python tcp .demo

# -*- coding: utf-8 -*-

import socket

s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)

s.connect((‘127.0.0.1‘,9999))

print(s.recv(1024))

for data in [‘zhang‘,‘liu‘,‘wang‘]:
    s.send(data)
    print(s.recv(1024))

s.send(‘exit‘)
s.close()

# -*- coding: utf-8 -*-
#引入模块
import socket
import threading
import time

def tcplink(sock,addr):
    print(‘Accept new connection from {0}:{0}...‘.format(addr))
    sock.send(‘Welcome!‘)
    while True:
        data=sock.recv(1024)
        time.sleep(1)
        if data==‘exit‘ or not data:
            break
        sock.send(‘Hello,%s!‘%data)
    sock.close()
    print(‘Connection from {0}:{0} closed‘.format(addr))

#创建socket
s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)

#监听端口
s.bind((‘127.0.0.1‘,9999))
s.listen(5)
print(‘Waiting for connection...‘)

while True:
    
    #接受一个新连接
    sock,addr=s.accept()
    
    #创建新线程来处理TCP连接
    t=threading.Thread(target=tcplink(sock,addr))