diff --git a/plugins/net.py b/plugins/net.py
index afc72c2..4190634 100644
--- a/plugins/net.py
+++ b/plugins/net.py
@@ -70,32 +70,34 @@ class Netrecv:
     def process_connection(self, conn, addr):
         print('Connection accpet %s' % str(addr))
         data = b''
+        need_data = False
         while True:
             new_data = conn.recv(RECV_BUFF)  # here needs to check whether the package is continued
             if not new_data:
                 conn.close()
                 return
             data += new_data
-            while True:
+            while True:  # process sticky package
                 dp = Datapack(check_head=False)
                 dp.encode_data = data
                 try:
-                    data = dp.decode(only_head=True)
-                except Exception as e:
+                    if not need_data:
+                        data = dp.decode(only_head=True)
+                except Exception as e:  # check head
                     print('Decode error %s: %s' % (type(e), str(e)))
                     print('Stop and start to receive more data')
                     break
                 length = int(dp.head['length'])
-                if length > len(data):
+                if length > len(data):  # check body
                     print('No enougth data, stop and start to receive')
+                    need_data = True
                     break
+                elif length == len(data):
+                    need_data = False
                 dp.body = data[:length]  # get the body
                 data = data[length:]
                 dp.encode()
-                print(dp.body)
                 print('---------------\n'+dp.encode_data.decode()+'\n---------------')
-                if not data:
-                    break
 
 
 class Netlist:  # contain net list and network controller
diff --git a/test_file.py b/test_file.py
index 4304272..c754b1b 100644
--- a/test_file.py
+++ b/test_file.py
@@ -1,28 +1,34 @@
 import socket
 import time
 
-data = '''post log msw/1.0
+data = '''file log msw/1.0
 from: network
 flag: abcdefgh
-num: 1/2
+num: 1/1
 lengt'''
 
-data2 = '''h: '''
+data2 = '''h: 9
 
-data3 ='''3
+123'''
+
+data3 ='''456789'''
+
+data4 = '''post log msw/1.1
+from: network
+flag: 12345678
+num: 1/1
+length: 3
 
 abc'''
 
-data = data.encode()
-data2 = data2.encode()
-data3 = data3.encode()
+data_list = [data, data2, data3,data4]
+code_list = []
+for i in data_list:
+    code_list.append(i.encode())
 
 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 s.connect(('127.0.0.1', 3900))
 
-s.sendall(data)
-time.sleep(1)
-s.sendall(data2)
-time.sleep(1)
-s.sendall(data3)
-s.close()
+for i in code_list:
+    s.sendall(i)
+    time.sleep(1)
\ No newline at end of file