python实现UDP协议下的文件传输
本文实例为大家分享了python实现UDP文件传输的具体代码，供大家参考，具体内容如下
UDP协议下文件传输：
服务端
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)
客户端
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()
此次试验为100000Byte大小的文件，运行后查看服务器端信息：
客户端上查看传输时延：
