C/S模式简介

Tcp通信模型

Udp通信模型

python标准库中的socket模块

用socket建立TCP服务器端

用socket建立UDP服务器端

socket TCP服务器端测试代码

#coding:utf-8
import socket#Host=''表示为本机地址
HOST=''
PORT=3214#默认为IPV4,TCP协议
s=socket.socket()
s.bind((HOST,PORT))s.listen(5)clnt,addr=s.accept()print "Client Address:",addrwhile True:data=clnt.recv(1024)if not data:break#把二进制解码为utf-8print 'receive data:',data.decode('utf-8')clnt.send(data)
clnt.close()
s.close()
socket UDP服务器端测试代码
#coding:utf-8
import socket#ip:127.0.0.1,port 3214
HOST='' #warning:Ip addr can only be dropped in server!
PORT=3214#AF_INET IPV4
#SOCK_DGRAM UDP
s=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
s.bind((HOST,PORT))data=True
while data:data,addr=s.recvfrom(1024)if data == b'bye':breakprint 'Receive String:',data.decode('utf-8')s.sendto(data,addr)
s.close()