python网络编程——实现简单聊天

import socket
import threading
import time

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((‘ip.*.*.*‘, 9999))
s.listen(5)
print(‘Waiting for connection...‘)

def tcplink(sock, addr):
    print(‘Accept new connection from %s:%s...‘ % addr)
    sock.send(b‘Welcome!‘)
    while True:
        data = sock.recv(1024)
        time.sleep(1)
        if not data or data.decode(‘utf-8‘) == ‘exit‘:
            break
        print(‘Client:%s‘%data.decode(‘utf-8‘))
        sock.send((‘Server:%s‘% input()).encode(‘utf-8‘))
    sock.close()
    print(‘Connection from %s:%s closed.‘ % addr)

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, args=(sock, addr))
    t.start()

import socket

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# 建立连接:
s.connect((‘ip.*.*.*‘, 9999))
# 接收欢迎消息:
print(s.recv(1024).decode(‘utf-8‘))
while True:
    msg=input()
    # 发送数据:
    s.send(msg.encode(‘utf-8‘))
    print(s.recv(1024).decode(‘utf-8‘))
    if msg ==‘exit‘:
       break
s.send(b‘exit‘)
s.close()