io多路复用（一）

时间：2021-07-31 05:42:36
sever端
 1 import socket

 sk1 = socket.socket()

 sk1.bind(('127.0.0.1',8001,))

 sk1.listen()

 sk2 = socket.socket()

 sk2.bind(('127.0.0.1',8002,))

 sk2.listen()

 sk3 = socket.socket()

 sk3.bind(('127.0.0.1',8003,))

 sk3.listen()

 inputs = [sk1,sk2,sk3]

 import select

 while True:

     # [sk1,sk2,sk3]select内部自动监听sk1,sk2,sk3,三个对象，一旦某个句柄发生变化（accept（））

     # 如果有链接sk1

     # r_list = [sk1,sk2]

     r_list,w_list,e_list = select.select(inputs,[],[],1)

     for sk in r_list:

         conn,adress = sk.accept()

         conn.sendall(bytes('hello',encoding='utf-8'))

         conn.close()

客户端，可同时连接多个客户端

 import socket

 obj = socket.socket()

 obj.connect(('127.0.0.1',8001,))

 rec_bytes = obj.recv(1024)

 rec_str = str(rec_bytes,encoding='utf-8')

 print(rec_str)

 obj.close()

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