Python core third edition of Network programming

To create a TCP server pseudo-code:

s = socket () #创建服务器套接字

S.bind () #套接字与地址绑定

S.listen () #监听连接

Inf_loop: #服务器无限循环

cs = s.accept () #接受客户端连接, if there is no connection, block

Comm_loop: #通信循环

CS.RECV ()/cs.send () #会话

Cs.close () #关闭客户端套接字

S.close () #关闭服务器套接字

Here's the code:

#!/usr/bin/env python3# encoding: utf-8from socket import *from time  import ctimehost =  ' port = 21567bufsize = 1024addr =  (HOST,  port) Tcpsersock= socket (af_inet, sock_stream) tcpsersock.bind (ADDR) Tcpsersock.listen (5) while  true:    print (' waiting for connection ... ')      Tcpclisock, addr = tcpsersock.accept ()     print (' ... connected from: ',  ADDR)     while true:        data =  TCPSERSOCK.RECV (BUFSIZE)         if not data:             break         tcpsersock.send (' [%s] %s '  %  (bytes (CTime (),  ' uft-8 '),  data)      tcpsersock.close () TcpseRsock.close () 

Create the TCP client pseudo-code accordingly:

CS = socket ()

Cs.connect ()

Comm_loop: #通信循环

CS.RECV ()/cs.send () #会话

Cs.close () #关闭客户端套接字

Here is the implementation code:

#!/usr/bin/env python

# Encoding:utf-8

From socket Import *

HOST = ' 192.168.184.130 '

PORT = 21567

BUFSIZE = 1024

ADDR = (HOST, PORT)

Tcpclisock = socket (af_inet, SOCK_STREAM)

Tcpclisock.connect (ADDR)

While True:

data = input (' > ')

If not data:

Break

Tcpclisock.send (data)

data = TCPCLISOCK.RECV (BUFSIZE)

If not data:

Break

Print (data)

Tcpclisock.close ()

On the basis of this simplest server socket program, it can be fully expanded.

Python core third edition of Network programming