* s = luaL_checkstring(L,1);
@@ -351,7 +373,7 @@ static int l_ws_read_header(lua_State *L)
 		 lua_pushnil(L);
 		 return 1;
 	 }
-	 dictionary dic = iterate_lua_table(L,2);
+	 dictionary_t dic = iterate_lua_table(L,2);
 	 if(dic)
 	 {
 		 // convert dictionary to header
@@ -360,7 +382,7 @@ static int l_ws_read_header(lua_State *L)
 		 header->opcode = (uint8_t)(R_INT(dic,"opcode"));
 		 header->mask = 1;
 		 header->plen = R_INT(dic,"plen");
-		 dictionary d1 = (dictionary)dvalue(dic,"mask_key");
+		 dictionary_t d1 = (dictionary_t)dvalue(dic,"mask_key");
 		 if(d1)
 		 {
 			 header->mask_key[0] = (uint8_t)(R_INT(d1,"0"));
@@ -430,14 +452,15 @@ static int l_ws_t(lua_State*L)
 	ws_t(client,str);
 	return 1;
 }
-static int l_status(lua_State*L)
+/*static int l_status(lua_State*L)
 {
 	void* client = lua_touserdata (L, 1);
 	int code = (int) luaL_checknumber(L,2);
 	const char* msg = luaL_checkstring(L,3);
 	set_status(client,code,msg);
 	return 1;
-}
+}*/
+
 /*
  * send a file as binary data
  */
@@ -482,31 +505,73 @@ static int l_status(lua_State*L)
 	 return 1;
  }
 
+static int l_std_error(lua_State* L)
+{
+	void* client = lua_touserdata (L, 1);
+	int status = luaL_checknumber(L,2);
+	const char* msg = luaL_checkstring(L,3);
+	antd_error(client, status, msg);
+	return 1;
+}
+static int l_send_header(lua_State* L)
+{
+	if (lua_istable(L, 3))
+	{
+		dictionary_t d = iterate_lua_table(L,-2);
+		if(d)
+		{
+			void* client = lua_touserdata (L, 1);
+			int status = luaL_checknumber(L,2);
+			antd_response_header_t h;
+			h.status = status;
+			h.header = d;
+			dictionary_t c = iterate_lua_table(L,-1);
+			h.cookie = NULL;
+			if(c)
+			{
+				h.cookie = list_init();
+				if(h.cookie)
+				{
+					chain_t it;
+					for_each_assoc(it,c)
+					{
+						list_put_s(&h.cookie,strdup(it->value));
+					}
+				}
+				freedict(c);
+			}
+			antd_send_header(client, &h);
+		}
+	}
+	return 1;
+}
 
 static const struct luaL_Reg standard [] = {
-       {"_header", l_header},
-	   {"_redirect", l_redirect},
-	   {"_html", l_html},
-	   {"_text", l_text},
-	   {"_json", l_json},
-	   {"_jpeg", l_jpeg},
+       //{"_header", l_header},
+	   //{"_redirect", l_redirect},
+	   //{"_html", l_html},
+	   //{"_text", l_text},
+	   //{"_json", l_json},
+	   //{"_jpeg", l_jpeg},
+	   {"_error", l_std_error},
+	   {"_send_header", l_send_header},
 	   {"b64encode", l_base64_encode},
 	   {"b64decode", l_base64_decode},
-	   {"_octstream", l_octstream} ,
-	   {"_textstream", l_textstream} ,
-	   {"_ti", l_ti} ,
+	   //{"_octstream", l_octstream} ,
+	   //{"_textstream", l_textstream} ,
+	   //{"_ti", l_ti} ,
 	   {"_t", l_t} ,
 	   {"_f", l_f} ,
-	   //{"_fb", l_fb} ,
+	   {"_b", l_b} ,
 	   {"trim", l_trim},
 	   {"upload", l_upload} ,
 	   {"route", l_route} ,
 	   {"mime", l_mime} ,
-	   {"is_bin", l_is_bin} ,
-	   {"_unknow", l_unknow} ,
-	   {"_status", l_status},
+	   //{"is_bin", l_is_bin} ,
+	   //{"_unknow", l_unknow} ,
+	   //{"_status", l_status},
 	   {"console", l_log} ,
-	   {"_setCookie", l_set_cookie},
+	   //{"_setCookie", l_set_cookie},
 	   {"hash",l_simple_hash},
 	   {"md5",l_md5},
 	   {"sha1",l_sha1},