diff --git a/ahserver/filestorage.py b/ahserver/filestorage.py
index 966859a..cc20731 100644
--- a/ahserver/filestorage.py
+++ b/ahserver/filestorage.py
@@ -101,12 +101,13 @@ class FileStorage:
 		root = self.root
 		if userid:
 			root += f'/{userid}'
-		path = os.path.abspath(os.path.join(root,
+		path = os.path.join(root,
 					str(v % paths[0]),
 					str(v % paths[1]),
 					str(v % paths[2]),
-					str(v % paths[3]),
-					name))
+					str(v % paths[3]))
+		_mkdir(path)
+		path = os.path.join(path, name)
 		return path
 
 	def remove(self, path):
@@ -118,6 +119,29 @@ class FileStorage:
 		except Exception as e:
 			exception(f'{path=}, {p=} remove error')
 			
+	async def streaming_read(self, request, webpath, buf_size=8096):
+		fp = self.realPath(webpath)
+		stats = os.stat(fp)
+		startpos = 0
+		endpos = stats.st_size
+		range = request.headers.get('Range')
+		if range:
+			range = range.split('=')[-1]
+			s,e = range.split('-')
+			if s:
+				startpos = int(s)
+			if e:
+				endpos = int(e)
+		debug(f'filesize={stats.st_size}, {startpos=}, {endpos=}')
+		async with aiofiles.open(fp, 'rb') as f:
+			if startpos > 0:
+				await f.seek(startpos)
+			pos = startpos
+			while pos < endpos:
+				b = await f.read(buf_size)
+				yield b
+				pos += len(b)
+
 	async def save(self,name,read_data, userid=None):
 		p = self._name2path(name, userid=userid)
 		fpath = p[len(self.root):]
diff --git a/ahserver/globalEnv.py b/ahserver/globalEnv.py
index 7143fca..81774d2 100644
--- a/ahserver/globalEnv.py
+++ b/ahserver/globalEnv.py
@@ -314,6 +314,7 @@ def initEnv():
 	g.partial = partial
 	g.StreamHttpClient = StreamHttpClient
 	g.server_error = server_error
+	g.FileStorage = FileStorage
 
 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 5a17546..7861aa1 100644
--- a/ahserver/xtermProcessor.py
+++ b/ahserver/xtermProcessor.py
@@ -25,6 +25,10 @@ class XtermProcessor(PythonScriptProcessor):
 		async for msg in ws:
 			if msg.type == aiohttp.WSMsgType.TEXT:
 				data = DictObject(**json.loads(msg.data))
+				if data.type == 'close':
+					debug(f'accept client close request, close the ws')
+					self.running = False
+					return
 				if data.type == 'input':
 					self.p_obj.stdin.write(data.data)
 				elif data.type == 'heartbeat':