server端：
import socket
s = socket.socket()
host = socket.gethostname()
port = 1234
s.bind((host, port))
s.listen(5)
while True:
c, addr = s.accept()
print 'Got connection from', addr
print c.recv(1024)
c.send('Thank you for your connection')
c.close()2. 客戶端
import socket
s = socket.socket()
host = socket.gethostname()
port = 1234
s.connect((host, port))
s.send('nihao')
print s.recv(1024)同時在一臺計算機上運行，可以觀察到效果。