python实现UDP协议下的文件传输

import socket

count = 0
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
server_addr = (\'127.0.0.1\',9999)
s.bind(server_addr)

print(\'Bind UDP on 9999...\')
while True:
 if count == 0:
  data,client_addr = s.recvfrom(1024)
  print(\'connected from %s:%s\'%client_addr)
  f = open(data, \'wb\')
 data, client_addr = s.recvfrom(1024)
 if str(data) != \"b\'end\'\":
  f.write(data)
  print(\'recieved \'+str(count)+\' byte\')
 else:
  break
 s.sendto(\'ok\'.encode(\'utf-8\'),client_addr)
 count+=1
print(\'recercled\'+str(count))
f.close()
s.close()

 # data, addr = s.recvfrom(1024)
 # print(\'Received from %s:%s\' %addr)
 # s.sendto(b\'Hello, %s!\' %data, addr)

import socket
import os
import time

def Get_FilePath_FileName_FileExt(filename):
 filepath, tempfilename = os.path.split(filename)
 shotname, extension = os.path.splitext(tempfilename)
 return filepath, shotname, extension

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

filename = input(\'please enter the filename you want to send:\\n\')
filepath, shotname, extension = Get_FilePath_FileName_FileExt(filename)

client_addr = (\'127.0.0.1\',9999)
f = open(filename,\'rb\')
count = 0
flag = 1
while True:
 if count == 0:
  data = bytes(shotname+extension, encoding = \"utf8\")
  start = time.time()
  s.sendto(data,client_addr)
 data = f.read(1024)
 if str(data) != \"b\'\'\":
  s.sendto(data,client_addr)
  print(str(count)+\'byte\')

 else:
  s.sendto(\'end\'.encode(\'utf-8\'),client_addr)
  break
 data, server_addr = s.recvfrom(1024)
 count+=1
print(\'recircled\'+str(count))
s.close
end = time.time()
print(\'cost\'+str(round(end-start,2))+\'s\')
# for data in [b\'Michael\',b\'Tracy\',b\'Sarah\']:
#  s.sendto(data,(\'127.0.0.1\',9999))
#  print(s.recv(1024).decode(\'utf-8\'))
# s.close()