python socket

服务端

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import socket import threading import time   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)         print((data.decode('utf-8')).encode('utf-8'))         break #        if not data or data.decode('utf-8') == 'exit': #            break #        sock.send(('Hello, %s!' % data.decode('utf-8')).encode('utf-8'))     sock.close()     print('Connection from %s:%s closed.' % addr)   HOST='127.0.0.1' PORT=9999 s=socket.socket(socket.AF_INET,socket.SOCK_STREAM) s.bind((HOST,PORT)) s.listen(5) while True:       sock, addr = s.accept()       t = threading.Thread(target=tcplink, args=(sock, addr))       t.start()

　客户端

#!/usr/bin/python
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('127.0.0.1', 9999))
s.send("helloworld")
s.close()