diff --git a/README.md b/README.md
index 77805e4..4efae97 100755
--- a/README.md
+++ b/README.md
@@ -424,3 +424,27 @@ async with db.sqlorContext('dbname') as sor:
 
 ### classes
 * ArgsConvert
+
+## Change logs
+
+### 1.0.8
+#### server_error(errcode)
+add a new global function named "server_error(errcode)", it will raise a HTTPException, errcode should be one of:
+* 400	aiohttp.web.HTTPBadRequest	错误请求
+* 401	aiohttp.web.HTTPUnauthorized	未认证
+* 403	aiohttp.web.HTTPForbidden	禁止访问
+* 404	aiohttp.web.HTTPNotFound	未找到
+* 405	aiohttp.web.HTTPMethodNotAllowed	方法不允许
+* 408	aiohttp.web.HTTPRequestTimeout	请求超时
+* 409	aiohttp.web.HTTPConflict	冲突
+* 410	aiohttp.web.HTTPGone	已删除
+* 415	aiohttp.web.HTTPUnsupportedMediaType	不支持的媒体类型
+* 429	aiohttp.web.HTTPTooManyRequests	请求过多
+* 500	aiohttp.web.HTTPInternalServerError	服务器错误
+* 502	aiohttp.web.HTTPBadGateway	错误网关
+* 503	aiohttp.web.HTTPServiceUnavailable	服务不可用
+
+else it will raise HTTPException exception
+#### request._run_ns
+global environment now can access from request._run_ns, it contains all the globals variable in ServerEnv and related variables of request 
+
diff --git a/ahserver/baseProcessor.py b/ahserver/baseProcessor.py
index a34b2e0..486f874 100644
--- a/ahserver/baseProcessor.py
+++ b/ahserver/baseProcessor.py
@@ -80,6 +80,8 @@ class BaseProcessor:
 		self.run_ns['ref_real_path'] = self.real_path
 		self.run_ns['processor'] = self
 		self.env_set = True
+		request['run_ns'] = self.run_ns
+		request._run_ns = self.run_ns
 
 	async def execute(self,request):
 		await self.set_run_env(request)
diff --git a/ahserver/globalEnv.py b/ahserver/globalEnv.py
index 6567ff0..07b1904 100644
--- a/ahserver/globalEnv.py
+++ b/ahserver/globalEnv.py
@@ -7,8 +7,25 @@ from urllib.parse import quote
 import json
 import asyncio
 from aiohttp import BasicAuth
+from aiohttp.web import (
+	HTTPException,
+	HTTPBadRequest,
+	HTTPUnauthorized,
+	HTTPForbidden,
+	HTTPNotFound,
+	HTTPMethodNotAllowed,
+	HTTPRequestTimeout,
+	HTTPConflict,
+	HTTPGone,
+	HTTPUnsupportedMediaType,
+	HTTPTooManyRequests,
+	HTTPInternalServerError,
+	HTTPBadGateway,
+	HTTPServiceUnavailable
+	)
 from traceback import format_exc
 from functools import partial
+from aiohttp_session import get_session
 
 import random
 import time
@@ -46,6 +63,25 @@ from .filedownload import path_download, file_download
 from .filestorage import FileStorage
 from .serverenv import ServerEnv
 
+def server_error(errcode):
+	exceptions = {
+		400: HTTPBadRequest,
+    	401: HTTPUnauthorized,
+    	403: HTTPForbidden,
+    	404: HTTPNotFound,
+    	405: HTTPMethodNotAllowed,
+    	408: HTTPRequestTimeout,
+    	409: HTTPConflict,
+    	410: HTTPGone,
+    	415: HTTPUnsupportedMediaType,
+    	429: HTTPTooManyRequests,
+    	500: HTTPInternalServerError,
+    	502: HTTPBadGateway,
+    	503: HTTPServiceUnavailable
+	}
+	E = exceptions.get(errcode, HTTPException)
+	raise E()
+
 def basic_auth_headers(user, passwd):
 	ba = BasicAuth(login=user, password=passwd)
 	return {
@@ -275,6 +311,7 @@ def initEnv():
 	g.path_download = path_download
 	g.partial = partial
 	g.StreamHttpClient = StreamHttpClient
+	g.server_error = server_error
 
 def set_builtins():
 	all_builtins = [ i for i in dir(builtins) if not i.startswith('_')]
diff --git a/ahserver/xtermProcessor.py b/ahserver/xtermProcessor.py
index daa4bac..d62d627 100644
--- a/ahserver/xtermProcessor.py
+++ b/ahserver/xtermProcessor.py
@@ -24,7 +24,7 @@ class XtermProcessor(PythonScriptProcessor):
 	async def ws_2_process(self, ws):
 		async for msg in ws:
 			if msg.type == aiohttp.WSMsgType.TEXT:
-				# debug(f'recv from ws:{msg}.................')
+				debug(f'recv from ws:{msg}.................')
 				data = DictObject(**json.loads(msg.data))
 				if data.type == 'input':
 					self.p_obj.stdin.write(data.data)
@@ -34,7 +34,8 @@ class XtermProcessor(PythonScriptProcessor):
 					try:
 						debug(f'{data=}')
 						#self.p_obj._chan.change_terminal_size(data.rows, data.cols, data.width, data.height)
-						self.p_obj._chan.change_terminal_size(data.rows, data.cols)
+						# self.p_obj._chan.change_terminal_size(data.rows, data.cols)
+						self.p_obj._chan.change_terminal_size(data.cols, data.rows)
 					except Exception as e:
 						exception(f'{data=}, {e=}, {format_exc()}')
 						
@@ -84,6 +85,7 @@ class XtermProcessor(PythonScriptProcessor):
 			r1 = self.ws_2_process(ws)
 			r2 = self.process_2_ws(ws)
 			await asyncio.gather(r1,r2)
+		debug(f'run_xterm() ended')
 
 	async def ws_send_heartbeat(self, ws):
 		dic = {
diff --git a/setup.cfg b/setup.cfg
index ba2d167..06e3d25 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,7 +1,7 @@
 # setup.cfg
 [metadata]
 name = ahserver
-version = 1.0.6
+version = 1.0.9
 description = A application server base on aiohttp
 author = yu moqing
 author_email = yumoqing@gmail.com