python-TCP模拟ftp文件传输

#!/usr/bin/python
#coding=utf-8
#server
from socket import*
import sys,os
def command():
l=[ "Welcome!\n","command\n", "list\n","upload\n","download\n"]
return l
def list():
l=[]
for filename in os.listdir('.'):
l.append(filename)
return l
HOST="192.168.1.33"
PORT=5126
ADDR=(HOST,PORT)
sockob=socket(AF_INET,SOCK_STREAM)
sockob.bind(ADDR)
sockob.listen(5) a=[]
while 1:
sock,addr=sockob.accept() while 1:
data=sock.recv(1024)
str=data.split(" ") if data =="command":
a=command()
for i in a:
sock.send(i)
elif data =="list":
a=list()
for i in a:
sock.send(i)
elif str[0]=="upload":
f=open(str[1],'w')
s=sock.recv(1024)
print s
for i in s: #range(len(str)):
f.write(i)
print "upload is ok!"
elif str[0]=="download":
f=open(str[1],'r')
s=f.readlines()
for i in s:
sock.send(i)
print "download is ok!"
sockob.close()
sock.close()

#!/usr/bin/python
#coding=utf-8
#client
from socket import *
import sys HOST='192.168.1.33'
PORT=5126
ADDR=(HOST,PORT)
sockob=socket(AF_INET,SOCK_STREAM)
sockob.connect(ADDR) while 1:
data=raw_input(">",)
str=data.split(' ')
if not str:
break
elif str[0]=="upload":
f=open(str[1],'r')
sockob.send(data)
s0=f.readlines()
print s0
for i in s0:
sockob.send(i)
elif str[0]=="download":
f=open(str[1],'w')
sockob.send(data)
s1=sockob.recv(1024)
f.write(s1)
elif data=="command" or data=="list":
sockob.send(data)
data=sockob.recv(1024)
print data sockob.close()