上述问题的出现是因为没有设置listen函数

from socket import *from time import ctimeHOST = ''PORT = 21567BUFSIZ = 1024ADDR = (HOST,PORT)tcpSerSock = socket(AF_INET,SOCK_STREAM) tcpSerSock.bind(ADDR)tcpSerSock.listen(5)while True:	print 'waiting for connection...'	tcpCliSock, addr = tcpSerSock.accept()	print 'connected from:',addr	while True:		data = tcpCliSock.recv(BUFSIZ)		if not data:			break		print 'recv data : ',data		tcpCliSock.send('[%s] %s' % (ctime(),data))	tcpCliSock.close()tcpSerSock.close()

 

from socket import *HOST = 'localhost'PORT = 21567ADDR = (HOST,PORT)BUFFSIZE = 1024tcpCliSock = socket(AF_INET,SOCK_STREAM)tcpCliSock.connect(ADDR)print 'connect host success'while True:	data = raw_input(">")	if not data:		break	tcpCliSock.send(data)	data = tcpCliSock.recv(BUFFSIZE)	if not data:		break	print 'recv data : ',datatcpCliSock.close()