Python 网络编程-TCP服务端基础篇（一）简单的发送和接收

#Python 网络编程-TCP服务端基础篇（一）简单的发送和接收
##TCP服务端基本流程图

TCP服务端-单个客户端

 1 import socket
 2 _BUFFSIZE = 1024
 3 ip_addr = r"10.110.36.27"
 4 port = 9000
 5 ip_port = (ip_addr,port)
 6 socket_server = socket.socket()
 7 socket_server.bind(ip_port)
 8 socket_server.listen()
 9 print("正在等待客户端连接")
10 conn,addr = socket_server.accept()
11 print("当前连接的ip",addr)
12 while 1:
13 print("正在等待接收信息")
14 receive_msg = conn.recv(_BUFFSIZE)
15 print("接收到的信息为",receive_msg.decode())
16 if 'quit' in receive_msg.decode():
17 break
18 # send_msg = input("请输入要发送的信息")
19 conn.sendall(receive_msg)
20 socket_server.close()

TCP服务端-多个客户端(二)

 1 import socket
 2 import threading
 3 import time
 4 import re
 5 _BUFFSIZE = 1024
 6 _MAX_CLIENT = 5
 7 ip_addr = r"10.110.36.27"
 8 port = 9000
 9 ip_port = (ip_addr,port)
10 # socket_server = socket.socket()
11 # socket_server.bind(ip_port)
12 # socket_server.listen(_MAX_CLIENT)
13 # print("正在等待客户端连接")
14 
15 # conn,addr = socket_server.accept()
16 # print("当前连接的ip",addr)
17 
18 
19 class TcpServer(object):
20     def __init__(self,ip,port):
21         self._ip = ip
22         self._port = port
23 
24 
25     def serve_start(self):
26         self.serve = socket.socket()
27         self.serve.bind((self._ip,self._port))
28         self.serve.listen(_MAX_CLIENT)
29 
30    
31     def serve_stop(self):
32         self.serve.close()
33 
34     
35     # def serve_wait(self):
36     #     self._con,self._addr = self.serve.accept()
37     
38     def con_info(self):
39         while 1:
40             print("正在等待客户端连接")
41             self.con,self.addr = self.serve.accept()
42             print('当前连接ip',self.addr)
43             self.client_listen(self.con,self.addr)
44     
45     def receive_send(self,conn,addr):
46         # # while 1:
47         # conn,addr = self.serve.accept()
48         # print("当前连接：",addr)
49         # # print("%s d",addr)
50         while 1:
51             # print("来自%s的信息为%s"%(addr,receive_msg))
52             receive_msg = conn.recv(_BUFFSIZE)
53             print("来自%s的信息为%s"%(addr,receive_msg))
54             if receive_msg.decode() =='':
55                 break
56             else:
57                 if 'quit' in receive_msg.decode():
58                     # conn.close()
59                     break
60                 # send_msg = input("请输入要发送的信息")
61                 conn.sendall(receive_msg)
62         print("关闭连接：",addr)
63         conn.close()
64 
65     def client_listen(self,conn,addr):
66         thread_1 = threading.Thread(target=self.receive_send,args=(conn,addr,))
67         thread_1.start()
68 
69 try:
70     server_obj = TcpServer(ip_addr,port)
71     server_obj.serve_start()
72     server_obj.con_info()
73     # server_obj.client_listen()
74 finally:
75     server_obj.serve_stop()